R80ST gets the GS Treatment

Discussion in 'Airheads' started by Airhead Wrangler, Dec 24, 2008.

  1. DiabloADV

    DiabloADV Semi-Occasional

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    What was the first points-ignition bike to lose the headlight circuit board? I'd really like to wire this without that monstrosity.
  2. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    No need to get a harness from a points ignition bike. All the ignition stuff on the electronic ignition bikes is on a separate subharness, if I remember right.
  3. DiabloADV

    DiabloADV Semi-Occasional

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    I have a 1980 R65 main harness (my bike is '74 90/6)...I could adapt that, I guess? My whole front electric routing is modified anyway...nothing stock forward of the tank.
  4. One Less Harley

    One Less Harley OH.THAT'S GONNA HURT

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  5. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Still going... Work is sort of on hold. Waiting out the shitty weather. Also, waiting for a paycheck, but nobody seems to give those out unless you work for them. :cry I've had a few months off and got bored and finally started looking for work about 3 weeks ago. There's not that much left to do. Just need to make a front cover for the alternator / ignition, clean up and waterproof my wiring, and make a luggage rack.
  6. b0mb3r

    b0mb3r Old Git

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    and ????
  7. Garthe

    Garthe ROCKS ARE YOUR FRIENDS...

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    Taking apart the GS...six months till the frame gets shipped...:evil

    Hope all is well Spencer.
  8. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Still kicking. Unfortunately, I just got a job and start on Monday. My life of leisure is coming to an end for now. The upside is that I got rid of my landlord's car which was taking up half my garage and finally got myself setup well in there. Another trip out to Fubar's shop in the next couple of weeks to make a front cover and she'll be ready for travel. Since it's been nice and dry here the last few days I went on a long ride yesterday afternoon without a front cover. The poor girl had been sitting for a couple of weeks without running. Either my winter mix gas goes bad faster or the mikunis clog up a little more quickly than bings. It was a lengthy cold start for some reason. Gotta check on that.

    That's exciting. :clap I'm glad my bike is in rideable condition, but now I'm onto the fine tuning / second-guessing phase trying to get everything right. The 4860 forks continue to be a bitch for stiction. I need to find someone with a KTM wheel and spacers to try them to eliminate that as a possibility. Prutser is tempting me with DRZ forks as well. The rear shock needs to be revalved as the fast compression circuit is way too stiff even when backed all the way out. Slow is just right though. The rear fender needs to be remounted in a better orientation - just doesn't look right as-is. Maybe some taller handlebar risers also. No matter how many items you check off, the list never really gets any shorter. :D
  9. Stagehand

    Stagehand Imperfectionist

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    DRZ! :freaky
  10. Ras Thurlo

    Ras Thurlo Desert Lion

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    :wink:
  11. Ras Thurlo

    Ras Thurlo Desert Lion

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    how much work did you do on your 4860s?

    At some stage you had mentioned the stiction problem before, but I seem to remember on forks that you had not really overhauled
  12. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    I've since given them a complete overhaul. New bushings, seals, wipers, and oil. No discernible difference afterward. The internals were in great shape with no visible wear of any kind. There's definitely some kind of misalignment going on somewhere. I'm guessing the wheel spacers are the culprits. I already replaced the axle and checked it for straightness in v-blocks with dial indicator, I need to check that the axle clamps are nice and smooth inside, then maybe swap in somebody's ktm wheel just to eliminate that possibility also.
  13. GrahamM

    GrahamM Been here awhile

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    Took my g/s with 4860's out to some trails today. Front end was great, looks like the spring rate and valving turned out to be just the trick. In the rough stuff I used all but about .75" of travel... Observed by adding a tie wrap to the fork.

    Front wheel, brake is all KTM and work great, braking is very responsive for the setup. It is the standard setup used on a typical 450, considering I have the bike as light as possible with small tank and only a solo saddle I think the setup is sufficient. Btw, s meyer seat is more comfortable than my Corbin on the GS 300km so far in a day without a butt problem.

    Front tc80... Still getting use to it, a bit of sliding going on in gravel. Also steering is very light, Scott's damper to be installed once a Henderson post arrives, which is now on it's way:)

    Back end is not terrible but not great either with the stock shock... After I finish the 570 conversion of the KTM 530 I will start looking for a new rear shock.

    Good luck figuring out your wp problem... Enjoying mine so far, would be nice to have the full travel but enjoying it so far with stock geometry.
  14. Ras Thurlo

    Ras Thurlo Desert Lion

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    Am interested to hear what issue is, as 4860s should still run sweet once set up right

    Btw are you using a BMW or KTM master cylinder?

    Based on how my EXC front brake feels, I suspect that a KTM master cylinder is the way to go
  15. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    KTM master cylinder, caliper, and line off a 950 super enduro. No regrets there at all. It's all the brake I'll ever need.
  16. hardwaregrrl

    hardwaregrrl ignore list

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    Hey Spencer....wondering if you could post some pics of your seat attachment hardware from HPN. thx!
  17. Prutser

    Prutser Long timer

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    AW's fork will be fine on rough stuff too I guess. Its the "almost" smooth roads with a few small bumps that will be a problem.
    If the fork keeps moving they will feel smooth and are great. But to get the fork moving on a really small bump takes too much force which causes the discomfort.

    I tried my WP48 without the shims on the pistons just to feel if that would solve the problem but it didn't.
    In Mongolia i have been riding trough deserts covered with 15cm big rocks with 80 km/h which felt like a new smooth tarmac highway with the same sticky forks.
    Its not only the wp forks that have the stiction problems but 80% of the modern bikes have those issues.
  18. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Here you go:

    [​IMG]

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    It just so happens that I have an extra pair of the mounts that I plan to put on another saddle (someday), but in the meantime I'd be happy to mail them to you to copy if you want. Not seen here is the backing plate I assume they put on the inside of the seat pan. I assume this due to the two rivets on the outside of the pan on either side of the mounts.
    naginalf likes this.
  19. IronSpadeCycles

    IronSpadeCycles Button Pusher

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    I like those mounts for several cafe racer's I'm building. What a great solution to a custom application. Would you care to take another picture with a tape measure next to it so I can get an idea of the size? I can copy them once I see the dimensions without holding them in my hands. The rubber cushion at the base and the ball and socket link are stock items but the lever is a custom part.

    Thanks for sharing.:clap
  20. bpeckm

    bpeckm Grin!

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    Brilliant!

    Re: size: they look like the standard size that we use for shifters etc. Obviously without using that tiny little wire "safety clip" that keeps the ball from popping inadvertently.

    Used on lots of cars and anything with those gas-assist springs, as well... shouldn't be hard to source something appropriate?

    [​IMG]

    Found this page at McMaster-Carr with lotsa goodies....

    :evil