[Closed] Pad wear

Who was the manufacturer of this pad?

I thought i'd ask here for advice first without disclosing who's they are to be fair to the manufacturer. I'll name and shame if they done

They're a Hayes Stroker Trail design.

Cheers

There has been a huge amount of discussion on this on here. There appears to be a series of factors that affect pad wear and if it all stacks up against you the pads can dissapear very quickly.

I'll try to find the recent thread
Edit: http://www.singletrackworld.com/forum/topic/is-pad-clearance-a-delusion/page/2

Scienceofficer seems to have got close to teh mechanism whereby this premature wear occurs assuming proper bedding in

Myself a pad that wore out like that I would be taking back for replacement as not fit for purpose

Can I bet it was a cheap set of organic or kevlar pads that wore out?

i broke my pad record on saturday

less than 3 miles in the peaks got me through a whole set on the back 8)

Sintered should hold up a bit better than that though.

Jeremy, I've had a read through that thread, cheers for posting. I think there is something in bedding them in properly, i possibly didn't get enough heat into mine. Like i say, i've ridden in the same muck for 3 years on no more than 4 sets of organic pads with no problems.

These are cheap sintered pads, still seem quite dear at £10 a ride though!

ben - I don't think we have all the answers yet but I think scienceofficer has a large part of it.

Everytime I think I have it sussed someone comes along with a tale that don't fit my theories.

I think heat - both bedding in and while riding is a large part of it tho

humm they dont look like they have a hugh metal content for a sintered pad. i think its like everything in the world of bike. you get what you pay for. i have hope tec x2s and i have used non hope pads and guess what? the cheap ones are cheap and last half as long. stick with the hayes sintered pads. they will have a heap of copper in them and will make a din in the wet but last allot longer.

joe x

I was also riding with MrMW in the peaks. Both my bikes (loaned one to a friend) were running avid Juicy's with sintered pads, both seriously well bedded in and used at high temperature before hand on long descents. All 4 pads worn out, half down to the metal backing with no material left. All pads had around half or more pad material before the ride. The brakes were not heavily used during the ride.

I think the wear rate in the Peaks is much like sandy areas like Swinley forest in the wet. Nothing will stop a pad wearing out in wet sandy conditions.

Solomanda - some folk don't get the pad wear even riding in areas where many folk do get premature pad wear. Thats part of the conundrum. I can't remember who it was but here was at least two all year round peaks riders who get long pad life.

Having moved area from the Peak, I am amazed how much longer my pads are lasting. Had got soo used to some pads wearing out in a couple/three months riding.

you lot need to lay off the brakes...mtfu 😉

they don't wear out when braking, they wear out in between when the particular viscosity of wet peat and suspended grit stone sand make a grinding paste like no other. If you've ever climbed/scrambled/beaten/fooled around as a kid/dry stone walled in the peaks then you'll know how abrasive grit stone is.

those riders who get longer life in the peaks will probably have more clearance when not braking or absolutely plum straight discs. In my experience the clearance you get between pad and disc when the pots are retracted varies massively even with identical brakes.

my theory is that to a certain extent, the more you brake, the LESS they wear as the action of braking serves to reduce the amount of grit on the discs and to reduce the particle size of the grit. The same was true with V brakes (i've been riding the peaks since I was 10 on various bikes so base this on experience)

I'd imagine that Solomanda will confirm that dragging the brakes is most certainly not what i do in the peaks 🙂

I agree with you about more braking = less wear but I don't believe that the wear occurs from the grit when you are not braking ( I think its to do with heat and the creation / removal of the boundary layer) - but we are both theorising / hypothesising. I don't believe there is enough friction to do this - if it was you would feel the drag. You might be right tho - and certainly the grit is abrasive.

I believe that science officer has as good an explanation as I have heard

if it was you would feel the drag

TJ, you can feel and hear the drag, every turn of the cranks, round the new forest (mud/sand/flint)

(& look how fast a tyre can wear through a chainstay, apparently without noticeable friction)

Good point scaredy. I certainly don't notice drag even when the brakes are full of my local peaty mud. You are right about the tyres tho.

Hmmmmmmmmmmmmmm

Another factor / theory to add into the mix its at least as valid as anything else I have heard of. certainly the grit in the brake when riding along could remove the boundary layer thus meaning when teh brake is next applied you get abrasive friction not adherent thus wearing the pad.

Those pads look like they're made of fudge, certainly not a sintered material. My SSC Hayes 9 pads last for ages (other makes of 3rd party replacement pads are available) but I am a fat knacker and probably heat the pads up more than most. I also always do a proper bedding in. I've never had to replace pads trail side in crappy conditions but I suspect that they would not last very long if I did.

I bought some SSC Kevlar pads and have given up trying to bed them in. Tried on two different bikes (sane pad design) with the same set of pads, they seemed to glaze over before they could bed in. There was a hard glazed layer that lacked bite/power and wet braking was non existent. Went back to the sintered and normal service has resumed. I could see why they would wear extremely quickly if the harder top layer was worn away by fine abrasive material leaving the 'softer' compound below exposed.

I'd imagine that Solomanda will confirm that dragging the brakes is most certainly not what i do in the peaks

Indeed, and visa versa for myself and jamie on my other bike for that ride. I have no doubt in my mind the wear is caused while not braking and is entirely from the grit wearing the pads JRA.