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Discussion Starter · #1 ·
well went down to the local dragstrip today to see what the thrux will do on my first pass i did 13.756 @94.34 mph 60 ft of 2.091. i ended up geting down to a 12.929 @ 100.446mph and 60ft of 1.916. :D

So i must say i was happy with it all i did was change shift points and launch rpms. Now it is time to get heavier clutch springs as it was slipping a bit and tune it with the velocity stacks instead of the fillters.Maybe lose some weight that should help to:)

It was good day racing against jap bikes had most of them over the 60ft and nearing the 1/8th they just zing by. Glad i beat an harley though it was not a bad run between us both as it is putting out near the same h.p


The mods are predators,39mm fcr, ark and thunder bike cams bike is putting down 68,6 hp and 51.83 ft of torque.
 

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I'll be doing the 1/4 mile drag strip tomorrow at North Weald, Essex, England. I'll post my best time if it's not too embarrassing!!!
Looking forward to seeing what you do.Your bike and mine should run close to the same.Hope you dont flip that pretty bike .I have a hard time getting mine to leave the line with out the front wheel in my face lol.
 

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Discussion Starter · #6 ·
yeah i was mainly watching the light trying to get a decent reaction time. just bought the revs up a bit don't ask me what it was then just slipped the clutch out the front wheel would just lift off the ground a little bit nothing to wild.

robnobrakes that is a good time what were your 60ft times?
What have you done to the bike?
 

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yeah i was mainly watching the light trying to get a decent reaction time. just bought the revs up a bit don't ask me what it was then just slipped the clutch out the front wheel would just lift off the ground a little bit nothing to wild.

robnobrakes that is a good time what were your 60ft times?
What have you done to the bike?
No 60 ft times taken.

What have I done to my Thruxton? How long have you got LOL...

Mechanical Specification:

Wiseco forged aluminium high compression pistons and cast iron liners. Bore 92mm +6mm oversize, Stroke 68mm. Displacement: 904cc
Oversize inlet valves (+2mm) and exhaust valves (plus 1.5mm).
Camshafts re-profiled for higher lift and longer duration.
Crankcase breather size increased from 6mm to 13mm diameter.
Keihin FCR 39mm flat-slide race carburettors with open velocity stacks, controlled by ¼ turn quick action throttle. (Carburettors supplied by BR Special Tuning, Wales)
Billet alloy intake manifolds (supplied by British Customs, USA)
Cylinder head gas flowed, ported and skimmed (10.8 to 1)
Fly wheel balanced and lightened 440g.
Procom CDI (Increases rev limit and advances ignition timing).
Heavy duty (+10%) clutch springs.
Predator stainless steel race exhausts. (supplied by British Customs, USA.)
Pretech 6-pot billet alloy race spec caliper (supplied by Pretech Precision Engineering, Reading.)
Brembo radial master cylinder.
EBC Prolite fully floating front disc (Road Spec).
EBC HH Sintered Pads (Road Spec).
Norman Hyde fork brace.
Norman Hyde steering damper.
Ikon adjustable rear suspension.
Drive sprockets changed from 18/43 to 19/41.
Titanium nuts and bolts for engine casings, discs, sprocket, caliper’s etc. (Supplied by Pro Bolt)
Avon Azaro tyres (Road): 110x80x18 front, 140x80x17.
Second set of Thruxton rims fitted with Avon 110x80x18 AM22 &140x80x17 AM 23 race tyres for track day use.
EBC Prolite fully floating race spec front disc for track day use.
Bendix MRR race pads for track day use.
Scottoiler automatic chain lubrication.

Cosmetic Specification:

Handmade ‘Slippery Sam’ polished aluminium fuel tank. (Supplied by T A Baker Tanks, Wales.)
Alloy Monza fuel cap.
CNC billet alloy ‘race’ footpegs. (Supplied by Oberon Performance)
Handmade aluminium number plates. (Supplied by CW Classic)
Homemade hand-cut ‘race’ numbers.
Homemade aluminium fly screen.
Rear mudguard shortened,reshaped and resprayed.
Homemade aluminium rear light and number plate mounting.
Rizoma billet alloy front brake master cylinder.
Bonneville T100 black & grey speedometer and tachometer.
Drilled and polished gear lever and rear brake lever.
Homemade aluminium chain guard at front sprocket.
Stock seat unit modified to fit with the fuel tank.
Polished alloy seat cowl. (Supplied by The Tank Shop, Scotland.)
Polished alloy front mudguard. (Supplied by The Tank Shop, Scotland.)
Billet aluminium indicator lights. (Supplied by Motrax)
Billet aluminium LED rear light. (Supplied by Motrax)
Billet aluminium bar end mirror. (Supplied by Oberon Performance)
Stainless steel headlamp guard.
Circa 1959 cherished number plate.

Performance Data (rolling road tested @ rear wheel):

Stock motor: 52.0bhp, 41 ft/lbs torque.
Tuned motor: 88.4bhp, 65.5 ft/lbs (open velocity stacks and 150 main jets)
Kerb Weight: 211 kg wet (with 4 gallons of fuel & 4 litre oil).
Dry weight approximately 193kg. Triumph claim 205kg dry stock trim.
Standing Quarter Mile (At North Weald RWYB 10 May 2009) 12.69 seconds: 111mph.
 
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