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Armstrong had the 320 & 250 piston port engined bikes and also the rotary disk valve 240 which I think was around 1984 while the 320/250 was late '84 and '85. They also continued on with mono shock versions of the 320/250. The Bombardier rotary disk engines and piston port engines appeared in several trials bikes most notably the SWM which took a world title.Post Classic Trials has a cut off 31 Dec 1986 with no disk brakes allowed and twin shocks and air cooled only. It was orginally cut off at 31 Dec '84 but was extended a several years ago mostly to allow in the TLR200/250 Honda bikes but also allowed in the Montesa Cota 242 and 330 series. It appears that the Armstrongs could also be included.Where is Feetupfun he probably knows exact details
Thanks Tim. Here's a pic of my 320TL, 1979 model. Its due at the beginning of Feb. I'll be using when I can between Vinduro's. My son has a TLM50 so we'll get out into it as often as we can. Been awhile since I've competed in Trials....have to go Clubman for awhile......just to show the boy the ropes of course The Jumbo has no lower frame cradle, subframe loop and the footpeg plates are flat plate too to reduce the frames width.
S'far as I know the forks are Marzocchi. According to Martin at SWM-Moto the trick mod to the later models is to fit the earlier straight lower clamp. I'll be happy if the thing doesn't plough the front end like a lot of the early trialers did.
I dont recall mine [SWM]ploughing round corners or tucking- I competed for a year on it prior to going Fantic 240 pro
Quote from: llewdaert on January 18, 2011, 04:51:43 pmI dont recall mine [SWM]ploughing round corners or tucking- I competed for a year on it prior to going Fantic 240 proI remember the section (amazing how we can remember sections that we rode 30 years ago). 'bout a 4' drop-off with a tight left immediately the front wheel hit the bottom, so forks were under full compression at the time.Now, of course, we'd get the front wheel to the bottom and flick the back end around.I remember doing the same on a 247 Fantic - but the thing was at full lock when it hit the bottom......took 2 Clydesdales and a portapower to get the bike out of my arse
Not at all Llew. The BSA powered machines were a novelty. Very rare (and hence never popular) and now hugely expensive. Only around 100 were made. Nor were they very good.The Hiro powered bikes were the opposite, very popular and very successful. Steve Saunders won a UK championship on one and John Lampkin had considerable success in the world championship on one.From a collectors point of view the Hiro powered bikes are, like Italjets and for the same reason, to be avoided. Spares are non-existant.