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Large Spine Frame XS650 / Egli / Rau / Cafe Racer

Discussion in 'The Garage' started by rehar, Dec 18, 2017.

  1. XSevive

    XSevive XS650 Enthusiast

    we have annual inspections here in New South Wales,some states dont,but do require RWC (roadworthy certificate) if selling,all depends whos doing the inspection ,some guys are a little more lenient than others, eg mufflers must be ADR (australian design rules) stamped etc, its a tricky situation as the RWC are liable for vehicles found to be unroadworthy and are legally have to pay to have them comply if found unroadworthy after testing, a friend of mine had his car randomly spot checked by the authorities 1 day after annual RWC to see if it complies and see if the local guy was adhering to the rules( arrived at his home unannounced)..its kinda like the vehicle inspectors police. as usual the system stinks and is full of holes, so many rules that are set up for cars that affect bikes in a rediculous way.
    rehar likes this.
  2. XSevive

    XSevive XS650 Enthusiast

    the fabrication for the rear end couldnt have been simpler ,i made a template of the FZR donor bike mount points and postioned it so as to change the steering head angle to the required 24 deg, also using the fzr triple clamps to acheive the correct rake and trail. The bike handles just beautifully and the option of a steering damper wasnt needed. only needed to take a couple of mm off the frame swingarm mounts for it to slip in nice.of course things aren,t as straightforward as expected and needed to address sprocket offset and chain tension issues, came up with some nice simple answers for those. Idler wheel mounted rigid to frame in a position that takes the slack when shock extended and as the wheel does it's arc ,the idler progressively goes out of play and maintains the required slack in the chain.Idler is not in play at about half way through the shock stroke.Bottom mount directly to stock crossmember,top mount needed cross tube and strutted to backbone for added rigidty 61938434_2203795663244385_8226475643160756224_n.jpg 62336866_306191703600952_3511732631790157824_n.jpg 20190308_125940.jpg
    TwoManyXS1Bs and rehar like this.
  3. RWC / inspectors police! Oh my God. That's crazy. It does sound like you could buy a "used" vehicle (CAR) with less worry than in the USA though. It's a complete crapshoot. Your inspectors/inspection sure would take the fun out of motorcycling though.

    Nice job on the upgrades! you should post up your own thread - A lot of folks would (me included) would follow those tweaks on a project!
    Your idler arm wheel looks nearly identical to mine! How many miles do you have on it now? Mine isn't quite as rigidly mounted as yours (it's on a bolt on bracket to get in to the right position, I'm sure there is some (minor) movement. Plus 3/4" offset sprocket.). Your running a 160 or 170 rear tire?
    Sounds like you should have fully modernized handling. Well thought out and executed.
  4. XSevive

    XSevive XS650 Enthusiast

    yes at least the general public can assume the used car theyre buying is up to scratch,. the chassis statutory write off laws are designed to stop rebirthing of cars without thought that the chassis of a bike is only another exchangeable part unlike a car where its the entire body.
  5. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

  6. Calendar Write up and some pics from today.

    I have to say, I was completely inspired by the Norton Domiracer, released in 2014. However, this build is in a direction that I would hope to inspire Yamaha! It is designed as a modern classic, with emphasis on "sport".
    The engine started life as a 650 in late 74. The engine comes from Richard Pollock, owner of Mule Motorcycles. It is 750cc, digital ignition, larger valves, hot cams, etc.
    Forks, swingarm and wheels are from various Yamaha R6 vintage.
    The one off chassis (Egli/Rau - large spine frame style) ties it all together with 24°, 86mm (3.38") rake/trail and a 1370mm (54.1") wheelbase.
    Last time I weighed the bike w/oil, battery, all electrics, lights, mirrors, kickstand, everything pretty much there (no gas)... 286lbs (130kg)!

    DSC_0957EC.jpg DSC_0964E2.jpg DSC_0965E2.jpg DSC_0983E2C2.jpg DSC_0984EC.jpg DSC_0985EC.jpg DSC_0986EC.jpg DSC_0989.JPG DSC_0979ECtmi.jpg DSC_0980ECtmi.jpg DSC_0981ECtmi.jpg DSC_0990ECtmi.jpg
    Last edited: Sep 28, 2019
    Scripto VU, Wordman, nighthog and 4 others like this.
  7. azman857

    azman857 '80 XS 650SG Rider XS650.com Supporter Top Contributor

    Do you own a fire suit? That is one hot bike! VERY nice ride there. So original design. WOW! Been watching this thread since day one. WELL done sir!
    rehar, Jim and TwoManyXS1Bs like this.
  8. TwoManyXS1Bs

    TwoManyXS1Bs BBQ Hunter Top Contributor

    About 300lbs wet?
    That's about 6.7 lbs/cu-in.
    rehar and Jim like this.
  9. I have a heavier muffler, heavier seat subframe, paint, tank sealer... 10+ lbs? Fuel laden, wet stimate 310~315lbs... maybe?
  10. Jim

    Jim Beyond the edge, is the unknown. Here be Dragons XS650.com Supporter Top Contributor

    Just level it with wood blocks.. plywood, whatever. I started this like... a year ago? Looks like as good a time as any to finish it. Maybe some enterprising forum member that's smarter than me can turn this into a Spreadsheet for all of us the share.

    W%B cropped.png
    Last edited: Sep 29, 2019
    TwoManyXS1Bs likes this.
  11. I feel stupid. Good or bad, here is what I know today. When I weighed it last summer, it was at 286lbs (no fuel). Now today, weighed on the same scales, same method...

    The bike is weighed "as is pictured" above. The bike is much more developed than it was a year ago. Can I say - it has "matured". And like most of us, as we mature we gain weight. A lot of weight. With fuel... 370lbs. Maybe 350-352 lbs dry (no fuel)? The 53.6% forward weight bias - I'm really happy with though.

    Front to back, areas I suspect added weight:
    Different headlight (LED with MASSIVE heatsink)
    Tank - much more metal went in to that than expected. Then, the sealing materials / internal coatings, fuel lines/petcocks, quick releases, etc
    Heavier slip-on exhaust
    Heavier seat subframe and plate bracket
    new/heavier pipe hanger
    Kick stand (maybe)
    slightly longer Chain (not certain the chain was there at all in the earlier weighing)
    ~3 gallons of fuel

    This all probably only accounts for about half of the weight difference. There must have been other items not in the weight from a year ago.

    This brochure says 462lbs dry.
    Yamaha XS650 brochure.jpg

    Last edited: Oct 4, 2019
    TwoManyXS1Bs and Jim like this.

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