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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #1491  
Old 1 Week Ago
MatHormell's Avatar
MatHormell MatHormell is offline
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Join Date: Jul 2015
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Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
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Think he went 103 this pass, I was gaining on him
Quote:
Originally Posted by jkinkade View Post
well done, great times & speed!!
what speed was your friend on softail doing?
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  #1492  
Old 6 Days Ago
A 4 liter V8 eater's Avatar
A 4 liter V8 eater A 4 liter V8 eater is offline
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Join Date: Apr 2005
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Sportster/Buell Model: 883 Flat Track Racer
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Quote:
Originally Posted by MatHormell View Post
Also got to weight the bike. Its 433lbs with a full tank

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I'm glad to hear that. Where do you think most of the weight savings came from?

I have been trying to compensate for my Iron jugs and aftermarket cases, but I have never weighed the bike to see where I'm at. I think my main weight savers are the Lithium battery, XR style tail, Sun rims, Yamaha forks with PM calipers, an aluminum 30 tooth crank sproket, and a titanium front axle. I used to have a compufire starter and aluminum clutch basket which were both slightly lighter than stock. I took out the combination of aluminum basket and compufire fire because the strong starter combined with weak basket starter ring ate up the teeth.

Fingers crossed I'll have an XR1200 crank installed soon too which will save weight. I need to take some measurements of the cases so Aaron can determine if its feasible. My hydraulic press arrives tomorrow.
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  #1493  
Old 5 Days Ago
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Quote:
Originally Posted by A 4 liter V8 eater View Post
I'm glad to hear that. Where do you think most of the weight savings came from?

I have been trying to compensate for my Iron jugs and aftermarket cases, but I have never weighed the bike to see where I'm at. I think my main weight savers are the Lithium battery, XR style tail, Sun rims, Yamaha forks with PM calipers, an aluminum 30 tooth crank sproket, and a titanium front axle. I used to have a compufire starter and aluminum clutch basket which were both slightly lighter than stock. I took out the combination of aluminum basket and compufire fire because the strong starter combined with weak basket starter ring ate up the teeth.

Fingers crossed I'll have an XR1200 crank installed soon too which will save weight. I need to take some measurements of the cases so Aaron can determine if its feasible. My hydraulic press arrives tomorrow.
The biggest loss I would say is the wheels first, then front end, swing arm, oiltank/battery, then all thin small cuts here abd there.. the motor weight savings were pretty much canceled out by the cast irons jugs as far as static weight goes. But yea 433 is great and right about what I guesstimated it would be about. This was with a full tank of fuel as well. May go to an aluminum tank and carbon cover to cut a few more eventually

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