I'd say it entirely depends on what you want to do. If you just want to ride around with some mates and go up and down things, pull some wheelies and do some stoppies you'd probably be fine with either of the bigger capacity bikes, although the GasGas 280 has a reputation for being quite a handful I think. If you want to get quite technical with your skills, join a club and start doing some competitions you'd be better off to go for a 125. Either of the 2 you mention, if in decent condition, will have plenty enough power to get you into all sorts of predicaments. If you're still not convinced have a look on YouTube for some Youth Trials clips - they are all on 125s...
I'm sure it's a delorto and have checked the owners manual and this small air filter is called a sub filter. It connects to a small spigot on the r/h side of the carb. Its about the same size circle as a 2p piece and about 25mm thick. It mounts to the frame on a rubber bush just next to the rear brake fluid reservoir. Ihave washed and oiled this and it seems to be clear. I do appreciate your help so will get the carb off again tomorrow and check the names/numbers on it. As you can image, I can now get the carb off in the dark with one hand tied behind my back. Whilst the carbs off I might even give it another blast. Cheers guys, keep the ideas coming.
If it's got the sub air filter it's the Dellorto PHBH carb and the bike has got the wrong carb or it's a 1999 or earlier bike. I've recently had my 1999 315R stolen so you'll forgive me if I don't offer any more advice on here publically. PM me if you want my advice.
Fellas - Tks V much. Have checked for possible trapped fuel pipe (again and again!!), have stripped carb to single items, used almost a full tin of carb cleaner and a high pressure air line. Have blasted every hole in the carb. Have checked and adjusted float heights, have blasted the carb. Have cleaned air filter and the little additional air filter and re oiled, have blasted the carb. Have adjusted the air mixture screw and tick over screw and blasted the carb. ave put in a new spark plug. Finally I blasted the carb. No change!!!!!. The bike just won't seem to run at low revs or tick over. Its like the whole of the lower rev range is a massive flat spot. I can keep the bike running by keeping the revs up and mechanically it sounds fine. Did I mentioned I blasted the carb. Have given up for today........not beaten, just recharging the enthusiasam batteries for tomorrow. Any other thoughts or ideas would be much appreciated............ should I blast the carb again???
Additional air filter? Sounds like you may have a PHBH carb there. Seriously, what does it say on the side of the carb? Are you sure it's a 2001 bike? Got a picture of it?
The Norwich Viking trial tomorrow, 5th June, is definitely at Westleton. NOT at Corton as advertised in the back of the gazette.
P70, Beginners, Wobblers, T/S, all abilities up to Intermediate catered for.
It's at Bakers Lane/Mill Road, Westleton, Grid Ref. TM 444686. From the B1125 in Westleton take the small road (Bakers Lane/Mill Road) heading towards the coast that ends up at Eastbridge. The trial will be signposted on the left 1/4 mile out of Westleton.
I wouldn't discount the Oset. I had a go on a 36V 16.0 at the weekend and it was really good fun, even for an adult. We had a lad with us and he was riding over 45 gallon drum sized obstacles on it so you can do some more advanced stuff on them. On that note they are ace for hopping and bopping on if that's your thing. Making no noise means your lad can ride it every day and will come on really fast. All the skills you need you can practise on the Oset other than clutch and gears. A great way to learn I reckon.
Montesa 315's and Betas from around 96 - 99 had a Grimeca front master cylinder the lever of which might fit your bikes. Might be a good place to start if you could get hold of one to try.
Thanks guys. Yes it'll probably turn up seized somewhere close-by cos the fit-wucks are too thick to realise it needs some oil. Here's hoping an unfortunate experience overtakes them..... My bike does have a nasty streak and has developed a taste for human blood....as one of my mates will testify...
Were there any significant changes made to the 315 in the years it was produced?
No not really. There was better forks, brakes, carb in about 2001. Some detail frame geometry changes but nothing really significant.
And, seen as they are getting on a bit, are there any good mods/improvements or upgrades that you would recomend?
