Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Sport 240 80" Wing - 19lbs 150mph ALL DAY LONG

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Old 10-31-2002, 04:17 AM
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thedog4993
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Default Sport 240 80" Wing - 19lbs 150mph ALL DAY LONG

Sport 240 w/ Supertiger 4500 turns APC 17x16 two piece at 9800rpm. Last radar gun was 149.7 out of the turn. Pipe and header with some internal work but the best part - 10% nitro and 15% oil. Completely undefeatable so they had to change the engine size for the pylon racing we do. Bad to the bone to see four 80" wing planes going head to head. Anyway already have ST3250 that I had frozen to -400 F, turning an APC 17x14 two peice at 9200 with no internal work yet. If crank stays together hope to achieve 11,500 to 12,000 rpm.
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Old 10-31-2002, 04:32 AM
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PAINLESS
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Default Sport 240 80" Wing - 19lbs 150mph ALL DAY LONG

Lets see some pics.

I have heard of the freezing you mention being done on some Kart engine parts, pistons & rods. Although I don't recall what the exact benefit was. I assume it increases strength some how.

The after market motorcycle piston makers are starting to coat their pistons to reduce friction. May be the next big thing in model engines.
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Old 11-02-2002, 11:17 PM
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Default Sport 240 80" Wing - 19lbs 150mph ALL DAY LONG

freezing metal will make the atoms realign in a non-random order. With doing this the metal will wear better and be slightly stronger.
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Old 11-07-2002, 12:34 AM
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Default dog gone bad

who is that dog guy anyway ???
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