2007 triumph ST1050 ABS

[taffurelli40]

2007 Triumph Sprint ST1050 ABS
So out today for a little ride when the bike died. Speedometer and rev counter stuck at the last speed but there was no life in the bike at all. I removed the seat and checked the 30amp fuse which had blown. Once I changed this is just blew straight away.
Does anyone have any ideas please?

Thank you in advance

Edited by taffurelli40 on Thursday 13th August 15:41

[BMbler]

don't have a Triumph, but for a 30A fuse to blow repeatedly it's got to be alternator and/or wiring to it, older style bikes had 20A fuses to the ignition, these days they are even smaller all the way round.
All you can do is to find those wires, split, follow up and find what's melted where.

[taffurelli40]

Thank you. Someone has said it’s more than likely the regulated/rectifier as I looked at the main loom/harness and can’t see and breaks

[carinaman]

There are videos on YouTube on how to test motorcycle regulators with a multimeter.

[Biker9090]

I know from experience that I nearly threw mine in the river.....

On a (slightly) more serious note, they are well known for the usual stty Triumph stator/reg rec/ charging cable issues.

[taffurelli40]

I really appreciate you commenting and will start at the regulator/rectifier and see where it leads me

[carinaman]

If you check the Triumph specific Internet forums the issues are well known and there's a MoSFET upgrade.

[TwoStrokeNut]

My identical trumpet failed in a similar fashion from new.

It was a wiring loom issue shorting it all out. Lovely.

[taffurelli40]

I have eliminated the loom as the cause due to a test that I carried out.
If anyone has the same issue with the main 30amp fuse blowing then try this first before spending ££££ on a loom.
Disconnect the rectifier which isn’t the easiest to get to.
It’s located on the right side fairing, but you need to remove the fairing, seat and fuel tank.
Disconnect the 2 plug and play connections to the rectifier.
Put a new 30amp fuse in and turn the ignition and kill switch to the on position. If dials zero and light up and fuse stays in tacked then this point to the rectifier being the cause.
If however you turn the ignition on with the rectifier removed and the fuse blows then this cause is the loom shorting somewhere.

[TwoStrokeNut]

Great news.

[taffurelli40]

It’s saved me £637 for a new loom from the dealer and £135ph labour…
Bought a new rectifier from eBay brand new for £27.

[TwoStrokeNut]

taffurelli40 said:

It s saved me £637 for a new loom from the dealer and £135ph labour
Bought a new rectifier from eBay brand new for £27.

That's great, as ever, accurate diagnosis is the obviously the key.

Sadly my experience was somewhat different. After running in, mine failed during a spirited run down the Stelvio pass. Total power cut, 30amp replacement fuse blowing instantly, recovery truck suntan.

It was recovered to a Trumpet dealer in Bolzano, who went through a similar process unplugging units and determined that it was the air solenoid. That was replaced and the bike got me back home.

A couple of weeks later, the same thing happened again, recovered to a London dealer who on my insistence stripped the whole bike down to examine the whole loom and found a number of chaffed leads due to incorrect loom placement from the factory. They were probably moved slightly in Bolzano, which hid the actual problem for a short while.

The loom was repaired and the bike was reliable thereafter.

[taffurelli40]

I was sat on the Brenzett Road in Kent on my own for hours with no tools to even take the seat off as these are 6mm Allen keys (now replaced with quick release).
Thankfully my son was nearby working so loaded it into his new 26 plate transit custom… tight fit was not the word..
Bike stripped and fault found so all worked out in the end.

If your ever in the Ashford/Maidstone area give me a shout and we’ll meet up for a blast…

See who brakes down first lol

[TwoStrokeNut]

taffurelli40 said:

I was sat on the Brenzett Road in Kent on my own for hours with no tools to even take the seat off as these are 6mm Allen keys (now replaced with quick release).
Thankfully my son was nearby working so loaded it into his new 26 plate transit custom tight fit was not the word..
Bike stripped and fault found so all worked out in the end.

If your ever in the Ashford/Maidstone area give me a shout and we ll meet up for a blast

See who brakes down first lol

Will do mate, enjoy the best of all the sports tourers