Hi,
I probably/may need someone to engineer my Primary drive on the Norton-imp. It involves;
Preferred option If use my Commando Barnett plates Clutch triplex drive
1) Making a Crankshaft adapter, for the triplex sprocket to fit on the 930cc crankshaft, plus adding a small flywheel, Geoff Monty style; around 4-6 lbs in weight for a 4 cylinder motorcycle of this capacity;
2) Fixing a duralimin plate to the clutch end of the Imp engine to support an Out-rigger bearing, the Barnett plated/Commando clutch and possibly allowing for some small adjustment mechanism.
3) Using either (A) countershaft/jack shaft mechanism to bring the drive in line with the rear wheel or (B) using a strengthened extended gearbox mainshaft supported by again the outrigger bearing method to line up the drive to the rear wheel.
Either method (A) or (B) would have to incorporate a drive for the Talbot 930 water-pump as I would prefer to leave/make everything mechanical.
Then a Primary drive cover will have to be fabricated.
Just as an aside I have seen this machine in situation, somewhere in the darkest depths of England.
The Frank vague, Brough Austin engined ex- Hubert Chantrey machine, from the Bodmin find. AKA, Brough Superior 750cc BS4 costing the new owner £100,000 in rebuild time and materials and reputedly to be worth 7 figures when finished. This is the machine that George Brough was photographed on. It is one of nine out of ten manufactured that still exist!
The new owner is Russian and the bike will be exported when finished.
Although his work is first class and of fantastic quality @ £40 an hour I cannot afford his build time, plus the transportation of all my stuff and he is booked up till mid-Summer anyway!
Any leads followed!
Cheers
John H
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I used to get charged …
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Hi Colin I can put the eng…
Hi Colin
I can put the engine in myself if necessary, apparently a Laser tool now aids in the process, both (A) & (B) methods have been used and both bikes have done over 250,000 miles with no real problems!
The drive path to the back wheel has to be spot on though and there isn't not much room for error!
Additionally an enclosed oil-bath chain-case for the rear chain would be a good mod too.
Having had/ still have some BMW's shaft drive is such a good upgrade in so many ways, safety and maintenance and virtually eliminates worry.
If I was earning top dollar it would be no problem, but sadly my earnings since S/E are less than a quarter of what I once earned!
Cheers
John H
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Previously John Hall wrote…
Previously John Hall wrote:
Hi Colin
I can put the engine in myself if necessary, apparently a Laser tool now aids in the process, both (A) & (B) methods have been used and both bikes have done over 250,000 miles with no real problems!
The drive path to the back wheel has to be spot on though and there isn't not much for error!
Additionally an enclosed oil-bath chain-case for the rear chain would be a good mod too.
Having had/ still have some BMW's shaft drive is such a good upgrade in so many ways, safety and maintenance and virtually eliminates worry.
If I was earning top dollar it would be no problem, but sadly my earnings since S/E are less than a quarter of what I once earned!
Cheers
John H
hello, what you need is some cash first before any engineer ???? and I think you have too many irons in the fire for one man to tackle yours Anna J
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Oh! Don't you go winding…
Oh! Don't you go winding me up!
Plans are afoot!
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Hi, I built a sidecar outf…
Hi, I built a sidecar outfit some 40 years ago with a SAAB engine. Same problems to overcome I did it as you are thinking of, if you live near Kings Lynn, pop round for a chat. I still have a lathe and universal mill. I might even have parts you can find a use for. I machined a lot of parts for the Large Hadron Collider a few years ago, so small jobs are not so bad. There were lots of Imp engined outfits years ago, you normally have to offset to the right otherwise you need a counter-shaft to align the chain. I hope you succeed, message if you want any help. Best regards, Paul
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Previously paul_reynolds w…
Previously paul_reynolds wrote:
Hi, I built a sidecar outfit some 40 years ago with a SAAB engine. Same problems to overcome I did it as you are thinking of, if you live near Kings Lynn, pop round for a chat. I still have a lathe and universal mill. I might even have parts you can find a use for. I machined a lot of parts for the Large Hadron Collider a few years ago, so small jobs are not so bad. There were lots of Imp engined outfits years ago, you normally have to offset to the right otherwise you need a counter-shaft to align the chain. I hope you succeed, message if you want any help. Best regards, Paul
Paul,
I have sent you a Private Message!
Cheers
John Hall
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I used to get charged £35 an hour for labour when I had my Sprint ST serviced more than 13 years ago, so £40 an hour doesn't seem so bad from that perspective. The best should do the best job in the best time and so be cheaper in the long run. But it's still dear and I sympathise, maybe you could try negotiating a deal since you can specify the work, rather than expecting someone to take a pile of stuff and work it out for themselves?