Author Topic: POMEROYS RACE WINNING BULTACO  (Read 101656 times)

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Offline KB171

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Re: POMEROYS RACE WINNING BULTACO
« Reply #15 on: February 05, 2011, 02:38:18 PM »
This was in MXA 3rd 1974.

firko

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Re: POMEROYS RACE WINNING BULTACO
« Reply #16 on: February 05, 2011, 04:00:34 PM »
We were sitting around chatting with Jim Pomeroy at Barrabool and I seem to remember him telling us that the Spanish GP winning bike had two histories, the official story that it was a factory prepped stocker and the real story that it had been prepared by his Washington Bultaco dealer sponsor. He reckoned it ran rings around the factory bikes and was much lighter. He didn't mention anything about a CMS frame but it wouldn't be out of the picture.

Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #17 on: February 05, 2011, 04:10:29 PM »
Thanks KB, Firko exactly the stuff I'm looking for. Jerry

Offline Stan S

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Re: POMEROYS RACE WINNING BULTACO
« Reply #18 on: February 05, 2011, 06:05:25 PM »
Jerry, I got this stuff out of my Pursang Story book that I got at Barrabool when Jim was there. Sorry I can't find a good close up shot of his bike.

Stan.





Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #19 on: February 05, 2011, 10:16:28 PM »
Great stuff Stan much appreciated. Cheers Jerry

Offline JC

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Re: POMEROYS RACE WINNING BULTACO
« Reply #20 on: February 06, 2011, 11:42:43 AM »
Searched everywhere for photo's of Jim Pomeroys 1973 250cc Spanish Grand Prix winning bike with zero success. Does anybody know if it's in someones collection or museum somewhere? I think it was modified to the extent it had opaque plastic guards, shoulderless rims, maybe a different rear hub. I also believe it had a taller seat (remember Jim was tall) and maybe a CMS frame according to Geoff Morris at GMC (thanks Geoff)and he was #26 and yes I'm probably going to try to build a replica of the bike. Perhaps a true Pomeroy replica. If anybody can help I would much appreciate it. Cheers Jerry

Jerry, that'll be a great project. For such a history making bike, there's been little attention paid to it in the press. I've never seen a feature on it & only ever seen a handful of pics of it in action. I don't recall any still shots.  I suspect that's because it was fairly close to a stocker. The press of the day was infatuated w the trick factory bikes & gave them the air-play, largely passing over the production based bikes.

Probably, he had a few modifed bits from his american sponsor, like perhaps the barrel, pipe & carb. Having said that, I have a Cycle mag article somewhere where they actually measured the barrel of Pomeroy's later Superbowl bike & compared it to a std barrel. His barrel was carefully prep'd w 'clean & match' (they showed pics as I recall) but was w'in prod'n tolerance of stock dimensions. (I'll have to try & dig it out)

There was of course no 'works bultaco' at the time. That came after his initial success & even then was hardly radical - still prod'n based. All the pics I've seen of the 73 GP winning bike show a fairly stock prod'n Mk6, except for the changes you mention above. It definitely had the mk7 style rear hub, telesco shocks (Mk7 style), ridgeless front rim but ridged rear rim, diff guards that look opaque (as you say) & I think y're right that it had extra padding in the seat.

It may also have had a chr-mo frame, but I highly doubt it was a CMS job. (Yes I saw that claim from CMS back in the day too & was always skeptical). Bultaco was already moving in the lightweight direction, having had a fair bit of contact w Joe Bolgers success w his lightweight MK3/4 pursangs. And over the years I've seen a few Mk6 pursangs that came w the Mk7 rear hub, telesco shocks & even a cro-mo frame as original equipment - what you might call pre-prod'n Mk7s in Mk6 colours. My guess is that Pomeroy's bike was either one of those, or the first of those.

This all made it look considerably 'smarter' than a std Mk6. If you look at the pic on p26 of VMX#3 (Pomeroy is of course #26 in the middle, not #23 as captioned) even tho its hardly a close-up, the #23 & 18 Buls in the top left of the pic look somewhat 'dowdy' in comparison to #26.

If you can find pics of Pomeroy's bike at the 2nd Superbowl in 73 & even his big-bore for the 73 USGP, it still looks very similar to that 1st GP winning bike (tho it gained a ridgless rear rim by then). Oct73 MXA featured a shot of his rear hub & its clearly Mk7-style. 

I've just found a shot of his 73 superbowl bike & by then it also has a Mk7-style silenced pipe & used Konis. It definitly has extra padding in the seat too.  As a little aside, Pomeroy was jumping so far at that event that he was said to be "poking holes in the air". Likewise, at that 1st GP he was jumping so hi they had to shift the overhead banners out of the way!
« Last Edit: February 06, 2011, 05:41:45 PM by JC »

Offline Hoony

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Re: POMEROYS RACE WINNING BULTACO
« Reply #21 on: February 06, 2011, 01:05:32 PM »
Glad to have met him and seen him ride at Barrabool Classic Dirt ,  When i handed this to him to sign, he bellowed out to Peter Schone and crew,Look at this ,I told you I was skinny once,  ;)  Yep a Legend for sure.


how cool was Pomeroy at CD3 !

watching him ride was a highlight of that event for me, to see a bloke his age pulling mono's on that bike and having so much fun  because he Could and coming in after each ride with a big smile was awesome, he had a passion and was very approachable by all.

