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Cox Engine of The Month
August-2024
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
The OK Cub .060/.059
Page 1 of 1
The OK Cub .060/.059
Since the Cub .06 came up, I thought I would post this tome. Herkimer was the original engine supplier to Comet. The Comet RTFs used beam mount Cub .049Bs, .074s in a few cases like the Hornet and Lebond cars, and later the tank mount .049A. Interestingly, the Cub 049A used the same mount pattern as the Cox Babe Bee (that used the same bolt pattern as the Space Bug). And when the Comet-Fox came out, it had the same tank bolt pattern as the .049A!
![The OK Cub .060/.059 Img_3615](https://i.servimg.com/u/f62/19/09/47/31/img_3615.jpg)
The Cubs weren't really powerful enough, so Comet went to the Comet-Fox .07. The Fox was designed with beam mounts so it could be used in either tank mount or beam mount applications. Comet used both styles.
For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. This engine, with its increased displacement and glow head, might have been the best small Cub ever made according to John Krickel.
The glow head as we all know now is THE way to gain power ( or the Nelson setup). When OK was going out of the engine business, they sold off many .060s as .059s, but they were the same engine.
The Cub .049s had a 0.420" x .360" bore and stroke, the .060 .420" x .415". Herkimer modified the .049B case to add a flange for tank mounting. The B case and the A case were also modified to have higher (longer) cylinder mounts to accommodate the longer stroke, had the front intake location cast shut, and had a new rear cover design with the built-in reed valve.
![The OK Cub .060/.059 Img_3617](https://i.servimg.com/u/f62/19/09/47/31/img_3617.jpg)
![The OK Cub .060/.059 Img_3618](https://i.servimg.com/u/f62/19/09/47/31/img_3618.jpg)
![The OK Cub .060/.059 Img_3616](https://i.servimg.com/u/f62/19/09/47/31/img_3616.jpg)
The cylinder was also made longer and the exhaust ports made wider. A longer connecting rod was needed; a rather chintzy socket crimp was used. The case had a milled relief to clear the rod and a blued steel washer was placed over the crankpin to keep the rod from rubbing the front of the reed valve mount.
![The OK Cub .060/.059 Img_3619](https://i.servimg.com/u/f62/19/09/47/31/img_3619.jpg)
![The OK Cub .060/.059 Img_3620](https://i.servimg.com/u/f62/19/09/47/31/img_3620.jpg)
![The OK Cub .060/.059 Img_3621](https://i.servimg.com/u/f62/19/09/47/31/img_3621.jpg)
![The OK Cub .060/.059 Img_3622](https://i.servimg.com/u/f62/19/09/47/31/img_3622.jpg)
These engines can be found in a great variety of combinations. Plain unmodified nose, nose modified for uninstalled starter, various starters installed, with and without beam mounts, with all tank lugs left on for tank mounting (Tri-Pacer, Regulus), some or all tank lungs clipped off for beam mounting (Horner, P51, Warhawk).
![The OK Cub .060/.059 Img_3624](https://i.servimg.com/u/f62/19/09/47/31/img_3624.jpg)
![The OK Cub .060/.059 Img_3623](https://i.servimg.com/u/f62/19/09/47/31/img_3623.jpg)
Hope this is interesting to you Cox folks. At least you can claim the tank mount!
Thanks to John Krickel wherever he may be for his .049 newsletter. And to Dave Evans for helping me complete my Cub collection!
![The OK Cub .060/.059 Img_3615](https://i.servimg.com/u/f62/19/09/47/31/img_3615.jpg)
The Cubs weren't really powerful enough, so Comet went to the Comet-Fox .07. The Fox was designed with beam mounts so it could be used in either tank mount or beam mount applications. Comet used both styles.
For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. This engine, with its increased displacement and glow head, might have been the best small Cub ever made according to John Krickel.
The glow head as we all know now is THE way to gain power ( or the Nelson setup). When OK was going out of the engine business, they sold off many .060s as .059s, but they were the same engine.
