which size crank
have a GP150 sil and am thinking of going to an imola. gearing is the sx150 type, 16 x 46, what size race crank stroke, length would be the most ideal? What factors dictate the size?
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RinB
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See post below giving variants on stroke & rod length etc
http://scooterotica.org/tempforum/viewt ... p?f=5&t=28
Typical Imola 58mm stroke 107mm Conrod
But 110mm rod with relevent packer to adjust timings can be used if need be
http://scooterotica.org/tempforum/viewt ... p?f=5&t=28
Typical Imola 58mm stroke 107mm Conrod
But 110mm rod with relevent packer to adjust timings can be used if need be
If its made of Metal Fettle it !!
thanks Rinb 
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bristolmod
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Drew
have you taken your medication today?
have you taken your medication today?
Scootering since 1968.
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corrado
- Dealer
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You can also get the Imola kit to suit a 58 x 116 crank, that's what's in mine.
I bought it as a complete engine with the Imola fitted. It ran great until I holed the piston, upon breaking it down I found it had a TV crank and flywheel, so when I rebuilt it I decided to use a new 58 x 116 GP crank with piston to suit.
I bought it as a complete engine with the Imola fitted. It ran great until I holed the piston, upon breaking it down I found it had a TV crank and flywheel, so when I rebuilt it I decided to use a new 58 x 116 GP crank with piston to suit.