The 'mechanical numpty needs some help please' thread...

[Don1]

So, my bike has started throwing a fit in the middle cogs of the sprocket - and generally when going down a gear. It was fine yesterday, but today it's really unhappy. I've checked for obstruction, it's a new sprocket, new chain and I'm out of ideas. Help please! (I think it's Shimano SRAM on a Boardman Team FS).

[Don1]

Thanks all - I'll have a play with it over the next few days.

[Don1]

Thank you very much! All fixed! Except going out for a test ride saw a high speed blow-out... at the furthest point from the house. Joy.

[Don1]

FFS. It's not fixed - I just chase the jump up and down the cassette. No happy medium. So, with a new chain, new rear derailer, new cassette sprocket thing, I'm out of ideas. Could the mounting brackets be out of whack?

Also.... four punctures in four rides. New inners across the board - what else should I check? I've done the rims, seen for anything else mechanical. The tyre is looking a bit second hand now, so I'll replace that. Is 'Slime' worth it? I'm not a small lump, so I can imagine the rear wheel takes a battering generally, but I'm not jumping it, pinching rocks or anything else like that....

(At this rate I'm going to give myself an early Xmas present...)

Thanks!

[Don1]

After this ride the rear has cracks in it, so I'm not taking any chances now. Time for a new tyre... Another Mountain King 2.2 I'm thinking....

The changing is up and down, everything has been replaced on the bike within the last year.

[Don1]

Ta.

[Don1]

For the love of God.... looks like both of my disks are now warped as well. ARGH!

[Don1]

I've waved the white flag and it's at an LBS for some love.

[Don1]

Noooo! I NEED a Nukeproof.... Or maybe a Mondraker...

[Don1]

A bent hanger, bent mech and a frayed cable has sorted the gears.But the brakes are still binding - new disks are probably the way to go... Easy to buy and fit yourself?