The Cub .049s had a 0.420" x .360" bore and stroke, the .060 .420" x .415". Herkimer modified the .049B case to add a flange for tank mounting. The B case and the A case were also modified to have higher (longer) cylinder mounts to accommodate the longer stroke, had the front intake location cast shut, and had a new rear cover design with the built-in reed valve.
![The OK Cub .060/.059 Img_3617](https://i.servimg.com/u/f62/19/09/47/31/img_3617.jpg)
![The OK Cub .060/.059 Img_3618](https://i.servimg.com/u/f62/19/09/47/31/img_3618.jpg)
![The OK Cub .060/.059 Img_3616](https://i.servimg.com/u/f62/19/09/47/31/img_3616.jpg)
The cylinder was also made longer and the exhaust ports made wider. A longer connecting rod was needed; a rather chintzy socket crimp was used. The case had a milled relief to clear the rod and a blued steel washer was placed over the crankpin to keep the rod from rubbing the front of the reed valve mount.
![The OK Cub .060/.059 Img_3619](https://i.servimg.com/u/f62/19/09/47/31/img_3619.jpg)
![The OK Cub .060/.059 Img_3620](https://i.servimg.com/u/f62/19/09/47/31/img_3620.jpg)
![The OK Cub .060/.059 Img_3621](https://i.servimg.com/u/f62/19/09/47/31/img_3621.jpg)
![The OK Cub .060/.059 Img_3622](https://i.servimg.com/u/f62/19/09/47/31/img_3622.jpg)
These engines can be found in a great variety of combinations. Plain unmodified nose, nose modified for uninstalled starter, various starters installed, with and without beam mounts, with all tank lugs left on for tank mounting (Tri-Pacer, Regulus), some or all tank lungs clipped off for beam mounting (Horner, P51, Warhawk).
![The OK Cub .060/.059 Img_3624](https://i.servimg.com/u/f62/19/09/47/31/img_3624.jpg)
![The OK Cub .060/.059 Img_3623](https://i.servimg.com/u/f62/19/09/47/31/img_3623.jpg)
Hope this is interesting to you Cox folks. At least you can claim the tank mount!
Thanks to John Krickel wherever he may be for his .049 newsletter. And to Dave Evans for helping me complete my Cub collection!
GWILLIEFOX- Rest In Peace
- Posts : 304
Join date : 2014-12-23
Age : 81
Location : Beaver Falls, PA
Re: The OK Cub .060/.059
Thanks for posting, love it!
The early head fits the pre '56 Cox cyl and later Herkimer glowhead fits the later Cox.
Lol, there's claims Bill Atwood did the design work for the reedie .060, freelancing while he working for Cox on Tee Dees.
The early head fits the pre '56 Cox cyl and later Herkimer glowhead fits the later Cox.
Lol, there's claims Bill Atwood did the design work for the reedie .060, freelancing while he working for Cox on Tee Dees.
Last edited by Mark Boesen on Wed Jan 10, 2018 10:37 am; edited 1 time in total
Re: The OK Cub .060/.059
Thanks for posting, love it!
John was hanging out in Atlanta area, had a nice visit with him several years ago.
John was hanging out in Atlanta area, had a nice visit with him several years ago.
Re: The OK Cub .060/.059
GWILLIEFOX wrote:
For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. This engine, with its increased displacement and glow head, might have been the best small Cub ever made according to John Krickel.
The glow head as we all know now is THE way to gain power ( or the Nelson setup). When OK was going out of the engine business, they sold off many .060s as .059s, but they were the same engine.
The Cub .049s had a 0.420" x .360" bore and stroke, the .060 .420" x .415". Herkimer modified the .049B case to add a flange for tank mounting. The B case and the A case were also modified to have higher (longer) cylinder mounts to accommodate the longer stroke, had the front intake location cast shut, and had a new rear cover design with the built-in reed valve.
These engines can be found in a great variety of combinations. Plain unmodified nose, nose modified for uninstalled starter, various starters installed, with and without beam mounts, with all tank lugs left on for tank mounting (Tri-Pacer, Regulus), some or all tank lungs clipped off for beam mounting (Horner, P51, Warhawk).