Thanks
No not really. I've got the rear linkage plates in mine which I like but as others have said recently not everyone does. Make sure everything is working properly and you haven't got issues with linkage or wheel bearings or brakes. Decent tyres and maybe a clutch overhaul will make life easier in the sections then just ride it and enjoy it.
The manual trys to be all things to all people and fails sometimes.
PHBH - Slow running / mixture screw is on airbox side of carb. With carb in bike it's at the rear of the carb. This adjusts AIR so out is weaker, in is richer.
PHBL - Slow running / mixture screw is on engine side of carb. With carb in bike it's at the front of the carb. This adjusts FUEL so out is richer, in is weaker.
Don't forget also that the settings in the manual are only for how the standard bike is manufactured. With different jetting, atmospheric conditions, ethanol rich petrol etc etc the actual settings required to make the thing run right may need to be different
I May be wrong but i think the carbs changed around 2001, yours would have the later one where the mixture screw controls the air rather than the earlier one which controls fuel. Those are the two different settings for the different carbs, 1 turn out as a starting point is what you should be looking at.
As someone else said recently. 'Ya gotta love internet forums'. The above is completely ar$e about face. The mixture / slow running screw on the earlier PHBH carb controls AIR and on the later PHBL controls FUEL.
Your carb should be the PHBL, with that slow running screw the engine side of the carb. The number of turns in or out of that screw is dependent on what jets you've got in the carb. If you've got a richer than standard pilot jet then that screw will be further in than 'standard settings'. Adjust it till the bike runs nicely, which is what you've done by the sound of it.
Not sure what to suggest I'm afraid. Drilling it out a bit so a tiny EZout or whatever will fit plus the heating up trick might work. What I do know is that that jet is a sod for partially blocking. It also has several tiny holes in the side like a mini emulsion tube that will of course get blocked at some point. If the bike is running OK now maybe leave it for a bit, but you'll have to see to it eventually I'd say.
Now I'm looking at it a bit more I think someone has got those drawings on the Apex site a bit cocked up. The seal assembley on my Paoli forks are actually those shown on the Showa forks. Anybody care to comment?
Have a look here, at bottom of the page. Yours are the Paoli forks - Apex. That should give you an idea although I reckon it makes it look more complicated than it really is.
sherco29's right it sounds like you've got something in the wrong order.
That split bush should be at the bottom of the bits on the stanchion as you put it together, so it goes into the top of the slider (lower leg) first. It then sits there in it's recess providing the top bearing point for the slider on the stanchion. The cupped metal washer, oil seal, circlip, outer dust seal then go in in that order.
I was mistaken my owners manual is 2002. I found one pic that I believe shows the fitting that the sub air filter hooks to, my carb definetely does NOT have that fitting or anywhere it could go.
That's the same picture as in my 1999 manual, and shows the float height adjustment for the PHBH carb (which is the same for the PHBL). If you look closely you can see that that pipe stub is at the airbox end of the carb not the engine side as it would be on your PHBL carb.
Well my bike had the bracket for the filter up near the rear brake MC? It was bent back out of the way when I got it. Where would that hook to on the carb?? A fitting in the red circled hole above??
Did you not understand what I said about those holes?
The blind hole issue is no problem. Those are just the un-drilled ports for having the carb mounted the other way around on a different bike. On a bike with the exhaust on the left-hand side as you stand over it you'd want to be able to get to the adjusting screws on the right of the bike, so the carb manufacturer makes the casting so it can be used either way around depending how it's drilled.
Are you sure the PHBL has the sub-air filter? It's on the earlier PHBH for sure but I can't see any spare inlet for it on your pics. Also if you have been looking at a schematic of the PHBH then that has a 2ndry, emulsion tube type jet under the top pilot jet. The PHBL doesn't have that 2ndry jet.
The carb that you've got is the correct one. PHBL.
Stolen Gas Gas
in Stolen Bikes
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Me too. With added battery acid soaked razor wire....Oh and with a napalm jus.