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governorsam

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Posts posted by governorsam

  1. from what i can tell the forks and front wheel are humber, as in humber cars.

    rear hub is a perry, and a munted brooks saddle.

    no other markings anywhere.

    the bsa has a shimano 3 speed hub with twist grip changer.

    ladaspeed, keen to get those tyres off you, would be cool to take this thing for a ride as is on the next tweed run.

    or even the pub tbh.

  2. f is field

    e is earth

    n is relay control bit, 6v is fine.

    unplug 3pin plug, put 12v "+" to "F" and that will bypass reg.

    start up, not reving too much, check voltage at batt. should be 13.8v and upwards as you rev it more.

    not too much, as the reg has been bypassed. go over 15 volts, you will start blowing bulbs and boiling batterys.

    if all good, turn everything electrical on full - wipers, lights on hi-beam, heater, etc.

    run above test again, this will load test alt, wiring and belt slippage.

    put volt meter between batt "+" and alt"+" under full electrical load, and rev up a bit.

    no more than 0.5v

    same from batt "-" and alternator body.

    report back findings when done.

    go.

  3. wiring should be fine, just get repaired what is needed. fuse box on these are prone to playing up.

    replace fuses, and clean up the terminals with a bit of wet and dry sandpaper.

    also check plugs to the dash, sounds like they were the last things to be touched.

    failing that, should be able to help after work some day if needed.

  4. loose fan belt? voltage drop?

    if you can turn the alternator fan by hand and it slips on the belt, may be the problem.

    run motor about 2-3000 rpm, voltmeter on the battery should be 13.8 to 14.2 volts.

    now turn on high beam lights, wipers, heater, etc to full, recheck.

    if lots lower, its either the fan belt, or voltage drop.

    measure voltage between the battery + and the alternator + under load (everything turned on as above, revving the motor)

    anything more than 0.5 volts is worth looking at.

    repeat with the earth terminals, but go from the batt negative to the block. also check from batt negative to the body.

    if all this fails, drink beer / kill it with fire.

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