eviljim

If it was anything like my beta then you are in for game... However I think my problem was in the calliper. The problem you have is there is probably air stuck in the master cylinder. The way they are routed (on old beta anyway) there are loads of places to get air trapped. So much simpler of my gas gas ec. What 007 said is good advice, I did it, on his advice I think, but it's very messy. First I would try back bleeding maybe take the master cylinder off to turn it round you may be lucky, oh and use a rod to push the cylinder when you are doing the traditional bleeding it will give you more travel.

Yes your correct, in general I get real pleasure working on motorbikes. I even enjoyed taking the brakes to bits and all that jazz, but i I did like bleeding the seeming random none sensical nature of the them and being covered in brake fluid. Next job swing are bearings, that should be more satisfying.

So another 3 hours again tonight but I now have a working brake! I don't know why I am pretty sure there was some luck involved. I do not want to go though that again. No pleasure, only pain

I keep my bikes at my mums place about 4 miles away for a few reason one of witch is she has a small paddock I can play in. So this means tinker time is tight I cant just nip out to the shed for a hour. Over the last week I must have spent 9 hours on this brake really eating into my bike time. Anyway spent another few hours tonight ended up with it on the bench to get the calliper nice and high, bled the MC, still crap, decide to double the size of the virtual disk in case the issues was crap pads and then loads of air started coming out, and kept end on coming so much I wonder if it's pulling air in. Or it could be there is a load at the back of the pistons. So, the next thing is the rebuild the calliper again. When I did it the first time I could not see or feel any difference In the seals, could I have put them in upside down? I did not pre fill with any fluid so I will do this this time. I now hate brake fluid.

Thanks, don't think its a hole. It was working really will before it started to bind. I will put try bleading the MC on the bench.

I have a beta rev 3 2002. It's my first trial bike, I have had it about a month. It was a little un loved, so needs a bit of tinkering, which it is getting. I am working thought it Anyway, I actually rode it last week, and the rear brake started to bind, so after looking at it I decided to rebuild the calliper new seals and pistons. Putting it all back on and it's not working as it should. I have looked around the internet, I did before I did the work. I am now stuck for what to do next. Symptoms are. Very little brake pressure Most of the time a spongy feel. Ie does not brake very much I have done the following Rebuilt callipers. 4 pot ajp's Pushed the pots fully in when building. ( I did not pre fill the calliper with fluid, could this be my error) Bled in the normal way, I did not use the leaver but rather a device to push the piston Up the MC to get more movement. this did not work so I have now used a syringe to back feed the system. I have also used a syringe to presure the system form the top (removing reservoir) I have done this with the MC and reservoir removed a placed it a better position it at the top with no loops int the cables. I have also removed hole system and then advanced the pots further than they could on the bike then pushed back to get back on the bike. It feels like there is air in the system but i can't think were it is. oh I have also undone the banjo on the MC in an attempt to bleed that too. I am not sure I did the very well, one person pressure the MC I undid the banjo fluid came out did it back up again, did this twice. So after spending too much of my very limited time on it I am at the end of my tether. Help, All I can think of is the get the pots out and fill the calliper with fluid before putting them it but I don't think this is the issues. Or maybe bleeding the MC better This may not make a lot of sense As I am doing it on my iPad, I am dyslexic, I am tired and my wife is talking to me. I will re read and correct tomorrow,

So NGK. Tells me to use a BP7ES. Went to get a new one from local shop and they did not have one. I can get one online I am sure but I was thinking could I just put in a B7ES OR A BR7ES.

Thanks. Good info.

Hi does anyone have a 2002 rev 3 manual or as near to that year as possible. Can find one on the net. I have just bought one that needed what i tough was a bit of tlc but the more work I do on it the more it seems to need. I could do with knowing how it should be put to ether as apposed to guessing. So an exploding diagram would be good. Cheers EvilJim

Thanks, can I confirm then that the 2002 does not have the magnesium casing then. I seem to recall reading it came in later but can't find that post again.

Hi. I have just bought a 2002 rev 3. I have a few questions. I am sure they have been asked and answered before but I can not find them. What ratio should I mix to. It's simpler for me to use putoline or silcoline just because I can buy it local. What should I use? What coolant should I use? What gearbox oil should I use. ( I am in the uk) Cheers

Well I have bought it. It needs some love, and a few bits. Chain tensioner need fixing. Wheels need some work. There is some corrosion in a few places, a few nuts and bolts need changing. I am yet to look at the water pump but I think it is ok. Rear sprocket will need changing, plastics are a little tired. Runs very nicely , sounds very nice, brakes work well but need some adjusting. Starts well. I only have my brothers 2008 sherco to compare it too, and it very different to that, but I am hopeful I have got a decent bike. I have a few question but I think I will start a new thread.

Yes that's good info. It was the parts thing in was more worryed about. I would think a lot of the service parts are standard anyway. Bearings, plugs etc chain. Its thinks like gaskets, gear and brake levers. And water pump cover if I ever need one. I will call lampkins and have a chat I think

Hi I am looking at what appears to be a low use 2002 rev 3. Tomorrow. Anything I should be looking for out of the normal bike stuff. Did one this old still have the water cover rotting a issue? Can you still get parts for them? Thanks.

What updates happened in 2003 on the rev3? Looking at parts, a lot of cover 2003 to 2008. So was there a major update in 2003?