mad_gavo Posted March 16, 2006 Report Share Posted March 16, 2006 Ive had my adamant A1 frame for a good few months now and the only gripe is the rear brake feels really spongy and horible. The frame has a built in booster but i was wondering if it was still flexing and this was what was making it feel so pooh Seems a shame though as its a really nice working brake but it has no feel so i dont trust it The setup I am using is04 maggie normal fluidalex DX31Heatsink bluesIf its nothing to do with a booster what else can i do to remove spongyness?Cheers Gavin Quote Link to comment Share on other sites More sharing options...
TheMunn Posted March 16, 2006 Report Share Posted March 16, 2006 Try bleeding your brake again, you might have an air bubble in there. Check the alignment of your pads and stuff. If all thats fine then another booster might do the trick. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted March 16, 2006 Report Share Posted March 16, 2006 You should be able to observe the frame flexing if it is bad. Other than that I suggest as above a re-bleed, possibly with water? If none of that...possibly you have a rim made out of sponge? Quote Link to comment Share on other sites More sharing options...
Simpson Posted March 16, 2006 Report Share Posted March 16, 2006 just pull the brake in really hard release do it again and again and if you frame is flexing you will just be able to see it moving in and out. My Echo Control has a built in CNC booster but i run a booster - a new crossover is £10 for me and got a booster for £5 so value for money especially for crank flipping.If its not your frame just going to be time for a re bleed Quote Link to comment Share on other sites More sharing options...
Jez Posted March 16, 2006 Report Share Posted March 16, 2006 Guys, it's not always the frame flexing that causes problems - it's the bolts (if you're a 4-bolt boy) or the bosses (if you're a two bolt boy). These will either a) flex or twist the seatstays, AS WELL as the sideways seatstay flex (which is the only thing your built in booster will eliminate). I'd always run a rear booster regardless of frame design until someone makes a bike with 4 seatstays that you mount your brakes in between (hah, yeah right!).Seriously though, check everything else first. Only get a booster if you can SEE the flex happening. If you can't, it's a problem with the brake itself rather than frame flex/twist. Quote Link to comment Share on other sites More sharing options...
mad_gavo Posted March 17, 2006 Author Report Share Posted March 17, 2006 Checked all the alignment and that seems ok. it maybe a problem with the maggie as you have to run it with the tpa basically all the way on. Otherwise the lever has an area of pull where it just wobbles and doesn't move the pistons. this happens no matter how good you try to bleed it.i need to order some new pads so i may order a heatsink booster when i order some more pads. Just don't know whether to get blues again or splash out on some of the coust ones. are they worth the extra cash and what are the main differences? any one got any experience of them?cheers Gavin Quote Link to comment Share on other sites More sharing options...
JIX Posted March 17, 2006 Report Share Posted March 17, 2006 Blues are shit and cousts are awsome, thats the comparison. Quote Link to comment Share on other sites More sharing options...
Biff... Posted March 17, 2006 Report Share Posted March 17, 2006 Damon uses an echo 4 bolt booster http://82.110.105.16/tartybikes.co.uk/product.php?id=11I can tell you now you will never feel a stiffer branke it's awsome Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted March 17, 2006 Report Share Posted March 17, 2006 (edited) I can tell you now you will never feel a stiffer branke it's awsome A stiffer what? Also i forgot the cousts pads, they rock my mates bike loads Edited March 17, 2006 by PaRtZ Quote Link to comment Share on other sites More sharing options...
Jez Posted March 17, 2006 Report Share Posted March 17, 2006 It's been some time since I had a maggy, so I may be talking bollocks, but it sounds like you need more actual fluid in the system if you have play at the lever. That's the maggy equivalent of pulling more cable through the bolt on the canti on a V-brake (which is what you'd do if you had play at the lever on a V).Like I said, I may be talking utter shite, but that's what it sounds like from here. Quote Link to comment Share on other sites More sharing options...
mad_gavo Posted March 19, 2006 Author Report Share Posted March 19, 2006 It's been some time since I had a maggy, so I may be talking bollocks, but it sounds like you need more actual fluid in the system if you have play at the lever. That's the maggy equivalent of pulling more cable through the bolt on the canti on a V-brake (which is what you'd do if you had play at the lever on a V).Like I said, I may be talking utter shite, but that's what it sounds like from here.I can see where you are coming from cause that is what it feels like. But even if you do up one of the bleed bolts a little and try to force in a much fluid in as possible it makes no difference As for pads I think i may give the cousts a try as they may be more expensive then the blues but not much more compared to all of the other pads out Think il go for a heatsink booster though as i like the look of them and im sure that all four bolt boosters will do basically the same job Quote Link to comment Share on other sites More sharing options...
ben_travis Posted March 19, 2006 Report Share Posted March 19, 2006 Damon uses an echo 4 bolt booster http://82.110.105.16/tartybikes.co.uk/product.php?id=11I can tell you now you will never feel a stiffer branke it's awsome last i heard damon had taken his fourbolt booster off, and his brake runs amazing. I was running a heatsink, tried an RB, tried a control booster and none of them allowed me to set the brake up properly on the adamant. so i have been riding boosterless since christmas really. and its great. superb so Quote Link to comment Share on other sites More sharing options...
mad_gavo Posted March 19, 2006 Author Report Share Posted March 19, 2006 It's been some time since I had a maggy, so I may be talking bollocks, but it sounds like you need more actual fluid in the system if you have play at the lever. That's the maggy equivalent of pulling more cable through the bolt on the canti on a V-brake (which is what you'd do if you had play at the lever on a V).Like I said, I may be talking utter shite, but that's what it sounds like from here.Might be the way forwards to borrow a booster and see what its like. Il get a fully working maggie first and go from there. Quote Link to comment Share on other sites More sharing options...
John planet x Posted March 19, 2006 Report Share Posted March 19, 2006 Check that when you press the brake hard your wheel isnt pushing to one side. Probably a setup problem. Quote Link to comment Share on other sites More sharing options...
Biff... Posted March 19, 2006 Report Share Posted March 19, 2006 last i heard damon had taken his fourbolt booster off, and his brake runs amazing. I was running a heatsink, tried an RB, tried a control booster and none of them allowed me to set the brake up properly on the adamant. so i have been riding boosterless since christmas really. and its great. superb so Ah right it was on the christmas ride when i felt his brak, but it really did fell good Quote Link to comment Share on other sites More sharing options...
Alun Goch Posted March 19, 2006 Report Share Posted March 19, 2006 Personally, I'd get a booster anyway, regardless of wheather the frame has one or not.From my experience, when the brakes are applied, even if the frame doesn't flex, the brake still can. Hard to explain, but the part of the brake furthest away from the frame can move outwards, like it's twisting outwards on the seatstay.And Im sure that letting your frame do all the work of taking the pressure from the brake, surely, can't do any good.Also a booster generally stiffens (hehe) up the brake, improving the brake by making power transfer more efficient, and also giving a firmer feel overall at the lever.Hope this is clearer than mud and that I've helped, Alun Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.