RGB Puma Weslake.

Classic and Vintage outfit discussion, including Where are they now, the people hunter.
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bill
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Re: RGB Puma Weslake.

Unread postby bill » Mon Dec 31, 2007 8:38 pm

it is Ian

point is I'm pretty sure you can run a 350 with a banshee motor very cheap

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Re: RGB Puma Weslake.

Unread postby steve-e » Mon Dec 31, 2007 8:40 pm

sorry about that, it's the first one I've split on the new version, will get it right next time :D
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Bill Lymburn
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Re: RGB Puma Weslake.

Unread postby Bill Lymburn » Fri Oct 11, 2013 4:51 pm

Could I ask what kind of gearbox is fitted to that beautiful piece of craftsmanship...??
"A promise made is a debt unpaid".

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ianw
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Re: RGB Puma Weslake.

Unread postby ianw » Mon Oct 14, 2013 7:04 pm

Image

Hi Bill, the engine would eat Quaife gear clusters so Pete Davies at Puma Engineering suggested making a gearbox using a Harley Davidson racing cluster. So I bought an Andrews Gears close ratio racing cluster. The gears & shafts being a lot larger than the AMC / Quaife items & Pete recon'd that the gears would stand up to the power pulses better than the Quaife one's. The Andrews gears & shafts run in needle roller bearings unlike the Quaife one's running in bronze bushes.
Pete then set about machining me a gearbox case out of a billet of Aluminum. He machined it to have the same mounting measurements as a Norton AMC box. He had to cut the length of the mainshaft & make an adapter to suit the Triumph 4 spring clutch hub.
I make it all sound so simple but then Pete is the best Engineer I have ever had the privilege to meet. You should see the Top Fuel Dragster engines he makes. Billet crankcases machined from a block of Aluminum measuring 900mm x 400mm x 400mm, or the Top Fuel crankshafts he makes from a lump of billet steel round bar, or the billet cylinder heads.
Over the years he had also machined me a Weslake head ( Puma ) out of a billet & also a drive side crankcase from a billet.
The head he machined, 20 years ago, he fitted Suzuki stainless steel valves in, I was the first to use these, now a day's I think the majority of riders using Weslake / Nourish engines run them, or they should do!

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Bill Lymburn
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Re: RGB Puma Weslake.

Unread postby Bill Lymburn » Tue Oct 15, 2013 2:38 pm

Hi! Ian, thanks for your most elaborate reply....I didn't think it could be any old ordinary gearbox
considering the work it had to do, but then I didn't realize your resourcefulness, albeit through
evolution or revolution....What a state of the art, '70's style machine, you have created....I'd love
to see it race with the CRMC or better still, with all that torque, compete with F2s...thanks for your
fascinating reply...Bill L. Ps My first outfit in 1971 was the original old Triumph Rickman conversion,
lightyears from your creation...
"A promise made is a debt unpaid".

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Re: RGB Puma Weslake.

Unread postby steve-e » Tue Oct 15, 2013 6:02 pm

I think we need a lot more photos Ian :D It's a work of art :thumbup:
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Re: RGB Puma Weslake.

Unread postby ianw » Tue Oct 15, 2013 6:40 pm

I'll put up what I've got Steve.
Cheers.

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Re: RGB Puma Weslake.

Unread postby ianw » Tue Oct 15, 2013 7:10 pm

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Re: RGB Puma Weslake.

Unread postby steve-e » Tue Oct 15, 2013 8:13 pm

That really is glorious. :notworthy: But having seen your other projects what else would we expect ;)
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xxseanxx35
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Re: RGB Puma Weslake.

Unread postby xxseanxx35 » Tue Oct 15, 2013 9:19 pm

wow what a beauty!!! My pops loves his weslakes this be like a wet dream for him lol
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Re: RGB Puma Weslake.

Unread postby chick marsh » Tue Oct 15, 2013 10:32 pm

That is amazing :notworthy: :notworthy: :notworthy:

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Re: RGB Puma Weslake.

Unread postby cargers » Wed Oct 16, 2013 11:46 pm

Ian
I seem to remember an earlier RGB that you were running at Aintree with fuel injection fitted. Have you got any pictures of that outfit?
Also I can confirm just how well engineered the lay down engine outfit was as I was competing at the Thundersprint a few years back when you were trying to start the bike on the rollers. I think the compression ratio must have been fairly high as it just wanted to jump off the rollers when you dropped the clutch. I know as I was sitting on the back trying to keep the wheel in contact with the rollers.
Ian

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ianw
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Re: RGB Puma Weslake.

Unread postby ianw » Thu Oct 17, 2013 9:52 am

Hi Ian, yes I do remember your help at the Thundersprint :D
No I'm sorry I don't have any pics of the bike with the fuel injection fitted.
That time at Aintree was with the new chassis that Colin Jacobs built me with the same Puma engine but mounted upright.
The fuel injection was a constant feed mechanical system made by Hilborn Fuel Injection of the USA.
All the Top Fuel Dragsters run their systems to this day, they became available back in 1948.
The system used a mechanical fuel pump driven off the exhaust cam & worked via a series of relief valves & check valves with round jets in them, fool proof once set up. Rob Holden was over here racing solos & he had run a Hilborn system on a Ducati back in New Zealand & he helped me so much with my system, sadly, he was killed at the TT.
The ACU Technical Committee banned my system when they brought in a blanket ban on fuel injection in F2, bit ironic really as a few years later they allowed fuel injection in. There were two F2 racers on the Technical Committee back then!
http://www.hilborninjection.com/

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Re: RGB Puma Weslake.

Unread postby Big Tim » Thu Oct 17, 2013 10:01 am

Aintree, April 1992 programme. Possibly the meeting in question ? I remember you being there, Ian. Running in, I think ?
Attachments
Aintree April 1992 (1).jpg

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Re: RGB Puma Weslake.

Unread postby ianw » Thu Oct 17, 2013 11:10 am

Thanks Tim, that's showing my age!!!!!!! I think you are right, Ithink we were running in the new Puma Nicasil Cylinder?

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