OzVMX Forum
Marque Remarks => Spaniards (Bultaco, Ossa, Montesa etc) => Topic started by: YUMASTEPSIDE on March 31, 2013, 02:38:20 pm
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Does anyone have any old magazine tests on the GPII or any spec sheets??......any one own one ?? ???
Roger
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I have a few bits on them (mag tests, original brochures, parts lists ect) unfortunately it's all in storage on the other side of the country sorry. Had two of them at different stages.
Whatcha up to ?
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.........picked up a frame/swingarm, wheels, head/barrel, tank,etc. and a pile of bits ......just trying to find a few details, fork diameter, shock length that sort of stuff ;D
Roger
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See if you can get a copy of VMX issue 38. If not pm me and I can photocopy and mail. Jerry
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......got one,Jerry, but its not big on details,more history than specs. Thanks anyway, Jerry. :(
Roger
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There's a bloke in Qld who is an Ossa guru. I think his name is Cookie or something like that. Someone on here will have his contact details. Also Steve Eastham down here in Vic has a few clues. J
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Cookie now owns my old one (in vmx), they ran betor forks/clamps and piggyback shocks that was common on all Spanish iron of the day (taco's and tesa's).
Cookie is on the gold coast and has a sail/mast building business, but good luck getting anything out of him, he's happy taking what you've got but doesn't reciprocate if you get my drift.
Phil Young in Wachoupe is an ex dealer and knows them inside out and eager to help.
John Boag bought my other one and he may have a few things up his sleeve also.
Chassis components are easy to come by as they where a common component with other manufacturers of the day, engine bits usually have to come out of the US and can be expensive.
Steve Eastman does new gel coated tanks for them and maybe seat covers.
Good luck...oh and use a Yamaha rod.
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The Ossa guy in the states is I think Keith Lynas or something like that. Easy to find on the net. J
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Thanks for all of that ,I know Phil Young ( I originally come from Coffs Harbour )and I've dealt with Keith Lynas and Ron Bors in the states on parts for my SDR........anyway, now the fun begins......again ;)
Roger
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Is this the GPII ?
(http://i574.photobucket.com/albums/ss185/mposs/Save0003-11_zps99bc8e32.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Save0004-7_zps8412bbf9.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Save0005-7_zpsbf1f62a5.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Save0006-4_zps0318e1ee.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Save0007-2_zps81a02fb3.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Save0008-1_zps0e8e343e.jpg)
(http://i574.photobucket.com/albums/ss185/mposs/Image0146_zps99e1d82d.jpg)
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Bingo !!
Did Roger Harvey draw for MXA in '76 ? That one on the specs page looks like one of his scribes :)
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It's interesting to see how far Works Performance shocks go back as well (ad on last page). I've got three sets of those finned alloy Works shocks, one set on my Maico trials bike, another on my 350 squarie and the third currently on my bench undergoing a rebuild. I've also pulled down a set of steel bodied Works shocks manufactured in the late 90's and have found them to be almost identical to the early models, the only visible difference being the size and position of one seal. The fact that Works shocks still compare favourably with YSS, Ohlins and other high tech products says a lot for Gil Vaillencourts (and Charlie Curnutts) design in the early seventies.
It's also interesting to see the ad for 'Protopipe Exhaust Systems' showing the availability of up pipes for AW Maico (amongst others) in 1976 which adds credence to the argument that the current rules stating that the exhaust follow original lines as per manufacture are a bunch of Hooey and need to be re worded.
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......I thought the GPII (or AS-76) was a 1976 model not a '77, is that article a GPIII?.....Sorry, dont know a lot about OSSA's ??? ???
Roger
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......I thought the GPII (or AS-76) was a 1976 model not a '77, is that article a GPIII?.....Sorry, dont know a lot about OSSA's ??? ???
Roger
That is the GPII, the GPIII was late '77 and looked quite different..
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There's a whole bunch of Ossa stuff here: http://hem.passagen.se/ossa/ (http://hem.passagen.se/ossa/)
Another GPII test here: http://davestestsandarticles.weebly.com/uploads/4/8/4/5/4845046/trail_and_track_october_1976_ossa_as_76_phantom.pdf (http://davestestsandarticles.weebly.com/uploads/4/8/4/5/4845046/trail_and_track_october_1976_ossa_as_76_phantom.pdf)
P.S. YUMASTEPSIDE, I do get your avatar. Great movie.
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......I thought the GPII (or AS-76) was a 1976 model not a '77, is that article a GPIII?.....Sorry, dont know a lot about OSSA's ??? ???
Roger
It was, it's just OSSA bought the Phantoms out mid year, so the GPII arrived in June 1976, with the GPIII coming in June 1977.
The article is a GPII. They are sometimes are known as '76 1/2 models.
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............I've got another request,can anyone tell me the length of a set of GPII forks ??..........from the top to the axle centre??
Roger
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G'Day Roger,
Measured with the forks removed from the bike, from the top of the capnuts to centreline of axle is 640 mm with the tubes bottomed out, and about 843 mm fully extended. Good luck with your GPII. Mike.
