Why is there a #2 stamped on some Tee Dee .049/.051'S

Basswood Mon Apr 27, 2020 7:23 pm

Hi all.
Well I've looked all around the forum for an answer to this question and could not find it.
Does anyone know why there is a #2 stamped on top of the crank case mounting tab of some Cox
Tee Dee .049/.051"s ?
Thanks
Basswood

Why is there a #2 stamped on some Tee Dee .049/.051'S 2_on_c10

Jason_WI Mon Apr 27, 2020 8:03 pm

Cox changed the crankshaft and crankcase in the early 70s. This was a way for them to differentiate between what was existing stock and new stock

The crank web thickness increased for the update. So an older crank in a new crankcase would have a excessive front end crankshaft end play. A new crank in an old crankcase would be tight when assembled.

happydad Mon Apr 27, 2020 10:18 pm

Basswood wrote:Hi all.
Well I've looked all around the forum for an answer to this question and could not find it.
Does anyone know why there is a #2 stamped on top of the crank case mounting tab of some Cox
Tee Dee .049/.051"s ?
Thanks
Basswood

I took some data on 10 to 12 (apps). Tee Dee and Medallion crankcase-crankshaft combinations about 7 or 8 years ago. I can’t remember the title right now, but I will npreseach a little and edit my post if I find it tonight.

Edited 4-27-2020 8:22p.m. PST. I found the data.
“ tee Dee and medallion crankcase and crankshaft data”
Exeter the above, without quotes, into the search box in the top left of screen, just below donate.
Enjoy.
Happydad RC Plane

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Why is there a #2 stamped on some Tee Dee .049/.051'S

Why is there a #2 stamped on some Tee Dee .049/.051'S

Re: Why is there a #2 stamped on some Tee Dee .049/.051'S

There is data

Re: Why is there a #2 stamped on some Tee Dee .049/.051'S