rescue50
XS400 Enthusiast
Hi guys,
What would a happy rpm for cruising be for the sohc 400cc?
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What would a happy rpm for cruising be for the sohc 400cc?
Posted via Mobile
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happy rpm?
- Thread starter rescue50
- Start date
n0uy
XS400 Member
My 81 runs at 5,000 rpm going 55 mph. That appears to be right in the middle of the power band and has decent torque for acceleration and passing. I did not change any of the sprockets so it is just how I got it.
55 to 65 mph is about where she is happy. I have done some long trips where I was forced to do closer to 75 mph for long periods of time and it was not fun. The bike handled it fine, but the vibrations are significant.
I run 60mph most of the time. All the bikes turn 4800 rpm at this speed. The bikes with 18-1.85 rims and 110/90 tires have 16-37 sprockets. The 82 has a 2.15-16 rim and 120/90 tire and 17-37 sprocket.
Mostly stock bike, 17t front sprocket, 70rpm, 75 mph.
