Jonny Jones Posted August 16, 2010 Report Share Posted August 16, 2010 I've just installed a front Avid BB7 (185mm rotor) on my Ashton, but at the moment its incredibly spongey! I'm using an Avid SD7 lever. I've heard that using a Linear brake cable helps out loads (Si Sagar can vouch for this for BMX's he used etc), can anybody on here say they've used a linear cable on their Trials bike? I feel I may also need to use a spacer or something for the caliper as it seems a tad wonky looking downwards on the brake... although having said this, surely when you loosen the bolts, put the brake on and tighten the bolts up during installation is meant to get the caliper's position just right? Any advice would be much appreciated! Jonny. Quote Link to comment Share on other sites More sharing options...
modifiedridah2k9 Posted August 16, 2010 Report Share Posted August 16, 2010 I've just installed a front Avid BB7 (185mm rotor) on my Ashton, but at the moment its incredibly spongey! I'm using an Avid SD7 lever. I've heard that using a Linear brake cable helps out loads (Si Sagar can vouch for this for BMX's he used etc), can anybody on here say they've used a linear cable on their Trials bike? I feel I may also need to use a spacer or something for the caliper as it seems a tad wonky looking downwards on the brake... although having said this, surely when you loosen the bolts, put the brake on and tighten the bolts up during installation is meant to get the caliper's position just right? Any advice would be much appreciated! Jonny. My uncle's got a spongy avid i think and it was fine after a while. Needs to bed in aswell, so give it time. Personally i like the feel of a spongy disk brake as it doesnt affect the power does it? Quote Link to comment Share on other sites More sharing options...
Krisboats Posted August 16, 2010 Report Share Posted August 16, 2010 Where abouts do you have the adjuster pin on the lever? Furthest position from the bars makes it less spongey and closest makes it more spongey. Also, i always find using a new cable for the first time it will stretch a little with the first few hours of riding and need adjusting again anyway. I'm using an odyssey linear slic now on the bb7 and compared to the wilko's cables i've had before it's slightly stiffer, though not massively. The only really obvious plus side is the fact the odyssey cable doesn't tighten if the bars spin round. 1 Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted August 16, 2010 Author Report Share Posted August 16, 2010 Cheers lads! I've ridden on it for about 20mins, I know they need to bed in, but was just curious. I'll leave the linear cable for the time being and see how it goes, I have good expectations for this brake lol Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted August 16, 2010 Report Share Posted August 16, 2010 I have no idea why, but if you wind the barrel adjuster right out on your lever when you set it up, it feels much better! Read that on here ages ago, and tried it on mine and it made a noticeabe difference. Also, make sure the rotor is just brushing the inner pad, and when you pull the lever the other one moves over to 'clamp' it. The amount of disc brakes i've seen set-up where the outer pod has to push the rotor over to brake... nasty way of doing it! Edit: My front set-up is a 203mm rotor (overkill!) normal cable, and a Shimano XTR lever. It's hardly spongey at all! Quote Link to comment Share on other sites More sharing options...
Revolver Posted August 16, 2010 Report Share Posted August 16, 2010 A toss lever causes this problem as well, although a SD7 is hardly a toss lever, just thought it might help anyone else reading with a similar problem. Haha! Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted August 17, 2010 Author Report Share Posted August 17, 2010 I have no idea why, but if you wind the barrel adjuster right out on your lever when you set it up, it feels much better! Read that on here ages ago, and tried it on mine and it made a noticeabe difference. Also, make sure the rotor is just brushing the inner pad, and when you pull the lever the other one moves over to 'clamp' it. The amount of disc brakes i've seen set-up where the outer pod has to push the rotor over to brake... nasty way of doing it! Edit: My front set-up is a 203mm rotor (overkill!) normal cable, and a Shimano XTR lever. It's hardly spongey at all! Cheers mate I'll have a fiddle, with the brake, that is Quote Link to comment Share on other sites More sharing options...
N.Wood Posted August 17, 2010 Report Share Posted August 17, 2010 Is this with a black caliper? My 3 silver ones were AMAZING (till they snapped), the one black one I had was dogshit, really spongy and barely any power. Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted August 17, 2010 Report Share Posted August 17, 2010 I've always found that they get less spongey the more you use them. Whether it's something to do with the spring/pistons or something, or whether it's to do with it bedding in. Just give it a while and it should sort itself out. Is it the new graphite-y colour caliper? Or the older grey/brown one? Quote Link to comment Share on other sites More sharing options...
Alle.C Posted August 24, 2010 Report Share Posted August 24, 2010 (edited) would you guys rekomend Avid BB7/BB5 or Hope mono for front on a mod ? BTW, are there any difrens betwen the Hope mono trial lever and the Hope mini-lever, Edited August 24, 2010 by Alle.C Quote Link to comment Share on other sites More sharing options...
dirt jumper jake Posted August 24, 2010 Report Share Posted August 24, 2010 would you guys rekomend Avid BB7/BB5 or Hope mono for front on a mod ? Having had both a bb7 and a mono trial, deffo mono trial. Quote Link to comment Share on other sites More sharing options...
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