gearing? sprockets - Page 6 - BMW G310 R/GS Forum
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post #51 of 62 (permalink) Old 07-18-2019, 08:53 PM
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17T Trial run

Just fitted 17T FS today, went for about a 12 mile run. Acceleration doesnt seem unduly affected by it (if at all).
Speed at 6000 RPM in top gear is now 63 mph (Im sure you can convert it to kph!)
It may not seem a lot but the object of this excercise was to lower the rpm to stop it feeling so manic. As it is now the bikes runs at 60 mph below the 6000rpm where the vibes usually set in.
It was never about making it go faster (ie higher top speed). I found during the short trial run that it felt more comfortable to ride.
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post #52 of 62 (permalink) Old 07-20-2019, 08:32 AM
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Good you got the sprocket , I found the same results about-ish 5mph gain per 1000 rpm and acceleration still feels fine , also not in such a rush to go up through the gears.
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post #53 of 62 (permalink) Old 07-22-2019, 09:47 AM
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Front sprocket bolt hex size?

Hi there.

I will be replacing the front sprocket on my 310 R for a 15T ditto, have you got the hex size of the retainer bolt?
Have to travel with needed tools and need to limit weight and bulk .

P.J.
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post #54 of 62 (permalink) Old 07-22-2019, 11:58 AM
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15 tooth or 17 tooth ?


Anyway either....


You will need to remove sprocket cover .
Undo sprocket bolt.
Slacken chain / loosen rear spindle.


Loctite for sprocket bolt refitting.
Adjust chain. tighten , spindle. replace cover.
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post #55 of 62 (permalink) Old 07-23-2019, 02:01 AM
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Quote:
Originally Posted by Britmech View Post
15 tooth or 17 tooth ?


Anyway either....


You will need to remove sprocket cover .
Undo sprocket bolt.
Slacken chain / loosen rear spindle.


Loctite for sprocket bolt refitting.
Adjust chain. tighten , spindle. replace cover.
No problem there, simply was inquiring the hex size of the bolt fastening the sprocket.

P.J.
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post #56 of 62 (permalink) Old 07-23-2019, 02:29 AM
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Can not remember if it was 12 or 13mm socket.
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post #57 of 62 (permalink) Old 07-29-2019, 08:43 PM
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Typo in part number?
Found BMW 17 tooth front sprocket, on order ex Germany.
Part number is
BM33828396375

Red G310GS
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post #58 of 62 (permalink) Old 07-30-2019, 07:13 AM
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Originally Posted by Norwester View Post
Typo in part number?
Found BMW 17 tooth front sprocket, on order ex Germany.
Part number is
BM33828396375
where?
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post #59 of 62 (permalink) Old 07-30-2019, 03:06 PM
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Typo on my posting for 17t sproc
Well spotted


should be
33828396375
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post #60 of 62 (permalink) Old 07-31-2019, 12:35 PM
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Thanks BritMech for the info in the first place. I love my 310GS for everything except open road multi day touring which feels like I’m thrashing him. Fingers crossed the upgearing will fix this and make him my ‘forever’ bike.

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