Rockman Posted April 7, 2013 Report Share Posted April 7, 2013 Bigger forces on back wheel are going backwards. But technically, yes. All discs spin with the fins facing forward.. Hence why the Hope discs go that way? Look at all the dual disc bikes on TartyBikes. Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) something like that would work longer/more secure on a rear wheel its a front disc for motorcycles though Edited April 8, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
dezmtber Posted April 8, 2013 Report Share Posted April 8, 2013 I think family biker and ghost rider should get together. A start a trials disc rotor company They could be family ghost correct braking ltd 2 Quote Link to comment Share on other sites More sharing options...
ghostrider88 Posted April 8, 2013 Report Share Posted April 8, 2013 I think bike shops should start testing mechanics before letting them touch other people´s bikes. 1 Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) dez, i finished with 1.49 in my technician class, thats a in american. whats your qualification grade? sorry i dont want to start an argument,but in germany we have the hardest apprenticeship level for bicycle technicians in europe,thats pretty insulting to me. if you know the force paths running through the disc,youll see that nearly all discs are designd to stop a forwards moving vehicle. for trials theres different force induction,hence there COULD BE the need for dedicated discs,i think. whats your point on acting funny at this? i´m just trying to give professional input to the topic Edited April 8, 2013 by FamilyBiker 1 Quote Link to comment Share on other sites More sharing options...
ghostrider88 Posted April 8, 2013 Report Share Posted April 8, 2013 i´m just trying to give professional input to the topic Forget about professionalism around these boards, all about bro science here. Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) too sad, if more people had the demand for new ideas/technical facts,there´d be more change of manufacturers behavior. look at carbon,this stuff was blown on the market at times when you couldnt trust it at all,because enough people wanted to spend money on it... that mount above looks promising imo,the more horizontal the caliper would be to the disc,the more equal the forces in forwards and backwards braking would be. i dont hate at disc brakes in general,its just the fact that not a single trials manufacturer even does research on an innovation for the rear wheel,as it seems.its like with all things mtb riders already had on their bikes,before they reached the trials community,like isis or oversized bars Edited April 8, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted April 8, 2013 Report Share Posted April 8, 2013 too sad, if more people had the demand for new ideas/technical facts,there´d be more change of manufacturers behavior. look at carbon,this stuff was blown on the market at times when you couldnt trust it at all,because enough people wanted to spend money on it... that mount above looks promising imo Welded carbon. It's the future... 2 Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) not the whole text was pointed to the pic,just the comment about the mount. facepalm Edited April 8, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
SamKidney Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) Welded carbon. It's the future... He used carbon as an example of people not opening their minds to its possibilities. The image wasn't related to that. The image was in relation to "That mount above looks promising imo". Edit: Beaten to it. Edited April 8, 2013 by Echo Lite 09 1 Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted April 8, 2013 Report Share Posted April 8, 2013 Sorry, missed the obligatory or [/sarcasm]... Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) i think carbon welding would be funny to see....lol it doesnt even conduct electricity,we would see nothing but the welders head smoking haha Edited April 8, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted April 8, 2013 Report Share Posted April 8, 2013 it doesnt even conduct electricity Tell that to the carbon brushes on a motor... Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) these are not bonded in epoxyd... and you wouldnt want to weld carbon fibers together rather than complete tubes, right? Edited April 8, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
bing Posted April 8, 2013 Report Share Posted April 8, 2013 Cos he's never wrong. Yeah, right, and monkeys might fly outta my butt Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 8, 2013 Report Share Posted April 8, 2013 lets just stop being offtopic,it was about him keeping his 24 with a rear maggie(i assume :wink2: ) or getting a mod with dd(oh no!) thanks bing,that was so necessary,that it saved my evening from being boring like i had broke my foot joking. Quote Link to comment Share on other sites More sharing options...
bing Posted April 8, 2013 Report Share Posted April 8, 2013 (edited) Such is the life of boredom nowadays. Yeah I'm an advocate of double disk, that'd be my choice. But im biased, seen as its what I've rode for the last 4 months. There is the other alternative, The only double disk tgs 24" bike I can think of is a neon bow, but they are made of cheese, and you have the wheel flex issue. And they are a lot lower bb. Double disk compy mod every time for me Edited April 8, 2013 by bing Quote Link to comment Share on other sites More sharing options...
