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TD .15 Mk II!!!!!!!!!! on ebay!!!!!!!! Cox_ba12




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TD .15 Mk II!!!!!!!!!! on ebay!!!!!!!! Pixel

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Post  GermanBeez Mon Jan 02, 2012 4:30 am

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Post  nitroairplane Mon Jan 02, 2012 4:43 am

We have never seen one of those on eBay!
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Post  Cribbs74 Mon Jan 02, 2012 7:17 am

Saw that last night, looked neat but, apart from what the seller described as being different I have no idea what it is or how it came to be. Anybody care to enlighten me?
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Post  Cribbs74 Mon Jan 02, 2012 7:22 am

Uh, nevermind, the rundown is on the cox engine info site. I always forget about thay site until after I write the silly questions.......
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Post  dankar04 Mon Jan 02, 2012 10:36 am

These make pretty nice runners.
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Post  crankbndr Tue Jan 03, 2012 7:04 am

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Post  microflitedude Tue Jan 03, 2012 7:19 am

Oooooh, I like that one much better.
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Post  PV Pilot Tue Jan 03, 2012 7:41 am

What makes them so special compared to the TeeDee 15?,, the anodizing??
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Post  GermanBeez Tue Jan 03, 2012 7:52 am

oh yeah, i found that one too!
the special thing about them is that they have only one exhaust port. throught that, cox was able
to put a true 3 way schnürle porting into the engine, which is standard now in most high performance
rc engines. also, the piston is connected via a wrist pin, not the classic ball and socket, which improves the stability
of the engine, along with a thicker cylinder wall. this solved the issue of the .15 engine's cylinder walls being rather delicate and unstabil.
hope i could help! ("+" me, if you want Smile )
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Post  microflitedude Tue Jan 03, 2012 11:01 am

You get a "+" from me. Very Happy
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Post  GermanBeez Wed Jan 04, 2012 2:35 am

why, tanks! lol
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Post  John Goddard Wed Jan 04, 2012 4:23 am

GermanBeez wrote:oh yeah, i found that one too!
the special thing about them is that they have only one exhaust port. throught that, cox was able
to put a true 3 way schnürle porting into the engine, which is standard now in most high performance
rc engines. also, the piston is connected via a wrist pin, not the classic ball and socket, which improves the stability
of the engine, along with a thicker cylinder wall. this solved the issue of the .15 engine's cylinder walls being rather delicate and unstabil.
hope i could help! ("+" me, if you want Smile )
Beez

My 15 Medallion RC has a wrist/gudgeon pin does that make it a later one?
TD .15 Mk II!!!!!!!!!! on ebay!!!!!!!! Pictur22
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Post  GermanBeez Wed Jan 04, 2012 4:32 am

they only built the ball joint ones in the first year of production or so, but due to the high vibration loads on the
joint, they changed to wristpin pretty quick. taking a look at the design of your engines cylinder, i'd
say it's out of the 70's or so. this is the "improved" version with the reinforced cylinder wall.
hope i could help ya!
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Post  John Goddard Wed Jan 04, 2012 5:24 am

Cheers BEEZ class info
Very Happy
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Post  GermanBeez Wed Jan 04, 2012 8:30 am

you can learn a LOT from good ol' uncle martin's site:
http://www.mh-aerotools.de/airfoils/cox_frameset.htm

Very Happy
cheers back
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Post  Jason_WI Sun Jan 08, 2012 11:19 pm

Why was there a huge price gap between the 2 engines listed in this thread?

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Post  jsesere Mon Jan 09, 2012 2:40 am

The seller rueleebob who is selling the higher priced .15 is a pro seller. He gets top $$$ for everything he sells and always sells mint items.
Check out this .15 piston.
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Post  PV Pilot Mon Jan 09, 2012 5:22 am

Jeez, looks like someone got caught up in the moment, or have been watching to many auction house shown on the History/discovery channel. $325.
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Post  GermanBeez Mon Jan 09, 2012 7:07 am

lol, "Auction Kings: TD Mk II"- now that would be interesting!
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