Hope this is interesting to you Cox folks. At least you can claim the tank mount!
Thanks to John Krickel wherever he may be for his .049 newsletter. And to Dave Evans for helping me complete my Cub collection!
I believe I have the same engine/tank as in your photo; top left.. except mine has a prop-driver. It was given to me last Summer in a boxful of assorted parts-engines from a fella down the road from me. Ken Cook actually spotted it when I originally posted getting the box of engines.
See the photos below..
![The OK Cub .060/.059 Dsc05216](https://i.servimg.com/u/f62/18/50/45/90/dsc05216.jpg)
![The OK Cub .060/.059 Dsc05217](https://i.servimg.com/u/f62/18/50/45/90/dsc05217.jpg)
![The OK Cub .060/.059 Dsc05218](https://i.servimg.com/u/f62/18/50/45/90/dsc05218.jpg)
![The OK Cub .060/.059 Dsc05219](https://i.servimg.com/u/f62/18/50/45/90/dsc05219.jpg)
It's got some dings and is missing one tank-screw.. but has excellent compression. I shouldn't assume that all is complete inside the tank.. because I haven't had it apart.
OK Cub .060 maintenance
I thought I'd give my OK Cub engine(s) some love today. The .060 (reed-valve) and .049A (frt. rotary-valve) both had some tank-issues as received.
The .060 was missing one out of three screws. The screws are 2-56 round-head machine screws that are approx. 11/16" long. I had several 3/4" long screws.. and decided to swap them all out.
![The OK Cub .060/.059 _060_m10](https://i.servimg.com/u/f62/18/50/45/90/_060_m10.jpg)
![The OK Cub .060/.059 _060_m11](https://i.servimg.com/u/f62/18/50/45/90/_060_m11.jpg)
![The OK Cub .060/.059 _060_m12](https://i.servimg.com/u/f62/18/50/45/90/_060_m12.jpg)
As you can see in the last photo; the screws are 1/16" longer.. and stick-out a bit. I'm not concerned about that. My concerns are the reed-holder/rear-cover (looks like a back-plate) and needle-valve.. which are locked-up. I can probably heat-up the case to help remove the rear-cover.. but the tank (being plastic) worries me. I put some penetrating-oil on the needle-threads.. and will just let it sit and soak.. but don't know what else to try. I assume that there's a metal spray-bar pressed-in.. but maybe there isn't?
The .049A's tank had four Cox-type 2-56 fillister-head screws from a 8cc tank, that were threaded "part-way" in. They are MUCH too long. The 12 o'clock screw-position is in-line with the base of the engine-cylinder. That screw must be the correct length.. so I used one of the three; removed from the .060 engine (same 11/16" length..) to install in that location. I used the 3/4" length screws in the other three locations.
![The OK Cub .060/.059 _049a_10](https://i.servimg.com/u/f62/18/50/45/90/_049a_10.jpg)
![The OK Cub .060/.059 _049a_11](https://i.servimg.com/u/f62/18/50/45/90/_049a_11.jpg)
![The OK Cub .060/.059 _049a_12](https://i.servimg.com/u/f62/18/50/45/90/_049a_12.jpg)
![The OK Cub .060/.059 _049a_13](https://i.servimg.com/u/f62/18/50/45/90/_049a_13.jpg)
Again; the last photo shows the screws being 1/16" longer than original.
NOTE: Both of these engines use 5-40 prop-screws, as the Cox .049/.051 engines do.
I don't need to run them anytime soon.. but figured I should do a little work to them.. seeing that I had screws that would fit. Both engines turn-over with decent compression.
The .060 was missing one out of three screws. The screws are 2-56 round-head machine screws that are approx. 11/16" long. I had several 3/4" long screws.. and decided to swap them all out.
