Original Gearing on Gpz 1100 B2

[Richard L]

Hi
Can anyone tell me what chain length and sprockets they are running on a B2
with original wheels and swing arm. I thought I had everything original (front sprocket 15T rear sprocket 40T ) but the new 630 chain, 98 rivet ( 49 side plates )is nearly at the end of its adjustment so something is not right !





Any help would be appreciated.

Thanks
Richard

[Al]

Richard i dont know the answer but this may be of more use.
If that chain was one link shorter you wouldn't get it on.
There will be a short period of bedding in which will require a few mm's of adjustment which will take it to the limit of travel.
Four years of thrashing, wheeling, sprinting and other un-mentionalbles by myself and others has not managed to put the chain where it needs any more adjustment.
My last (630) chain i had to run baggy for a year before i could take a link out of it. Previous experience told me that replacing the link on a chain as old as that was not going to be practical so i replaced the chain. By then it was about eigth years old.

P.S. I have a two tooth larger sprocket on the back because in my opinion standard gearing is too much work in traffic and besides that who wants to go 135 M.P.H.

You may also find that there is a buzzy bit at the critical 70 M.P.H. and the previous owner changed the gearing on mine for that reason.

Hope this helps in a roundabout way.

AL

[Richard L]

Thanks Zorded,
You are right about a shorter chain I have a 96 rivet one which will absolutely not stretch onto the sprockets. Your comments about the longetivity of a 630 chain are useful , I just wondered what was there in the first place when the adjusters are right back at the beginning of their travel.
It is not a big problem and doesn't stop me riding so never mind.
Thanks
Richard

[z1bman]

this lists rear sprocket as 41 / 42




Price Qty
41068 41068-1087 AXLE,RR,L=300 $57.50
41073 41073-1141-21 WHEEL-ASSY,RR,SOLID,B Not Available
41073A 41073-1141-21 WHEEL-ASSY,RR,SOLID,B Not Available
42033 42033-1024 COUPLING-ASSY $162.53
42033A 42033-1048 COUPLING-ASSY,F.BLACK Not Available
42036 42036-1039 SLEEVE,L=33 $22.35
42041 42041-1058 SPROCKET-HUB,41T $75.48
42041A 42041-1106 SPROCKET-HUB,42T,BLAC Not Available
92001 92001-161 BOLT $2.97
92015 42045-005 NUT 10MM $3.53
92015A 42045-018 NUT CASTLE,18MM $5.81
92022 92022-1212 WASHER,LOCK $2.97
92022A 92022-248 WASHER,PLAIN,20MM $5.23
92027 92027-1286 COLLAR,L=89.5 $17.25
92027A 92027-1287 COLLAR,20X40X18 $15.63
92027B 92027-1288 COLLAR,L=31 $16.83
92033 92033-1043 RING,SNAP,56.2M/M $4.71
92033A 92033-1044 CIRCLIP,62M/M $6.05
92049 92049-1061 SEAL-OIL $9.64
92049A 92050-027 OIL SEAL $11.23
92057 92057-1492 CHAIN,DRIVE,EK630SZDOX98L $436.24
92075 42014-033 SHOCK DAMPER,REAR HUB $52.84
550 550AA4035 PIN-COTTER,4.0X35 $2.97
601 601B6206 BALL BEARING,#6206 Not Available
601A 601B6304ZZ BEARING,BALL,#6304ZZ $17.16
671 671B2565 in.0in. RING,65MM $4.63

[Al]

I have a 39 and a 41 tooth rear sprocket (spares) if youre chain gets too baggy.
Both are original looking pattern and both in good order.

AL

[Richard L]

Thanks for the offer. I think I will do a few more km's and see what happens.
The gearing itself feels o.k. but maybe 1 tooth less on the back would be more relaxing at speed but then I would have to split the new chain.
I'll let you know what I decide. Thanks for taking the time to look.
Richard