trialsiain Posted April 8, 2013 Report Share Posted April 8, 2013 Such is the life of boredom nowadays. Yeah I'm an advocate of double disk, that'd be my choice. But im biased, seen as its what I've rode for the last 4 months. There is the other alternative, The only double disk tgs 24" bike I can think of is a neon bow, but they are made of cheese, and you have the wheel flex issue. And they are a lot lower bb. Double disk compy mod every time for me theres also the ozonys but there pretty pricey 1 Quote Link to comment Share on other sites More sharing options...
dezmtber Posted April 9, 2013 Report Share Posted April 9, 2013 It's stupid of hope to make trials specific rotors that work best in only one direction. Surely the family ghost team should get in touch with hope to fix this issue. I would buy rotors with the updates they say these parts need to avoid flex and possible rotor failure Quote Link to comment Share on other sites More sharing options...
Ali C Posted April 9, 2013 Report Share Posted April 9, 2013 Rotors don't "need" to be one way or the other, especially with trials. Trials puts extreme forces through rotors (more than any other MTB sport) and in both directions (probably more backwards than forwards) and you rarely see a complete rotor failure. Quote Link to comment Share on other sites More sharing options...
Azarathal Posted April 9, 2013 Report Share Posted April 9, 2013 I used to love the look of the old hope/tryall rotors that came with the mk1 silver sky, the star shape ones. Quote Link to comment Share on other sites More sharing options...
Brettoll Posted April 9, 2013 Report Share Posted April 9, 2013 Dude you just need to ride it more, you were making plenty of decent progress on the 24" and it suited you better than the mod did... Though if you do sell it... let me know how much first ha ha 1 Quote Link to comment Share on other sites More sharing options...
ghostrider88 Posted April 9, 2013 Report Share Posted April 9, 2013 I used to love the look of the old hope/tryall rotors that came with the mk1 silver sky, the star shape ones. Me too, shame they were only made in one or two sizes. Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted April 9, 2013 Report Share Posted April 9, 2013 (edited) i didnt say the rotor is the major problem in trials,i just commented the exploded rotor. problem are the mounts and the rotor together,both designed for forwards directed forces,a good mount with a symmetrical rotor would be good imo. maybe the dez company makes their homework in physics (and reading lessons)before making jokes about other companies lol a rim brake is the biggest disc brake you can get with a mount that works,for a reason it had decades of use now hopes rotors arent trials specific,their calipers are,theyre beefed up in the areas an i.e. old 4piston deore xt would crack,the mounting eye on the caliper,and hopes have no postmount adaptors afaik,wich is one of the weakest points a disc can have. when you brake with a rear disc in mtb use,the caliper pushes on the front mount and pulls on the rear one(i mean the mounting holes of one mount),and IS2000 mounts are designed for that force induction. for trials a new mount,maybe between the seat- and chainstays,with diagonal orientation,viewing the brake from the side,would be good in sense of compensating both forces,forwards and backwards with the same efficiency. that mount would be expensive to develop,heavier(stay tubes would have to be asymmetrical and with thicker walls) and a pain in the arse for mass production. industrial manufacturers wait for demand of many customers before changing anything,change is lost money. i did it again,went a bit OT,sorry to the threadstarter edited for spelling correction at last haha Edited April 9, 2013 by FamilyBiker Quote Link to comment Share on other sites More sharing options...
dezmtber Posted April 9, 2013 Report Share Posted April 9, 2013 maybe the dez company makes their homework in physics (and reading lessons)before making jokes about other companies lol hopes rotors arent trials specific,their calipers are,theyre beefed up in the areas an i.e. old 4piston deore xt would crack,the mounting eye on the caliper,and hopes have no postmount adaptors afaik,wich is one of the weakest points a disc can have. hope have done trials specific rotors since they made the mono trial rotor and now the trialzone rotor for use with the trial brakes specificaly for trials they are lazer cut and could easily change the design at any time. ( asuming this you are saying hope no nothing about forces aplyed in trial riding so why dont you or ali tell them if there wrong) before they made mtb and road parts hope started there company making trials parts for motortials long before i was born. the weakest point on a brake mount is the old IS mounted bolts and mount as the forces shear and twist the fittings. show me a broken mount adaptor as i havent seen any break yet? i have seen IS calipers with bent mounts and snapped bolts. hope trialzone brakes are avalable in post mount, shame most frames arent yet Quote Link to comment Share on other sites More sharing options...
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