![The OK Cub .060/.059 _060_m10](https://i.servimg.com/u/f62/18/50/45/90/_060_m10.jpg)
![The OK Cub .060/.059 _060_m11](https://i.servimg.com/u/f62/18/50/45/90/_060_m11.jpg)
![The OK Cub .060/.059 _060_m12](https://i.servimg.com/u/f62/18/50/45/90/_060_m12.jpg)
As you can see in the last photo; the screws are 1/16" longer.. and stick-out a bit. I'm not concerned about that. My concerns are the reed-holder/rear-cover (looks like a back-plate) and needle-valve.. which are locked-up. I can probably heat-up the case to help remove the rear-cover.. but the tank (being plastic) worries me. I put some penetrating-oil on the needle-threads.. and will just let it sit and soak.. but don't know what else to try. I assume that there's a metal spray-bar pressed-in.. but maybe there isn't?
The .049A's tank had four Cox-type 2-56 fillister-head screws from a 8cc tank, that were threaded "part-way" in. They are MUCH too long. The 12 o'clock screw-position is in-line with the base of the engine-cylinder. That screw must be the correct length.. so I used one of the three; removed from the .060 engine (same 11/16" length..) to install in that location. I used the 3/4" length screws in the other three locations.
![The OK Cub .060/.059 _049a_10](https://i.servimg.com/u/f62/18/50/45/90/_049a_10.jpg)
![The OK Cub .060/.059 _049a_11](https://i.servimg.com/u/f62/18/50/45/90/_049a_11.jpg)
![The OK Cub .060/.059 _049a_12](https://i.servimg.com/u/f62/18/50/45/90/_049a_12.jpg)
![The OK Cub .060/.059 _049a_13](https://i.servimg.com/u/f62/18/50/45/90/_049a_13.jpg)
Again; the last photo shows the screws being 1/16" longer than original.
NOTE: Both of these engines use 5-40 prop-screws, as the Cox .049/.051 engines do.
I don't need to run them anytime soon.. but figured I should do a little work to them.. seeing that I had screws that would fit. Both engines turn-over with decent compression.
Re: The OK Cub .060/.059
Roddie. I have found the brass insert which the needle valve screws into can be fairly easily prised out from the plastic tank. You can probably firmly grip the needle in a vise and carefully pull on the tank. If you do, just ensure that your re-insert it with the hole in the side of the tube aligned with the hole in the tank.
As for the .049A tank screws, you do need to be careful with the upper screw as it can press against the base of the cylinder and distort it causing a tight spot as the engine is turned over. It needs to be exactly the correct length. I've even had original correct screws do it due to the tank being compressed by overtightening.
As for the .049A tank screws, you do need to be careful with the upper screw as it can press against the base of the cylinder and distort it causing a tight spot as the engine is turned over. It needs to be exactly the correct length. I've even had original correct screws do it due to the tank being compressed by overtightening.
Oldenginerod- Top Poster
- Posts : 4000
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria
Re: The OK Cub .060/.059
Nice little Cubbies there. I kinda like the look of the clear/white fuel tanks. Would be nice for a quick reference to how much fuel is in it.
NEW222- Top Poster
- Posts : 3895
Join date : 2011-08-13
Age : 45
Location : oakbank, mb
Re: The OK Cub .060/.059
Oldenginerod wrote:Roddie. I have found the brass insert which the needle valve screws into can be fairly easily prised out from the plastic tank. You can probably firmly grip the needle in a vise and carefully pull on the tank. If you do, just ensure that your re-insert it with the hole in the side of the tube aligned with the hole in the tank.
As for the .049A tank screws, you do need to be careful with the upper screw as it can press against the base of the cylinder and distort it causing a tight spot as the engine is turned over. It needs to be exactly the correct length. I've even had original correct screws do it due to the tank being compressed by overtightening.
Thanks for those tips Rod. Lots of good info and photos here by Bill M. too.
Regarding the needle; I chose to grab-onto the knob with my small locking-pliers, and loosen it.
![The OK Cub .060/.059 Needle11](https://i.servimg.com/u/f62/18/50/45/90/needle11.jpg)
It's been cleaned and reinstalled with light-oil. I removed the black Neoprene fuel pick-up line to find it surprisingly flexible.
