1968 triumph trophy 250 help

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1968 triumph trophy 250 help

Postby Rampage » Tue May 28, 2013 6:38 pm

just got it, put the charger on it and it pegged the meter, short some where

anyone have a wire diagram to star?


THANX r
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Re: 1968 triumph trophy 250 help

Postby Welsh Wizard » Wed May 29, 2013 2:16 am

only seem to have a parts book on file for the 68 Trophy, If T calls in he may be able to point you to the right place to get either a downloadable manual or what other choice are available, if you are a first timer, then a Haynes manual would not go amiss.
( by the way if you want a copy of the parts books I could e-mail it to you it only about 3.4 meg in size. just PM if you need it.)
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Re: 1968 triumph trophy 250 help

Postby Rampage » Fri May 31, 2013 4:18 pm

Thanx Boss
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Re: 1968 triumph trophy 250 help

Postby Paul in NZ » Wed Jun 05, 2013 1:52 am

Hold on... Are you saying you put the battery charger on it without disconnecting the battery and the meter went on full deflect?

A better test is disconnect the battery - charge it up and reconnect it. Then see what happens... You can't diagnose any bike system with a flat battery.
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Re: 1968 triumph trophy 250 help

Postby Rampage » Wed Jun 05, 2013 10:24 pm

ok I'll try with just a battery i was just using the charger without the battery

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Re: 1968 triumph trophy 250 help

Postby Paul in NZ » Mon Jun 10, 2013 10:31 pm

Rampage wrote:ok I'll try with just a battery i was just using the charger without the battery




Oh dear god don't do that. A battery charger is NOT a 12V source but rather it depends upon the internal resistence of the battery to regulate the voltage. Open cct like that its quite capable of sticking a damaging voltage into your system. Theres a better than even chance you have just fried your rectifier / regulator... Thats not a biggie as modern replacements are both cheap and more efficient than the originals.
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Re: 1968 triumph trophy 250 help

Postby Tman » Fri Jun 14, 2013 7:13 am

Wouldn't think so. Battery chargers kick out next to FA current for obvious reasons and often have internal cut-outs to prevent overloads. Aside from that, older style (ie non-integrated) Zener and rectifier set-ups are very tolerant of a higher voltage.
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Re: 1968 triumph trophy 250 help

Postby Paul in NZ » Mon Jun 17, 2013 2:56 am

Tman wrote:Wouldn't think so. Battery chargers kick out next to FA current for obvious reasons and often have internal cut-outs to prevent overloads. Aside from that, older style (ie non-integrated) Zener and rectifier set-ups are very tolerant of a higher voltage.


Yes but the voltage can get quite high. Good battery charges are limited but cheap ones not so much as indicated by his ammeter going full deflect.

Look - everyone has an opinion and mine is that I never start trying to diagnose issues with a bikes electrical system unless i have a known good battery in the system. And I'd never hook a battery charger across a system without a battery there...

Like I said - just an opinion on the internt...
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Re: 1968 triumph trophy 250 help

Postby Tman » Mon Jun 17, 2013 8:05 am

I agree on both counts Paul. I wouldn't connect a charger across open terminals either, not because parts are gonna burn but because it won't tell you much.
Looking at the condition of that Trophy I would say it's been running recently, so buying a nice new battery is pretty much a necessity anyway if he's thinking of actually running it.
A very under-rated little bike, even if they were really B*A's.... :1204
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Re: 1968 triumph trophy 250 help

Postby Rampage » Sun Jun 23, 2013 1:52 pm

hasn't run in 16 years, but its all very clean and ingood shape. It was inside all this time.

I gotta new battery and even when I unhook the start switch wires, a boat load of currant goes threw the wires if i hook it up and they get "HOT".
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