boydw Posted November 24, 2003 Report Share Posted November 24, 2003 I have the chance of purchasing an ossa, it has no documents but has been registered, and i can't remeber the number. However i wondered if any one new which model it is, Its all white in colour with a green stripe on the tank and airfilter cover, and the ossa emblem is written in gold, the bike hasn't run for about 10 years, and is in semi decent condition. Any one any ides Cheers Quote Link to comment Share on other sites More sharing options...
the artist formerly known as ish Posted November 24, 2003 Report Share Posted November 24, 2003 Are you the Silsden Boydw? if so just pop down and see Keith Horseman, he did a lot of development work for Ossa. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted November 24, 2003 Report Share Posted November 24, 2003 Sounds like an ossa MAR mick andrews replica, Dave Wood who posts on the other site as woody is your man with lots of knowledge on them. Quote Link to comment Share on other sites More sharing options...
boydw Posted November 25, 2003 Author Report Share Posted November 25, 2003 Cheers Ish, Nigel and Big John, Yes ishy i am from near silsden, but its my dad you probably know better than me. I rode around near you in the 2002 Scottish, when you rode that little sherco. I think it must be a mark 1 by the sounds of the descriptions given, cheers lads Quote Link to comment Share on other sites More sharing options...
woody Posted November 30, 2003 Report Share Posted November 30, 2003 The only problem in trying to identify Ossas without seeing them is that as the bikes were so similar between 74 and 79, if previous owners have repainted or modified them in any way it is almost impossible to tell which model it is from a description. 71 - 73 bikes, the MK1, would have had fibreglass tanks with broad green stripe as Big John said, bolt on carb, flat fork bottoms and a short wheelbase due to a shorter swing arm. You can tell the short swing arm as the shock mounts are virtually right over the spindle. Mk2 74 - 75 had the alloy tank, rubber hose fitted carb larger diameter crankshaft assembly, the toolbox built into the left hand sidepanel and a 1" and a bit longer swing arm (spindle sited rearwards of the shock mounts) Different forks were fitted with bit where the spindle passes through now shaped and rounded. Thinner green tank stripe came down from the filler cap and swept back along bottom of tank to rear - very different from MK1. Detachable rear 'cherry bomb' shape silencer added. 310 model also introduced with red / green stripes. MK3 76ish was a MK2 with longer front forks and the shocks canted over at more of an angle, the rear shock mount is down by the bottom rear sidepanel screw. They were then fitted with a longer front pipe followed by an hideous, longer rear silencer which was now welded to the middle box. 77 - 78 model was green tank and sidepanels, black frame, white / tranlucent (and very breakable) mudguards. New style fork yolks painted black. Around this time they moved the rear top shock mounts up the frame a bit, shortened the swingarm again and slightly changed the shape of the tank and sidepanels. The barrel fins also had cut outs in them making them look different from earlier models. 79 model got a green frame and mudguards and somewhere along the way got different porting (so I'm told but that may also apply to 77 - 78 model) 80 Then came the Gripper...... Anyway, enough of this waffle, there is a good site for Ossas with loads of info run by a Swedish guy called Mats Nyberg, link below. If you have the engine and frame numbers - they are identical 6 figure numbers except engine is prefixed M, frame prefixed B - there is a link on the site to a reference sheet by a Giovanni Dughera where you can check the model type against the frame number. As engine / frame number on a bike always matched, you can date both the frame and the engine from this chart. The early bikes are listed as MARs but the later bikes are refered to as model type TR, ie; 250 TR77 would be a trials 1977 model etc. One thing to be aware of though is that parts for Ossas are becoming harder to source in the UK although via the web you can get virtually anything from the USA. Hope you found something useful in all this waffle, I'm not an expert on Ossas, just that the MAR is my favourite trials bike (most of the time..) As someone else said, Keith Horsman who lives accross the road from John Lamkin's place also knows a fair bit about them and used to modify them for Ossa UK. Link to the Ossa site is Mats Nyberg Ossa Quote Link to comment Share on other sites More sharing options...
boydw Posted December 10, 2003 Author Report Share Posted December 10, 2003 Big John - Yeah thats right, he rode fairly regularly through out the seventies and also made a comeback last week in a pre 65 trial! He doesn't ride so much nowadays, although he shows a lot of interest for the scottish and the scott. Did you used to ride around that time? Quote Link to comment Share on other sites More sharing options...
the artist formerly known as ish Posted December 10, 2003 Report Share Posted December 10, 2003 Good to hear from you Boyd, I hope to see thi again in the event next year. Talking on the phone to our lad yesterday, he must be going thru the midlife crisis thing, just dumped a barrow load of brass into a sports car, Johnboy stopped by to look at it and our lad asked him what he thought to it, in a dry reply he said " what a waste of a bloody nice motor" Si thi in Fortwilliam. Quote Link to comment Share on other sites More sharing options...
perce Posted December 10, 2003 Report Share Posted December 10, 2003 Hey Boydie why the new handle? What was up with GOGOJESSIE? Quote Link to comment Share on other sites More sharing options...
boydw Posted December 11, 2003 Author Report Share Posted December 11, 2003 Thought i'd come out of the closet James, Ishy - it must be all of his steaks i ate whilst training for the scott, thats paid for his new motor, I should be seeing him over christmas, johnboy might lend him a bike to ride on boxing day, at howden woods very own special christmas world round! Looking forward to a few beers up in fort william, should i get through tthe ballot!!!! Quote Link to comment Share on other sites More sharing options...
boydw Posted December 16, 2003 Author Report Share Posted December 16, 2003 yep john thats my old man! If i remember right it was a red one? Quote Link to comment Share on other sites More sharing options...
the artist formerly known as ish Posted December 18, 2003 Report Share Posted December 18, 2003 His dad was there in 02 John, but he wasn't driving a clapped Volvo, some sporty air cooled German model Quote Link to comment Share on other sites More sharing options...
boydw Posted December 21, 2003 Author Report Share Posted December 21, 2003 Yes dad was up at the scottish, in 02 and 03, probably was with sid, cos me and james were riding around together most of 02 and a bit of 03. Have you any snow yet up in scotland big john, i wanna get my snowboard out Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.