Classic Triumph Bonneville

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MingtheMerciless
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Re: Classic Triumph Bonneville

Post by MingtheMerciless »

Mr. Dazzle wrote: Thu Aug 19, 2021 10:54 am
KungFooBob wrote: Thu Aug 19, 2021 10:49 am Have you tried re-routing power through the main deflector?
The core ejection system is the least reliable thing on the whole ship isn't it? Why can't they make it work as well as the lights and gravity? Those never fail.
Actually I think you'll find it's the AE35 Antenna Control Unit that is the most unreliable part on ANY starship.
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JackyJoll
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Re: Classic Triumph Bonneville

Post by JackyJoll »

Is there a local branch of the Vintage Motorcycle Club or similar?

You might benefit from some old fart seeing it.
Nidge
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Re: Classic Triumph Bonneville

Post by Nidge »

There’s an active branch of the TOMCC in MK
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

There is, I've seen/heard em riding past my house :D
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Re: Classic Triumph Bonneville

Post by JackyJoll »

Mr. Dazzle wrote: Thu Aug 19, 2021 6:00 pm There is, I've seen/heard em riding past my house :D
At least some of them must be able to start a Triumph!
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Re: Classic Triumph Bonneville

Post by David »

Taipan wrote: Thu Aug 19, 2021 4:28 pm Get Derek the Badger to tow start you with his KX500... :think:
Bugger that....borrow his rollers....
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Re: Classic Triumph Bonneville

Post by JackyJoll »

David wrote: Thu Aug 19, 2021 8:03 pm
Bugger that....borrow his rollers....
And his setting lotion.
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Re: Classic Triumph Bonneville

Post by Nidge »

JackyJoll wrote: Thu Aug 19, 2021 8:18 pm
David wrote: Thu Aug 19, 2021 8:03 pm
Bugger that....borrow his rollers....
And his setting lotion.
Pretty sure he’s all about the sun tan lotion still
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Re: Classic Triumph Bonneville

Post by A_morti »

Taipan wrote: Thu Aug 19, 2021 4:28 pm Get Derek the Badger to tow start you with his KX500... :think:
Easy now...
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

Guy picked it up today. He was spannering for BSB this weekend so he couldn't get here any earlier.

He tried it and then announced "there's something fundamentally not right there". Took the plugs out, kicked it over a few times with the clutch pulled etc. and sucked his teeth a bit. "Gonna need to get it back to the workshop and have a look".

So yeah, not just being a fanny :lol:
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Re: Classic Triumph Bonneville

Post by KungFooBob »

He was just sparing your blushes.

He'll also make more money if he 'fixes' it :)
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Re: Classic Triumph Bonneville

Post by Rockburner »

Mr. Dazzle wrote: Tue Aug 24, 2021 4:13 pm Guy picked it up today. He was spannering for BSB this weekend so he couldn't get here any earlier.

He tried it and then announced "there's something fundamentally not right there". Took the plugs out, kicked it over a few times with the clutch pulled etc. and sucked his teeth a bit. "Gonna need to get it back to the workshop and have a look".

So yeah, not just being a fanny :lol:
What's the betting the crank is in backwards or something similarly obvious, but not. :D :D


In fact - who wants to take odds on any of these:
  • Reversed Crank
    Cam timing out by over 90 degrees
    Conrod not straight
    Wrong Rings
    Wrong Pistons
    Wrong Valves
    .....

;) :D
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

Bottom end hasn't been apart, so that's a few off :D

I'm betting either gearbox is bent somehow, or the head is. When the head was off it turned over a peice of piss, whereas now it doesn't. I don't think it is and I checked all the gaps carefully....but it doesn't turn over now and it did before.

The fact you can turn it over quite easily via the crank pokes a hole in that theory.
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

KungFooBob wrote: Tue Aug 24, 2021 4:14 pm He was just sparing your blushes.

He'll also make more money if he 'fixes' it :)
He's deffo had more pies than me and the kicker held his weight plugs out too :D
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Re: Classic Triumph Bonneville

Post by JackyJoll »

I saw W.C Fields in a film, helping a stranger with a broken down car, by suggesting: “Is it the wheelbase?”
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

I'm inclined to agree....the other option is to take it all apart and put it back together again. But I don't know what (ir anything) I did wrong the first time :D
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Re: Classic Triumph Bonneville

Post by JackyJoll »

Have we already (through rational deduction, Watson) eliminated lumpy 11:1 pistons contacting the head or the valves?
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Re: Classic Triumph Bonneville

Post by Count Steer »

JackyJoll wrote: Wed Aug 25, 2021 10:18 am Have we already (through rational deduction, Watson) eliminated lumpy 11:1 pistons contacting the head or the valves?
I think that was eliminated by turning it over at the crank.
Doubt is not a pleasant condition.
But certainty is an absurd one
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Re: Classic Triumph Bonneville

Post by Mr. Dazzle »

Yeah, unless the valves are bent now and that's why its hard to turn!

It has compression and seems to turn around smoothly enough via "alternative methods".

Thinking back, I reckon the problem first cropped up when I torqued the head down. Prior to that it was dead easy to turn over, afterwards it became more difficult. I had the bolts just past finger tight while putting the pushrods in, then I torqued them down tight. Everything moves maybe ~0.5mm at that point. But 0.05mm is enough to make things stick if it's in the wrong place.

At the time I assumed it was cause you're now properly moving the valve springs, the rockers have load on them (from said springs) and the pistons are actually sealing fully. Maybe not though.

I can't see what torquing the head would do, unless something was binding as Iccy says. Only the rockers could do that though think....which is why I said maybe the shafts are bent. But they're brand new...

Other option is that the head itself is now bent. But I measured the gaps/PRT crush carefully. I've also now got what are essentially undersized seals in the PRT tubes, so if anything I'd expect leaky PRTs not a bent head.

I also don't think its anything to do with me taking the primary drive apart. The problem was there before I started poking around in the primary, AFAICT.
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Re: Classic Triumph Bonneville

Post by David »

Has he told you what you buggered up yet?