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Post  MauricioB Thu Mar 30, 2017 11:05 am

I know that there is a post regarding new purchases, leases or acquisitions of engines and / or parts of Cox, but I can not find that post to add this material.
If the administrator moves it to the indicated post will be a way to get it sorted, Thanks.

A few hours ago I got in the mail for this purchase, it's a Tee Dee 049 engine that was never removed from its bundle with presinto. The disassembly keys are still inside the box and have not yet been opened.
Can someone tell me the year of manufacture of this engine given its packaging ?, thank you! Smile
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Post  Cribbs74 Thu Mar 30, 2017 12:28 pm

Judging by the special notice card, on or around Feb 1974.
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Post  MauricioB Thu Mar 30, 2017 1:15 pm

@Cribbs74 wrote:Judging by the special notice card, on or around Feb 1974.

Thank you very much for the information. It is fortunate to have found this piece of Cox for these lands!
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Post  Kim Thu Mar 30, 2017 3:01 pm

Congrats on your great acquisition Mauricio !!!!
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Post  MauricioB Thu Mar 30, 2017 4:54 pm

@Kim wrote:Congrats on your great acquisition Mauricio !!!!

Thank you very much Kim !, I did not want to let it go, because who knows if it ever reappears something like this, is not common, will be for now kept as a jewel or a treasure and with the love that deserves.
I always look at the history of many US manufacturers, their history, their inventiveness, is to admire and respect.
A hug for you friend!
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Post  rsv1cox Thu Mar 30, 2017 5:16 pm

A new in the box crystal cased TeeDee /049 is always a nice find Mauricio, you did very well.

Bob
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Post  MauricioB Thu Mar 30, 2017 10:01 pm

@rsv1cox wrote:A new in the box crystal cased TeeDee /049 is always a nice find Mauricio, you did very well.  

Bob

Thanks Bob, you will be well taken care of here! Smile
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Post  balogh Fri Mar 31, 2017 11:37 pm

Mauricio a few ideas how I try to identify the production year of TD049-s of which I also have collected a few new in Chrystal box:

The venturi had no screen before about 1974
The cylinder is stepped wall on older and thick wall on younger engines since about 1976. The ones from the late 60-s or before  still have tapered bore cylinders. You cannot push the piston beyond top dead center. (Even the stepped wall cylinders did not all have tapered bore after around early 70-s
The crank end of the piston rod has an oiling hole on the very first engines
The top fin was not milled on the older stepped wall cylinders for the wrench
The engine manual sheet had a printing year on the bottom of the first page and the engine cannot be older but can be younger than that year printed.
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Post  MauricioB Thu Apr 06, 2017 10:21 am

@balogh wrote:Mauricio a few ideas how I try to identify the production year of TD049-s of which I also have collected a few new in Chrystal box:

The venturi had no screen before about 1974
The cylinder is stepped wall on older and thick wall on younger engines since about 1976. The ones from the late 60-s or before  still have tapered bore cylinders. You cannot push the piston beyond top dead center. (Even the stepped wall cylinders did not all have tapered bore after around early 70-s
The crank end of the piston rod has an oiling hole on the very first engines
The top fin was not milled on the older stepped wall cylinders for the wrench
The engine manual sheet had a printing year on the bottom of the first page and the engine cannot be older but can be younger than that year printed.

Many thanks András for all these points that I will take into account when observing my engine. Without doubt is a 1974 on. Since much of the data expressed guide me to determine that year of manufacture!
Thank you!
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Post  Mark Boesen Thu Apr 06, 2017 11:25 pm

@Cribbs74 wrote:Judging by the special notice card, on or around Feb 1974.



Hi Ron,

What does the special notice card say? can somebody post a clear photo of it.

The engine in question has the later thick wall type cylinder, which i thought was made from '75 to '78, give or take? Also the stem on the glowhead is the late 70's non tapered version?

Also remember the '2' stamp on the case, in the early '70's Cox strengthened the Tee Dee crankshaft web, they stamped a "2" on the beam to indicate that the new crankshaft had been installed until old stock was gone.


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Post  MauricioB Thu Apr 06, 2017 11:43 pm

@Mark Boesen wrote:
@Cribbs74 wrote:Judging by the special notice card, on or around Feb 1974.



Hi Ron,

What does the special notice card say? can somebody post a clear photo of it.

The engine in question has the later thick wall type cylinder, which i thought was made from '75 to '78, give or take? Also the stem on the glowhead is the late 70's non tapered version?

Also remember the '2' stamp on the case, in the early '70's Cox strengthened the Tee Dee crankshaft web, they stamped a "2" on the beam to indicate that the new crankshaft had been installed until old stock was gone.



Immediately Mark, here is the photo, can you read it clearly?
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Post  Mark Boesen Fri Apr 07, 2017 7:56 am

That's the date the info was printed, not the date the engine was made, Cox likely used those for several years. Check the print date on a newer info sheet might help. At least it tells you its not older then '74. Judging from the straight stem and thick cylinder,  I'd guess '76-'78?? Lol, your best bet would to call it a mid seventies and leave it at that?
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Post  MauricioB Sat Apr 08, 2017 11:39 am

@Mark Boesen wrote:That's the date the info was printed, not the date the engine was made, Cox likely used those for several years. Check the print date on a newer info sheet might help. At least it tells you its not older then '74. Judging from the straight stem and thick cylinder,  I'd guess '76-'78?? Lol, your best bet would to call it a mid seventies and leave it at that?

