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Thread: Drixton 500 twin build

  1. #321
    Senior Member LiamG6's Avatar
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    that clutch run-out is nasty! could it have anything to do with the fact that franco replaces the rivets that hold the basket to the gear with bolts? Not aligned correctly or some other issue? Jensen had exactly the same issue with his K0 and attributed it to incompatibility with the K0's clutch basket and cappellini parts, but this appears to be an issue with 2 of franco's own parts.

    Bike runs strong, good traction, good thing she looks fast standing still because she takes a bit to get going, bet it feels faster than it looks though.

  2. #322
    Senior Member sport&road's Avatar
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    The Nova six speed gearbox has arrived. A couple of installation issues to check with Nova but other than that all good.

    A couple of photos attached.

    Drixton 500 twin build-20170103_132658.jpgDrixton 500 twin build-20170103_132753.jpgDrixton 500 twin build-20170103_152248.jpgDrixton 500 twin build-20170103_154032.jpg
    dtsmjr8dan and sf350 like this.

  3. #323
    Senior Member sport&road's Avatar
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    What is Different:

    As with everything new purchased for this thing, no one gives you all the information.

    It must be a neat game by manufacturers and suppliers to see who can get away with giving you the least amount of information required to make your life harder.

    Nova Gearbox Swap

    1) The Selector drum is shorter than the factory unit and does not pass correctly through the seal in the upper case on the primary drive side. What is required is that you do away with the seal and machine up a blanking plug to be glued into place.

    2) The factory clutch lifter piece is not the right size for this new mainshaft (too big) so you need a special unit which did not come with the box.

    3) They forgot to send me the special split pins that hold the selector fork pins in place.

    4) The modified mainshaft has a nut on the end instead of the factory circlip. You guessed it they forgot to send it to me.

    5) They missed out on sending me one of the washers that sits inside the needle roller bearing in the case.

    6) The gear sets have 5 or 6 heavy dent marks in the gears.

    I will guarantee you, if I buy a product from someone who has maybe 100 of them sitting on the shelf, they will send me the one that is missing components, mis machined, faulty or damaged.

    This is a $3,000 gearbox, so not an insignificant purchase.

    Drixton 500 twin build-gearbox-5-.jpgClick image for larger version. 

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ID:	130489Drixton 500 twin build-gearbox-6-.jpgDrixton 500 twin build-gearbox-7-.jpg
    Last edited by sport&road; 01-03-2017 at 08:29 PM.

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  5. #324
    Senior Member -alan-'s Avatar
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    No it's not just you S&R, I seem to get the 'opened/returned because of missing/faulty parts' items all the time too

    The thread has been enlightening in terms of how well, or otherwise, performance parts may fit with the OEM components.

    Out of curiosity, what will you do with the indented gears - try to smooth them out by hand or send them back for replacement ?
    CB450 K5

  6. #325
    Senior Member ancientdad's Avatar
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    Finally took the time to read this entire thread... all I can say is Wow. I don't have anywhere near the money nor the patience for a build of this level, given the issues encountered with the combination of aftermarket parts (albeit the best that can be bought) and the lack of information supplied for the investment. Sport&road, I admire your tolerance and dedication to this project - fabulous job.
    sf350 and dtsmjr8dan like this.
    1973 CL450K5 Brat

  7. #326
    Senior Member dtsmjr8dan's Avatar
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    I agree, ancientdad. This has been one of my favorite threads to watch. Everything done in a top notch manner. I feel for the OP for the inferior parts he's had to deal with.
    1979 CM400T (rider),
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    Past rides: Vincents, Triumph, BSA's, Suzuki's, Twingle, Corgy, others.
    Remember, today is the tomorrow we worried about yesterday.
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  8. #327
    Senior Member sport&road's Avatar
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    I appreciate the encouragement. The whole build has been very enjoyable, I just wish I had the knowledge I have now when I first started.

    I machined up the blanking plug for the selector drum last night. They do away with the extra length on the selector drum as I believe that only triggers a neutral switch on the std road bike.

    Drixton 500 twin build-20170104_183211.jpg

  9. #328
    Senior Member sport&road's Avatar
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    Quote Originally Posted by -alan- View Post
    No it's not just you S&R, I seem to get the 'opened/returned because of missing/faulty parts' items all the time too

    The thread has been enlightening in terms of how well, or otherwise, performance parts may fit with the OEM components.

    Out of curiosity, what will you do with the indented gears - try to smooth them out by hand or send them back for replacement ?
    Nova and the original re seller are looking at the gear set damage at the moment. I am supposed to be running at a big International meeting at Phillip Island end of January so I will probably just have to blend them out until they decide what to do and who is at fault.

  10. #329
    Senior Member ancientdad's Avatar
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    Quote Originally Posted by dtsmjr8dan View Post
    I agree, ancientdad. This has been one of my favorite threads to watch. Everything done in a top notch manner. I feel for the OP for the inferior parts he's had to deal with.
    Absolutely - if I'd spent 25% of what he's spent (wait, that should read 2.5%!), I'd be screaming at people to double-check to be triple-sure of their stuff. I've been fortunate in my adventures over the years with this kind of thing to get a combination of good, mainstream parts and a little luck to go along with it. Certainly never encountered the kind of mind-wrenching frustration that he's described, although he seems to have the right mindset to deal with it (though we don't know how many moments of venting happened that weren't pictorially documented!)
    1973 CL450K5 Brat

  11. #330
    Senior Member ancientdad's Avatar
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    Quote Originally Posted by sport&road View Post
    I appreciate the encouragement. The whole build has been very enjoyable, I just wish I had the knowledge I have now when I first started.

    I machined up the blanking plug for the selector drum last night. They do away with the extra length on the selector drum as I believe that only triggers a neutral switch on the std road bike.

    Click image for larger version. 

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    Again, excellent work sport&road, top flight. The smile on your face when the initial run video ended (along with the sound of a female voice who seemed quite pleased) was worth the long read. I know that feeling well, and I'm trying to patiently wait until it's my turn later this spring...
    dtsmjr8dan likes this.
    1973 CL450K5 Brat

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