iank

My lads Rev 50 was due a plug change, I removed the old one NGK B5SH. A quick google indicates it should be a NGK B9ES. My issue is the thread is longer but does fit ok with hitting the piston but it also seems to rev a lot higher on tick over. Were these swapped for any reason or has previous owner just fitted an odd plug? And why would it rev a lot higher on ticker over? Any help or info would be much appreciated.

It has the mikuni carb in too and not the khein carb

Hi does anybody know the float height for a 2010 Evo 200? Mine is leaking fuel when leant over on the stand, was just going to start with checking the float height is correct.

it nearly chuck me over today and I thought what the hell!! Pulled the clutch in to roll the bike and it wouldn't move, it was like the clutch wasn't disengaging. After a bit rocking back and forth it was ok. Like I said the engine sounded like it was knocking a bit both times. The first time I just thought it was me but after the second time I am convinced the 2 were related. I started it again after the second time and knocking was gone. I obviously called it a day after that as I don't want to damage things any more. Ive built a few of my own engines for road racing so I should be ok to strip it all down. Although its been a few years since ive had a 2 stroke apart.

My next stop was to drain the oil and see if there is any shrapnel, failing that I'll strip the clutch side. If that fails I'll split the cases. Occasionally the kickstart feels suspect but again I put that down to user error or just the position of the stroke. Oh well at least I can give it a check over while I am in there.

I have used 2nd quite a bit but its never down it in 2nd always in 1st. It shifts as it should through the gears.

Hi all, ive been ridding on the TXT for a few weeks now and loving it. I have a strange issue where it will be in first gear and I can be moving and all of sudden it stalls and locks up. The bike won't move if I pull the clutch in or not its like its stuck solid. After a bit of rocking back and forth I can get it in neutral and away I go a again. The first time I thought it was rider error. Its now done it twice today, the motor/transmission sounded rattly before both times. The rest of the day its sounded sweet. Its like its not engaged properly and jumps out of gear but instead of a false neutral it just locks up. Any common issues I should be looking at other than buying a Beta Evo !!

Thanks, he’s only plodding around on it so definitely not flogging it just yet. I’ll check the thermostat and go from there 👍

Hi all, just picked a little Beta rev 50 up for my son to start trials on. Does anyone know what sort of temp the fan should come on? He rode it yesterday and it didn’t come on at all but it was a cold day. The fan works if I close the circuit at the thermostat so maybe it’s duff thermostat? Other question is what sort of premix ratio is good for these little Betas? Regards Ian

Hi all I am looking for a bike for my 10 year old lad. This will be his first bike. People have suggested a ty80 as a good starter but I can’t help think these are a bit outdated now? Having said that I don’t want to spend a fortune if doesn’t carry it on. The ty are in budget along with the 50cc autos from beta etc. Would the 50cc autos be to small for him are they any good or should I go down the clutch/geared route ie ty80 ……….any help or advice much appreciated

I am possibly going to look at a little GasGas txt 2000 50cc twist and go for for my lad. Apparently it did run but know the guy can’t get it started after it’s been sat for a while. What sort of psi should I be looking at on a compression test? Obvs it will be cold too, also do you test with throttle wide open the same as we do on 4 stokes?

Thanks guys, routed it up and been out on it for the 4 hours today practicing with a mate of mine. Absolutely loved it!! First trial entered for next weekend! God help me

So the txt 280 pro is up and running, gets up to temperature fine and the fan kicks in like it should and seems to ride fine. I have noticed that the small breather pipe exiting the casing near the gear lever is slightly dripping oil, seems and smells like gearbox or atf oil. The pip is routed out by the bottom of the rear shock. Seems to drip only when revs are increase. Is this normal? Sorry I am just not that clued up with these little 2 strokes, gimme a Japanese 4 stroke 4 cyclinder race bike any day of the week 😂

I am also guessing the coil should be bolted to the frame? Mine was just hanging around under the tank by the rad cap

It’s definitely the leonelli unit. The wiring looks a mess so I’ll check through when I get the replacement rectifier