Greetings Posted May 27, 2015 Report Share Posted May 27, 2015 I'm close to giving up on this one. Is it possible to achieve similar hold on a rim brake as you'd get with an 8" BB5 for instance? My current setup is LGM's (4 years old), ground rim and Echo brake lever. The forks have inverted mounts. The bite is good but the hold is not. I've been through a number of grinds since trying to solve this and I've done all sorts of things to the pads but still the hold on gaps to front wheel is annoyingly bad. The brake is only good for gaps which I can do with ease, if they are close to my limit the brake just gives up. I know I can go bigger but the brake is a limiting factor. Could it be that the pads are 4 years old and the rubber is no longer as good as it should be? If so, why is the bite still so good? Alternatively what would be another good compound to try? Blueberry? Wear is not an issue. Quote Link to comment Share on other sites More sharing options...
isitafox Posted May 27, 2015 Report Share Posted May 27, 2015 What rim are you running? I'd highly recommend giving the Trialtech pads a go or some yellow Heatsinks. 1 Quote Link to comment Share on other sites More sharing options...
waybe2014 Posted May 27, 2015 Report Share Posted May 27, 2015 Could also be the cable you're running. I have no experience with v brakes for trials but I'm sure someone will tell you a good cable setup Quote Link to comment Share on other sites More sharing options...
Greetings Posted May 27, 2015 Author Report Share Posted May 27, 2015 What rim are you running? I'd highly recommend giving the Trialtech pads a go or some yellow Heatsinks. It's a Bonz rim. Are the Trialtech pads really that good? For a number of years now I've looked no further than TNN. Could also be the cable you're running. I have no experience with v brakes for trials but I'm sure someone will tell you a good cable setup Not a V brake Quote Link to comment Share on other sites More sharing options...
isitafox Posted May 27, 2015 Report Share Posted May 27, 2015 Yeah I've had a couple of sets, only running yellows right now as I got a pretty much brand new set for £15 in CNC backings Quote Link to comment Share on other sites More sharing options...
waybe2014 Posted May 27, 2015 Report Share Posted May 27, 2015 Sorry when you said bb5 I just assumed cable. My bad Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted May 27, 2015 Report Share Posted May 27, 2015 Tried a really light grind with the LGMs? Quote Link to comment Share on other sites More sharing options...
AWT Posted May 27, 2015 Report Share Posted May 27, 2015 my heatsink yellows are a good hold on the front on a dead grind cant beat the french cousts from what i've used though Quote Link to comment Share on other sites More sharing options...
N.Wood Posted May 27, 2015 Report Share Posted May 27, 2015 Worth a try with some new pads... I liked LGMs but in the past I've found when pads get to around half worn they sometimes go a lil shitty. Worth trying a light grind as Adam said too, as they work well with a light, sharp grind. If non of these work then looks like it's time to sell up and quit the game. EDIT: I use Cousts currently (from Michael Cushionstealer direct, if that makes any difference) on the rear. 1 Quote Link to comment Share on other sites More sharing options...
MartMini Posted May 27, 2015 Report Share Posted May 27, 2015 my heatsink yellows are a good hold on the front on a dead grind cant beat the french cousts from what i've used though i always found that french cousts need a sharp grind to work best, and dull grinds quickly. where as heatsink yellows work well off a milder grind, and dont wear down grinds as much! Quote Link to comment Share on other sites More sharing options...
AWT Posted May 27, 2015 Report Share Posted May 27, 2015 i always found that french cousts need a sharp grind to work best, and dull grinds quickly. where as heatsink yellows work well off a milder grind, and dont wear down grinds as much! my grind on the rear is dead and had shit pads on before and i got given some second hand french cousts and its one of the best brakes i've had Quote Link to comment Share on other sites More sharing options...
MartMini Posted May 27, 2015 Report Share Posted May 27, 2015 my grind on the rear is dead and had shit pads on before and i got given some second hand french cousts and its one of the best brakes i've had cousts on any grind will be better than any shit pads have you tried cousts on a fresh sharp grind? ive always found me/anyone i've spoken to find them best on a sharp grind. Quote Link to comment Share on other sites More sharing options...
niconj Posted May 28, 2015 Report Share Posted May 28, 2015 I've had Trialtechs and French cousts on an Echo SL rim until recently and haven't really been blown away by the performance. I'm pretty heavy with 93kg and the hold (especially on steep rocks) wasn't really there (Racing Line Lever and Magura Slaves if that matters). I switched to a Deore V-Brake with TNN ADM pads ( because I got it rather cheap) and it's perfect. Bite and hold as much as you can wish for. Almost as good as my Saints on the 24''. Quote Link to comment Share on other sites More sharing options...
Filo Posted May 28, 2015 Report Share Posted May 28, 2015 Tnn ADM bite and hold so good on almost any surface. On a fresh grind there amazing even on a dull grind that's been in dust they still hold great. I only grind for comps these days, were lucky to have one a year. Quote Link to comment Share on other sites More sharing options...
