Trident Project

Discussion in 'Builds & Projects' started by robkent, Jun 21, 2017.

  1. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    Hello all, recently joined here as I'm just starting a Trident based project and hoping for some advice and suggestions as my experience with Hinckley Triumphs is basically zero....
    But first, a bit of background....about 3 years ago I took early retirement after working most of my life in the motor industry, rented a little workshop (actually a converted shipping container) and now spend most of my time pottering about building/restoring bikes. Then, about a year ago, I had the urge to design a bike with a classic look/feel to it but using modernish components......my first try was a sort of 60's style clubman race bike using Honda 650 single parts, pic at the end as I haven't worked out how to stick them in with the text yet! I've since built 2 more complete ones, each a bit improved and also 5 frame/bodywork 'kits' so now I'm planning to do much the same thing but using a Trident as the base bike, eventually it should look a bit like the one also in a pic below!
    I'm only thinking things through so far, as I'm presently finishing off a Triton build but have picked up a 91 Trident 900 ....and plenty of steel for the frame!
    So, first question.....it will be having wire spoked wheels....how easy a fit are the wheels from a Tiger, or maybe even a twin? Mainly concerned with whether the front hub will fit Trident forks, specially in terms of width....

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  2. Red Thunder

    Red Thunder Crème de la Crème

    Dec 2, 2014
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    High Wycombe
    Those look fantastic!
    Sorry I can't help with your question but someone will be along shortly.
     
  3. bogg

    bogg Senior Member

    Feb 21, 2016
    300
    113
    west sussex
    @Cafe Hinckley is in the finishing stages of a build now with wire wheels
     
  4. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    Thanks, just had a read of that thread....looks like its not going to be as straightforward as I'd hoped! Was concerned there was going to be a clearance issue between spokes and calipers....
     
  5. bogg

    bogg Senior Member

    Feb 21, 2016
    300
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    I'm sure cafe will help
     
  6. Cafe Hinckley

    Cafe Hinckley Well-Known Member

    Nov 2, 2016
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    I am indeed in the middle of this and yes it is proving a bit tricky but not insurmountable. Here are some top tips:

    I used the rear hub off a Legend and so far the main issue i have run into os the sprocket carrier. Trying to use the Daytona one just doesnt work as it does not clear the spoke nipples on the inside of the wheel and threrfore cant slide over the cush drive. This can be easily sorted by your local machine shop (if they are less ham fisted than mine) as the only real difference is the shape of the flanges - i'll add a pic.

    Also getting a disk for this has not been the easiest - the only one i have found so far that will fit is the EBC MD645 - i have yet to get all the elements together to check the spacing which may also be an issue but will report back on his once i have got mine in.

    On the front I have utilised a Thunderbird Sport hub. My biggest advice is to get a cross spoked rim. If you dont, like me, you will have to start shaving off material from the rear of the caliper for the spokes to clear. You will also have to machine 1mm front the caliper mounting face so that the disks align in the caliper.

    Finally I had to have a bigger spacer made - i replaced the original with a 25mm spacer i had made out of stainless steel.

    Still doing final fitment and tweaks and will ad a few more pics once iu have things dialled in.

    Cheers
    CH
     
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  7. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
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    Kent, UK
    Thanks for that CH....I've come across the spokes/caliper problem before and am trying to avoid that....still hopeful the easiest choice is Tiger wheels....will try to find one and have a measure before I go any further down that road.
    Better news for me though is I had time to completely strip the bike today, weighed everything and now fairly sure I can cut its weight by around 40kg or maybe a little more....which should make it a fair bit more lively....shame its going to have me sitting on it eventually!
    Also, have a much clearer idea in my head of how the frame is going to work.....it'll be fairly similar to the one in the pic that I made recently for a CBR400. Its also going to be possible to retain the stock airbox I think.
    What I can't decide though is whether to make the frame so that the cam cover can be removed with the engine in place like the standard bike....I want the bike as compact as possible and am tempted to build the frame rails very close to the top of the motor....which would mean dropping it to check clearances etc....

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  8. t552

    t552 Senior Member

    Nov 17, 2014
    416
    113
    Bristol UK
    #8 t552, Jun 24, 2017
    Last edited: Jun 24, 2017
    I can only advise against spoked wheels on a trident based bike. There is an unwritten rule about spoked wheels in high performance bikes unless they can be fitted tubeless, like modern BMW's, Ducati's etc. This is due for safety reasons that if the tyre spins on the rim which is possible on spoked rims with anything near 100 bhp if will rip the valve from the tube causing instant deflation.
    when spokes were in vogue the machines were fairly low power, and the tiger, thunderbird was de-tuned. I urge you to reconsider this. btw I have seen this happen.
    Our race tiger was fitted with alloy wheels for this very reason and so was Brian Harris's tiger R.
    Death can be rather fatal.

