Cam spot

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acotrel

acotrel

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A while back I mentioned the 'cam spot' and some of you guys did not seem to know what I was talking about. If you have a real race cam in your motor and ride your bike holding the throttle in only one position, as the revs rise you will feel a surge of power as the motor comes onto the cam. The exhaust system can do similar as it starts to work properly. The two can reinforce one another. However with Commandos, the cams are usually pretty mild and a 2 into 1 exhaust system gives smooth and steady power from almost zero revs. If you have got a four-stroke race motor with nothing below 5000 RPM and a close ratio box with a high first gear, it is often impossible to get around a relatively slow corner without dropping below the power band and having to slip the clutch. When it comes back on, you have a problem. First gear at 5000 revs on some bikes can be 70 MPH.
 
This is either called getting on the cam in this part of the world, or as the two stroke Brigade call it, hitting the “sweet spot”
 
My bike has quite a weak power band. I’m thinking of buying a stronger one. Does anyone know the part number for a Norton power band?
 
pommie john said:
My bike has quite a weak power band. I’m thinking of buying a stronger one. Does anyone know the part number for a Norton power band?
Click to expand...
I understand you can find those power bands at most home improvement stores, in the same aisle where they keep the expertise. I cd never find it, despite several visits...
 
pommie john said:
My bike has quite a weak power band. I’m thinking of buying a stronger one. Does anyone know the part number for a Norton power band?
Click to expand...

I think Jim Comstock has the part number for that, as does Herb Becker, Kenny C, Jim S, and others...
 
pommie john said:
My bike has quite a weak power band. I’m thinking of buying a stronger one. Does anyone know the part number for a Norton power band?
Click to expand...

Narrow power band 06.$$$$$ wide 06.£££££££

They will be in the same section as Long waits and Tartan paint.
 
Here’s where my power band lives....

Cam spot
Cam spot
Cam spot
 
That Yammy really has two bands in one motor, doesnt it.

My power band comes in a Desmoquattro.
 
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