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O&R 23 & Brown Jr Empty O&R 23 & Brown Jr

Post  cstatman Mon Jun 27, 2022 7:38 pm

ugh.   i know nothing about sparkies.

maybe I'll get coil & condensor and make em run

yeah, I cleaned up the Brown

O&R 23 & Brown Jr 04ef3a10

O&R 23 & Brown Jr 2596d010
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Post  Ken Cook Mon Jun 27, 2022 8:21 pm

I run my sparkers on glow fuel. Don't put glow fuel in that clear fuel bowl, it will melt. Coils can be pretty expensive these days. I know a lot of my club members use a stove fuel from Walmart and some sort of 2 stroke oil which offers impeccable runs.
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Post  andrew Mon Jun 27, 2022 10:11 pm

Your "clean up" work looks really good. Keep us up to date on your progress in getting it running.
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Post  GallopingGhostler Mon Jun 27, 2022 11:10 pm

Ken Cook wrote:I run my sparkers on glow fuel. Don't put glow fuel in that clear fuel bowl, it will melt.  Coils can be pretty expensive these days. I know a lot of my club members use a stove fuel from Walmart and some sort of 2 stroke oil which offers impeccable runs.
Good Advice, Ken, I would have never known that the early plastic used in some of these is incompatible with glow fuel, synth oil or the nitro component of it. I guess it goes to show how early these elementary plastics were used, wonder if it is a type of polystyrene.
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Post  crankbndr Tue Jun 28, 2022 5:42 am

Woodys Model Engines is a place for parts and coils.

https://www.woodysengines.com/shopping.htm
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Post  sosam117 Tue Jun 28, 2022 6:22 am

Here is some information for you from a group of "old tiers" that run "sparkies"
http://www.antiquemodeler.org/

They are SAM (Society of Antique Modelers) and they run all different spark ignition engines.

Here is some info on electronic ignition system for your engine which is better to ues than the old condenser units.
https://www.rcgroups.com/forums/showthread.php?4062335-Larry-Davids-TIM-4-Transistorized-Spark-Ignition-System-with-Davidson-Coil

The person who posted it is Mike Myers and he has a good collection of O&R and Brown Jr. spark ignition engines.

Here is Larry Davidson's website to get info on his ignition system and he can also help you on the type of fuel/mixture that you'll need for your engines.

I have competed against Larry in contest with his sparkies and he is a constant winner in that class.

Here are two of my "sparkie" engines which I use Davidson's ignition system and the fuel/mixture he recommended:
Colman fuel and 80 weight oil (mix)


Arden .099 on the left and on the right is the McCoy .098 --- modified for spark ignition.
O&R 23 & Brown Jr 01_ard14
O&R 23 & Brown Jr 01_ard15
O&R 23 & Brown Jr 02_mcc14

By the way, Mike Myers is out in California where you are.
There is a main group of SAM members out there in California, maybe one of them live close by you to help you out?
Or they can have you bring your engine to the flying field (around there) to show you?


Last edited by sosam117 on Tue Jun 28, 2022 6:27 am; edited 2 times in total (Reason for editing : California information.)
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Post  rsv1cox Tue Jun 28, 2022 7:07 am

Pretty engines Mike, and Charles - your branching out and looking good!
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Post  getback Tue Jun 28, 2022 12:57 pm

Looking good Charles , I got the Brown Jr. and a few others that i can't recall at the time Cyclone 30 and anther that was a washing machine co. i want to say DHL but could bee wrong need to get them out .. I got a board set up with a small and Large Tatone mounts , got to get the coil fuel tank Ing. system all together and get a Bad boy running soon , i got decussated tring to find 75-80W 2cly. oil but ended up with 70W should bee good and haven't finished what I started a few years . I will try and get some pics tomorrow and a Instructions manual i have for one Very Happy You did a good job cleaning them up!
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Post  sosam117 Tue Jun 28, 2022 2:00 pm

rsv1cox wrote:Pretty engines Mike, and Charles - your branching out and looking good!

Thanks!
Just had to clean them up a little from them not being used for years.
That is all that was done.

