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Suzuki GSX-R 750 M (1991)

Discussion in 'My Bike' started by supamodel, Dec 21, 2009.

  1. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    [​IMG]

    Sometimes you gotta know when to fold 'em.

    Had got to a critical junction in terms of other stuff needing to race it. On sold all of the spare race gear to a bloke in Queensland who wants to race an '88, which is what year the track bodywork was anyway.

    I can also heartily recommend http://www.transdirect.com.au/ for your courier needs. All the bodywork, wheels, tank etc took up one and a half portarobes and it wasn't too bad to freight it to Queensland, 3 days on road freight to the outskirts of Brisbane.

    Now to get the bike from Charlie sometime and get it roaded again.
     
  2. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Back from the dead... got a smoking deal on a subframe and a rear seat cowl.. So I guess I should finally get the head off and fix the valve stem seals and make it back into a road bike.

    ... I'd forgotten I still had it till I unearthed it in the garage on Saturday.
     
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  3. jaffa
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    jaffa Member

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    Jeez, this stuff look familiar, dont have a front axle lying about do you?
     
  4. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Your front axle would be different to mine :). But no, I don't. For a reasonable fee would sir like one out of titanium? By reasonable... it'd probably be about $150 worth of Ti stock :D

    EDIT: Actually I'm unsure about running either that front or rear wheel in your bike. I think the swingarms are too narrow on the earliest ones to run the 5.5" rear, and the RWU forks are very different in both caliper mounting points (and hence desired brake rotor offsets) AND axle diameter and lengths. You'd probably need spacers lathed up at a minimum.
     
  5. Datzcrzy
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    $150 Ti axle ain't bad, on par with a new Suzuki part which costs about the same.

    Think I need to check this one out, I don't remember seeing much of it your shed
     
  6. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Heh. It was buried right at the back... actually still is. The only difference is I put wheels on it so I could move it out of the way so I could get to my large rolling tool cabinet again (the bottom two drawers only contain rarely used tools).

    Plus it has none of the bodywork on etc, so it's not so obvious.

    EDIT: That axle is just the price for the titanium stock. Depends what I charge for my hourly rate as to what it would actually cost. Each of the fork caps for my GT project took 5 hours of machining.....
     
  7. Datzcrzy
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    Yeah I thought it was just for the Ti stock, obviously a lot of time goes into making it. I bought a rear axle (OEM) and it was $150. So even if just making it for yourself, that's pretty good really.
     
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  8. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Yeah. Best part about being able to turn things up really :). Spacers and axles. What I would like, off topic of course but this is my thread anyway :D, would be a rotary broaching tool. Then I could cut internal hex into stuff like axles. That'd be super nice. Right now I'm limited to doing external hex like I did on the GT.
     
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  9. jaffa
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    The intent, after a shakedown period next year is to change over the complete front end and swingarm to accommodate the rims, then move to 17" hoops so I can get slicks on the thing....longer term.
     
  10. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Yeah. I'd probably be looking for a cheap set of 1988-1989 forks to start with :). Can't run the 1990 USD forks as it didn't come with them, alas.
     
  11. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    [​IMG]

    [​IMG]

    [​IMG]

    Now to undo the hacks required to the subframe to make the race tail fit.

    Contacted a wrecker in the states, got them to hack off the subframe as I only needed that, the frame itself was toast anyway and a US frame would be useless here. Didn't end up costing that much; there was gonna need to be some serious fabbing to make a seat mechanism work again and a bunch of other stuff anyway.

    Was a small risk because the US never got our '1991' completely, they had a half-arsed version that was based on the 1990 models. But, fortunately, the subframe is correct :).

    Now to await the rear seat cowl.
     
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  12. davo231481
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    What parts are you after?
     
  13. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    For? Mostly for this to get it back to standard I need a 1991 seat, which is easy to come by, and I need to get around to finishing off fixing the valve stem seals :).
     
  14. davo231481
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    Ive got these bits if your interested[​IMG][​IMG]
     
  15. davo231481
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    davo231481 Member

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    Ive also got the plastic headlight holder/ bracket
     
  16. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Nah all good, this one is 100% complete for road gear except for the hacked up seat. Plus it's a 91, so, diff bodywork.

    [​IMG]

    It once looked like this, and it will again :).
     
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  17. ozzie-crawl
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    What do they handle like the early 90s GSX-R
     
  18. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Pre or post spending $1500 on it?
     
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  19. ozzie-crawl
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    ozzie-crawl Member

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    Was that a reply to my question ???
     
  20. supamodel
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    supamodel Secret Aaaaaagent Man Staff Member Moderator Supporter

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    Yeah, sort of :).

    They handle ok. Frame wise they are pretty rubbish until 1996, the old beam frame flexes and carries on and feels a bit imprecise. Standard they were ok but a bit low at the back and didn't turn right... I've never ridden a stock SV but by all accounts sort of like that.

    Lots of potential in them, especially the 1990-1991 ones with the upside-down forks. They're internally the same as used much later and are fantastic. Plus they have actually quite good brakes for what they are - once you put in good pads and rebuild them etc.

    With the money invested in the springing and modifying the damping of both the front and the back, it handled excellently. No dramas at all riding it at Wakefield etc. It might be a little stiff for the street but it was actually really, really comfortable the few thousand km I put on it after throwing the money at the suspension.

    ... but you never really get around the fact the frame creaks and flexes and carries on.
     
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