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Post  jsesere Thu Jun 02, 2016 12:44 pm

Does anyone have a picture of a Pee Wee .020 heavy duty diesel crank? I think Davis may have made one.
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Post  Surfer_kris Thu Jun 02, 2016 2:22 pm

I don't think there ever was one for the pee wee engine. The stock crank has held up fine for me, but you have made sure that you have a good sealing head where you can release the compression setting enough. The DDD one with their teflon disks are very dangerous here. Mine was to high on the compression setting, plus the Teflon would never seal well enough. The solution is to grind off a bit from the counter piston in lathe, and to make a disc from sheet metal instead. Brass has worked well for me there.
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Post  jsesere Thu Jun 02, 2016 2:24 pm

I contacted Davis and he made one at one time, but he didn't have any pictures.
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Post  jsesere Thu Jun 02, 2016 3:14 pm

Thanks for the info.
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Post  Surfer_kris Thu Jun 02, 2016 3:48 pm

Here is a short video of mine after the fix, spins a graupner 6x3 prop at around 9500rpm, and pulls a J3 cub around with authority. Smile

https://www.youtube.com/watch?v=mMJlI0rgXVo



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Post  jsesere Thu Jun 02, 2016 4:18 pm

Nice.
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