Featured 1971 T100c Refresh

Discussion in 'Vintage Classics' started by Sundance, Aug 6, 2022.

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  1. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    OK, good question, here is some of the info from what I have been able to gather.

    Back, sometime in 1970, a woman in her mid-40's was having problems with an abusive husband who was (I think) an Arlington VA police officer. She wanted out of the relationship and got out, but was concerned about her safety. So she somehow associated herself with the Pagans, I think a/the chapter in Maryland, who would be able to provide her with some protection. So this seems to have been the reason for her also buying this Triumph. I think, in those days, Pagans may have ridden primarily Triumphs. So time goes on and this woman passes at a good old age in her 90's I think. Her family gets around to managing her property and there is this motorcycle in the garage or barn or something. They offer it to a neighbor who rides and this is where/when it changes hands, sometime in the last 10 years or so. By the way, I also have the leather jacket that she wore as it conveyed with the bike! If you know anything about the Pagans - let me know.
     
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  2. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
    1,106
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    appalachia usa
    #22 speedrattle, Aug 17, 2022
    Last edited: Aug 17, 2022
    be careful who you show the jacket to if it is pagan specific, especially if there is a lower rocker with some regional designation. they typically remain the property of the club and current members might take offense at you retaining it, especially if you wear it.
     
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  3. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    Thanks, the jacket is bare of patches, rockers, etc. That would be something!
     
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  4. Iron

    Iron Elite Member

    Dec 29, 2021
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    Bob Ross Studios
    #24 Iron, Aug 17, 2022
    Last edited: Aug 18, 2022
    Just for interest, the Pagans didn't wear bottom rockers back then. What a great history for the bike though.
    Yes, agree with SR, and so it begins.....
     
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  5. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    Fibre Washers - Rather than getting fibre washers piecemeal (say from a vintage bike retailer) for my bikes when changing oil, etc, I am wondering if any member has had luck with finding a place to get an assortment of good quality fibre washers of various sizes useful on Triumphs? Thanks for any advice on this.
     
  6. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    I was finally taking my T100C out for a longer run, about 45 miles. I was returning on a parkway, driving at about 55 mph for 15 miles before turning off. When I turned off I slowed down then attempted to speed up and ship into 4th gear. The bike lost power and stopped running, so I shifted to 3rd and it started again, but would not keep running unless I had high revs. This happened several times on the few miles back home. It seemed like it might not be getting fuel, but then when I kept the revs up it was ok. I eventually turned it off and it restarted with no problem. Any comments are appreciated!
     
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  7. Iron

    Iron Elite Member

    Dec 29, 2021
    2,554
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    Bob Ross Studios
    Electrics I reckon go for the Ignition switch first. :)
     
  8. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    OK, thanks. Is it the idea it could be shorting out or loose? Again thanks.
     
  9. Iron

    Iron Elite Member

    Dec 29, 2021
    2,554
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    Bob Ross Studios
    Temporarily take the ignition switch out of the circuit. Hot wire it, take it out for a ride.
     
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  10. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    I am rebuilding the carburetor on this bike as I believe that was the problem I was having with intermittent fueling. It turns out the float was worn through so was likely sticking. I've got the carb apart and waiting for parts.


    I decided to redo the fuel lines also and when examining found that the petcocks were leaking, that is when fully closed there was still some fuel coming through.


    I was hoping I could rebuild the petcocks also, as there seems to be a rubber washer inside the petcock that could be replaced. I haven't found anything on-line about rebuilding these so I am wondering if any of you have rebuilt your petcocks previously, and if so where did you find the new internal pieces?


    Thanks for your help!

    IMG_4269.jpeg
     
  11. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
    1,106
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    appalachia usa
    try any auto parts store for fuel-proof washers. failing that, buy em at the hardware store and see if they last.
     
  12. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    OK, thanks for the idea. I would have thought this would be something a bit more rare - but if some standard washer will work then great!
     
  13. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    So I never found a rebuild kit for my peacocks. I went to ace hardware and found some o rings the same size as in these old petcocks - as the old ones were hard as a rock. It was relatively easy to disassemble the petcocks, clean them with 000 steel wool, replace the o ring and put back together. Now to test them for leaks.

    upload_2022-12-31_17-57-42.jpeg
     
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  14. sprintdave

    sprintdave Nurse,he's out of bed again

    May 25, 2014
    1,491
    750
    Birmingham
    Are the o rings suitable for petrol? I believe some from hardware shops are for water and home use only.
     
  15. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    Good question. One I will need to find out. Thanks. Perhaps I should source them from an auto parts store.
     
  16. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    Ok, I’m pretty sure the o rings I used were for plumbing, so I’ve just ordered some Viton o rings in the same size. Thanks for catching this sprintdave!
     
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  17. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA

    So, I rebuilt the carb and installed it tonight, hoping it would solve the problem of cutting out. It started right up after 2 kicks and smoked a bit, probably due to not having been run for awhile. The the problem started again. It would start up, sometimes run smooth, sometimes rough. If I got it running and held the throttle at one position, the revs would not stay stable but run higher and lower. Then it would start to cut out and I could keep it running if I manipulated the throttle up and down, but eventually it stops. It seems like it is getting starved of fuel, but I am not sure because it would start up and run a bit. Then there were times if I gave it too much throttle it would die. So I am not sure what to check next and welcome any thoughts. Ran it with the gas cap in and off and no difference. Thanks for any advice!

    I suppose I should try Iron's advice about checking the ignition switch!
     
  18. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
    1,106
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    appalachia usa
    #38 speedrattle, Jan 11, 2023
    Last edited: Jan 11, 2023
    have you actually measured fuel flow through those petcocks yet? measure what comes out of the carburetor drains wit the taps open.

    wavering idle is one symptom of severe leanness

    you need 300 cc per minute from each of them to have enough for extended WFO

    take off the gas cap and see if the motor runs okay without it having to suck air through the vent hole
     
  19. Sundance

    Sundance Well-Known Member

    Aug 2, 2021
    217
    93
    Arlington, VA
    No, haven't measured this - how is this accomplished? I've tried to run w/o gas cap and there is no difference. Thanks for the advice!
     
  20. speedrattle

    speedrattle Senior Member

    Feb 19, 2021
    1,106
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    appalachia usa
    its easy. take out the plug from the bottom of a carb. put a kitchen measuring jug under it. i keep one of these in my tool box at the races so i can catch fuel whenever i change main jets in the carbs.

    [​IMG]

    turn on the petcock for 60 seconds.

    300ml is good for wide open throttle on a 650 making decent horsepower, according to a dead guy named pete who knew more than i ever will.

    look for as much on the other side.

    if there is a significantly lower rate of fuel trickling out, then undo the fuel lines at the bottom and do it again. then undo them at the top and check the petcocks themselves. do you have inline fuel filters? youve cleaned the petcocks so theyre most likely just fine. maybe those little top hat filters in the bottom of the carburetters are plugged up but look okay.

    maybe its not fuel, but this will tell you whether youre getting enough.
     
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