660/700 build - Yamaha Raptor Forum
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post #1 of 21 (permalink) Old 02-21-2015, 04:42 PM Thread Starter
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660/700 build

Starting a new build, 660 frame 700 engine. 300ft drag bike. Short term goal is to hit a 3.99, but the ultimate goal is to set the West Michigan Sand Dragway 4 stroke big block track record. Build won't hit the track until 2016, as I have a 700 drag bike to finish first. Just thought I'd get the ball rolling.

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post #2 of 21 (permalink) Old 02-22-2015, 09:47 AM
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What is the advantage of using the 660 frame with a 700 motor? Are they lighter or just had a free 660 platform?

--2009 Raptor 727 ~SOLD~
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post #3 of 21 (permalink) Old 02-22-2015, 10:08 AM Thread Starter
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660 frame is lighter, but mainly because it was free. Lol.
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post #4 of 21 (permalink) Old 02-22-2015, 01:27 PM
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What is the advantage of using the 660 frame with a 700 motor? Are they lighter or just had a free 660 platform?
I was wondering the same question. Te beat me to ask. Thanks.
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post #5 of 21 (permalink) Old 02-22-2015, 10:09 PM Thread Starter
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Subby cut, still need to cut the rear and do a ton of grinding to clean it up nice. It's a start.

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post #6 of 21 (permalink) Old 02-23-2015, 06:46 AM
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gonna do a single a arm rigid set up?
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post #7 of 21 (permalink) Old 02-23-2015, 10:38 AM Thread Starter
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Yes, already cut that section out of the frame, I committed to it now.
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post #8 of 21 (permalink) Old 02-23-2015, 11:06 AM
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aight sweet. do a before weight of frame? can be lightened alot i think...
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post #9 of 21 (permalink) Old 02-23-2015, 11:34 AM Thread Starter
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I tried to weigh the frame before but the only thing I had to weigh it was a fish scale and that only goes to 28lbs. So I weighed the parts I cut off, at 6 lbs right now with more to go.
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post #10 of 21 (permalink) Old 02-23-2015, 12:57 PM
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I tried to weigh the frame before but the only thing I had to weigh it was a fish scale and that only goes to 28lbs. So I weighed the parts I cut off, at 6 lbs right now with more to go.
Be sure to save and weigh all the little sparks from the grinder, LOL. I found a flap wheel works best for grinding steel and aluminum.
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