Which crankshaft is better? By jjoshua20213 (Read 561 times)

[jjoshua20213]

Below are the links to two crankshafts, Naraku and Top Racing. Which is better? Do you know of a better one than the two?





www.scooterdynasty.com/crankshafttopracingfor50cc4-stroke139qmbscooters.aspx



www.scooterdynasty.com/crankshaftnarakuracingfor50cc4-stroke139qmbscooters.aspx


I'm looking the strongest crank to withstand high compression & high rpm.

[czmdiver]

Sept 2, 2015 16:06:03 GMT -6 jjoshua20213 said:

Below are the links to two crankshafts, Naraku and Top Racing. Which is better? Do you know of a better one than the two?





www.scooterdynasty.com/crankshafttopracingfor50cc4-stroke139qmbscooters.aspx



www.scooterdynasty.com/crankshaftnarakuracingfor50cc4-stroke139qmbscooters.aspx


I'm looking the strongest crank to withstand high compression & high rpm.

crankworks.com/index.php/crank-services
How much Compression?  How Much RPM?
I  put a linkie to I can first hand personally recommend if ya want to do it correctly and spin the rotation assay. true and weld crank and all the snake oil stuff
I have a NCY +2.2mm Storker crank in the box, I checked for true and she's less than .001, not bad for aout of tha box.

I don't see anything wrong with the crank's you have the link to. I read the marketing hupla like everyone else

[cyborg]

One made in Portugal one made in Taiwan ,,,save $50 with the Taiwanese job,,,,

[rapidjim]

www.scrappydogscooters.com/139QMB_50cc_Performance.html This is the crank I used in my 52mm stroker and quite happy with it.