Shortening Shocks

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peteybug
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Shortening Shocks

#1

Post by peteybug »

I had some spare time on my hands (laid off for a few weeks) So played with shocks. First I have to thank Whiskerfish for the shocks. Without him I couldn't have done this. Tools you need are coilspring clamp. Got mine at harborfreight for 11.00 on sale. Hammer, wrenches,visegrips, hacksaw, metric die that match's thread and cutting oil.

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Take shocks and put spring compressor in spring. One will fit in saddle, screw a bolt into threaded part of saddle.

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You will only need to compress spring enough to get a wrench on the nut on the shaft. When nut is exposed put your wrench on it.( mine was 17 mm) Now put a round object in hole. Smack it with a hammer to break it loose. (ratchet I used was a junk one).

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When you get it apart (release spring clamps) take visegrips with a piece of rubber so as not to mar shaft. Brake nut loose and remove.

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Now fasten shock to bench with shaft hanging over edge so it will not move.

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Measure the threads mine were 3/4 in. Add an inch that would be 1-3/4 in and mark on shaft.

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Now take your metric die and cutting oil and rethread shaft to mark.

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Now take hacksaw and cut off 1in. of threads. I used a sawall ( I'm lazy)

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Now reassemble in reverse order. Shocks will be 1in. shorter. Just a note Not all shocks have same thread. Allso some shocks do not have threads at all they are pressed in. So if you try this make sure you have shocks with threaded shaft. My threads were 12-1.25 mm. Like I stated some are different sizes.

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Again my thanks to Whiskerfish for shocks. Shocks cleaned up nice Steve.
love new ideas for old wing's. AS I have three and am always working on them

[img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle040-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle037-1-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/3%20wings/Townworkandbikes036-1.jpg[/img]
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anarki
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#2

Post by anarki »

Awesome write up!!! Now I just have to decide if I'm going to keep the air shocks that were on her or find something else!!!
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Whiskerfish
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#3

Post by Whiskerfish »

Excellent Write up!! Gald I counld contribute!
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
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and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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CYBORG
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#4

Post by CYBORG »

interesting concept. how does that effect the travel of the shock? any chance of it bottoming out? have you also shortened the spring by 1 inch? and have you thought about leaving the spring the same length and compressing it more?
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Roady
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#5

Post by Roady »

Great idea, Peteybug.

Good writeup with excellent pics.
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peteybug
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#6

Post by peteybug »

Cyborg I left the spring the length it was. As for bottoming out I don't see a prob. As this is for my bobber. Its a solo bike and due to my (awsome) body structure should work fine for me. I'm 5-10 160lbs. take a 30 waist pants. I could prob just use a spring biggrin . I don't think I would use it on a 2 person bike but will try it this spring and see. Right now we have 12ft. snow banks so trying now is out of the question.
love new ideas for old wing's. AS I have three and am always working on them

[img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle040-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle037-1-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/3%20wings/Townworkandbikes036-1.jpg[/img]
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CYBORG
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#7

Post by CYBORG »

sounds like it should work for you. by compressing the spring more the damping wil be stiffer and the rebound won't be that important. be sure and let us know how it works. sounds like a good fix to a common problem
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1985 gl1200
bum
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Great write up...............

#8

Post by bum »

I have some spare shocks that I would like to try that on..............I had success compressing the springs with some giant worm clamps(?), you know like hose clamps, if stretched out they are probably 18" long.
I used two, they were easy to snake between the coils.('8)')
bum
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peteybug
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#9

Post by peteybug »

Just make sure you have right die some are 12mm found some with 10mm and one realy weird one with 11mm and thats is a weird one.
love new ideas for old wing's. AS I have three and am always working on them

[img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle040-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle037-1-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/3%20wings/Townworkandbikes036-1.jpg[/img]
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#10

Post by WingerDave »

Fantastic........ and you'd never have been able to do such a good job without the Rapid Tap. That stuff rocks !!! :-D

Dave
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'80-'81 GL 1100 Hybrid Vetter Interstate 90K km
1989 GL1500 58K mls

Previous bikes

1973 Suzuki GT 500
1975 BMW R60/6
1982 Suzuki GS 550
1980 GL1100 (frame went to current bike, rest parted out)
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#11

Post by Jason J »

Do you think going two inches would be too much?
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peteybug
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#12

Post by peteybug »

Won't leave much room for travel. Mine are working great with just a little over an inch shorter.
love new ideas for old wing's. AS I have three and am always working on them

[img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle040-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle037-1-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/3%20wings/Townworkandbikes036-1.jpg[/img]
bum
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short shocks

#13

Post by bum »

Peteybug,
I shortened my shocks just like your post, works great, makes it much easier to control my bike when stopped.....thanks 8)
bum
8 wings + 1 Triumph +2 Musclecars = 1 pissed off wife !!!
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#14

Post by peteybug »

Your welcome glad I could help save you some cash. ;)
love new ideas for old wing's. AS I have three and am always working on them

[img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle040-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/motorcycle037-1-1.jpg[/img][img]http://i253.photobucket.com/albums/hh55/peteybug8/3%20wings/Townworkandbikes036-1.jpg[/img]
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#15

Post by 78AZWing »

Will this help us riders with the short leg/balance on tippy-toes problem? :?:
For that run-down feeling -
Try Jaywalking!

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