Triumph Hinckley Bonny

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Re: Triumph Hinckley Bonny

Post by Headcoats »

Image

Image

99% done now :smt035

Still need a front mudguard but can MOT it without one
One Bar end mirror
New Number plate

Will need a shakedown run to check the carburation

And no the Baby isn't in the pram in the garage :smt005


It's got Triumph Steve McQueen handlebar grips yer know :smt005
Last edited by Headcoats on Fri Dec 29, 2017 8:02 pm, edited 2 times in total.
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Maiden run today with mixed results :smt017

Carburation seems to be the issue :smt021 The banging it is making on the overrun sounds like a night in Beirut :shock: plus as I get the revs on I'm not sure if it's getting a bit choked at the top end or the rev limiter is making an appearance ?

It has no Tacho so not sure what revs I'm at

A trip to the dyno is what I need to do to get a clearer picture of what's going on :smt035

I got all my jetting suggestions off the Triumph site for my setup so should be in the ball park

Got an oil leak out the gear shift shaft too but it is a Triumph :smt005

Nice comfy ride though and wasn't expecting it to pull stumps out of the ground but it showed me what a pearl of an engine the YPVS motor is :smt004
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Well put the Thruxton needles in and is a lot better
These make it run richer so must have been a tad lean

Still not sure what's happening at the top end so a dyno run will give some prognosis I guess

Going in the right direction now though I hope

Got a mirror at last too :shock:

Changed the leaking gearshaft seal too which came out easier than I expected as I expected a fight


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Re: Triumph Hinckley Bonny

Post by silverstrom »

Your bike looks great. Nice and clean at the back end now.

The stock rear fenders really are an ugly bit of kit. First thing gone on my Thruxton.

Are you going to keep those shocks or did you have something else in mind. That's the decision I'm trying to make right now. I'm thinking these http://www.newthruxton.com/html/ikon_shocks.html" onclick="window.open(this.href);return false; Not sure I want to spend $1k for the Ohlins 36PL.
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Will keep the shocks for now
They are Thruxton shocks I have which are longer than the stock Bonneville ones

Got the Thruxton fork internals too for a bit of preload but at the moment I haven't turned the preload up so they are set to the lowest setting at the moment .

Just want to get it running clean now :smt010
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Image

Image

:smt003 :smt003 :smt003
Last edited by Headcoats on Sat Sep 23, 2017 5:41 pm, edited 1 time in total.
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Re: Triumph Hinckley Bonny

Post by two-stroke-brit »

start em young EH!
350LC,Athena 392 big bore,stock porting,swiss cheese air box,stock reeds,spec11 pipes.(now TSA big bore pipes)
She might not be pretty but she will always be a fun ride


1982 YAMA RD350LC
98KDX 220R
1967 TRIUMPH TIGER
2001 TRIUMPH TT600
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Just got the ignition back fro TTP who have given it a better ignition map and increased the rev limiter from 7400rpm to 8500 :smt002
Not re fitted it yet so can't comment
Got a larger front sprocket too, so have gone from a 17 tooth to an 18 which all the later retro's are running at

Might crack the Ton yet :smt005
Still got to get it down the dyno :smt011 ...........
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Fitted the modded ignition box took it out for a quick spin and the butt dyno says no difference :smt005

Just put bigger front sprocket on (17 tooth to 18) that will probably make more of a difference to riding

Still got to get it on the dyno ...........
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Image

Image

Went to you know where today :smt005

My LC puts out 68 BHP on the same dyno ! (albeit it being heavily tuned)
Last edited by Headcoats on Fri Dec 29, 2017 8:05 pm, edited 2 times in total.
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Re: Triumph Hinckley Bonny

Post by Headcoats »

Image

Image
Front mudguard now fitted :smt003
Last edited by Headcoats on Fri Dec 29, 2017 8:06 pm, edited 2 times in total.
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Re: Triumph Hinckley Bonny

Post by Headcoats »

http://www.gizmag.com/triumph-motorcycl ... 6/pictures" onclick="window.open(this.href);return false;

:smt007 :smt007 :smt007 :smt007 :smt007 :smt007
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Re: Triumph Hinckley Bonny

Post by T.RexRacing »

The Thruxton R is interesting. A 1200CC parallel twin.


BTW did you rejet after ignition tuning? Fuel curve looks pretty rough. CV carbs tune backward from other carbs. Start with the main and work down to the pilot.
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Re: Triumph Hinckley Bonny

Post by Headcoats »

TTP who do the ignition mods said to refit the standard needle and go up to 140 main jets as that is what they got the best results from after hours of testing on the 790cc engine.

I did that but haven't had chance to get to the dyno yet :smt010
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Re: Triumph Hinckley Bonny

Post by T.RexRacing »

I thought that chart was yours.
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