my son just started trials riding at the start of this year and has been using a beta 80. Most of this time he has been riding C class at local club trials. He is 14 years old and weighs approx. 7-8 stone. He is keen to get a 125cc bike but I wondered if this is to much to soon. If he did ride a 125cc would he still be allowed to ride C class. Any thoughts or opinions welcome.
I recently rebuilt my sons gas gas boy after replacing a broken gear selector shaft. When I start the bike and select a gear the rear wheel turns without needing to rev the bike. If I pull in the clutch lever the rear wheel keeps turning. I have rebuilt everything according to the diagrams provided by gas gas - I think.
I stripped my sons gas gas 50 boy engine to replace a broken gear selector shaft. After rebuilding the engine I cant seem to get a spark at the spark plug. The engine started and ran ok up until the gear shaft breaking. So what have I done wrong or damaged. I am pretty certain I put all the wires back in the correct place - but there again maybe not. I also cleaned the earth leads as I was told on a previous post that this is a common problem on these bikes - still nothing. I cant see anything broken or damaged. When I stripped the engine I removed the stator (not realising this was unnecessary). I put it back in exactly the same position. I also read that others have removed the ignition system and fitted a better system - does anybody have any info on this.
I stripped the clutch on my 1993 Contact. When I took the plates out there were rubber/plastic (?) type discs in between. When I cleaned the oil from them they broke apart (all of them). Can anybody tell me what they are called and if I can get replacements?
The rear wheel bearings on my sons rev 50 seem to be integrated with the spacers. Is this usual? I had thought the spacers and bearings were separate components. I need to change the bearings.
thanks Lineaway and Laser1. I looked at the diagram and it shows that the hole passage hole is a simple passage from the resevoir to the chamber. I tried pushing a small needle through the hole but the needle just wouldnt push through. It seems the passage hole is not a direct vertical passage from the resevoir to the chamber. Do some of these passage holes turn to enter the chamber at an angle or further along the chamber towards where the hose attaches?
cheers laser1, I think i,ve discovered the problem. Fluid does not seem to be able to move between the reservoir and chamber where the piston slides. Ant ideas how best to unblock it. Also what is the piston stop.
Just fitted a new piston and springs to my clutch master cylinder but i cant seem to be able to bleed the system. I tried bleeding from the bottom up but can only get fluid as far as the point where the hose screws into the master cylinder.
Can anyone advise if i need to prime the master cylinder and if so how do i do this. I tried putting fluid into the master cylinder and bleeding from the top down but nothing happens when i pump the lever.
The bottom end of the engine is the same as the KTM 65 (might also share with the 85 as already stated above). KTM used Beta to manufacture their small 2 stroke engines from 2002 - 2009 before they introduced their own power-valve engine.
Dom
Do you know where I can get a water pump shaft for these bikes? cheers
80Cc Or 125Cc ?
in Youth Trials
Posted
thanks Lockie28