mdk555 Posted July 24, 2008 Share This is hotting up' date=' should I get the popcorn??[/quote'] Come visit me and we can share some birthday cake Link to comment Share on other sites More sharing options...
decibach db Posted July 24, 2008 Share This is hotting up' date=' should I get the popcorn??[/quote'] Come visit me and we can share some birthday cake Oh ja.... HAppy Birthday!! Link to comment Share on other sites More sharing options...
Thug Posted July 24, 2008 Share Cant explain it but will try... When my stoker and I started climbing... it was as if hhis powerstroke came in just after mine. It felt as if I hit a brick wall and then he came and chipped on the wall himself. Somehow the Q rings smoothed/broadend that powerstroke. Now when I come in with my Powerstroke it's as if his stroke more evenly comes together with mine and then we have like a 10 pound hammer effect against the climb. Our stroke now feels elastic... compensating for the uneven power strokes... anyway... must feel it to believe it... hehe, I just know that JB is going to rip those subjective comments apart err.... How do you measure that Elasticity ? Link to comment Share on other sites More sharing options...
decibach db Posted July 24, 2008 Share I would really like Johan's comments. It would be good to get a technical opinion. But... one things for certain... they make a huge difference for my stoker and I. I have never in my years of cycling came across a component that made such a big difference on our tandem... worth every cent... Link to comment Share on other sites More sharing options...
TNT1 Posted July 24, 2008 Share Cant explain it but will try... When my stoker and I started climbing... it was as if hhis powerstroke came in just after mine. It felt as if I hit a brick wall and then he came and chipped on the wall himself. Somehow the Q rings smoothed/broadend that powerstroke. Now when I come in with my Powerstroke it's as if his stroke more evenly comes together with mine and then we have like a 10 pound hammer effect against the climb. Our stroke now feels elastic... compensating for the uneven power strokes... anyway... must feel it to believe it... So what you really mean is that you and the stoker were not getting out the saddle in unison? You felt a disruption in rhythm caused by the two of you acting in a slightly un-cordinated fashion, now, through more experience together, or whatever, you are more in sync, and you want to justify the cash you unloaded on the biopace chanrings? Ok, cool, whatever, but see it for what it is... Link to comment Share on other sites More sharing options...
mdk555 Posted July 24, 2008 Share I would really like Johan's comments. worth every cent... Dont even go there - the last time this was debated with technical views and points the topic hit 30 odd pages and we almost had lawsuits................ Link to comment Share on other sites More sharing options...
jabbathemutt007 Posted July 24, 2008 Share Cant explain it but will try... When my stoker and I started climbing... it was as if hhis powerstroke came in just after mine. It felt as if I hit a brick wall and then he came and chipped on the wall himself. Somehow the Q rings smoothed/broadend that powerstroke. Now when I come in with my Powerstroke it's as if his stroke more evenly comes together with mine and then we have like a 10 pound hammer effect against the climb. Our stroke now feels elastic... compensating for the uneven power strokes... anyway... must feel it to believe it... So what you really mean is that you and the stoker were not getting out the saddle in unison? You felt a disruption in rhythm caused by the two of you acting in a slightly un-cordinated fashion' date=' now, through more experience together, or whatever, you are more in sync, and you want to justify the cash you unloaded on the biopace chanrings? Ok, cool, whatever, but see it for what it is... [/quote'] You mean this has really been about cycling ? Link to comment Share on other sites More sharing options...
decibach db Posted July 24, 2008 Share Cant explain it but will try... When my stoker and I started climbing... it was as if hhis powerstroke came in just after mine. It felt as if I hit a brick wall and then he came and chipped on the wall himself. Somehow the Q rings smoothed/broadend that powerstroke. Now when I come in with my Powerstroke it's as if his stroke more evenly comes together with mine and then we have like a 10 pound hammer effect against the climb. Our stroke now feels elastic... compensating for the uneven power strokes... anyway... must feel it to believe it... So what you really mean is that you and the stoker were not getting out the saddle in unison? You felt a disruption in rhythm caused by the two of you acting in a slightly un-cordinated fashion' date=' now, through more experience together, or whatever, you are more in sync, and you want to justify the cash you unloaded on the biopace chanrings? Ok, cool, whatever, but see it for what it is... [/quote'] Sorry TNT1 said it wrong... my stoker and I know each other well.. I meant each time we started to climb a hill.... Link to comment Share on other sites More sharing options...
decibach db Posted July 24, 2008 Share I would really like Johan's comments. worth every cent... Dont even go there - the last time this was debated with technical views and points the topic hit 30 odd pages and we almost had lawsuits................ OK ... then I'm out..... seen those threads and don't like them Just trying to give my thoughts on Q-rings.... amazing what they do.... even if one cant explain it. We who know should actually not comment and just enjoy our new ride.... and new times.. and..... Decibach2008-07-24 05:19:19 Link to comment Share on other sites More sharing options...