Thanks Mark, Yes I think it is good to place the pieces within certain parameters and when we talk about them, if we do not have the precise data, we can locate it within a certain decade and relate it to history.
Thank you very much!!
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Post  MauricioB Thu Apr 13, 2017 10:31 pm

There is a saying in these places that says "no two without three"! To see if a third interesting engine appears !.
It turns out that after finding the 049 Tee Dee, appeared this Cox Medallion 049 that his previous owner had only gone once, I took the risk and I trusted the seller and hit! The engine is like new !.
Today I put an original muffler of Cox and I gave march, it is a wonder !, here the photos! Small Cox Logo Small Cox Logo Small Cox Logo Very Happy
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Post  1/2A Nut Thu Apr 13, 2017 10:42 pm

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Top Tip:
A guy that use to work for cox says at the mod and hop up room they would factory
adjust the cylinders to line up as shown per your TD with the transfer ports on the
sides fuel and air would accelerate more so into the combustion chamber by way of
the spinning flywheel. He says most engine set up this way would get 700 rpm ish
more static than an engine set up they other way with the exhaust ports to the sides.


You have an ideal TD, I try to only buy ones that are this way.

Small Cox Logo Wink
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Post  Mark Boesen Thu Apr 13, 2017 10:58 pm

Yep, Kern Kraft/Kustom Kraftsmanship sold shim kits to help line up ports and get piston/cylinder deck height correct.

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Post  MauricioB Thu Apr 13, 2017 11:05 pm

Friend Brad! What a good datum, I think I'm a lucky look at some of my Tee Dee!Very Happy
(But I must also say that here for my land, there are not many opportunities, so when something appears, there is no doubt if one does not want to lose a piece) Shocked

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Post  1/2A Nut Thu Apr 13, 2017 11:36 pm

Woohooo yesss those where factory set correctly.
You have 4 very good engines that should provide
a bit extra power! Eyebrows
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Post  MauricioB Thu Apr 13, 2017 11:55 pm

@1/2A Nut wrote:Woohooo yesss those where factory set correctly.
You have 4 very good engines that should provide
a bit extra power!  Eyebrows

Beer Cheers Beer Cheers Beer Cheers I'd take a couple of beers with you to celebrate! And I would love to share an afternoon with you at my club!
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Post  1/2A Nut Thu Apr 13, 2017 11:57 pm

Very nice field you have cheers Beer Cheers
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Post  MauricioB Fri Apr 14, 2017 12:00 am

Ohhh I started looking at my engines and the model Mini Bird, has a Tee Dee with those characteristics! BINGO! Very Happy
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Post  getback Fri Apr 14, 2017 7:57 am

Nice looking group of engines Mauricio !! Thanks for the info Mark i saved it for future reference , indexing the cly. If it takes the SPI out somewhat and you want more would you grind the the exh. to get more ? Huh... reason i ask i have done this and takes alot of shims if the cly. is off a bit . Popcorn
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Post  Oldenginerod Fri Apr 14, 2017 5:06 pm

Repositioning a cylinder may end up being a bit of a compromise. It would take some experimenting to find out if having optimum SPI was of greater benefit than transfer port position. It would be pretty rare to find an engine which could be adjusted to have the piston at the exact TDC height required, have exactly .012" SPI (as recommended) and also have the ports in the correct orientation. Rather than shimming the cylinder to the otimal position, you could "over shim" and then rub a little off the cylinder seat of the crankcase to get it more accurate. What I mean is, the thinnest shim may be too thick and lifts the cylinder just that bit too much, so you could come back part way by sanding down the seat slightly.
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Post  getback Fri Apr 14, 2017 9:29 pm

George are you saying DECK the CRANKCASE? i get that since that is where the seat is Easter Bunny I missed that somewhere  tongue when i was trying it one time . feel like a Turkey a lot of life lately Smile   Thanks !!
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Post  MauricioB Wed Jan 24, 2018 8:26 am

Happily I share my joy with you, today I received these beautiful pieces.
A new Cox Medallion .049 RC
A new Cox Tee Dee .020
Three sets Cylinder-piston-rod and glow plug new
Five glow plug .020 new
A Reset Tool for Cox .020
A Reset Tool for Cox .010
As a detail unfortunately did not come the shank of the set Reset Tool for Cox .010, but it is not something that can not be resolved. We are already working on that.
My most sincere thanks to:
  * Steve Thornton, (Cox Medallion .049 rc in immaculate condition! NEW!)
* Seller: abyssiniancats on Ebay (Cox Tee Dee .020 NEW)
* Steve Adams - Select Hobbies, (sets of Cox .020, glow plug and tools Reset Tool .010 and .020)
* Jacob - Brad and Tee Bee, who gave me contact information.
My special thanks to Pablo Ojeda, who made it possible to gather the elements so that they are present here today cheers sunny Airplane

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