VMX misses you Jimbo. RIP

BUILD THE BIKE JERRY, great idea.
Long time Honda Fan, but all bike nut in general, Big Bore 2 stroke fan.    http://www.youtube.com/watch?v=XJoKP6MawYI
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2005 KTM 300EXC "The GruntMeister" ( I love that engine)

Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #22 on: February 06, 2011, 01:11:11 PM »
Thanks for making the time to add your comments JC. Telesco info particuarly useful. Hoony thanks for looking in too. Stay tuned it might take a while but I think it's gonna be worth it. What carby do you reckon? If it was prepared in the states surely it would have been a Mikuni! Love to know for sure! Thanks fella's Jerry

Offline KB171

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Re: POMEROYS RACE WINNING BULTACO
« Reply #23 on: February 06, 2011, 02:08:51 PM »
This pics from MXA november 1973, good shot of the rear ends  ;)

Offline KB171

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Re: POMEROYS RACE WINNING BULTACO
« Reply #24 on: February 06, 2011, 02:28:26 PM »
MXA FEB 1974

Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #25 on: February 06, 2011, 02:37:44 PM »
Thanks again KB. Confirms the rear brake stay. Other shot confirms taller seat and you interest in rear ends! Much appreciated. Cheers Jerry

firko

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Re: POMEROYS RACE WINNING BULTACO
« Reply #26 on: February 06, 2011, 04:11:40 PM »
Went for a swim at a fellow Kevlar old boys place this morning and the conversation got around to that bench race we had with Jim Pomeroy in Kamp Kevlar at CD4. A couple of the other lads took Bimbos "two different stories" to mean that the bike had a few trick bits he'd bought with him from the USA to personalise the bike rather than it being a tricked out lightweight rocket. We all doubt the magazine claim that it had a CMS frame or anything blatantly obvious as it's doubtful that Senor Bulto would have approved of such shenanigans. My bet is that it probably had a nicely tricked engine and perhaps a pipe done by the guy who'd been prepping his bikes back in Washington and a probably decent set of aftermarket shocks.


Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #27 on: February 06, 2011, 06:44:44 PM »
All sounds plausible to me Firko. If you look at the few available photos of the race weekend you may note that on race day some "Champion" spark plug decals had attached themselves to the fork legs! Found a place on the net and ordered some. Do you reckon he ran an Amal carby??? Thanks for the response. Cheers Jerry

Offline JC

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Re: POMEROYS RACE WINNING BULTACO
« Reply #28 on: February 06, 2011, 06:45:23 PM »
What carby do you reckon? If it was prepared in the states surely it would have been a Mikuni! Love to know for sure! Thanks fella's Jerry

No it wasn't prep'd in the states Jerry. You've set me on a bit of a mission, trolling thro old mags & here's what I can report w some degree of certainty (ie verified by more than 1 reputable source):

Tho Pomeroy was somewhat unknown at the time of that 1st GP in 73, he had already competed in the previous years TransAMA & come 2nd American to Lackey, & represented USA in the des nations also doing fairly well, so he had come to Bultaco's notice & they sent him to Europe for 2mths to train w Marcel Wiertz (belgian Bul importer & regular GP rider) & do some international pre-season races in Belgium. For that he used stock prod'n bikes.

By the time of the 1st GP he had impressed enough to get factory prep'd bikes (along w the likes of Vic Allan as far as I can tell), but was still a privateer surviving on pitiful start-money & all-but 'slumming it', not a works rider w a works bike (he had no contract until the belgian GP which was the 3rd GP I think).

Pomeroy's own description of his 1st GP bike: "Power range was really similar (to prod'n pursang), just had more horsepower. The diff I felt was the handling. It was lighter & it just changed a lot of the handling."  He goes on to say it used std front supension, but trick lightweight shocks that "might be standard next year". ie the telescos, tho he called them betors. He also says they were using an aluminium clutch (which gave him grief & slowed him in the 2nd moto) - no doubt the one that also became prod'n. Tires were 300/320 Barum front & 450 Metzler rear.

In another I'view, in answer to the question, "How special were the GP bultacos?" he replies, "They weren't too special compared to the suzukis & Maicos & eveything... I'm used to riding a standard bike & thats what I wanted. About all it had was a chro-mo frame made in the states. Its not very good, its made too light & it cracks everywhere. The bul factory frame is better-handling because it feels like it is stronger & doesn't flex as much, but that day I was patriotic (& used the US -made frame)... The factory wanted us to use an experimantal aliminuim clutch but it was slipping & I had a lot of trouble climbing hills"

So the US-made chro-mo frame sounds like tis true. Tom Rapp had already been using such a frame on his sponsored M68 in the US & Doug Schwerma (then trading as Cycle Services) was already selling such frames for pursangs & banditos & reportedly had been involved w the Bul riders in the TransAMA providing chro-mo frames (& Jimmy Odom in short track). Seems to me it would most likely have been 1 of his frames, not a CMS frame.

Now here's a bit of dubious dribble from my 'favourite' journo Frank Melling (who always sounded to me like a geriatric): "Pomeroys bike was 15lbs under the FIM min wt of 196lbs at the Spanish GP, thanks mainly to his lightweight US-made chro-mo frame". Yeh, right! To get a MK6 pursang that light would have taken mega $$s & a lot more than a lighter frame & I'm sure a factory that size would have spent a squillion $$ getting it that light for an untested/unproven rider at GP level. In yr dreams Frank!

Also found the article comparing Pomeroys barrel to an M103 barrell. It was from the bike he used at Daytona & Houston in 74. Inlet is somewhat larger, but the rest are very similar to std pursang.

Bike #57 above is probably one of his bkes used in US (where he regularly used #57), probably from the TransAMA. He's still using ridged akronts there, but note the Mk7 style chain guide - perhaps another pre-prod'n item.
« Last Edit: February 06, 2011, 06:55:28 PM by JC »

Offline jerry

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Re: POMEROYS RACE WINNING BULTACO
« Reply #29 on: February 06, 2011, 07:56:35 PM »
Thank you too JC! Great stuff, where did you get it? What do you reckon about the carby? Thanks again Jerry