GoLefty!! Posted July 24, 2008 Share well you can explain it like this: the Q-ring increases the gearing through the power stroke and then drops the gearing through the dead spot. This allows two things. 1) Lower gearing allows the legs to maintain momentum2) the leg moving through the dead spot experiences a "rest" due to thelower gearing. The nett result is it allows you to push a little harder and rest. HAving used the Q-Rings, they are fantastic and even if the effect is placebo it is there. However, they are not cheap and they do not last longer than conventional rings.They adversely affect shifting and I also find that they have a rev range sweet spot. If my cadence on the MTB drops below 60 then I can feel he extra gearing through the powerstroke and the other leg does not have enough momentum to pull the power leg through. So you have to keep the cadence up. You can't measure the effect on a power meter because I don;t believe there is a total power output benefit, just a reeduction in fatigue benefit. Link to comment Share on other sites More sharing options...
Barend de Arend Posted July 24, 2008 Share You can't measure the effect on a power meter because I don;t believe there is a total power output benefit' date=' just a reeduction in fatigue benefit.[/quote'] A proper study can measure fatigue using a power meter. Do a one hour time-trial test every day for a week. See how much slower you get on the Q-Rings vs. how much slower you get on normal rings. There: fatigue test. You could also try a six hour ride at endurance power, and then do a 1 hour time trial, and compare. Anything with Q-Rings would have to check long-term anyway, because switching rings switches muscle memory. And use multiple cyclists, with a known fitness level, and a known long-term coaching program (to check base, peak, taper, etc.) Link to comment Share on other sites More sharing options...
Sean Badenhorst Posted July 24, 2008 Share Originally posted by Sean Badenhorst If they are that good, why don't all the pros use them? Originally posted by GoLefty!!Youtalking about those guys who ase their career on some previousrider right down to copying the riding style, lifestyle and cheatingstyle of previous rider...?You talking about those guys who find it hard to embrace anythong they have not tried before... Oh well, Hincapie is using some really weird looking oval rin and there are quite a few riders on the Q-ring in this years tour. Any of them won a stage, or featured in a Jersey battle? If they're really that good, I'll buy them. Honestly. Link to comment Share on other sites More sharing options...
TNT1 Posted July 24, 2008 Share Oh well' date=' Hincapie is using some really weird looking oval rin and there are quite a few riders on the Q-ring in this years tour. Any of them won a stage, or featured in a Jersey battle? If they're really that good, I'll buy them. Honestly. [/quote'] Big George wears black sox and those ugly ass glasses, you gonna start doing that too? Link to comment Share on other sites More sharing options...
Willehond Posted July 24, 2008 Share Originally posted by Sean BadenhorstIf they are that good' date=' why don't all the pros use them? Originally posted by GoLefty!!Youtalking about those guys who ase their career on some previous rider right down to copying the riding style, lifestyle and cheating style of previous rider...?You talking about those guys who find it hard to embrace anythong they have not tried before... Oh well, Hincapie is using some really weird looking oval rin and there are quite a few riders on the Q-ring in this years tour.Any of them won a stage, or featured in a Jersey battle? If they're really that good, I'll buy them. Honestly.[/quote'] Sean, Sastre rides with Q-rings. Won a stage, and if you haven't noticed: he's in yellow!!! Link to comment Share on other sites More sharing options...
TNT1 Posted July 24, 2008 Share Sean' date=' Sastre rides with Q-rings. Won a stage, and if you haven't noticed: he's in yellow!!![/quote'] Will he be using them when he loses the tour on Saturday? Link to comment Share on other sites More sharing options...
Jules Posted July 24, 2008 Share My argument has always been the same as Sean's. However, gotta admit: if they're working for Sastre, perhaps we shouldn't write them off as snake oil. However, unless you're cycling for your supper or you feel excessively uncomfortable on your existing setup, I really see no point in buying them, even if they were half their actual price. Anyone know if Sastre uses them on his TT bike too? Link to comment Share on other sites More sharing options...
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