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Engine weight reduction?


rockenrail

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Wondering what you guys have lightened inside your engine? I see everyone buying Ti bolts and running suuuuuper thin chromoly for everything. I do not see much talk about lightening internal engine parts. I am getting ready to start assembling my engine and this would be a good time to lighten a few things up. I see quite a few ways to take some rotating weight out of my transmission. Remove first gear, remove teeth from unused gears, remove "cogs" that drive first gear. How about turning down the center of the clutch rod to save some weight? Maybe some shorter bolts for the less important stuff?  

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You are on the right track. If memory serves me right there is about 3 pounds to be found in the motor and about 4 on the motor. However, you better have some serious time to burn! And for the love of all things holly, if you're REALLY going to try and cut weight, don't run a fucking billet stator cover!

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You are on the right track. If memory serves me right there is about 3 pounds to be found in the motor and about 4 on the motor. However, you better have some serious time to burn! And for the love of all things holly, if you're REALLY going to try and cut weight, don't run a fucking billet stator cover!

LOL. nope i have a stock plastic cover with the rear sprocket cover section cut off. I am not saying that i want to save every possible ounce at any cost, BUT if there are some very easy simple tricks.....I am all ears.

 

My chassis will be a modded stocker with .065 chromoly front half and DUAL a arms.

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I've been really been thinking of ways to crack down on weight as well.

 

Ditch the kick assembly and set up for bump start, plastic side cover, titanium clutch push rod and any hardware can be switched inside and out of the motor, ditch the oil splash guides, machine the cutch cover. For you drag only guys ditching the radiator you can just nix the water pomp assembly. need to seal it though. There is weight to be saved by ditching the OEM flywheel and stator for a PVL, but to some the learning curve isn't worth the weight savings.

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Go thinner than .065

What do you suggest? 049? 035?

 

The difference from 1" 065 to 049 is .15 per foot. How many feet do you use when you front half a bike? Now go look at the strength difference from 065 to 049. Then go look at the weight difference from 049 to 035 and look at the strength difference.

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Has anyone ever seen a composite clutch cover yet? Seems like this would be next big thing for drag guys wanting to loose weight. no kicker no w/p.

 

Pvl is easy no real learning curve and light as can be. You can lighten crank webs but some rotating weight is good to have.

 

On chassis tube size 1" .049 is iffy. As green pointed out the weight savings vs strength is not worth it.

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  • 2 years later...

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