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............another question (I'm new to this ossa stuff,so bear with me :-\ )...........a set of ossa triple trees with 2B stamped on them, any idea what they might be off ??
Roger
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For the most part the triple clamps( betor)are interchangeable between Ossa, Bully and Monty as they all used Betor forks.
so they could come from anything, I don't remember my phantoms having any codes on them.
Post pic for I.D. is best.
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OOPS!!....After a closer inspection and comparing photos on the web ,I think what I actually have is a '75 GPI not a GPII. :-[
The frame has a laydown shock setup but doesnt have the dogleg in the R/H frame for the up pipe, also the shock angle is not as severe as on the GPII's.........I did say I don't know much about OSSA's ;D
Roger
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Just checked all the Ossa yokes about 10 all models with Alloy 35mm Betor trees all stamped top and bottom 2B think it must be a Ossa code from Betor and all appear to have the same offset
Cheers
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OOPS!!....After a closer inspection and comparing photos on the web ,I think what I actually have is a '75 GPI not a GPII. :-[
The frame has a laydown shock setup but doesnt have the dogleg in the R/H frame for the up pipe, also the shock angle is not as severe as on the GPII's.........I did say I don't know much about OSSA's ;D
Roger
What's the engine number ? Does it have a plate/sticker on the steering stem ? If so what's the number?......but best of all GET YOUR CAMERA OUT and post a pic, all your questions will be answered...
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Bugger,...A GP1 instead of a GP2 :'( Wanna sell it ;D great bike
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........theres the problem, it has no numbers on the frame and it doesnt look like there ever was, but I did find out today that it used to belong to JC on this forum ,so I'm going to contact him and get the lowdown on it.The top ends phantom but the bottom is '75-'77 super pioneer ,so that doesn't help matters any!
Roger
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The numbers where on a tin sticker on the steering stem along with the "AS 7? that would tell you what year it was, AS75 was GP1, AS76 was GP2, AS77 was GP3. Those plates are usually tough as nails, sure it's not just been painted over.
Does it have a separate airbox or intergrated sideplate type airbox set up?
Here's a pic of the r/h side, you can see tabs for up pipe and airbox mounts.
(http://i118.photobucket.com/albums/o82/evo550/Image001.jpg) (http://s118.photobucket.com/user/evo550/media/Image001.jpg.html)
Here's another, this is the one that ended up on the cover of VMX.
(http://i118.photobucket.com/albums/o82/evo550/260d_1.jpg) (http://s118.photobucket.com/user/evo550/media/260d_1.jpg.html)
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......nope, sorry, the headstem's completely clean ....nothing!...........and thats not the same frame in your pics ,so its an AS75/GPI........its the same as some that I found on the net....separate airbox and sidecovers,and the brace bar from the end of the shocks is parallel to the seat rail.
So now, where can I get some side/number plates and guards, seat foam etc......bear in mind that I got this thing in several milkcrates and theres lots of odds and ends missing......an Ossa Phantom is probably the only bike I've ever really lusted after so I'm quite prepared to spend the time, effort and unfortunately copious amounts of money to get this one back together.
Roger
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You can get most of the parts out of the U.S. although Steven Eastman in Vic has a mould for the phantom tanks.
DC should do some of the plastics as well.
Your biggest (read expensive) hurdle is to get a GP1 gearbox for it. Phantom motors turn up every now and then on U.S. Ebay andI have seen blown ones go for as much as $2500.
You say it has a super pioneer motor, are you sure it's a phantom as the super pioneers/sdr's run pretty much the previous years phantoms chassis. So a '76 SDR/Super pioneer ran a '75 phantom chassis, with a different (larger) tank and different motor.
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Yes it's definitely a Phantom frame - 75 GP (or GP1 as they now seem to be called). I got it from a fairly well known Bris-based VMXer many yrs ago, who had a near complete 74 as well. Neither frame had any ID on them & we could find no evidence of any having been there. He said they were like that when he got them & I found him trust-worthy. Not sure if he's still into VMX but he's not on the forum (AFAIK)
The correct forks for that model are long straight-leg ones w the strengthening ribs down front & back of sliders, like the later super-pioneers/mountaineers had. Ossa claimed 9" travel but in reality were more like 8". S/Pioneer versions had 7.5" but Phantom GP1 versions were quite a bit longer (both damper rods & stanchions).
Triple clamps are not the same as Mon & Bul. Diff offsets, stem dia's & tube spacings. Ossa usually used 20dia stem but that may have gone to 25 for the long travel Phantoms. Murray (VMX60) would probably know.
I found Phantom parts were almost impossible to source in OZ, tho there are several owners. If you can't source a complete Phantom gearbox/bottom-end, a Phantom 5th gear set w the S/Pioneer 1-4 gearset would give you a reasonable compromise, tho I think you have to ensure the right # of engagement dogs. I vaguely recall there was a change in there somewhere. At least that overcomes the enormous gap between 4th & 5th in the S/Pioneer box.