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Old 02-03-2014, 04:03 PM   #1
jian var OP
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How to lengthen swing arm on a R100GS paralever?

Hi all,
I am trying to figure out if it is possible to lengthen the swingarm of an R100GS or increase the rear suspention travel without changing dangerously the angle between the gearbox and swingarm.
Thanx!
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Old 02-03-2014, 04:16 PM   #2
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Hi all,
I am trying to figure out if it is possible to lengthen the swingarm of an R100GS or increase the rear suspention travel without changing dangerously the angle between the gearbox and swingarm.
Thanx!
Hmm.. What I have seen is people putting a monolever or a r1100gs swingarm on the GS... I have not seen the paralever lengthened.

If you want a double pivot on a GS the sweet solution looks to be the r1100 setup. Swt in Germany seems to have standardize on this for the pictures I have seen...

Myself I am working a g/s and keeping the stock geometry with KTM forks and improved rear shock.... Just want better handling, a light 800cc mild off road explorer. If I want aggressive I will ride the husaberg:) My plan is finally coming together with lots of update parts coming in over the next couple of weeks. Looking forward to documenting my progress as it happens.

Btw .... Your tank rocks! A bit too much for me but damn it looks cool.
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Old 02-03-2014, 04:20 PM   #3
jian var OP
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Thanx GrahamM,
I have seen SWT's solution and also the monolever solution
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Old 02-03-2014, 04:22 PM   #4
jian var OP
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But i was wondering if by installing a longer rear shock i could increase travel by 1-1,5 cm. Actually i do not something extreme.
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Old 02-03-2014, 04:23 PM   #5
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Ladies!!!
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Old 02-03-2014, 04:40 PM   #6
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Ladies!!!
Holy!!! Gorgeousness!!!!
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Old 02-03-2014, 04:47 PM   #7
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Yes, you can get a little bit of extra height with a shortened paralever link strut. Matt Beekers at Boxer Toko would the the guy to talk to, or inmate Redboots, who has done this to his bike.
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Old 02-03-2014, 04:51 PM   #8
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Thank you! This is what i think i need.
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Old 02-03-2014, 04:52 PM   #9
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Is there a link to either of them?
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Old 02-03-2014, 05:00 PM   #10
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Yes, you can get a little bit of extra height with a shortened paralever link strut. Matt Beekers at Boxer Toko would the the guy to talk to, or inmate Redboots, who has done this to his bike.
Those shorter paralever torque arms make the bottom spring cup hit the swing arm when the shock is fully compressed!

What The boxertoko did for one bike is weld two GS swing arms together but that might be a bit to extreme.
For most R100GS 's a shock length of 410mm is already to long for the drive shafts u-joints.
You could use an 18" rear wheel to get a bit more height and improve the off road handling.
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Old 02-03-2014, 06:02 PM   #11
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it's my understanding more extreme angles on the shaft are more likely to cause u-joint failures....
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Old 02-03-2014, 10:45 PM   #12
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That's the main issue , especially in off road use.
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Old 02-03-2014, 10:48 PM   #13
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18'' rear wheel!!!! Good idea!!! From which model? Or should be custom made?
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Old 02-03-2014, 10:55 PM   #14
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Thanx Prutser. Sometimes the most difficult thing is to see the simplest solution!
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Old 02-04-2014, 12:27 AM   #15
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18'' rear wheel!!!! Good idea!!! From which model? Or should be custom made?
You have to find a R100R front rim if you would like to keep it TL.
Or to match the front wheel of the bike get a 40 spokes excel rim to put on the gs hub.
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