Fuel Moto Cylinder Head R&D Dyno Test Info
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We expect this combination to be within the reasonable threshold of what is still considered reliable with the stock crank. It really comes down to shock load on the crank which is greatly determined by how the bike is driven. If you are doing high RPM launches or wheelies you will likely want to consider having the crank serviced, on the other hand when we were durability testing last year we made over 150HP/135Tq and pounded the bike on the street and at the drag strip with a completely stock crank and did not have any issues.
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
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Price is looking real good, I'm just going to wait a little bit and see what the compression and cam change do, and durability and characteristics of the engine results, from what I see so far I'll be setting up a time and road trip, I know it's a long way but I plan to spend some time in Ill and Mich anyway, so if I can knock this out in the same trip, great.
#17
I know of one 107 that twisted a crank (not a FM build). But then again this guy was know as the wheelie king! (350+ pound man) That bike was beat constantly for just over 28,000 miles before she gave in. Maybe a "normal" rider would never have a issue.
Last edited by snowman2010; 03-27-2011 at 02:12 PM.
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And with all due respect to Jamie, a stock crank may work for a while at elevated power levels, but I sure wouldn't risk it much past 115 ft-lbs of torque.
My point being that if you want to make reliable power, you have to beef up everything, not just the sexy parts.