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Power meter question
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 2011-07-04 9:52 AM |
Elite  3595     Quebec, Canada |  Subject: Power meter questionI am currently looking to get my hand on a Quarq power meter, but I am wondering. I am far from good as far as bike mechanic and I figured that you guys could help me. On my speed concept the bottom bearing is a GPX from what I read. So I would have to buy a Quarq on a SRAM900 crank to make sure it fits on my SC. On the other hand my roadie is equiped with an Ultegra crank, which from what I read, doesn't not comes with a GPX BB Is there a way for me to buy a power meter crank that would fit on both of my bike? Thanks in advance! |
| 2011-07-04 10:12 AM in reply to: #3579765 |
Champion 9060 Charlottesville, Virginia | Subject: RE: Power meter question rlejeune - 2011-07-04 10:52 AM I am currently looking to get my hand on a Quarq power meter, but I am wondering. I am far from good as far as bike mechanic and I figured that you guys could help me. On my speed concept the bottom bearing is a GPX from what I read. So I would have to buy a Quarq on a SRAM900 crank to make sure it fits on my SC. On the other hand my roadie is equiped with an Ultegra crank, which from what I read, doesn't not comes with a GPX BB Is there a way for me to buy a power meter crank that would fit on both of my bike? Thanks in advance! Yes, just pick up a new GXP BB for 35 bucks and put it on your Road bike. Otherwise the crank won't move between bikes. Your other option is to buy a Powertap, then you just need to switch your rear wheel between your bikes, that's what I do right now. |
 2011-07-04 11:40 AM in reply to: #3579765 |
| Subject: ... This user's post has been ignored. |
| 2011-07-04 11:56 AM in reply to: #3579765 |
Veteran 140 | Subject: RE: Power meter question I've had both PMs. Currently have Quarq PM and love it. Especially because I can run my aero wheelset for races. I got the FSA crank because my bottom bracket was the older small version. If your Tribike and roadie has the same BB size it is as easy as getting a compatible BB for each. I know some/?all new Speed Concept's have that huge BB90 Bottom bracket. That wouldn't be usable with some domestic road bikes without an adaptor though. May have to bump to a Quarq expert. Overall, it's very easy to swap the cranks-10-15mins tops. Yes, it is easier to swap a rear wheel Powertap...but I like that I can run different wheelsets. Good Luck. You'll love training and racing with power. Doc |
| 2011-07-04 12:49 PM in reply to: #3579765 |
| Elite 3595 Quebec, Canada | Subject: RE: Power meter question Nice, thanks everyone. That clears up some stuff. Weird but I never tough that I could change the BB on my roadie, silly me :p |
| 2011-07-04 1:13 PM in reply to: #3579765 |
| Veteran 198 Chicago, IL | Subject: RE: Power meter question I'm sure some will disagree, but my opinion is that changing out BB and crankset on a regular basis runs a high risk of damaging the BB threads on the frame. If you plan to do this on a fairly regular basis, I would go with a Powertap setup in a nice aero wheel or trainer wheel with a disc cover for racing. |
| 2011-07-04 1:15 PM in reply to: #3579966 |
| Pro 4828 The Land of Ice and Snow | Subject: RE: Power meter question 08M3Sedanski - 2011-07-04 2:13 PM I'm sure some will disagree, but my opinion is that changing out BB and crankset on a regular basis runs a high risk of damaging the BB threads on the frame. If you plan to do this on a fairly regular basis, I would go with a Powertap setup in a nice aero wheel or trainer wheel with a disc cover for racing.
