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'90 Suzuki RGV250 VJ21- Highside update

Discussion in 'My Bike' started by MIZ, Jan 23, 2011.

  1. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Have other pics. Don't have time for a long writeup till I get back from Melbourne at the end of next week. RGV is ready for a shakedown at Wakefield tomorrow though.

    [​IMG]

    [​IMG]

    Hard to see in that second one, but one of the panels is in grey primer. So we have a pink and white tank, red nosecone and LHS, grey RHS, and blue/white/red tail... with the green numberboards. And a dark grey rear wheel.

    The rear wheel is perhaps the actual biggest improvement to the bike: 17" rather than 18" and now wearing supercorsas. Many props to Brett at Moto Garage for the fact he hustled in a set for me on redonkulous freight charges (that he absorbed). I think once freight is taken into account, he lost money. But he's sexy so that's ok. Should be good on new tyres. Also thanks again to [MENTION=1003]Charlie[/MENTION] for the welding on the RHS rearset. It takes all of my weight so should be fine for Stace.

    Improvements made after the crash:
    * New headstem bearings
    * New tyres and 17" rear
    * Different fairings from the spares pile
    * New wheel bearings all around
    * Quick release fasteners.
    I had them sitting around waiting to go onto the old fairings and never put them on
    * New RHS clipon (kept the old one as a spare, will straighten it out one day).
    * Swapped brake hoses.
    Turns out whoever put the brake hoses on had them around the wrong way, so it wasn't getting full travel at droop.
    * New master cylinder spigot. Bought a 'good, works perfectly' master cylinder off ebay for relatively cheap. Turns out it didn't work at all, piston was siezed. Easier to swap the spigot over rather than rebuilding it. Bled the brakes... was a bit of a bastard from completely dry but finished it relatively easily.
    * Modified some of the ignition coil wiring and also cleaned up a couple of other things.
    Hopefully this gets rid of the annoying occasional miss we've had.

    Will need to fab a new enclosed belly pan for the 1 hour but it's at least together so we can test all of the components. Also need to fab a removable panel for the tail so I can easily do water and oil. Plus it'll get a paint in the old paint scheme.
     
  2. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Supercorsas good. Bike ran like a champ all day.

    I need sleep.
     
  3. Gosling1
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    Gosling1 Forum Whore of Death Veteran Member Supporter

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    Mechanic Of The Year.
     
  4. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    [​IMG]

    Worked well at the 1 hour till the back brake seized on. Have ordered a kit for the caliper, master cylinder, a new rear disc (one that is on it is toast) and a few other bits and pieces.

    [​IMG]

    [​IMG]

    We did the brave step before the 1 hour of leaning it out a step. Many thanks to [MENTION=10693]Moto_Garage[/MENTION] for the dyno sessions, as I had a really good idea of where it was even before Stace did a plug chop to check mixtures. Ran beautifully after dropping down one main jet.

    Means we're at a point where mixture really matters and we can't get away with running it hugely rich all the time for safety. To assist Stace with jetting it, I whipped up a jet holder today. Not perfect by any stretch, but it's perfect for holding the jets and fits nicely in a little spot in the toolbox. Also engraved (badly - I got good at it just as I finished) so none of the markings rub off.

    [​IMG]

    Bit of a bastard to find a tap to cut threads for the small Mikuni hex jets. They're an odd metric size (M5.3x0.9) but a British Association #1 tap is close enough (thread angle slightly different but not enough to stop it working).

    Need to complete the collection of a couple of jets but the ones we're likely to use are all there. Then it's a case of teaching Stace how to jet the thing as well, just in case I'm not around :).
     
  5. Binksy
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    Binksy Member

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    Looks like you've had some practice with taping threads, want to do some on the daytona? :)
     
  6. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    What do you need tapped? :)
     
  7. Binksy
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    Binksy Member

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    Need to get some bar ends sorted out, figure ill just find a flush mounted cheapie from somewhere and tap a thread in. Pretty sure the only thread tool I have access to is about 50 years old and all imperial :(
     
  8. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    I've got a metric set on the way. Also have some timeserts in M6, 8 and 12.

    Are they hollow clipons? Rubber ones that come with cheapies work fine if you have a big enough hole.
     
  9. Binksy
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    Binksy Member

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    Don't think so im going to have another look tomorrow but they seem reasonably solid, certainly aren't just black capped on the ends like some of the others ive seen. Finish on the end seems to suggest its been cut off at a length.
     
  10. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    K. Wouldn't be hard to sort something :).
     
  11. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    [​IMG]
    From the advice of both [MENTION=7083]RossoOz[/MENTION] and also [MENTION=10693]Moto_Garage[/MENTION] - always, always, always, always listen to the advice of your tuner. After all - they know what's best about how to adjust the jetting away from the dyno, too :D.

    Air density gauge should make it easier to run both Stace on this and me on the RD250LC next year.
     
  12. MickLC
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    MickLC Member

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    I bet the air density is less after all that maccas we ate on Saturday
     
  13. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Depends. CH4 would be less dense but H2S is more dense. I might have to do some experiments with it ;).
     
  14. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    moar bits
    [​IMG]

    Still waiting on rear caliper pistons, front m/c and caliper rebuild kit, throttle to convert to quick action, rubbers to mount chambers, exhaust springs, tygon fuel line and rear pads, but we're getting there :).
     
  15. Charlie
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    Charlie Member

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    It'll be a new bike!
     
  16. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    It's now a bit of a grandfather's axe sort of thing ;).
     
  17. Humptey
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    Humptey Member Supporter

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    Total segue from what I should be doing, did you find a metric tap and die set? I have one, used pretty regularly, not sure what that's saying about my mechanical skills tho'....
     
  18. Binksy
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    Binksy Member

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    [MENTION=44625]Humptey[/MENTION] Nah im right mate :)
     
  19. MIZ
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    MIZ Member

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    NEW CHAMBERS SQUEEE!!!!!!111!!!!!!!!
    [​IMG]

    [​IMG]

    Look better polished up to remove the fine little scratches from the post, too!
     
  20. Charlie
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    Charlie Member

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    Very nice!