isitafox

Which KMC chain have you been using as there's quite a few. I've been using the Z610 HX 3/32" and had no problems at all as it's the one tartybikes recommended to me!

Problem is the standard pads have all of a sudden gone terrible, and tried everything I can to get them sorted, I've cleaned the pads and disc, bled the brake, lubed the pistons and nothing seems to be able to fix it! Think I'm gonna sell it now and get a mono trial instead!

Good to hear you've sorted it, deffo didn't wanna be splashing out a fortune if it's just a temporary fix!

Wasn't tryin to be a cock with that lmgtfy jobby, just never used it for owt before! The only one I found that'd work with normal ISIS cranks is that FSA one but it is very pricey! Just out of interest did you buy the frame brand new or 2nd hand??

An owl hooting outside!

Have you tried here?

You shouldn't need to grease it if its fresh out the box, just screw on and go ride!

Whats the geo of the Pitbull you ride at the moment? The 09 GU LE has similar geo to the pitbulls over the years as you can get both a +35 and +60 BB height which both have almost identical geo to 2 incarnations of a pitbull. And it comes in under budget at £279!

Looks like I may have to change the pads on my hope but don't know whether to stick with some boggo hope pads or if there are any pads that are good for trials? Only asking as I can't be bothered messing about selling the brake and then buying a new one if I can just get some pads and fit them!

Well I gave it a bleed and thats sorted the lever travel problem and they feel slightly better but still don't work whatsoever. Tomorrow I shall be properly cleaning up the pads and disc and trying again, if that doesn't work it'll be new disc and pads time!

Now that sounds like a good suggestion!

I'm currently in the picking up new skills zone in terms of out of nowhere I can suddenly approach a 3-3½ft and jump up straight to rear wheel and keep the front up. After trying to half pedal into stuff for years I had a few goes at just manualing into a jump and flew up something. It's amazing how out of nowhere something suddenly clicks in your head and you realise exactly how your doing something.

May just need the cones tightening but I don't know how to do it as I've always run sealed hubs.

Aye think I'll give it a bleed and then probably stick it on ebay an get a proper mono trial!

I've posted the other day bout my hope mono mini having no stopping power whatsoever so tonight I brought it in to work so I could burn the pads and hopefully decontaminate them. I whipped the caliper off, removed the pads and gave them a burn off (via a hot ring on an electric cooker) and thought while the pads were out I'd give the pistons a quick squirt with wd40 to make sure they were both moving freely. Did that, cleaned them off and let the pads cool then proceeded to put the brake back together and now it's worse than ever! When I pull the lever now it just pulls straight back to the bar and does nothing at all, I pumped it a few times to get the pads aligned back up but once they've moved in a bit the lever still pulls all the way in and does nowt! There's no sign of any fluid having leaked out of anywhere so I'm stumped! The only thing I can spot is on the actual piston itself the inner ring sits slightly proud of the outer edge of the piston but I don't know if this is normal on mini's or not. Any ideas or should I just try an bleed it tomorrow when I get up??

Yup that sounds about right, see what r n r say tomorrow. If they're any good they should try and help you put it right seen as its them who advised you to buy that setup. If you do manage to blag a refund may I suggest either the Echo TR ISIS bb or the Tryall one, got one of each myself an they're spot on, especially the tryall as the bearings are replaceable as are the cups that hold it in (in case you butcher the teeth fitting it like I did!)

Sounds like the seals on the piston are buggered, you may need a new lever!

Bit of a bugger, wouldn't have been so bad if they'd only charged for the headset fitting and chucked them all in!

It'll usually take a good few coats of paint stripper on a good painted frame, just stick loads on an leave it to work for a while. Doesn't hurt to clean the stripper off with a wire brush either.

Did they put the spacers on for free??

Yeah was thinking if you had a centred one then getting an offset one would cure it but obviously not if thats what you've already got. One last question for you, sorry to be a pain but this is really annoying me an wanna get it sorted for you, I know how pissed off I'd be if it were me! What is the width of the bottom bracket shell? It sounds like a different bottom bracket may be the cure, if the shell is 68mm then you're best finding a 68mm BB rather than a 73mm with a spacer and maybe running a 122.5mm length axle instead of 128mm. If you really want the best advice I'd ring up tartybikes in the morning and tell them your spec, they should be able to tell you what will work and then get hold of rock and roll bikes and tell them the setup they advised doesn't work and try and get a refund on the BB

Don't know what to say really as getting a new BB is a big spend, especially if that doesn't solve the problem and I'm assuming the rear sprocket is set to one side on the thread not centred like this http://www.tartybikes.co.uk/images/sprockets/large_tascrewon.jpg

You won't get a spacer on those tensiles and still have enough thread for the freewhell I reckon. What rear sprocket you using and what bottom bracket?

I'd still give the freewheel a proper flush out and just make sure the back wheel is nice and in line and the chain isn't too tight or loose. Not much else to go wrong on a single speed setup with no other cogs!

Oh yes