I managed to remove the back-plate/reed-holder, by putting a small rectangular piece of .060" aluminum in a bench-vise, with just a slight "lip" sticking-up above the jaws.. enough to engage the slots. I applied downward pressure on the engine while turning it, which freed it up.
![The OK Cub .060/.059 Dsc05624](https://i.servimg.com/u/f62/18/50/45/90/dsc05624.jpg)
![The OK Cub .060/.059 Dsc05625](https://i.servimg.com/u/f62/18/50/45/90/dsc05625.jpg)
![The OK Cub .060/.059 Dsc05626](https://i.servimg.com/u/f62/18/50/45/90/dsc05626.jpg)
The reed looks "creased" (no good) to me.
Re: The OK Cub .060/.059
One of most informative Cub treads to come down the pike. Thanks guys. Nothing for me to contribute except:
"For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. "
The 'whatever reason' was that Comet Models wasn't paying its invoices from Fox. It would be interesting to know if Comet stuck Herkimer on the .060s.
"For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. "
The 'whatever reason' was that Comet Models wasn't paying its invoices from Fox. It would be interesting to know if Comet stuck Herkimer on the .060s.
ticomareado- Account Under Review
- Posts : 1089
Join date : 2013-10-03
Location : NC
Re: The OK Cub .060/.059
Boy Tim, I've asked around for years about the Fox-Comet situation. Nice to know the reason. Frank Anderson (Andersons Bluebook) told me Duke made a raid on Comet to retrieve. 07 engines and parts. These engines became the Fox "Compact Stunt Motor". Mark published the .07 story. Ted Brebeck said Comet defaulted on Herkimer and returned thousands of 049 and 06/059 engines. Ted resold many of these ( the boue spinner Regulus engine quite common) and built many new Engines from parts.ticomareado wrote:One of most informative Cub treads to come down the pike. Thanks guys. Nothing for me to contribute except:
"For whatever reason, Fox fell out of favor and Herkimer again supplied engines to Comet, this time the reed valve .060. "
The 'whatever reason' was that Comet Models wasn't paying its invoices from Fox. It would be interesting to know if Comet stuck Herkimer on the .060s.
Any more Comet info to share?
GWILLIEFOX- Rest In Peace
- Posts : 304
Join date : 2014-12-23
Age : 81
Location : Beaver Falls, PA
Re: The OK Cub .060/.059
Now I really do miss Gwillie. Maybe someone else (Boesen??)can help. This Ebay win came in today:
https://www.ebay.com/itm/1959-OK-CUB-049B-Stunt-Control-Line-and-Free-Flight-w-original-Box-/274328747247?nma=true&si=1hZAPNcovFOisKGTSp%252FoSsjpeqc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
As you can all see, it is not an .049B. The starter it has does not match any in this thread's photo gallery and it is wound up tight as a tick with no way to release the tension on the internal spring. The engine internals are free to move. The thing looks like it should operate like a Wen Mac Rotomatic starter except that it uses a wire spring instead of a flat spring steel spring. I'm afraid to attempt a disassembly.
https://www.ebay.com/itm/1959-OK-CUB-049B-Stunt-Control-Line-and-Free-Flight-w-original-Box-/274328747247?nma=true&si=1hZAPNcovFOisKGTSp%252FoSsjpeqc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557
As you can all see, it is not an .049B. The starter it has does not match any in this thread's photo gallery and it is wound up tight as a tick with no way to release the tension on the internal spring. The engine internals are free to move. The thing looks like it should operate like a Wen Mac Rotomatic starter except that it uses a wire spring instead of a flat spring steel spring. I'm afraid to attempt a disassembly.
ticomareado- Account Under Review
- Posts : 1089
Join date : 2013-10-03
Location : NC
Re: The OK Cub .060/.059
Victor, I believe I have that engine which is a .059. What I find interesting here is that you now show me what my engine is missing which is the up front winder? This engine offers decent power for a old timer. With all the discussion of OK finally departing us, I contacted Ted. He said send me a picture of your engine and I will compile the parts needed to make it work. Sure enough, parts arrived in the mail. I couldn't even thank him as he took down the site and his e-mail. My engine is running and I'm real happy with it. I don't even care if I ever fly it. I just enjoy it.