AndeeeMK2 Posted May 28, 2015 Report Share Posted May 28, 2015 (edited) I'd agree with Tarty Adam on the light grind that might get the hold back on the pads. You run carbon forks don't you? Cousts work amazing whether smooth or ground. I ran some LGMs the other year worn grind with tar and they worked amazing! Edited May 28, 2015 by AndeeeMK2 Quote Link to comment Share on other sites More sharing options...
bing Posted May 28, 2015 Report Share Posted May 28, 2015 I've got lgms on a racing line lever with Maggie slaves, on crewkerz forks with a trialtech rim. Mine bite and hold brilliantly. Works a treat Quote Link to comment Share on other sites More sharing options...
niconj Posted May 28, 2015 Report Share Posted May 28, 2015 I think it depends, as always, on the combination of rim/pad/grind. What works for one setup, doesn't necessarily work for another. If found the Trialtech pads stellar on an Echo TR rim, on a Trialtech rim they just sucked. Quote Link to comment Share on other sites More sharing options...
Greetings Posted May 28, 2015 Author Report Share Posted May 28, 2015 Yep, it's a Karbon fork. Niconj has been generous enough to send me some TNN/Trialtech pads to check out so I'll have those to play with The LGM pads are roughly half worn so it could be wear if others have had similar experiences. Cousts - going to give that a go if nothing else works. I also tried a set of Echo CNC pads (these are AMAZING on my friends bike) but I lacked the patience to bed them in. Will get a fresh grind today and perhaps give them another go. Tried a really light grind with the LGMs? I suck at grinding rims, really. Is there a writeup somewhere on what light/medium/harsh grinds are and what disc, pressure and angle to use? These are the discs I currently use, one is 1.8mm, the other 1.4mm. Quote Link to comment Share on other sites More sharing options...
niconj Posted May 28, 2015 Report Share Posted May 28, 2015 (edited) Yep, it's a Karbon fork. Niconj has been generous enough to send me some TNN/Trialtech pads to check out so I'll have those to play with The LGM pads are roughly half worn so it could be wear if others have had similar experiences. Cousts - going to give that a go if nothing else works. I also tried a set of Echo CNC pads (these are AMAZING on my friends bike) but I lacked the patience to bed them in. Will get a fresh grind today and perhaps give them another go. I suck at grinding rims, really. Is there a writeup somewhere on what light/medium/harsh grinds are and what disc, pressure and angle to use? These are the discs I currently use, one is 1.8mm, the other 1.4mm. Lol... get a new disc. I can't imagine them to give any good grind. I just recently bought a Bosh Diamant Disc and it works a treat especially as it doesn't show any wear, after having used it for 4 wheels. _4144462 by niconj, on Flickr _4144464 by niconj, on Flickr Edited May 28, 2015 by niconj Quote Link to comment Share on other sites More sharing options...
JD™ Posted May 28, 2015 Report Share Posted May 28, 2015 Quote Link to comment Share on other sites More sharing options...
Greetings Posted May 28, 2015 Author Report Share Posted May 28, 2015 Cheers guys, that's been a great help. So would the disc Nico posted be good for a grind which will give the best braking performance? Its intended use is to cut ceramic. Adam mentions discs for cutting stone which is sort of similar? Also what's the difference between light to harsh grinds? I mean the difference in how you apply the grind. Quote Link to comment Share on other sites More sharing options...
niconj Posted May 28, 2015 Report Share Posted May 28, 2015 Cheers guys, that's been a great help. So would the disc Nico posted be good for a grind which will give the best braking performance? Its intended use is to cut ceramic. Adam mentions discs for cutting stone which is sort of similar? Also what's the difference between light to harsh grinds? I mean the difference in how you apply the grind. I think it's the pressure you apply and also the angle you use but you'll probably get better answers by other more experienced grinders on this forum. Quote Link to comment Share on other sites More sharing options...
dann2707 Posted May 28, 2015 Report Share Posted May 28, 2015 We need Bing, he's an expert at grindr Quote Link to comment Share on other sites More sharing options...
bing Posted May 28, 2015 Report Share Posted May 28, 2015 If you want a harsh grind, press it on a bit but not too much, and maybe about a 70 degree angle. For a light grind, basically just lightly brush the surface at a 45 degree angle. Wrong grinder dann266747789993848362627282727282828282929 1 Quote Link to comment Share on other sites More sharing options...
Greetings Posted May 28, 2015 Author Report Share Posted May 28, 2015 If you want a harsh grind, press it on a bit but not too much, and maybe about a 70 degree angle. For a light grind, basically just lightly brush the surface at a 45 degree angle. Wrong grinder dann266747789993848362627282727282828282929 Any specific cutting discs you could recommend? Quote Link to comment Share on other sites More sharing options...
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