I was wondering the same thing actually....... As others have mentioned, this is an advantage of the Powertap: you just switch out the rear wheel when you switch bikes. |
| 2011-07-04 1:24 PM in reply to: #3579966 |
| Champion 9407 Montague Gold Mines, Nova Scotia | Subject: RE: Power meter question 08M3Sedanski - 2011-07-04 3:13 PM I'm sure some will disagree, but my opinion is that changing out BB and crankset on a regular basis runs a high risk of damaging the BB threads on the frame. If you plan to do this on a fairly regular basis, I would go with a Powertap setup in a nice aero wheel or trainer wheel with a disc cover for racing. Those who do this don't actually change out the BB on a regular basis; just the crankset. The only time the BB would need to be removed would be to replace the current BB with one that will accept the Cinco. After that it is just a matter of pulling the crank off one bike and installing it on the other; with practice, easily accomplished in under five minutes. Shane |
| 2011-07-04 1:28 PM in reply to: #3579765 |
| Veteran 198 Chicago, IL | Subject: RE: Power meter question My understanding is that the other crankset is an Ultegra and the SRAM/Quarq crankset has a taper which is why the GXP BB is needed on the road bike, otherwise the Ultegra BB would have worked. I may have this wrong and I do agree that not changing the BB makes this a doable solution. I have both Quarq and Powertap PMs and like both of them. My only concern is frequent removal of the BB. |
| 2011-07-04 2:31 PM in reply to: #3579983 |
| Champion 9407 Montague Gold Mines, Nova Scotia | Subject: RE: Power meter question 08M3Sedanski - 2011-07-04 3:28 PM My understanding is that the other crankset is an Ultegra and the SRAM/Quarq crankset has a taper which is why the GXP BB is needed on the road bike, otherwise the Ultegra BB would have worked. This is correct; however, unless one needs to ride both bikes at the same time, having the GXP BB on both bikes allows the Quarq crankset just to be moved between bikes depending on which bike is going to be riden. Shane |
| 2011-07-05 5:40 AM in reply to: #3579765 |
| Pro 5892 , New Hampshire | Subject: RE: Power meter question Moving a crank from bike to bike is almost as easy and fast as swapping wheels... really, there's nothing to it. Make sure you have the right bottom bracket for the crank you're buying (in this case GPX) and have the same bottom bracket on both bikes. I can see having a PowerTap is you have one set that you can train and race on (I have a set that I used just like that), but it does mean that you need to have the same cassette on all wheels, you can't have one set for the nice long climbs and another for racing flat, fast tri, etc. This is the benefit of a crank based system. |
| 2011-07-05 7:56 AM in reply to: #3579765 |
| Veteran 198 Chicago, IL | Subject: RE: Power meter question I was stuck in the paradigm of having a crank for each bike. Still, I can't imagine myself changing even just the crank 2 or 3 times a week when I switch riding between bikes. I do see how a more patient person or someone who will mostly only be riding one of the two bikes for longer periods of time could make this work. |
| 2011-07-05 7:59 AM in reply to: #3580574 |
| Elite 3779 Ontario | Subject: RE: Power meter question audiojan - 2011-07-05 6:40 AM Moving a crank from bike to bike is almost as easy and fast as swapping wheels... really, there's nothing to it. Make sure you have the right bottom bracket for the crank you're buying (in this case GPX) and have the same bottom bracket on both bikes. I can see having a PowerTap is you have one set that you can train and race on (I have a set that I used just like that), but it does mean that you need to have the same cassette on all wheels, you can't have one set for the nice long climbs and another for racing flat, fast tri, etc. This is the benefit of a crank based system. But swapping a cassette is even easier than swapping a crank, so I'm not sure why you're stuck with just one cassette? |
| 2011-07-05 8:01 AM in reply to: #3579765 |
| Subject: ... This user's post has been ignored. |
| 2011-07-05 8:04 AM in reply to: #3579765 |
| Pro 4909 Hailey, ID | Subject: RE: Power meter question I own a quarq and had to get a new BB for my road bike. Got that installed and now I swap the crank between my two bike. It takes me maybe 2 mins to do and actually I find it easier than swapping a rear wheel or a cassette. I'd go with the quarq, or as suggested, wait until after interbike to see if there are price drops. I hear the garmin pedal system will be just as expensive, if not more so. |
| 2011-07-05 8:06 AM in reply to: #3580719 |
| Subject: ... This user's post has been ignored. |
| 2011-07-05 9:11 AM in reply to: #3580721 |
| Elite 3595 Quebec, Canada | Subject: RE: Power meter question From what I read the new Garmin system will be around 1500$. I am not interested by a powertap at all, I have some set of wheels that I use depending of the race profile and I want to keep the liberty of choosing my wheels on race day |
| 2011-07-05 9:48 AM in reply to: #3580721 |
