Crank issues with Merida OneSixty900

[Simon]

G’day all I absolutely love my Merida ! However I’m having serious crank problems! I’ve recently had a warranty replacement motor from shimano fitted by my bike mechanic. & ever since it’s been throwing crank arms ! All the warranty cranks have been the ones shimano recomend for there ebikes ! ( or that come on it ) every time they are tourqed to specifications! The last set stayed on for 3 whole days ! Luckily it hasn’t come of on any of our knarly descents around where I live as I would have seriously injured myself! It’s becoming very annoying & I can’t ride the bike as I want as I thinking when is it going to happen again ! Any help on this topic would be awesome . ? cheers simmo

 

[Cinnamon]

Change longer bolts and your problem is solved.

 

[Simon]

Change longer bolts and your problem is solved.

What you mean bolt right the way through ?

 

[Cinnamon]

I Replaced original crank arm bolts with 3,5 cm bolts. It works, no issues since then.

 

[Simon]

I Replaced original crank arm bolts with 3,5 cm bolts. It works, no issues since then.

Cheers mate ? I’ll get onto it !

 

[craig landau]

maybe a bit of lock tight on the bolts