The tag on the McCoy says it ran at 10,200RPM on an 8-4 prop.
Last time it was run was Jan. 29, 2010 (1-29-10)
Other side of the tag give the fuel mixture on it. (Future reference as my brain gets older)
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Post  cstatman Tue Jun 28, 2022 11:34 pm

thanks gentlemen, lots of VERY good info

Also - I need to lay off the bourbon, the cleaned up is an O&R 23

i haven't started on the Brown Jr. -- yet.
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Post  davidll1984 Wed Jun 29, 2022 1:34 pm

If you want you could use this ignition modulehttps://www.stirlingkit.com/products/rcexl-high-voltage-cdi-ignition-for-me-8-1-4-32-spark-plug-single-cylinder-gasoline-engine?variant=39867174486208     Or this less expensive model https://www.stirlingkit.com/collections/internal-combustion-engine/products/hit-miss-gas-vertical-engine-spare-parts-ignition-accessories This one works with three double A battery  or only two AA work just less run time like 2h long only lol! Its posible To bypas the hall sensor and triger ignition wit point y tink Huh... But the more expensive top one is exactly made for that one with point
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Post  rdw777 Wed Jun 29, 2022 2:21 pm

Nice Sparkers, I know you have to get them running first then…Are you planning to fly them?…. Never owned one but think they are interesting….
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Post  cstatman Wed Jun 29, 2022 5:11 pm

find em
clean em
test bench em
then try to fly em

i've got too many in between steps 2 & 3. Need to get em moving in the process Smile

sparkies intrigue me, cause I have absolutely ZERO experience with them, but like the idea
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Post  davidll1984 Wed Jun 29, 2022 5:54 pm

Yes it's different but quite simple I find the settings of a diesel more complex with the two we have to adjust two things, one the compression wit diesel and the other the timing advance of fire on old sparky engine For the dignition system you can simplify using one of the two systems that I am suggesting even here it is indicated for 4 strokes or hit and miss. It work wit two stroke engine
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Post  getback Thu Jun 30, 2022 7:25 am

I look at it this way >as a mechanic early in life and put my fair share of point/condensers in and adjusted timing about every time , this should bee more fun than expected , The one .30 size i have takes a 14"/6 woodies that i did score at a swap meet should bee a kicker . Very Happy Shocked Very Happy
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Post  GallopingGhostler Thu Jun 30, 2022 8:38 am

cstatman wrote:ugh. i know nothing about sparkies. maybe I'll get coil & condensor and make em run. yeah, I cleaned up the Brown
O&R 23 & Brown Jr 2596d010
http://sceptreflight.com/Model%20Engine%20Tests/Brown%20Junior%20Model%20D.html

The .25 HP Brown Junior, an amazing engine, turning a 14x6 prop at 6,000 RPM in flight, could power an 8 foot wingspan FF cabin.

Try that with the same HP .15 glow turning an 8 inch propeller at 14,000 RPM. There's more to the science than HP alone.
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Post  getback Thu Jun 30, 2022 10:08 am

Here ya go Charles one of our former i going to say members , hes in Spain and has his own Forum going no . But while he was here >> https://www.coxengineforum.com/t9528-baby-cyclone-363-rebuilt-of-first-american-petrol-engine-production?highlight=cyclone+60 This Site Rocks!
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Post  crankbndr Thu Jun 30, 2022 12:04 pm

Just a little note on Woodys. The website only shows a handful of parts that are available. You need to get the catalog of parts to see the thousands of parts that are available. Most of the parts he manufactured or had manufactured and are drop it.
I believe Woody passed away and someone keep the website up and running.


Parts for Brown

O&R 23 & Brown Jr Wood10

O&R 23 & Brown Jr Wood210


O&R parts


O&R 23 & Brown Jr Woodor10

O&R 23 & Brown Jr Woodor11
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Post  cstatman Thu Jun 30, 2022 12:13 pm

OMG --- I DO NEED 3 of the parts on the list you posted. THANK YOU SO MUCH!!!!

(almost as fun as finding a Cox .010 crankshaft!)
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Post  crankbndr Thu Jun 30, 2022 12:30 pm

If you don't want to buy the catalog ($24) you can find the order form on the site and you can get the part # from my catalog.


O&R 23 & Brown Jr Ae_ord10


O&R 23 & Brown Jr Ae_ord11
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