Dissassembling sanyo 36V rear wheel motor on giant

[damybike]

Hello all,

I'am facing some troubles on my giant aspiro hybrid. There are some bad noises coming from the sanyo brushless motor (called giant syncdrive) which maybe due to the amount of kilometers riden (~10 000km since 2012)

I would like to open this motor but I cannot see how to dissassemble it properly. There are no screw or something like that to open. It seems to be only one "part". :|
Could you please give me some tips to open it?
Thanks for your kind help.

 

[Hillhater]

Unless you find/are told otherwise, it looks like you may have to unlace it from the rim and then pull the 2 halves apart in the same way A2B assemble their motors.
Look for a join around the centre of the hub
This thread about the A2B has some videos about how to dismantle ...
https://endless-sphere.com/forums/viewtopic.php?f=2&t=30050

 

[999zip999]

I'm guessing that's nut on the wire side ? Just a wild guess.

 

[damybike]

good link but even with an extractor tool, it is not possible to catch any half part to remove/open.
I don't see any nut on the wire side, there is only a flat spot on the axle

 

[amberwolf]

good link but even with an extractor tool, it is not possible to catch any half part to remove/open.

Even after unlacing it from the wheel? (required to open some brands of motors, as the spokes and rim help to hold the motor together)

 

[damybike]

I don't get how to unlace. Do you mean I have to remove some spokes on the rim?

 

[amberwolf]

Yes. At the least, all the spokes on one side would have to come off, if your motor is like the ones others linked.

Note that I do not know if yours requires this, but other posters in your thread have guessed that it might, and I am just pointing out to you what you might have missed in those posts.

You'll need to either research it more, or try the experiment as other posters linked/described, to find out for sure.



Most motors have screw-on side covers, either with bolts or threaded covers like a cap, but if yours doesn't have either, then the above is likely the construction method used.

 

[damybike]

Frankly speaking, removing and re installing the spokes is a big Science for me. I am not sure to succeed :wink: These kind of giant/sanyo motors are really complex and sound like only one shot part on the bike.