Author [NL] [FR] [ES] [DE] [SE] [IT] incontinant Trophy - coolant loss  (Read 2617 times)

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  • Offline gtgt2112

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    Offline gtgt2112

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    incontinant Trophy - coolant loss
    on: Sep 10, 2016, 08.43 am
    Sep 10, 2016, 08.43 am
    An odd and worrying loss of coolant occurred whilst on our trip to Croatia last week. Crossing the Gross Glockner ( 2,576 Meters ) we parked at the top of the bikers rendezvous and stopped to take some pictures, when we returned the was a pool of coolant under the bike. Fearing the worst we proceeded down to the valley were I would have a better chance of being recovered.

    It became apparent that the cooling system was still operational, although more prone to showing five blocks on the temperature gauge, and getting hot more quickly when moving slowly in heavy traffic. We carried on with the holiday and I noted the following.

    The cooling fans stop the moment the engine is turned off, or stalled. The climb up to the top of the pass had been at low speed with many hairpin bends, the bike was not receiving enough airflow (due to the low speed) and the fans were operational, however when I turned the bike off the fans stopped and allowed the radiator to boil and vent coolant.

    On return I replaced 500 mL of fluid in the radiator and expansion bottle.

    Has anyone had a similar experience?

  • Offline bobv07662   00

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    Offline bobv07662

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    Re: incontinant Trophy - coolant loss
    Reply #1 on: Sep 10, 2016, 12.15 pm
    Sep 10, 2016, 12.15 pm
    Check the upper radiator hose clamps. Many here have reported finding them loose.
    1978 Bonneville    1973 Trophy Trail TR5T
    2012 Thruxton      1976 Hodaka ED250
    2014 Trophy SE    1950 Vincent Rapide
    1976 Yamaha RD400C 1967 Rickman 8 valve
    1978 Yamaha DT400E

  • Offline Coconut   gb

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    Offline Coconut

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    Re: incontinant Trophy - coolant loss
    Reply #2 on: Sep 10, 2016, 12.19 pm
    Sep 10, 2016, 12.19 pm
    Also check that the Expansion Tank cap
    ( inside the front wheel arch behind the left side infil panel )
    is secure and sealing properly.

    Last Edit: Jan 28, 2021, 11.29 am by Coconut

  • Offline gtgt2112

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    Offline gtgt2112

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    Re: incontinant Trophy - coolant loss
    Reply #3 on: Sep 10, 2016, 05.53 pm
    Sep 10, 2016, 05.53 pm
    Hi Chaps

    Thanks chaps, but It's negative to both those possibilities. Clamps checked before and after trip no leaks.

    Whilst checking the refilled radiator I ran the bike until the fans cut in, no leaks no problems. I noted that when the fans cut in they only require a few minutes to cool the engine down to four blocks. So I conclude it was the altitude, the hard climb and me switching off at the top, when maybe I should have let the bike idle until the temperature was normal.

  • Offline Keith-Trophyhusband

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    Offline Keith-Trophyhusband

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    Re: incontinant Trophy - coolant loss
    Reply #4 on: Oct 01, 2016, 12.18 pm
    Oct 01, 2016, 12.18 pm
    Had a similar thing happen back in the summer, after a huge days ride (Valencia to Andorra via Barcelona) and the usual traffic jam and queue for the boarder so bike was very hot. Puddle under the bike but it seems a little goes a long way, took 250 ml when it had cooled down. No issue since.

  • Offline Wscad

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    Offline Wscad

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    Re: incontinant Trophy - coolant loss
    Reply #5 on: Oct 05, 2016, 03.18 pm
    Oct 05, 2016, 03.18 pm
    I had the same problem. A relay that switches on one of the cooling fans was faulty therefore only one fan was working.
    Relay was replaced and all back to normal.

  • Offline Steven ZS6XU

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    Offline Steven ZS6XU

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    Re: incontinant Trophy - coolant loss
    Reply #6 on: Oct 05, 2016, 07.46 pm
    Oct 05, 2016, 07.46 pm
    I had that problem with my old VN1700, I used to shut off then turn the key on to let the fan run for a while, then turn off, I was always last at the club meetings, the Trophy did it today, needs to cool off a bit, I am a generator engineer, there is a reason we run 3 minute cool-down times,  do the same on the bikes, it's 28*C in JHB today and tomorrow the same
    There is always time to ride, you can't when you are dead, so do it, work can always wait a bit. Previous bikes: Yamaha XT500, Honda Shadow ACE, Honda Blackbird FI, Kawasaki VN1700 Classic Custom and now 2 Trophy SE's, His and Hers

     



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