vtr 1000f front end swap

[wheels]

Okay gentleman the vtr stem is too short and the stem is welded in . iI can grind off the weld and use a press at work to insert the kat stem .The Katana lower is wider and would need a bushing made for the stem to fit in the vtr upper . I might go the route of bandit 600 upper and kat lower and figure out spacing of brakes .lol or some one mentioned they had an e triple tree off 1100 i believe are those 41mm tubes ? the current l front end single disc is not 41mm. i shall contemplate this .

[wheels]

looking for the guy with e triples

[wheels]

so are the stock gs 1000 78-80 have have 41mm triples ?

[steve murdoch]

Stock 78-80 GS1000 forks are 37mm and stock 81-83 GS1100E forks are 39mm.

[RichDesmond]

Have you considered using the VTR upper triple with riser clip-ons? Or did you want a more upright riding position?

[wheels]

I am thinking about using gs 1100 triple because they are 41mm correct?

[wheels]

Thanks for fork tube info, stem on vtr is too short. so back to bandit upper might be able to use stem out of current triple.LoL this has become a project. But i will know what works and keep track of it . to possible help someone late. I have owned a hawk and very familiar making front work.

[RichDesmond]

I am thinking about using gs 1100 triple because they are 41mm correct?

37mm IIRC, definitely not 41. Looks like the GSK models from 82-84 had 41mm tubes.

http://perosoft.org/yamaha/Motorcycle-fork-tube-sizes.pdf

But of course, the fork spacing has to match up too.

[salty_monk]

This info above from Rich ^^^^^^^^^ is correct

[wheels]

Okay gentleman here is what i have found easiest superhawk fork conversion. 1# is to use 82- 84 gs 1100 gk triples a bolt on . minor spacing on brakes , . # 2 bandit upper 01 bandit 600 upper with 99 -06 750 lower katana this option requires some spacing in stem. area . all the input was greatly apricated . onto next area complete engine tear down lol.

[hhart]

double check the 600 upper 750 kat lower. Put together one for a buddy like that don't remember any spacer just new bearings. Got a bike now with 750 kat stem in 1200 bandit triple just new bearings stem pressed in not a knurl or anything like socks on a rooster.

[wheels]

update on the swap almost finished, what i had to build. Front axle from the hawk axle too short by 21mm . Bought a 1-inch rear Harley axle lol,the machinist is turning down axle to 20mm for hawk front wheel and plenty long will end up being 245mm long.

[wheels]

Okay guys after extensive work here what i ended up with 1200 bandit front end min. machine work .To make triple tree bolt on, then modified for rear bandit 1200 rear swing arm. Will now have 17 ich wheels (good tires obtainable) . also, this is a 1979 gs 1000 L. so in am researching rake and trail of the gs 1000 standard model . I believe someone here mentioned the L has 1 degree more rake so i will use longer rear shocks. the motor is almost finished will post pics soon. any comments are welcome.

[wheels]

Looking for any ideas about longer rear shocks and how much will now start with rake and trail dimensions stock i believe is 28mm rake ? would like to end up at 27 to 26 any thoughts on this ?

[RichDesmond]

Okay guys after extensive work here what i ended up with 1200 bandit front end min. machine work .To make triple tree bolt on, then modified for rear bandit 1200 rear swing arm. Will now have 17 ich wheels (good tires obtainable) . also, this is a 1979 gs 1000 L. so in am researching rake and trail of the gs 1000 standard model . I believe someone here mentioned the L has 1 degree more rake so i will use longer rear shocks. the motor is almost finished will post pics soon. any comments are welcome.

I believe that the "L" has more rake only because the forks are longer. Give that you're now running a 17" front wheel, and likely shorter forks, you probably have less rake than stock, not more.
That said, what matters is trail, not rake. What is the offset difference between your old triples and the new ones?