950 Supermoto Turbo Build Thread

Discussion in 'Some Assembly Required' started by Tommy_J, Feb 2, 2011.

  1. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    So the word from Peterson racing is that they used heavy duty springs from Hinson on the 950. They began to snap chains during the hill climb so they went back to stock springs for a little slippage and saved the chain. Sounds like these Hinson springs would hold back the turbo just fine!!
  2. 900rider

    900rider Been here awhile

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    got to love a motor that can snap chains :D

    and yeah, I know there's a ton of shock load on it as well but still. . .
  3. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    Just talked to Hinson and they have no record of making special springs. I'll get in touch with Peterson's directly and see what they did.
    In the mean time, all 950 and 990 motors used the same spring. The 1190 on the other hand has a "pink" and "red" for standard or "R" type.

    1190R
    69132005000 CLUTCH SPRING D2,7/35MM PINK

    1190
    61232005000 CLUTCH SPRING D2,7/35MM RED

    950/990
    60032005000 CLUTCH SPRING LC8 2003

    edit to add: check your PM Tommy_J, I sent you some extra clutch info.

    Team Peterson Racing is using Barnett plates and stock springs in their Hillclimbers and getting a full season of use out of them!
  4. Tommy_J

    Tommy_J won't drive a car

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    Thanks Snow. That climber is sick. It sounding like he only really got on it coming out of the hole and then just torqued up the hill. I'm sorry I missed that. I live only two miles from Glen Helen.

    I'm going to try shimming the springs to get just a tiny bit more pressure and de-glaze the plates while I'm in there. If that doesn't do the trick I'll try Barnett plates with stock springs, as your PM suggested. Thanks again.

    .
  5. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    I hope you can resolve your slippage perception. The tech from Peterson's was pretty interesting, right? I was surprised to hear stock springs and HD plates were lasting a full year of racing.

    Don't know if you guys noticed, but they don't run a radiator!!
    The motor certainly sounded like it wasn't spinning up during the climb. At that low of RPM, do you think 125-150HP to the tire, and what kind of torque? I don't know how the 50/50 nitro blend works with the injection system, but the bike was effortlessly digging its way anywhere Bret wanted to go. Even when he looked crossed up and getting sideways, he motored right out, flinging a truck load of dirt as he went. Traction blow out/forward momentum is probably their biggest problem.
  6. Tommy_J

    Tommy_J won't drive a car

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    With Nitro those numbers wouldn't be too surprising. That stuff makes excellent cylinder pressures. Its a testament to KTM that they can run stock pistons. That's reassuring for the turbo project!

    .
  7. Tommy_J

    Tommy_J won't drive a car

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    I mentioned this bike went on a diet, in addition to the Li battery. Eliminating the left muffler exposed the rear fender, which is fairly ugly since it was made to be hidden by the exhaust. I decided to fix this with a fenderectomy. This is fine for SoCal but would be less appealing in wetter climates.

    [​IMG]

    Here the fender is removed and the aluminum foil insulation is partially pulled off.

    [​IMG]

    The weight was cut in half by cutting the fender in half

    [​IMG]

    Conveniently, there are holes in the subframe gussets which can be used to support the rear part of the fender. These holes were countersunk to fit some Ti fasteners I had. Rubber grommets of appropriate length were cut from rubber hose. It bolted right back in and the lithium battery was installed.

    [​IMG]
  8. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    Nice fender trim. I would do the same to clear the ugly sides but use all the space in my trunk, for junk. You could fold a close out plate with some tabs and rivet it on. A little silicone around the edge and you'd be back to rain/puddle/dirt resistant. If you offroad that baby much, it might be a good idea, just to keep the space from filling with dirt and rocks.:1drink
  9. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    Bump TTT

    I fiddled with the FCR's the other day, swapped to my carbon can and wondered if you had gotten any new action developing your turbo.
    I can get the tank off, change needle clip and put it back together in less than a 1/2hr (barring additional hunt time for any dropped parts). :clap
    How is the new plenum for on and off time?
  10. y2blade

    y2blade Long timer

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    just catching-up with this thread

    fantastic project :evil

    following with interest
  11. pennswoodsed

    pennswoodsed lizards,bugs and me

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    My kind of crazy, is map from actual turbo or the kkk original ?
    Thanks,Ed
  12. katumo_jtb

    katumo_jtb bogus journeyer

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    Wow, that thing is so cool and even more amazing, it runs!

    Two questions about the intake plenum, if you don't mind. Let me preface by saying I have never worked with turbos, so I'm looking at this as a relative outsider:

    1. I would have thought building the carbs inside the plenum would get rid of several problems. You wouldn't need a separate boost line for the vents, nor worry about the carb internals holding up to the extra pressure differential. Also sealing the plenum to the head rather than carb boots might be easier, and carb jets/needle would be more accessible. Why did you decide to keep them separate? Was it just to simplify the shape or is there something I'm missing about how blow-through works?

    2. Where did you get the aluminum mesh plate for the air filter housing? It's exactly what I need for an intake project, but I haven't been able to find it.

    Again, kudos on this project. The design is brilliant and the execution is inspiring. Many have said this already but if I were you I wouldn't tire of hearing it :D

    John
  13. Michael Back

    Michael Back Adventurer

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    Hello !

    Thanks for the great info. I recently joined the Orange club and have purchased a KTM SM950. I´m very curious what windscreen is fitted on FangFactor´s bike ??

    Thanks for your assistance in advance.

    All the best.

    Michael Back, Denmark


    Attached Files:

  14. Chillis

    Chillis Land Barge Pilot

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    Looks like something by Screens For Bikes from OZ.
  15. rattis

    rattis Long timer

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    Whatever happened to the turbo bike?
  16. GI_JO_NATHAN

    GI_JO_NATHAN Long timer

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    Almost forgot about this.
  17. Tommy_J

    Tommy_J won't drive a car

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    I really should do some follow ups. Sorry for letting the thread go quiet for so long.

    The bike is running great. It hasn't blown up or given me any grief. I've done a bunch more minor refinements to it which I'll try to write up.
  18. soupknotzee

    soupknotzee Been here awhile

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    :thumb

  19. GI_JO_NATHAN

    GI_JO_NATHAN Long timer

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    Nice!
    Really happy to hear that.
  20. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

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    I would love to see how you have refined your concept!:deal

    Tell us more :freakytell us more!!!