trialsrfun

Better to get the correct puller, they are available new from Marlimar OSSA along with the spring.

Signed it. I believe that anyone with an interest in motorsport of any kind should support this petition.

Hi Legs, I have sent a message to you.

Has anyone here on Trials Central purchased Bultaco parts from Romero Motos http://romeromotos.com/ingles/principaleng.htm

Hi sorry to read of your misadventure. Whilst the Bultaco points set up is excellent and not too difficult to set up properly if you need to replace or have the coils rewound I would seriously consider the electronic option from Bultaco UK they are very good and easy to fit.

In the eighties quite some time after Bultaco ceased production there was a new 198B in Sandiford's Bury showroom. I remember it vividly each time I went in it seemed to say BUY ME now I wish I had!

Merry Christmas to all on TC and to Andy plus a big thank you for an excellent website.

Or a chav kicks it in while you are stopped at traffic lights!

A few questions on EFI please now we have a place to ask them, Are EFI units readily available or do they need to be made by the bike company. What type of pump is used to pressurise the system. Is there an atomizing injector which presumably on a two stroke would spray into the inlet tract. Is a reed valve needed or fitted. Hope the above provides answers not arguments???

Already seen this done by a guy who rode classic trials on a 500cc Matchless. Personally I thought it an horrendous way to move a motorbike, have not seen him around for ages though.

Any one yet found out/worked out what the differences are between the two models Combat & Ice Hell?

Is EFI manufactured and supplied to bike makers as are other components or does each maker have to produce their own system?

Personally I avoid supermarket fuel like the plague, I find compared to branded fuels performance and mpg are both reduced many other people have said similar. Use super unleaded in the trials bike.

Fuel for the fire?...http://www.edmondson-racing.co.uk/technical_info.html

Does EFI (electronic fuel injection) give more power or is it another means of achieving the same as a carburettor but possibly more easily achieving future emission requirements. On a two stroke motor cycle is the fuel injected into the combustion chamber, into the inlet or into the crankcases, with pre mix the bottom end bearings still need lubrication. How do the systems work that are fitted to the OSSA & 4RT, I am aware that the 4RT is a four stroke so might differ from that fitted to the OSSA but is a pump required, presumably the vertigo will require a pump to lift the fuel from the low level tank?

Try Allens Used Trials Spares here...http://www.allensusedtrialsspares.co.uk/#/bikes-breaking/4560010283

Thank you for that information. It seems that trials is going to get very interesting, I wonder what the current makers have planned to retain customer interest in their products?

Any one know if the TRS bike is to be announced anytime soon?

The clutch of my 2010 evo has always dragged some. While usable, I'm always looking for ways to improve it. I ran into this video: https://www.youtube.com/watch?v=WvsdbgmTuuM where they use different washers to adjust the clutch feel. Has anyone tried doing that ? http://www.trialscentral.com/forums/topic/28407-the-beta-clutch-fix/ Above is the answer to the clutch issue.

Try the Beta Rev 3 200, you may well find that less is more.

The only way to ensure a carb is properly clean is by using an air line and blow gun with a small nozzle to force any dirt or moisture through and out of all the nooks & crannies that exist in a carb, a workshop air compressor is as essential as spanners for bike maintenance.

The sprocket sizes when the bike (Beta 200) was new would have been 11/42, the 250 (2 stroke) uses 11/41. I have a 250 and run with 11/42. As a rough guide one tooth less on the gearbox end is equal to putting an extra four on the rear wheel so going down to a ten is quite a step but that might be right for you. If you divide the number of teeth on the rear sprocket by the number on the gearbox sprocket you will get the reduction ratio. A gear box sprocket is not too costly so maybe worth a go but either way you need a chain tensioner fitted, the clearance between the top of the tensioner pad and underside of the swing arm is around 20mm.

The frame does appear to be a standard OSSA modified, the cylinder head with the head steady mounts is identical to that on my TR77 model.

A really good build Stuart, hope to see you out on it at a forthcoming trial.

http://www.trialscentral.com/forums/topic/28407-the-beta-clutch-fix/ The Beta problem will go away if you carry out the above