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Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.

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Old 11-09-2012, 01:50 PM   #11 (permalink)
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Quote:
Originally Posted by timpee77 View Post
Guy's advice is spot on.

Check you don't have a spark by pulling both the plugs, grounding one of them and turning it over. If you don't have spark then do as stated above. If you don't have a mate with a similar bike you'll need to start testing and replacing bits but its really likely it'll be pickup coil, located under the clutch side cover or the coil which is tucked up under the front of your tank. In the case that its your CDI then you're better off getting an aftermarket one from ProCom than paying the crazy prices that triumph want for new genuine one.

I had a similar prob with my 05 T100 and it ended up being the pickup coil.


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I don't think that works unless you ground both plugs, I can't remember the exact expaination for this but Forchetto discussed it way back and it made sense.
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Old 11-09-2012, 02:13 PM   #12 (permalink)
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Originally Posted by GDCobra View Post
I don't think that works unless you ground both plugs, I can't remember the exact expaination for this but Forchetto discussed it way back and it made sense.
On the 360 engines the coil secondary is double-ended and "floating". Neither end is connected to ground. It's called a "wasted spark" system.

The voltage leaves one secondary coil terminal, jumps the first plug gap then travels through the metal of the cylinder head, jumps the gap on the other plug and returns to the remaining coil terminal.

Don't operate the ignition system unless both plugs are grounded, you can burn out the coil windings like that.


Last edited by Forchetto; 11-09-2012 at 02:18 PM.
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Old 11-09-2012, 03:03 PM   #13 (permalink)
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I know it can't be the pick up coil as my dealer stated to me "they very rarely ever go bad".
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Old 11-09-2012, 03:31 PM   #14 (permalink)
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I know it can't be the pick up coil as my dealer stated to me "they very rarely ever go bad".
My wife's Peugeot has got through four ignition coil packs so far. The Net is full of Peugeot forums moaning about the problem and yet three different main dealers reckon they've never heard of the problem...wankers.

The funny thing is that all of them have the things in stock for immediate delivery and fitting...my question as to why they should have readily available spares for a part that never fails draws vacant looks from the brain-dead oafs.

Last edited by Forchetto; 11-09-2012 at 03:35 PM.
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Old 11-09-2012, 06:56 PM   #15 (permalink)
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If it does turn out to be the coil here's a source for a reasonably priced replacement:
http://www.motobins.co.uk/displayfin...?q=70506&go=GO
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Old 11-10-2012, 07:51 AM   #16 (permalink)
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Thanks, everyone. I have a friend coming over today with a meter and we'll see what we can find out.

The igniter looks fine with no witness marks on that or the seat.
The battery is out being charged. What's the betting it starts right up when I put it back?
It's cold today, whereas when it broke down the engine was hot from being stuck in traffic.

The pick-up coil - I had a look at the service manual, and it looks like I need to drain the oil and take off the right-hand side engine cover, yes? In which case it'll have to be done by a garage as I don't have the disposal facilities.
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Old 11-10-2012, 08:30 AM   #17 (permalink)
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... it looks like I need to drain the oil and take off the right-hand side engine cover, yes? In which case it'll have to be done by a garage as I don't have the disposal facilities.
I don't think you have to drain the oil to open up the RHS of the engine, if the bike is on the side stand the oil all runs over to the clutch side, you probably will need a new gasket though and some sealer for where the wire and gromet runs throgh the case.
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Old 11-10-2012, 03:16 PM   #18 (permalink)
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where abouts in london are you?
there is a place called the oval motorcycle centre it off workshop space tools and advice to do your own servicing with guidance from there technicians.
http://www.ovalmotorcyclecentre.co.uk/web/index.php
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Old 11-10-2012, 05:42 PM   #19 (permalink)
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Wow, never heard about that place before. That sounds cool.

Now then, should I buy a Moto Guzzi v7 Special? They are on interest free credit at the moment, and do look nice.
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Old 11-10-2012, 10:39 PM   #20 (permalink)
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Triumphs are so much sexier than Moto Guzzis!
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