| Master 2020 | Subject: RE: Power meter question trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. |
| 2011-07-05 9:58 AM in reply to: #3580966 |
| Pro 4909 Hailey, ID | Subject: RE: Power meter question I would also think pedals would suck to switch between bikes all the time. |
| 2011-07-05 10:18 AM in reply to: #3580995 |
| Champion 9060 Charlottesville, Virginia | Subject: RE: Power meter question bradword - 2011-07-05 10:58 AM I would also think pedals would suck to switch between bikes all the time. Pedals of all things listed would be the fastest and easiest to switch between bikes. |
| 2011-07-05 11:00 AM in reply to: #3580966 |
| Pro 4828 The Land of Ice and Snow | Subject: RE: Power meter question jhouse4 - 2011-07-05 10:48 AM trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. Darn shame........if there was a Sppedplay pedal power system I would be ALL over it. I think we all search for the perfect "multiple bike/ multiple wheel" power solution........but short of having enough cash to make sure each bike is outfitted with its own Quarq I don't know what this is! |
| 2011-07-05 12:21 PM in reply to: #3580966 |
| Expert 936 Salisbury | Subject: RE: Power meter question jhouse4 - 2011-07-05 10:48 AM trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. I was really looking forward to "speedplay" pedals with power. I'm not even sure I'd go with pedal power otherwise. Is there an "official" announcement of this change? I might stop waiting and pull the trigger on something now if this is the case. Also, is Interbike in September? |
| 2011-07-05 12:26 PM in reply to: #3581160 |
| Pro 4909 Hailey, ID | Subject: RE: Power meter question aquagirl - 2011-07-05 10:00 AM jhouse4 - 2011-07-05 10:48 AM trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. Darn shame........if there was a Sppedplay pedal power system I would be ALL over it. I think we all search for the perfect "multiple bike/ multiple wheel" power solution........but short of having enough cash to make sure each bike is outfitted with its own Quarq I don't know what this is! Is changing a crank really that hard? Again, I do this probably 2 time a week and it takes less time then getting dressed or finding all my cycling gear. Changing a crank takes on allen wrench at 2 mins. Works PERFECTLY for me.  |
| 2011-07-05 12:34 PM in reply to: #3581160 |
| Elite 3315 Miami | Subject: RE: Power meter question aquagirl - 2011-07-05 11:00 AM jhouse4 - 2011-07-05 10:48 AM trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. Darn shame........if there was a Sppedplay pedal power system I would be ALL over it. I think we all search for the perfect "multiple bike/ multiple wheel" power solution........but short of having enough cash to make sure each bike is outfitted with its own Quarq I don't know what this is! quarq is not the perfect system IMO and alot of people don't REALLY need a quarq. i have several colleagues that i ride with who currently have a Quarq simply because they think its better. and don't get me wrong its an amazing system....but changing a crank from bike to bike is not a 30 second job... but guess what they only have 1 pair of wheels and 1 tt bike? a power tap would be sufficient, even if they only used it for training. after 12 months of riding with a pm i can comfortably hold a certain wattage and be within 5-10 watts of what i think i am averaging without looking at the watch. PE goes a long way. now i am not saying that PM's aren't worth it they ARE an amazing training tool but not the end of the world. having said that, a padal pm system is something i would purchase, and waiting for Garmin's impatiently especially if the price point is 1500 which I doubt it will be, considering i have different 3 wheel sets want a 4th and a disc, and eventually will have 2 bikes (only a road bike currently working). FYI the look / polar power pedal system = $2500, its this months issue of OUTSIDE magazine. Edited by trix 2011-07-05 12:36 PM |
| 2011-07-05 12:45 PM in reply to: #3581354 |
| Master 2020 | Subject: RE: Power meter question Rencor - 2011-07-05 12:21 PM jhouse4 - 2011-07-05 10:48 AM trotpntbll - 2011-07-05 8:06 AM bradword - 2011-07-05 9:04 AM I hear the garmin pedal system will be just as expensive, if not more so.
From what I was told by a Garmin rep and what I have read on both ST & Roadbike review (Waiting for a response from DCRainmaker). This price point is the starting point ($1500) and they are also talking about bundled packages with the 500 and 800. The pedals that they are now working with are now look/shimano knock offs. No longer speedplay. I was really looking forward to "speedplay" pedals with power. I'm not even sure I'd go with pedal power otherwise. Is there an "official" announcement of this change? I might stop waiting and pull the trigger on something now if this is the case. Also, is Interbike in September? There has been nothing officially released yet. However, Garmin-Cervelo bikes have been seen with this off brand of pedals. Interbike is Sept 14-16th |
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