    Brians bike
    [​IMG]
     
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  9. Cafe Hinckley

    Cafe Hinckley Well-Known Member

    Nov 2, 2016
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    For the record - mine are tubeless!!

    Both using Excel Rims with the front being built on a custom Talon hub and the rear on an original Thunderbird one so both should be more than up to the job!

    *fingers crossed :)
     
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  10. t552

    t552 Senior Member

    Nov 17, 2014
    416
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    Bristol UK
    Tubeless is good
     
  11. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    I'd agree its something to consider certainly but I don't believe its a major worry, the original Daytona triples (which I hope this project bike will eventually vaguely resemble) were around 80hp and race bikes of a similar period, such as a TZ 750 for example probably around 110 hp....and many classic race bikes today have 90 or more hp.
    I'd also think that the Tiger motor was detuned so that the its power delivery was more suitable for its intended use, ie an adventure type bike, rather than a concern about tubed tyres, surely if that was the case Triumph would either have used cast wheels or at least fitted rim locks?
    I've also seen the valve ripped from the tube but as the result of a puncture ( ie the tyre turns once deflated) not the cause of it....
    A previous project of mine, with a TL1000 motor also had spoked wheels and never showed any evidence of creep with around 120hp.
    That said, its something I'll bear in mind (assuming I actually find some suitable wheels) I'll fit the tyres dry, possibly a rim lock and index them ....and be very pissed off....at least for the couple of seconds before I die....if it actually happens!!

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  12. t552

    t552 Senior Member

    Nov 17, 2014
    416
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    Bristol UK
    I think that you will find the Daytona gives around 98 bhp and about 62 ft/lbs of torque at the tyre. my own trident with short stroke pistons is 108 at the tyre. a fair bit up on 80bhp.
    where did you get that figure from?
    they can without too much trouble get to about 115 and start to max out about 125
     
  13. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    I was meaning the original racing triples not Hinckley ones....I was working for a team competing in a support race during the Transatlantic Trophy as a teenager and some of the British team were using triples....made a huge impression on me. This project is really a sort of homage to those bikes....not being able to afford the real thing!
    In truth, its never going to be used very hard....its just a try at recreating some of the feel of those bikes...leaving aside the spoked wheels I only recently talked myself out of finding some nice spindly forks and a set of drum brakes for it!!

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  14. t552

    t552 Senior Member

    Nov 17, 2014
    416
    113
    Bristol UK
    LOL. I was with one of the teams when they resurrected the trans Atlantic race with Mk1 speed triples.
    Maybe worth fitting tbird cams in it to just curb the power a little just for safety sake.
     
  15. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    I remember hearing about that but never went to one, I think the very first series all the bikes were triples but the ones I remember whatever the riders normally used, Sheene on Suzuki, Roberts Yamaha etc and a couple of guys at the back on Harleys, Cal Rayborn for one....sounded nice though!
    Wheel progress today (said in Jonathan Ross voice) as I picked up a Tiger front this morning, the hub is narrower than Trident and the spindle smaller diameter but the Trident bearings, speedo drive and seals all fit meaning all that was needed to fit it was a couple of 9mm spacers either side machined and a new bearing spacer made up.
    Trident discs though are a smaller pcd so will be fitting Tiger discs when I get hold of them and I'm guessing the Trident calipers will have to be moved about 4mm in for everything to line up....fairly convinced there won't be any clearance issues though....
    Oh, and tyre in pic is just a rolling around workshop one....eventually to be replaced....even I draw the line at riding something fitted with a 25 year old speedmaster!!!

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  16. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    Not had much time spare recently but made a start on the frame the other day at least....
    Had been hoping to retain the stock airbox but thats looking unlikely now so any info on pod filters, jetting etc would be of interest!

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  17. bogg

    bogg Senior Member

    Feb 21, 2016
    300
    113
    west sussex
    I went for ram air pod filters and 6sigma jet kit, lookup their website
     
  18. robkent

    robkent Well-Known Member

    Jun 12, 2017
    131
    83
    Kent, UK
    Thanks, will probably go for something like that.....got a bit further with the frame today....

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  19. dilligaf

    dilligaf Guest

    That's looking good mate :p
     
  20. DCS222

    DCS222 Guest

    Very nice dude
     
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