How to know which cylinder I have

Glenn Quarles Fri May 08, 2015 11:55 am

Hi friends, I have been reading about all the different numbered cylinders cox has produced and I was wondering if there are actual markings on them. I'm trying to find a #4 or #1.

Thanks for any help!
Glenn

fredvon4 Fri May 08, 2015 1:49 pm

Hi Glen
Some do not have a mark, many do usually the 2, 4, 5, or 7, are stamped some where on the lower part of the cylinder- others are stamped inside the exhaust slit and very hard to see without a magnifier

on the left side of this page (and all others) is an INFO area with History, Instruction sheets, and Cylinder identification

Here is a link
https://www.coxengineforum.com/h23-cylinder-identification

Glenn Quarles Fri May 08, 2015 1:58 pm

Great, thank you!!

Glenn

Glenn Quarles Fri May 08, 2015 5:56 pm

I found the numbers!!! I have a couple number 1's, a couple 2's, one 4 and a bunch that didn't have numbers!

Thanks again for the help!
Glenn

fredvon4 Fri May 08, 2015 7:27 pm

Hey Glen I see you want ad over on the other forum

I suspect you know this but if not---- Bernie at Cox international has every thing you are seeking

http://coxengines.ca/cox-.049-tee-dee-cylinder-and-piston.html

They have the timing and top end shims and a whole host of other goodies

Matt at Ex Model Engines has a bunch of stuff for cox also

http://www.exmodelengines.com/home.php?cat=267

The original #4 TeeDee cylinder had 2 bypass and each had two boost ports...later Cox engineers decided that twin bypass with a single boost port made on each side more power....just a FYI

the twin boost ports were too symmetrical and interrupted good fuel charge to the top end...the off set single boost per side creates a sort of swirl, so they claim

Seems to make sense and my experimenting with original #4 and Bernie's Cylinder / Piston set on TeeDees and Black Widows bears this out

Glenn Quarles Fri May 08, 2015 9:19 pm

Thanks Fred, the parts are ordered!! Good info!

Glenn

dckrsn Fri May 08, 2015 9:41 pm

Hey Glenn, welcome to the forum! Beer Cheers

Lots of info and fun here. Glad you found us.
Bob

Oldenginerod Fri May 08, 2015 10:10 pm

Glenn. If you check out the "Tach Race" link on the left, you will see that the engine I entered won it's class (mouse) using not much more than one of the reproduction Tee Dee cylinders from Cox International, so they work pretty good. With the results I got, I wouldn't bother with an original #4 if performance is what you're after.

Rod.

Glenn Quarles Fri May 08, 2015 11:01 pm

Thanks Bob and Rod! I have been intrigued by the scale reed race and am starting to gather the stuff required to make a decent motor. I always liked the Space Hopper layout and finally found one to buy now I just need to make it competive!

Glenn

**RknRusty** Sat May 09, 2015 12:27 am

Hmmm deja vu, I think I just posted in your thread on SH too. Well welcome to CEF, you found the hidden treasure and repository of Cox Knowledge!
Rusty

getback Sat May 09, 2015 9:19 am

To the CEF Got a airplane in mine for that hopper ?

Glenn Quarles Sat May 09, 2015 11:07 am

I'm thinking of a Lancair 360. I looked at all the different warbirds but didn't really find anything original that had the features I wanted. The Lancair is really swoopy so it will be good!

Glenn

**Admin** Sun May 10, 2015 2:07 am

We're still after some cylinder info, mostly for the other engine sizes. https://www.coxengineforum.com/h23-cylinder-identification

I'm still working on the history section, It'll be awhile before it's ready to be displayed. Been working on it in spare time. For now, I think I'll link it to the Wiki page.

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How to know which cylinder I have

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