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Post  Jason_WI Fri Jan 31, 2014 1:04 am

Finally got all 6 different types of .020 cylinders. Thin wall, grooved, thick wall, R/C, slotted screen, and mesh screen cylinder.

There was a prototype dual slit .020 cylinder but never went into production.

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Post  ekitten2 Fri Jan 31, 2014 4:22 am

so is there any benifet in a patular one over the outher?
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Post  Cribbs74 Fri Jan 31, 2014 8:48 am

Doubt it. I think the porting is the same.

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Post  iamplanecrazy2 Fri Jan 31, 2014 8:50 am

Nice!
I'm still hunting for one with the slotted screen. Just got one with the mesh screen on eBay about a month ago.
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Post  Jason_WI Fri Jan 31, 2014 5:27 pm

The slotted ones I think are harder to come by. Not sure what the production numbers were on these since only being made for less than a year for each type.
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Post  ian1954 Sat Feb 01, 2014 3:58 pm

Little beauties! I always wondered if the screens restrict these little engines. If there is, I would think that the mesh screen is more free flowing.
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Post  Jason_WI Sat Feb 01, 2014 7:04 pm

My guess is the screen plugged up eventually. Also manufacturing process added time and costs hence was discontinued in favor of the twin slit cylinder for the .049 at least.
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Post  WingingIt74 Wed Feb 05, 2014 4:37 pm

No mufflered Pee Wee?
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Post  Jason_WI Wed Feb 05, 2014 5:34 pm

WingingIt74 wrote:No mufflered Pee Wee?

I have a mufflered Pee Wee but it doesn't use a different cylinder.
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Post  balogh Sun Mar 16, 2014 5:18 am

I have several TD020 engines some with grooved type cylinder, some with thick wall cylinder. I assume these latter are younger than the grooved type. The grooved types also do not have their top fin milled to acommodate the wrench, while the thick wall cylinders have their top fin milled..

Question: were the older, grooved type TD 020 cylinders made with tapered bore?

Because my TD051-s with grooved cylinder do have tapered bore, but the younger TD051-s with thick wall cylinder do not, I assume the same goes with TD020-s too,i.e. grooved cylinders were made with tapered bore.. I read once that COX abandoned the tapered bore design to cut production cost, at least on the TD049 and 051 engines. Does it imply that once the TD 020-s with grooved type cylinders were also made with tapered bore?

My experience with tapered bore is very positive as far as the longevity of engine compression is concerned.
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