Ken Cook- Top Poster
- Posts : 5573
Join date : 2012-03-27
Location : pennsylvania
Re: The OK Cub .060/.059
Remembering Bill Mohrbacher (GWILLIEFOX). I miss your contributions here Bill.
I gave my .060 a little more love tonight. It wasn't really planned. I was just looking through a box of loose engines.. and saw it there waiting to be paid attention to.
The last maintenance done was to remove the reed-holder assy. to examine. The reed looked creased and I didn't do much more with it until tonight.
There's a "circlip" to hold the reed against the mouth of the venturi like Cox uses.. except it's smaller than a Cox .049 circlip. The reed housing is .350" diameter and has a groove for the circlip to seat into.
![The OK Cub .060/.059 20231031](https://i.servimg.com/u/f76/18/50/45/90/20231031.jpg)
![The OK Cub .060/.059 20231032](https://i.servimg.com/u/f76/18/50/45/90/20231032.jpg)
I have to replace the reed. I'm wondering if there's a chance that a Cox Pee Wee .020 reed will fit.. (and the circlip for that matter). I don't own a Pee Wee to be able to measure its reed-housing diameter.
The Cub's reed is .0025" steel. Maybe I can cut the legs shorter on a Cox copper-star reed to fit the .350" diameter Cub housing.
The needle is in good shape... but I decided to apply the "silicone tubing seal" with flat-washer below the spring.
![The OK Cub .060/.059 20231033](https://i.servimg.com/u/f76/18/50/45/90/20231033.jpg)
![The OK Cub .060/.059 20231034](https://i.servimg.com/u/f76/18/50/45/90/20231034.jpg)
![The OK Cub .060/.059 20231035](https://i.servimg.com/u/f76/18/50/45/90/20231035.jpg)
I'm not sure if there's supposed to be a "little mesh screen" over the air-intake.. but I won't try to run the engine without some type of air-filter.
![The OK Cub .060/.059 20231036](https://i.servimg.com/u/f76/18/50/45/90/20231036.jpg)
I gave my .060 a little more love tonight. It wasn't really planned. I was just looking through a box of loose engines.. and saw it there waiting to be paid attention to.
The last maintenance done was to remove the reed-holder assy. to examine. The reed looked creased and I didn't do much more with it until tonight.
There's a "circlip" to hold the reed against the mouth of the venturi like Cox uses.. except it's smaller than a Cox .049 circlip. The reed housing is .350" diameter and has a groove for the circlip to seat into.
![The OK Cub .060/.059 20231031](https://i.servimg.com/u/f76/18/50/45/90/20231031.jpg)
![The OK Cub .060/.059 20231032](https://i.servimg.com/u/f76/18/50/45/90/20231032.jpg)
I have to replace the reed. I'm wondering if there's a chance that a Cox Pee Wee .020 reed will fit.. (and the circlip for that matter). I don't own a Pee Wee to be able to measure its reed-housing diameter.
The Cub's reed is .0025" steel. Maybe I can cut the legs shorter on a Cox copper-star reed to fit the .350" diameter Cub housing.
![Huh...](/users/3015/29/34/60/smiles/3929217648.gif)
The needle is in good shape... but I decided to apply the "silicone tubing seal" with flat-washer below the spring.
![The OK Cub .060/.059 20231033](https://i.servimg.com/u/f76/18/50/45/90/20231033.jpg)
![The OK Cub .060/.059 20231034](https://i.servimg.com/u/f76/18/50/45/90/20231034.jpg)
![The OK Cub .060/.059 20231035](https://i.servimg.com/u/f76/18/50/45/90/20231035.jpg)
I'm not sure if there's supposed to be a "little mesh screen" over the air-intake.. but I won't try to run the engine without some type of air-filter.
