Question about Triumph Trophy 900 Motorcycles
Fitted new battery new brushes to starter motor but not turning over fast enough
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Posted on Jan 02, 2017
SOURCE: Triumph Trident Starting
ok, there is two possibly problems u could be experiencing. ONE: would be a worn out solenoid(needs to be replaced) or TWO: the starter bruckes are worn out so far that it is actually grounding out or they are not conecting to the armature in the starter. this is a relatively easy fix, but to try to find the parts s another story. i would recomend taking it to ur local dealer or a starter repair shop. they will be able to get the parts and fix it for u. my dad works at a starter/alternator repair shop here in chatham ontario.
Posted on Mar 20, 2009
You may need to check your cables to the starter for high resistance. They are 28 years old, and can get more resistant over time.
Posted on Mar 12, 2009
I had the same prob with my '94 Trophy, had to get a new starter clutch. Common prob with these machines. triumph mad an improved version of starter clutch which is larger than original so will need to have the seat enlarged with a special tool.
Posted on May 15, 2010
It could be a buggered starter. They can sometimes pole if the bushs/bearings are worn, and that may not happen till you load it up. I saw the same exact problem as yours with a triumph speed triple recently. It had also mashed up the sprague clutch for the starter. The car battery will always punch more current that a small motorcycle battery, and may even overcome any mechanical bind problems like this, but not on the smaller bike battery. .
Before anything else, I would suggest that you remove the plugs and get a ratchet/socket directly onto the crankshaft and turn it over so as make sure that you dont have a partially seized engine. It should freely turn over with plugs removed.
You have not mentioned it, but did you fully charge the battery when you got it. They are often well below full charge if it has been sitting around for a while.
Dont know how/where you connected the car battery to the starter, but it would pay to check that the selonoid is working correctly and that the connections to it are good. Look for overheating when cranking. It should not get hot from short operation. If the voltage is dropping to 8 volts measured at the battery, you can be pretty much assured that the selenoid is ok. the starter working ok from car battery jumper onto the bikes battery would also tend to indicate that it is working ok.
I would suggest that you have a phone around for an old school auto sparky with a workshop in your area that has a startermotor tester rig that can measure the current draw under load/ test the starter for you. Cheapest way to proceed forward.
Happy to talk to you further bout the problem.
Thanks for using FixYa. A vote from you for the quality of my solution makes answering worthwhile. Cheers mate. Good luck
Posted on Jun 19, 2010
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