Hub motor replacement

[ElevenAD]

Crunchy,slipping 750 hub- should I have the old one torn down and then have the new one laced in -or- since it’s exactly the same/should I open the case pull the failed guts out,and reload with the new guts?
-it’s 1.5 years old and failed at 5K+ Bummer - what’s the best plan to get rolling ASAP ? Cheers!

running a cheap $200 hub motor over 5000 miles is not bad, plenty of motors that cost triple that require service with even less miles!

 

[harryS]

For ASAP, buy whatever motor is in stock from a US seller. CHina will take at least two-three weeks from a topbike or greenbike, Bigger motor might need a bigger battery/controller to benefit, but if it is similar price, can't hurt to get it and upgrade the latter later,

I'm quite happy with my G60 fat tire motor purchased in 2015, except I believe salt destroyed the internal speed sensor. I didn't want to open it. Using an external sensor, except it picks up noise,

 

[Scarlet/Fire]

You should know it's pretty unusual for the clutches to fail. Are you jumping the bike or anything that might stress something like that? Just curious... -Al

No jumping- I really haven’t tortured the bike in any way,it may have been making some racket that was masked by the maxxis high roller noise that was just recently eliminated with the switch to shwalbe moto x tires -

 

[Scarlet/Fire]

I have found the hard way that marking things such as left & right, in & out.. with colors of paint pen ink and or nail polish while taking a few photos helps. It sucks when you assemble with something the wrong way around. Good luck. Also having some high-temp grease and thread lock will help the job last.
When things heat up they need to get repacked with grease. Interestingly repacking is part of biking history. The most famous mountain biking race is called Repack for this reason. It is in my neighborhood:

. Fun stuff!

Thanks- that’s excellent advice, is there a brand of hi temp grease you can recommend? The lock tite is also a winner,I believe I need a specific security torx bit also- Need to get this fixed soon! Because it’s my only bike I rode today without any power- sure am glad I switched to the moto x tires- it was wayyyy more rideable without the aggressive treads

 

[PedalUma]

Thanks- that’s excellent advice, is there a brand of hi temp grease you can recommend? The lock tite is also a winner,I believe I need a specific security torx bit also- Need to get this fixed soon! Because it’s my only bike I rode today without any power- sure am glad I switched to the moto x tires- it was wayyyy more rideable without the aggressive treads

Just go to the local auto parts store and talk to them. You will see a number of high-temp grease products and types of thread lock. The technical details matter but not as much as just repacking it with something that is good enough. Super Moto-X tires are sweet to ride on broken pavement.