![The OK Cub .060/.059 20231036](https://i.servimg.com/u/f76/18/50/45/90/20231036.jpg)
Re: The OK Cub .060/.059
Life is not perfect. I'm wondering if the reed can be salvaged by gently stroking the top side with a smooth tip of something like an edge of a screwdriver with the backside of a spoon as the supporting anvil. Maybe you can burnish out the creases on the reed sufficiently to flatten it and make it properly seal again.
Other option may be manufacture a reed from the mylar of a computer floppy disk.
Other option may be manufacture a reed from the mylar of a computer floppy disk.
GallopingGhostler- Top Poster
Posts : 5513
Join date : 2013-07-13
Age : 70
Location : Clovis NM or NFL KC Chiefs
Re: The OK Cub .060/.059
Roddie, A PeeWee metal reed is .335 across…. The PW reed housing is .345 dia…..
PW circlclip wire dia. is .018 to .025 depending on vintage
The PW’s is close but maybe a little small…. Nothing to loose on trying to salvage your old one…. I like George’s idea with the spoon but use it as the burnishing tool with the reed on a piece of smooth hardwood or glass….Just roll it across instead of pushing so it doesn’t snag and roll up…. Maybe a little oil on the glass to help stick it down…
One more thought on metal reeds, I try to never handle them with bare fingers…. I have a little tool that is simply a straight pin in a bamboo stick…. Dip the tip in castor and the reed will stick to it just fine… Then you can safely move it around as needed…
![The OK Cub .060/.059 D064f910](https://i.servimg.com/u/f39/20/31/87/29/d064f910.jpg)
PW circlclip wire dia. is .018 to .025 depending on vintage
The PW’s is close but maybe a little small…. Nothing to loose on trying to salvage your old one…. I like George’s idea with the spoon but use it as the burnishing tool with the reed on a piece of smooth hardwood or glass….Just roll it across instead of pushing so it doesn’t snag and roll up…. Maybe a little oil on the glass to help stick it down…
One more thought on metal reeds, I try to never handle them with bare fingers…. I have a little tool that is simply a straight pin in a bamboo stick…. Dip the tip in castor and the reed will stick to it just fine… Then you can safely move it around as needed…
![The OK Cub .060/.059 D064f910](https://i.servimg.com/u/f39/20/31/87/29/d064f910.jpg)
rdw777- Diamond Member
Posts : 1520
Join date : 2021-03-11
Location : West Texas
Re: The OK Cub .060/.059
GallopingGhostler wrote:Life is not perfect. I'm wondering if the reed can be salvaged by gently stroking the top side with a smooth tip of something like an edge of a screwdriver with the backside of a spoon as the supporting anvil. Maybe you can burnish out the creases on the reed sufficiently to flatten it and make it properly seal again.
Other option may be manufacture a reed from the mylar of a computer floppy disk.
I have to wonder what happened to this reed.. The tank-side of the reed-housing has a small "gouge" at the opening of the venturi. Someone may have stuck a small screwdriver in there.. and possibly poked at the reed. On closer inspection; it looks like a dent.. rather than a crease. The reed "seat" looks OK.
![The OK Cub .060/.059 Dsc05614](https://i.servimg.com/u/f76/18/50/45/90/dsc05614.jpg)
Yes.. making a reed is something I have done more than once with success.. and thought that I might try that.
Re: The OK Cub .060/.059
rdw777 wrote:Roddie, A PeeWee metal reed is .335 across…. The PW reed housing is .345 dia…..
PW circlclip wire dia. is .018 to .025 depending on vintage
The PW’s is close but maybe a little small…. Nothing to loose on trying to salvage your old one…. I like George’s idea with the spoon but use it as the burnishing tool with the reed on a piece of smooth hardwood or glass….Just roll it across instead of pushing so it doesn’t snag and roll up…. Maybe a little oil on the glass to help stick it down…
One more thought on metal reeds, I try to never handle them with bare fingers…. I have a little tool that is simply a straight pin in a bamboo stick…. Dip the tip in castor and the reed will stick to it just fine… Then you can safely move it around as needed…
Hi Robert, I appreciate the measurements! Thanks!! I remembered that I received a "printed" Cox .020 reed-holder/carb. with a Mylar-star reed, circlip, gasket and screws and also a Goldberg-style engine mount for the Cox 290 Product Engine; printed and assembled by JasonWI as a prize for my entry in the CEF "Cars are the Stars" contest.
