Chain drop fix?

[jstephens62]

After riding my new Bulls ebike for about 50 miles, I had my first episode of chain drop. Not fun, and harder to fix on an ebike. What do other do to fix this issue? I see that there are devices for sale in $25-45 range to prevent this problem, should I just get one of these?

 

[FlatSix911]

After riding my new Bulls ebike for about 50 miles, I had my first episode of chain drop. Not fun, and harder to fix on an bike.
What do other do to fix this issue? I see that there are devices for sale in $25-45 range to prevent this problem, should I just get one of these?

Welcome to EBR. This is an easy fix... take a look at the chain-catchers and select one that will fit the downtube on your bike.

Amazon.com : bike chain drop catcher

 

[E-Wheels]

After riding my new Bulls ebike for about 50 miles, I had my first episode of chain drop. Not fun, and harder to fix on an ebike. What do other do to fix this issue? I see that there are devices for sale in $25-45 range to prevent this problem, should I just get one of these?

Try a narrow wide chainring

Narrow Wide Chainrings Guide (Everything You Need to Know!)

The term "narrow-wide" chainring describes the shape and profile of the individual teeth driving the chain. In this article, we are going to throw down some Bike Knowledge and break down what these narrow wide chainrings are all about! Read more to learn all about the chainrings that changed...

www.worldwidecyclery.com

 

[fooferdoggie]

What bulls do you have? my bulls crossover would loose the chain and with the chain guard it was a bitch to get it back on. I gook the guard off and put a chain chainring caught and smaller chain ring it has not come off sense.

 

[jstephens62]

What bulls do you have? my bulls crossover would loose the chain and with the chain guard it was a bitch to get it back on. I gook the guard off and put a chain chainring caught and smaller chain ring it has not come off sense.

I have the Bulls Cross Lite Evo with the Bosch Performance motor

 

[jstephens62]

Try a narrow wide chainring

Narrow Wide Chainrings Guide (Everything You Need to Know!)

The term "narrow-wide" chainring describes the shape and profile of the individual teeth driving the chain. In this article, we are going to throw down some Bike Knowledge and break down what these narrow wide chainrings are all about! Read more to learn all about the chainrings that changed...

www.worldwidecyclery.com

Interesting, I had no idea these existed. As the bike is new, I will see if I buy the chainring they will install for free.

 

[rich c]

Interesting, I had no idea these existed. As the bike is new, I will see if I buy the chainring they will install for free.

I thought Bosch already used a narrow wide chainring. My Ruffian does. I'll check my Haibikes.

 

[FlatSix911]

I thought Bosch already used a narrow wide chainring. My Ruffian does. I'll check my Haibikes.

My BH bikes also have the narrow-wide chainring with the Yamaha PW-X drive system.

 

[fooferdoggie]

ya I have the same chain guard it sucks. but you need a cranks arm remover tool to get it off. then another tool to get the chainring nut off. then a chain ring gaurd. not sure what size chainring it has but if you don't use the last rear cogs it may be good to get a smaller one. if you want a list of what you need let me know. I think the chain guard was about 40 and each tool around 25.00 each.

 

[fooferdoggie]

you need this guy to get the guard off

Park Tool CCP-22C Crank Arm Puller for Square Taper Cranksets Steel Blue | eBay

Find many great new & used options and get the best deals for Park Tool CCP-22C Crank Arm Puller for Square Taper Cranksets Steel Blue at the best online prices at eBay! Free shipping for many products!

www.ebay.com

the guard not sure if this is the right one for you miranda-protective-chain-with-o-ring-for-bosch-drive-electric-bike-accessory-black-one-size

IceToolz Bosch Lockring Tool

IceToolz Bosch Lockring Tool :: From $18.47 :: IceToolz Chainring Tools

www.universalcycles.com

Miranda E-Chainguard Nut Bash Guard for Bosch

 

[William - Bosch Team]

I thought Bosch already used a narrow wide chainring. My Ruffian does. I'll check my Haibikes.

Hello!

Bosch offers only single-profile chainrings currently. Many of our OEM partners elect to use narrow-wide chainrings that they source, or manufacture on their own (though Bosch provides engineering specifications and design guidance, the OEM decides what to put on each of their eBike models.) Haibike uses some really cool machined narrow-wide rings with integrated "mini" bash guard or "guide ring." Not sure where they get them, but the one on my demo Haibike is quite impressive!


For issues involving chain retention, a clutch-equipped rear derailleur is critical (as is proper adjustment by a qualified tech). I won't ride without a clutch der, eBike or otherwise.