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Longer swingarm calculation?

  • Thread starter Thread starter CA180
  • Start date Start date
C

CA180

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Anyone know to what degree my bike will be lower in relation to how long the swingarm is? I know that if i extend the shocks out further (kind of like the shock lowering blocks), the bike will go down, but how much?
 
humm. a thinker.

humm. a thinker.

well im no tech but i do alot of custom mods on my gs750E so i will tell you my storie and lets see if it help's you at all. remember im not tech just every day jo. now i see you want your shock's to stay... i have no shock's on my gs's hard tale . oh ya

now i was at home one night about 4 weeks ago. and up to some shop
toking (sorry im a pot head and i dont hide it) well as i was doing so i was siting and looking at my bike i was turning in to a drag bike for so weekend fun
wanting better launching control. so i wanted my swing are longer but to buy one would cost way too much for a play toy . so as i was baked i looked at my welder and band saw.. think humm i may loss a finger and i may just make my own swing arm. well after much toking and worrying i may trash my only swing arm i jumped in to it!! pulled that bad boy off and grabed the measuring tape. i must have measured ever point i could wanting it to be true and right the first time. now skiping the how too part . i made it 6 inch longer so to look cool and keep the front down.
i found after making it longer that i had to build more parts then planed
everthing had to be 6 inch longer but i have to add 12 inch to my chain

so if you planing to make it longer and keep the shock you will need shock's just as long as what you add on to the swing arm.. so 4inch over stock swing arm will = to 4 inch longer shock's. or you can just add 6 inch to your swing arm and move the shock mount up to where u will need it to stay in and at the stock place and deg.

hope this help's a lil if at all.
thanks shawn
 
um.. Not really all that clear about what kind of set up you are aiming at.

if you mean to simply leave the shocks mounted to the frame where they are as when stock, and you are just extending the swing arm back 4 inches... then grab a protractor and tap measure.. and bust out that highschool trig!
 
Don't forget your physics, too. :shock:

If you move the wheel back, but leave the shocks in the stock locations, there will be more leverage for the wheel to compress the springs. This, alone, will lower the bike, unless you put stronger springs on, too.


.
 
Lol... Good story Shawn. Your thread is where I got the idea.

Bentrod... What I'm shooting for is to keep the shocks mounted at the same point. Push the wheel out from under the seat pan. And get the bike over all lower. I understand that the angle will be funky, and probably ride like crap (loss of dampining) but I know kinda what I want.

I'm only really shooting for three inches out over stock. And hopefully drop the bike drastically over all. Up front I will probably push the forks into the clamps for about 2 inches drop plus some room to install clip ons.

Thanks for the help guys....

P.S. I never took trig... Actually, I barely made it through algebra 2! 8-[
 
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