im starting to collect the parts to build a fresh bottom end for my Runner 70cc. can anyone suggest a good reasonably priced crank to buy?? ive only got a cast iron kit so it dont have to be a mega revs crank, but im after something stronger than the original!! ive been looking at the B.G.M evolution crank on scooter center...are they any good???
bgm are a good choice really depends what you want though, you could get the malossi/polini items but theyre pretty expensive
yeah i was thinking that!! The B.G.M cranks seem reasonably priced...and ive heard them mentioned a few times on here before
yeh id say go for it, what top end are you going for? can decide what crank and mains u want depending on that, as you could just just c3 mains on a bgm crank if its a sport kit or something a little revier, but a polini evo 2 for example would want a polini/malossi crank with c4s.
the polini evo is only a little more and i use nothing else.. havent used a bgm 50 crank yet but am hoping to use one on an 80 project soon so will report back. evo wil handle the irons power for YEARS tho m8
id go for a stage 6 pro as is simlar to malossi but i would go for a full evo setup like minors ones if i could aford it. i am useing a malossi one ad far as i can see its good crank
ive got a polini cast iron top end...and my std bottom ends getting rattley, and im noticing a bit of vibration on full throttle...so she aint got long for this world :w00t: im hopeing to nurse her until i get all the bits together for a bottom end rebuild!!
if youve never done one of these engines theres a couple real important things to remember so pm me befor you undertake the job an ill let you in on a few secrets
