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Do I need a new starter?
Do I need a new starter?
‘75 R60/6
‘75 R90/6
#therippleride
- schrader7032
- Posts: 9040
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
- Has thanked: 2 times
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Re: Do I need a new starter?
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
Re: Do I need a new starter?
The starter sits in the top of the engine, it’s ears bolted firmly to the case. There’s no washers or shims between them, so no make up to be made there. Your observation is still interesting though because perhaps the throwout could be improved. I’ve had issues with it throwing out but not turning before. Usually fixed by shifting into a higher gear and rolling backwards to reset the positioning of the ring gear. I’m obviously hoping to avoid getting into it that deep. I’ll clean this thing out today and post some pictures. Maybe I’ll get lucky. Thanks for your observations!schrader7032 wrote: ↑Sat Mar 06, 2021 6:27 amFrom what little I can tell, it appears as if the starter was not shimmed or seated fully. Or that the pinion gear on the starter was not being extended far enough to fully engage the flywheel teeth, thus the wear and tear on the edges of the flywheel and starter teeth. Seems to me that the starter could be overhauled for sure to see if the extension of the pinion gear can be improved. I haven't been that deep before so not sure how the starter is indexed to the engine case.
‘75 R60/6
‘75 R90/6
#therippleride
- srankin
- Posts: 1079
- Joined: Fri Jul 14, 2017 8:45 pm
- Location: Spencerport, NY USA
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Re: Do I need a new starter?
I would suggest finding a good starter repair shop and having it rebuilt. I don't think it can cause any more damage, and if it still isn't right after the rebuild, then you can address replacement of the starter and sad to say perhaps the flywheel.
All in all, the whole BMW system is pretty robust the pictures show some damage but as I said, maybe not enough to do a full blown flywheel starter replacement.
Good luck, St.
Re: Do I need a new starter?
Pretty cool to see people with the amount of knowledge you guys have responding to my little post. Thanks!srankin wrote: ↑Sat Mar 06, 2021 11:46 amIt kind of looks perhaps like the starter's lube went away over time. I have had that happen on both of my bikes. I noticed it when the starter would take a bit more effort to spin the bike over despite having a good well charged battery.
I would suggest finding a good starter repair shop and having it rebuilt. I don't think it can cause any more damage, and if it still isn't right after the rebuild, then you can address replacement of the starter and sad to say perhaps the flywheel.
All in all, the whole BMW system is pretty robust the pictures show some damage but as I said, maybe not enough to do a full blown flywheel starter replacement.
Good luck, St.
Update: I cleaned the starter out pretty well. Reassembled it with a touch of assembly lube at each end where the motor meets the brass sleeve on the housing. Put power to it and it throws out and spins nicely. I had heard not to grease the inner workings so as to avoid collecting dust so I went with that. Like you said if it doesn’t work out I can throw a new starter on. Kind of fun pulling this thing apart though a bit difficult getting the brushes back around the commutator at the base of it
‘75 R60/6
‘75 R90/6
#therippleride
- srankin
- Posts: 1079
- Joined: Fri Jul 14, 2017 8:45 pm
- Location: Spencerport, NY USA
- Been thanked: 18 times
Re: Do I need a new starter?
- srankin
- Posts: 1079
- Joined: Fri Jul 14, 2017 8:45 pm
- Location: Spencerport, NY USA
- Been thanked: 18 times
Re: Do I need a new starter?
Re: Do I need a new starter?
The stock Bosch unit isn't going to spin as well as the newer Valeo or Euromotoelectrics offerings. And I believe the sprag clutch (at the front gear) is NLA.
At least it was when I wanted to rebuild mine on my R90s. I went with a Valeo. Totally happy and the starter spins like a modern bike.
Re: Do I need a new starter?
I just purchased one for my /2 conversion project, and at least out of the box it looks quality, and they offer a 24 month warranty, which certainly says something.
ECJ