collyolly

I have the same bike, not used for a couple of years now but at the time I could not get it to start easily, in the end I changed the head and insert for the low compression version and the engine was transformed. I think the standard GP is probably set up for ‘modern’ expectations when in reality you just want an easy bike to ride, just my thoughts.

Beautiful looking bike. Asking on here about classic trials bikes is going to be opening a can of worms. Lots will say make it ride like a modern bike and a few will go for originality, you have to ask yourself ‘Where am I going to ride it ?’ Not sure about the Trials scene in NZ but in the U.K. you would be hard pushed to ride that ‘Original’ bike many times a year unless you were up for a serious struggle and we have a vast amount of events throughout the year. Good luck

In the U.K. I think you will find cleaning of your bike at the event is not allowed ( other than removing large lumps of mud in the woods ! ) It’s all about protecting the ground from greases, fuels, detergents etc as once one competitor starts doing it everyone will turn up with cleaning gear and the once nice field then becomes spoilt and the sheep and cows don’t like it.

Someone is pulling your leg ! Thats a polite Brit expression ! , go down to wherever your bike is and discuss face to face, its a trials bike not some piece of exotica, just get it fixed. good luck

Should be Red, also looks like the rear silencer has been removed or lost so expect a lot of noise !

You can also use the decompressor as a brake going down hill, give it a try, probably not used for starting on a 200 as they are not exactly hard to kick over.

Hello again Blockage in the carb means that one of the small airways could be obstructed, if it was, the pilot system would not be working correctly so the bike starts on choke but then will not run when the choke is turned off. Try the compression test again after you have put a few cc’s of oil down the plug hole, this may seal up the piston clearance and give a higher compression result. If it does then you should investigate for ring and piston wear although I note you have replaced the piston and cylinder ! Good luck

I assume you are running with an airbox fitted, is that just the adaptor fitted to the rear of the carb ? If it starts and runs when cold then the ignition must all be in place I would suspect a blockage in the carb.

What did you use to stop petrol attacking the finished result ? I used rattle can lacquer from Halfords and it did not resist a minor spillage, very disappointing. You would think that paint from a car accessory business would be paint resistant.

The steering was a major problem to me, after coming off GasGas TXT I got a bargain priced Sherco but only kept it for 6 months and moved it on, as I could not trick ride and could not get it around the sections that the GasGas could easily steer round.

Whinging and moaning, can’t see that in my post, once again apologies for any offence caused.

Trialsrfun, I see you have removed your blanket comment about pre unit riders, not that fair was it ? I can only apologise if I have upset anyone with my earlier posting, it is just my understanding that certain mods are ‘accepted’ and some are not. Obviously as a predominantly U.K. supported web site ( or perhaps I am wrong about that as well - sorry) I am talking about trials here not in France, it was just a comment meant in a purely advisory manor to anyone taking an interest in this modification I had a set of Bultaco 1964 triples fitted on my bike and changed to period British parts just to keep in the spirit of the game. Yes I have an Amal fitted but that was an accepted part long before I started riding one of these bikes.

Not wanting to ruin anyone’s day but if you are riding in any form of competition then these carbs are not allowed on pre65 class bikes. ( I think, strangely that Tiger Cubs may have been given their own loophole on this but I don’t understand why ! )

You could fit higher bars

The highlighted part looks like a brake light switch.