faussy

The 225s are rather tame. The jerkiness could be a whole number of reasons. Poor carburation, a bad ignition or you could just not be accustomed to the type of throttle response trials bikes provide. Are you coming from a road bike or a mx bike? Has it got a flywheel weight added? You can tell if there's a 10mm spacer fitted between the casing and the flywheel cover. A flywheel weight is usually added when converting from 125 to 225 and helps to smooth the power out. I remember Kev from GGUK used to run 2 flywheel weights There should be a few posts on the forum here for 225s. 9/48 is more 125 gearing but is rather low for a 225 or 250. It could be the person put a 225 kit on a 125 and didn't change the gearing. Gearing up may help

you can get them here https://www.central-wheel.co.uk/products/classic-rims/stainless-steel-rims.html I have a pair of ss rims on an old greeves.

What's your intentions? Build a genuine replica, or a modern pre 65? If you have the original steel rims you could get them reconditioned and keep the bike original. Regardless of the rims I wouldn't waste time with anything other than SS spokes. Expensive but worth it if you intend to keep the bike for any amount of time.

Traditionally the spring/open side always faces inwards, but ive seen a few engines (some older Japanese stuff) that specifically call for the reverse on the transmission oil side.

As above, I think I remember another post from yourself where you acknowledge your bike doesn't have the original swingarm, so it may not be an 04 onwards swingarm. The pro model came in 02, so you could have the 02-03 swingarm. https://www.splatshop.co.uk/pivot-works-swingarm-kit-gasgas-txt-trials-98-01-plus-edition.html but yeah, rather than buy the spindle again just try and source the required bearings

I prefer 'turds' to sealant, Ive had gashes in the sidewall of tyres sealant wouldn't seal in a month of Sundays. Sealant/turds are ok so long as you catch a puncture before the tyre comes off the rim. If it does come of the rim, you will be pushing from that point on. Guys at the ssdt carry a front tube, which will do the front and also the rear at a pinch, and the only reliable way to get a tyre back onto the rim out in the field. If you ride relatively sensible this however is rather unlikely. A throttle cable is also easy to carry, but again very unlikely to break one. Once I caught a coolant hose on a rock and split the tubing loosing all my coolant and I didn't want to risk riding the bike any distance after that. This was on an sy250 which were known to have vulnerable hoses

The stop clock you see on tv would not be the official time being used, but I also can't see trials using anything more sophisticated than a guy on the floor with a stop watch. I remember a year or two ago Marcelli got timed out once despite the stadium/tv clock still showing he had 2 seconds left. I rewound the footage and he was correctly timed out, the tv clock was slow to start. Anything optical I doubt would work as sometimes the riders exit the sections by jumping off the last obstacle in lots of different directions. I seen last weekend Andrea Rabino lost out to Berta by something like 0.1 seconds, it was definitely less than 1s. I highly doubt they are timing riders to that accuracy. Im still undecided whether I like so much of a time element being involved. I get the 5 minutes total time to ride 5/6 sections in the first round, but when it gets to the final and they have ride the section forward and backward within a minute, I'm not so sure. Busto had a great ride last weekend on a section even Bou fived and got timed out by 1 or 2 seconds. Then there's the element in the superpole round that if you five the last section at the start you can beat the guy that fives the last section at the end because he spent more overall time. I think Raga used that to his advantage in Barcelona and ended up winning superpole

And if you go back to the 60s, 2 strokes such as Villiers will have short reach plugs 😂 Fashion I guess

Looks great

I personally would be for that. Trials is comparative, so who cares if we are all running £140 michelins or some cheapo glorified trail type. I even think trialgp needs taken down a step via tyres, but that idea isnt exactly new. The problem is trying to convince the prima donnas of your class who will scour the end of the earth for every last ounce of performance. If you even suggest they will only be able to ride up a 3'11'' step as opposed to a 4', they will tell you you are ruining the advancement of the sport

Whats a control tyre? Everyone has to run the same tyre?

So the hose from the carb to barrel is split and you've taped it up? Yeah, that's your problem right there

From memory they were 1 mm, but I'm not 100% sure. Can you measure your squish with your 0.65mm gasket fitted?

If you want to do trials, buy trials tyres. If you want to do enduro, buy an enduro bike... Anything else is a compromise, and if you ride rocks, worse than a compromise

Youre a better man than me, seems they put more up on the app than they do their website. Very little info regarding team GB from both riders and the organising body