![The OK Cub .060/.059 20190740](https://i.servimg.com/u/f76/18/50/45/90/20190740.jpg)
Cox Mylar reeds I've found to measure a consistent .005" thickness.. but I didn't remove the one in the backplate to measure it.
The Cub's reed-housing and circlip are so close to the Cox Pee Wee size. I'm thinking that the circlips might be a standard size that was used on both engines..
![Huh...](/users/3015/29/34/60/smiles/3929217648.gif)
I'd like to try to make an oblong reed like the Cox current generation and see if it will work in the Cub. This Cub's reed-design has protruding "tabs" that locate into notches in the housing, preventing any radial movement. The Cox and Testors reeds can and do rotate below their circlips. I wonder if that would make a difference in the Cub..
![Huh...](/users/3015/29/34/60/smiles/3929217648.gif)
Re: The OK Cub .060/.059
You bet Roddie, I had one taken apart so it was no problem to get the measurements…. Do you have any floppy disk material?….Before I retired I talked the IT guys out of one….I’ll send you a piece if you want to try it….. It’s about .001 thick or just a shade over…
rdw777- Diamond Member
Posts : 1520
Join date : 2021-03-11
Location : West Texas
OK Cub .060 propeller
I'm a creature of habit.. and one of my habits is keeping things in "zip-seal" clear plastic bags. I do this especially with model engines whether complete.. or broken-down into various stages of assembly. I'll generally use a "quart size" freezer-bag as the main bag.. and I have a stock of smaller bags for parts to be kept separate within the main bag. I write dated notes on index cards which go in a separate bag to help keep them clean/legible.
Here's my OK .060's bag..
![The OK Cub .060/.059 _060_e10](https://i.servimg.com/u/f76/18/50/45/90/_060_e10.jpg)
It helps me keep track of stuff. Airplanes get "gallon size" freezer bags while being built.. and also for future notations/mods-changes/parts-swaps etc. along the way. OCD? yes..... very.
Regarding a propeller for the .060; I'm going to try a MA/Windsor 6 X 3. The engine's prop driver has a .180" diameter boss which protrudes approx. .062" into the backside of a propeller's hub-hole. The MA prop's hub-hole is .130" diameter on the front/face and tapers larger at the backside. All of my Cox propellers in the 5-6"d. range have .130" hub-holes front-to-back.. and I didn't want to counter-bore the back of one to fit this engine..
![The OK Cub .060/.059 _060_p11](https://i.servimg.com/u/f76/18/50/45/90/_060_p11.jpg)
![The OK Cub .060/.059 _060_p10](https://i.servimg.com/u/f76/18/50/45/90/_060_p10.jpg)
Here's my OK .060's bag..
![The OK Cub .060/.059 _060_e10](https://i.servimg.com/u/f76/18/50/45/90/_060_e10.jpg)
It helps me keep track of stuff. Airplanes get "gallon size" freezer bags while being built.. and also for future notations/mods-changes/parts-swaps etc. along the way. OCD? yes..... very.
![Shocked](https://2img.net/i/fa/i/smiles/icon_eek.gif)
Regarding a propeller for the .060; I'm going to try a MA/Windsor 6 X 3. The engine's prop driver has a .180" diameter boss which protrudes approx. .062" into the backside of a propeller's hub-hole. The MA prop's hub-hole is .130" diameter on the front/face and tapers larger at the backside. All of my Cox propellers in the 5-6"d. range have .130" hub-holes front-to-back.. and I didn't want to counter-bore the back of one to fit this engine..
![The OK Cub .060/.059 _060_p11](https://i.servimg.com/u/f76/18/50/45/90/_060_p11.jpg)
![The OK Cub .060/.059 _060_p10](https://i.servimg.com/u/f76/18/50/45/90/_060_p10.jpg)
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