stunthanger.com
Engine basics => Engine set up tips => Topic started by: Bootlegger on February 23, 2020, 04:55:22 PM
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I am no sure where this should go so I'll start here, I have an O S 30 stunt engine that I need some allen socket screws for, but I don't know the thred or the pitch, where might I get them, also might need a couple of the gasket sets also, tanks a lot...
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Hi Gil, I believe Jim Lee can help you with the socket head bolts .
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Theyve got a soft aluminum head gasket , burried up in the ' rebate ' . Tease out with a scalpel tip . Re Roll Flat with round thing afterward .
Lotta guys just use silicone High Temp, on backplates these days .
Put a ' Large ' of the three OS Max 20 intakes in a O S 30 , centuries ago . Theyre essentially a 35 - S . Half the bits interchange .
The H 29 - R unbelievably has the same piston / liner / rod / wrist pin . So your allowed to run it on 20 % Nitro & race props too .
Bolts are 2 1/2 or 3 m.m. metric . or suchlike, same as 35 - S anyway .
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The rear cover and head bolts are M3x0.6mm not a common size. Micro Fastners.com and Lee Machine has these available. As for gaskets give Randy Smith (Aero Products) a call he will be able to take care of those and maybe the bolts too. Yogi
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Guy's I sure do than you a lot, Randy Smith suggested tapping 4-40 and it worked great so here is an up F Y I ..Bootlegger
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Guy's I sure do than you a lot, Randy Smith suggested tapping 4-40 and it worked great so here is an up F Y I ..Bootlegger
Hi Gil I would not tap the holes I would just use the 4-40 bolts, they are close enough that no tap is needed, I also sent a email with the parts you wanted cost on
Randy