Changing Front Chainring

[sarasotabill]

I have a Narrak E-Bike with a 40T front chainring. It is causing ghost peddling in when I am in PAS 2 and above and in 7th gear. I want to go to a 48T gear. Does anyone know if it is possible to change the chainring without removing the crank and if so, which chainring do I need to purchase. Any help would be greatly appreciated.

Bill

 

[gromike]

I would just assume you would need to pull the crank, but maybe not. As it's a hub drive it shouldn't be a problem to change the chainring, and neither is removing the crank with the proper tool. You can try to remove the chainring as it sits.
Best to post pictures focused on the area of your concern. (btw: crank pullers aren't expensive.)

 

[Jeremy McCreary]

I have a Narrak E-Bike with a 40T front chainring. It is causing ghost peddling in when I am in PAS 2 and above and in 7th gear. I want to go to a 48T gear. Does anyone know if it is possible to change the chainring without removing the crank and if so, which chainring do I need to purchase. Any help would be greatly appreciated.

Bill

I've changed chainrings on 2 different bikes — one mid-drive, one hub-drive — and didn't have to touch the cranks. But I did have to match the bolt patterns on number of bolts and BCD (bolt circle diameter).

In your case, the clearances involved may limit max chainring size.

How about some photos to help us help you? There's a 2MB limit on file size.