SOHC.co.uk Forums > CB500/550

Throttle movement amount

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SteveW:
You can get quick action throttles for modern sports bikes, so maybe it’s something like that.

bobv7:
That's the one thing that annoys me most. It was the same when I had my 400/4; too much rotation from closed to open. Needs a throttle tube with a higher cam.

Nurse Julie:

--- Quote from: bobv7 on July 31, 2020, 05:58:36 PM ---That's the one thing that annoys me most. It was the same when I had my 400/4; too much rotation from closed to open. Needs a throttle tube with a higher cam.

--- End quote ---
Agree, 400/4 throttle rotation is the worst ever, I'm sure it's not far of 360° from stop to stop. On my 550/4 it's about 180° max.

K2-K6:
"Agree, 400/4 throttle rotation is the worst ever, I'm sure it's not far of 360°"  ;D ;D ;D

It's possible that something like the 750 F2 has a different twist grip geometry that would fit and make it less travel.

Or some of the early eighties Hondas as they started to use CV type carbs with butterflies.

bobv7:
That's a sound idea so if someone could do a quick measurement of the cam height and length from the handlebar there might be some relief for those suffering from over extended wrist action. Stop giggling at the back! :o

I checked mine and it's 10mm x 24.75mm near as damn it.

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