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TTI box shift pattern swap

Discussion in 'Norton Commando Motorcycles (Classic)' started by Fast Eddie, Jan 28, 2019.

  1. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Well, I’ve read about this happening before but I thought that because I was so bloody specific about ordering the box with a standard Norton shift pattern, that it would come with a, well, standard Norton shift pattern.

    But, it didn’t!

    So, to my question to you fine fellows:
    Has anyone on here done this swap over before?
    Is it an easy job to swap over?
    Are there any instructions of any kind available?
     
    Last edited: Jan 28, 2019
  2. Onder

    Onder

    Joined:
    May 11, 2010
    I think hobot posted on a TTI teardown with pix at one point.
    If you ordered A and got B Id send it back now and get wot you ordered.
    Why should you have to do work on a brand new piece.
    Of course you could do as I did and apply rearsets and the reverse shift lever.
    So if you start off with a Triumph shift pattern you end up where you wished to be!
    ...better to ship it back now it is THEIR mistake not yours.

    And no I have not a parts book nor a manual for the box. Really annoying.
     
  3. Onder

    Onder

    Joined:
    May 11, 2010
    Last edited: Jan 28, 2019
  4. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013

    Yes you’re right. But, I no longer have the sturdy wooden box it came in and frankly, I’m thinking it may just be less work to change it over than send it back!

    It would also be a good thing to get to know how to work on it of course.

    Really annoying you say.... Damned right it is, this thing cost more than most motorbikes I’ve bought and it still ain’t right !!
     
  5. Onder

    Onder

    Joined:
    May 11, 2010
    Then you will have to spend more money and get the "correct" shifter drum.
    And you are REQUIRED to post pix of the project! :)
     
  6. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Well, I am rather hoping they will supply the correct drum, or whatever I need, FOC...
     
  7. Holmeslice

    Holmeslice VIP MEMBER

    Joined:
    Sep 27, 2009
    Fast One,

    First of all - Bruce and Co. at TTI are very good folks and they will take care of you. The communication required to make sure the drum is the way you want it is something I too have had to perfect having received boxes with shift patterns opposite from what I was after.

    From his perspective, it is std Norton shift pattern if you're using a reverse lever, which most of his customers do. I now simply specify CCW for 1st and that takes the ambiguity out of it.

    You'll need a new drum. I expect TTI will supply and you send the old back.
    And switching them is a piece of cake. That's the beauty of these boxes. If you need help, let me know.

    -Kenny
     
  8. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Thanks a lot Kenny.

    I never thought of specifying gear change as CW / CCW before. Blindingly obvious now though!
     
    Holmeslice likes this.
  9. Onder

    Onder

    Joined:
    May 11, 2010
    er, come to that, I plead guilty too...duh...
     
  10. 84ok

    84ok

    Joined:
    Aug 10, 2014
  11. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Thanks for that !
     
  12. Matchless

    Matchless

    Joined:
    Dec 23, 2010
    Same thing happened to me. Bruce sent me the correct drum which arrived in four days from NZ F.O.C. & you can't say fairer than a quick foc. Very easy swap. Do follow the destructions regarding oil changing though. As you will see the first few changes look like grey soup.
     
  13. Onder

    Onder

    Joined:
    May 11, 2010
    Yes on the oil change. Noticed same when I dropped the oil at the end of the recent year. Not horrible as it has
    4k on it so far (the box not the oil) but dirtier than say my T150V which come out clean.
     
  14. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    In the inner cover, there is a plug which covers the spring and detent ball for the gearchange drum. It is secured with extremely strong white compound. I undid it to change the drum. You don't need to. If you take the sprocket off the box and undo the screws on the timing side, you can slide the whole cassette out and remove the change drum. The detent ball will fall out. But it is easy to just hold it up with your finger while you replace the drum. I think that strong compound was used to make certain the spring and ball don't come loose and allow the box to move right through a gear on up-changes or down-changes.
     
  15. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    Most gearboxes are short enough that you can reverse the change direction by getting the linkage to cross the end of the box. The TTI box is a bit too long to do that. I would have thought that Bruce would have got the change direction right by now. Most racers prefer one up and the rest down. Since I fitted the replacement change drum, the box has been very slowly leaking oil. So it has to come apart again. I didn't use Threebond 1104.
     
  16. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Thanks for the tips Al.

    Re Bruce getting it right, as Kenny said above, it is right from his perspective.
    Most people use a reversed lever and want a down-for-up race type change.
    I am swimming against the tide as I want an up-for-up shift.
    I know down-for-up is better for the track, but all my other bikes are up-for-up and I don’t ride on the track enough anymore for a race shift to become ‘automatic’.
     
    MexicoMike likes this.
  17. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    I know what you mean. However I was brought up competing in races which were push-start. Usually you would run like hell and dump your bum on the seat, then step over reaching peak revs as you did, and your right foot coming down would select the next gear. Then I started racing a Japanese two-stroke with the change on the left hand side. So it all got complicated. I find these days, that whenever I ride on a race circuit, it takes 5 laps until I almost reach race speed. And that is totally regardless of the bike. If it is left -handed or reverse-shift change pattern, my brain adjusts in those 5 laps.
     
  18. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    I prefer a one-up gear change pattern, because you push to go forward faster and pull back to slow down. And the up-changes are faster than the down-changes. You have more time to play with when you are braking.
     
  19. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I agree Al.

    But I either change all my other bikes... get a brain transplant... or change the TTI box.
     
  20. Onder

    Onder

    Joined:
    May 11, 2010
    I prefer Triumph style but all four of my bikes are now Norton style down for higher gear. One thing I like about down for lower gear is that
    if you brake hard and are pitched forward your foot goes down and a lower gear slows you down.
    Uniformity is more important for me at this point.
     

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