High rpm crank?

[jasone]

RDM is closing and was wondering if there's any other way a decent crank can be easily obtained?
A 45mm stroke preferably. Iv found the stock cranks dont really like going over 11800rpm for very long

 

[GW's Motorized]

Have you balanced the stock crank?

 

[jasone]

Balanced and trued.
It seems like at 12000 the mains don't get lubed/cooled enough but that's just my theory, no scientific data

 

[GW's Motorized]

Well I'm not huge into building high rpm engines (mostly because my wallet can't support it ) so I can't really help you

 

[jasone]

Apart from the decent cylinder and piston and bearings. Not that much in it

 

[jasone]

Made the case reed and spacer etc

 

[GW's Motorized]

Apart from the decent cylinder and piston and bearings. Not that much in it

Is that a minarelli?

 

[jasone]

Yeah, thought I'd see what there like

 

[GW's Motorized]

I've thought about building one, but I simply can't afford to build it, or have my bike down for long enough

 

[jasone]

The cylinder is indestructible.
Iv gone through 2 sets of mains and the cylinder is unharmed.
Few bits of cage came up and sandblasted the top of piston.
It spat them out and kept running!