Shocks and forks

General discussion about Street two-stroke Suzuki motorcycles.

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CowboyX
On the street
Posts: 25
Joined: Thu Nov 22, 2012 3:15 pm
Country: Canada
Suzuki 2-Strokes: Suzuki 380

Shocks and forks

Post by CowboyX »

Hey guys I was thinking about improving the handling of my 380 project. Any suggestions for shocks? How about firming the front end up too. New springs and fluid is the easy answer. Anyone out there ever swapped forks from something newer?
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RING_DING
To the on ramp
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Suzuki 2-Strokes: 1974 GT750 B-4 (JDM), 1975 GT750M
Location: North Carolina

Re: Shocks and forks

Post by RING_DING »

I'd recommend talking to Dave Quinn about shocks:
http://www.davequinnmotorcycles.com/" onclick="window.open(this.href);return false;
1973 Suzuki GT750K with Sidecar - Bonneville 2020
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jabcb
Moto GP
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Suzuki 2-Strokes: 69 T350 thru 75 GT750
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Re: Shocks and forks

Post by jabcb »

Back in 1974 Cycle World magazine had a good article on upgrading the forks:
http://www.ozebook.com/compendium/suzi/mags/forks.htm
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CowboyX
On the street
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Joined: Thu Nov 22, 2012 3:15 pm
Country: Canada
Suzuki 2-Strokes: Suzuki 380

Re: Shocks and forks

Post by CowboyX »

Great articles! Has anybody tried those alterations? What were the results like?
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pearljam724
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Suzuki 2-Strokes: 75- GT 550 / 76- GT 750
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Re: Shocks and forks

Post by pearljam724 »

20/50 motor oil stiffens the rebound and compression nicely if you like to ride at moderate speeds. Using a 3/4 to 1 inch stack of quarters used as spacers under the spring caps works great for preloading the springs. Or better yet buy an aftermarket set of springs suitable to your specific weight.
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yeadon_m
Road race school
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Suzuki 2-Strokes: GT380B, GT550B, GT750A, GSX1400

Re: Shocks and forks

Post by yeadon_m »

Pearljam is spot on when he mentions one's own weight. It took me quite a while to appreciate that, as a 'racing snake' of a guy, I need much lighter weight fork oil, else the front end feels almost solid. I moved from 15W to 7.5W and the transformation is a real pleasure. Otherwise stock parts and volumes.
Mike
pearljam724
AMA Superbike
Posts: 1681
Joined: Tue Jul 24, 2012 11:45 pm
Country: U.S.
Suzuki 2-Strokes: 75- GT 550 / 76- GT 750
Location: SW PA

Re: Shocks and forks

Post by pearljam724 »

yeadon_m wrote:Pearljam is spot on when he mentions one's own weight. It took me quite a while to appreciate that, as a 'racing snake' of a guy, I need much lighter weight fork oil, else the front end feels almost solid. I moved from 15W to 7.5W and the transformation is a real pleasure. Otherwise stock parts and volumes.
Mike
Exactly, modifying stock forks or springs works. But, you have to know how to modify them according to your own weight. Depending on your specific weight, how and where you ride most often. Finding the correct suspension sag for those conditions is what every rider needs to learn how to pinpoint. Those areas of adjustments are different for mostly everyone. What works for me, may not work for someone else. Because of another persons weight and riding habits. It's very satisfying for a rider to learn how to properly make suspension adjustments and matching those adjustments with his own riding habits. Weight, posture, braking and throttle imputs, speeds and terrain.
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