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Search results

  1. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Nice to know :) I've now bought it, and will try to do the conversion this winter.
  2. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    I weighed my bike on bathroom scales today in case I decide to order new springs for the fork. It weighs 101kg on the front wheel, and 98kg on the rear. That's without any gas in the tank, and with 10 liters of fuel it will have about the same front rear weight bias as a mid 2000 GSXR. I was...
  3. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    I found an image online of a GS with similar exhaust as I have, box swing arm and the same YSS shocks. I'm leaning towards this being a worthwile upgrade, some time in the future.
  4. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Did some research on the swingarm. The 750 pivot bolt is thinner than the 1100. This means that either the frame will be drilled to accept a thicker bolt, or the old bolt is used with fabricated "top hat" spacers. Because of strict Norwegian regulations regulating modifications to the frame, I...
  5. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    With the risk of something getting lost in translation (I'm from Norway and not fluent in english), I will try to answer. I'm not afraid it will be overwhelmed as in struggling to keep up. I believe that has more to do with how hard the bike is pushed. The main reason for upgrading the...
  6. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Custom side-covers are necessary to get the correct "bone line". I haven't made the cover for the other side yet: I planned on making a smaller cover like this: but I'm leaning towards extending it downwards so it lines up with the bottom of the air filter in stead.
  7. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    So, I rolled the bike out into the sun for the first time in a couple of years. Started it up, and it idles okay at about 1000-1100rpm. Revs okay without lagging too. I've had the carbs apart so I will have to resync eventually. What I was most exited about, was measuring the forks. The...
  8. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Hate it when I have to redo stuff, but that's how it is sometimes.. One of the connections to the gear indicator wasn't good enough and broke off: Had to cut them all off to make sure one of them doesn't hold all the load. I bought some adaptors for the paddock stand. I've used a steel rod...
  9. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Thank you guys :) Today I went over all the nuts and bolts at the front, and torqued them according to specs. The steering stem nuts were a real challenge. They should be torqued to 45 and 80 Nm, and both mye C-spanner just slipped and rounded off the nut. I dont have the original tool, which...
  10. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Mounted the calipers today, and the rotors now seem to line up well with the frictionmaterial on the pads. Here is an overexposed image i took to better see if everyting lines up as it should. The pads will sit a little bit deeper when the retaining spring plates are back on: These are...
  11. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Milled off 6mm on the R1-calipers today. I've been postponing this job for a while, as I was afraid to screw it up. After some testing i found a way to mount the calipers. Two impact sockets of equal hights, a bolt through one of them and a bolt through the center. Doesn't look professionl at...
  12. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    So, after double-crimping a lot of connectors on both the gear indicator and the other indocators, they finally work: Forgot to film the gear-indicator, but here's a link to an old clip:
  13. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    When doing th R1 monoblock-swap, there is a choice between switching from 298 to 310mm rotors, switching to 320mm rotors and using 5mm spacers or milling 6mm from the calipers at the contact point (red markings on image). I don't want bigger rotors, as I think they look out of place on these...
  14. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    The switches are reconfigured: Left is: Lights. Short press - blink high beam, longer press - switch high/low, even longer - turn off. Turn Left. Short press - blink 3x, longer press - blink continously. Stop with short press. Turn Right. Press both 2 and 3 for hazard lights Right is...
  15. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    I soldered the LEDs to a protoboard with 510Ohm resistors in series (as the LEDs are 3V max /20 mAh). The black ground wire is looped here for testing, but the final version has ground wires. One in common for turn signal/high beam, and one to ground the oil light. I bought quality LEDs, but...
  16. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    The new rear lights (and you can see the rear brakes in the background).: They are 3 in 1 lights, with turn signals, low power red rear lights and high power red brake lights. The are extremely bright too. I drilled and tapped the frame and screwed them directly to it.
  17. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Rear brakes: On this side it was neccesary to use the footpeg mounts. I cut and shaped them to fit better, and I also had to remove the tab on the frame, as it interfered.with the mount.
  18. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    First; gearlever: This involved just cutting the original gear lever, turning it 90 degrees upward, drilling and tapping it and using a turnbuckle to make it adjustable. I've pressed in rubber O-rings to stop it from rattling. The rearset location on this side is fine without the footpeg...
  19. LarsKroghStea

    1981 gs750 (gs750e) Retro Racer project

    Guess who's back.. As this b​uildthreads 10th anniversary is coming up this december, it's about time I finish documenting the latest mods. And finishing the bike. This is a list of things to come: Finishing the rearsets - I've driven the bike with the original gearlever and no functioning...
  20. LarsKroghStea

    1981 GSX1100 Katana Based Project

    Thats pretty cool :) Do you think it's possible to mould engine and front sprocket covers the same way? More layers of course, but it would save alot of weight.
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