Crankshaft experiment

Just some fun to show. Links, pics or movies.

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Jack Gifford
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Re: Crankshaft experiment

Post by Jack Gifford » Wed Jul 03, 2019 7:32 am

Well, yes, it's intended to look like part of an airplane. The body is a fiberglas replica of a P-38 drop tank. Starting in 1947 hot rodders used surplus aluminum drop tanks for the original landspeed racing "lakesters".
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Re: Crankshaft experiment

Post by Jack Gifford » Wed Aug 07, 2019 3:58 am

Another test-run with no breakage, this time on a quarter-mile track. Didn't learn much, due to a bad choice of gearing- too "tall" to get the engine into its intended rev range.
"Motley" bike history: Horex 400, 1940 HD 45 FH, HD Baja 100, '49 Indian Scout 440, Victor 441 Roadster, H*nda TL125, Guzzi V50, H*nda FT500, 400-4, NX250
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Re: Crankshaft experiment

Post by beat » Thu Aug 08, 2019 9:10 pm

well, - at least no breakage.

wich is something of a success.

:grin: :grin:
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Re: Crankshaft experiment

Post by Jack Gifford » Sun Aug 25, 2019 3:39 am

Tomorrow I'll be at the tenth-mile drag event again... This time with gearing that's more appropriate... :oops:
"Motley" bike history: Horex 400, 1940 HD 45 FH, HD Baja 100, '49 Indian Scout 440, Victor 441 Roadster, H*nda TL125, Guzzi V50, H*nda FT500, 400-4, NX250
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Re: Crankshaft experiment

Post by beat » Mon Aug 26, 2019 9:08 pm

:ok <209

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Re: Crankshaft experiment

Post by Jack Gifford » Tue Aug 27, 2019 6:06 am

The race car treated me good once more- no issues. :thumb
85.3 MPH at the end of the tenth-of-a-mile was 7,100 RPM, which is getting closer to the engine speed I want to see.
I need to improve some things in the cramped cockpit. For example, the required helmet and HANS device prevent me from tipping my head enough to view the harness buckle- a crew member must reach in and buckle it.
"Motley" bike history: Horex 400, 1940 HD 45 FH, HD Baja 100, '49 Indian Scout 440, Victor 441 Roadster, H*nda TL125, Guzzi V50, H*nda FT500, 400-4, NX250
Aside from bikes: known as the "guru" of M/T hemi Pontiacs

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Re: Crankshaft experiment

Post by Jack Gifford » Mon Sep 30, 2019 2:57 am

Got in two more tenth-mile runs with no damage. Had to abort the first run- about two seconds out the rear tires broke traction and tried to pass me! Gearing was only increased about 12% and I didn't expect wheelspin. On the second run I stayed away from full throttle for a couple of seconds, so I didn't see the 8,000 RPM I wanted- only 7,250. No more running this year, but I'm anxious to get to a landspeed track next season.
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Re: Crankshaft experiment

Post by beat » Thu Oct 03, 2019 2:32 pm

wishes you the best for next season..... :thumb :thumb :thumb

beat

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Re: Crankshaft experiment

Post by Jack Gifford » Fri Oct 04, 2019 5:23 am

Thanks Beat! I'll be watching for some podium finishes with your 3-wheeler.
"Motley" bike history: Horex 400, 1940 HD 45 FH, HD Baja 100, '49 Indian Scout 440, Victor 441 Roadster, H*nda TL125, Guzzi V50, H*nda FT500, 400-4, NX250
Aside from bikes: known as the "guru" of M/T hemi Pontiacs

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