NEW, lower priced entry level cranks now available
Entry level cranks are now available for the cost conscious. Entry level cranks come in two different iterations. The first, Entry1 cranks incorporates a standard crank length of 170 mm. and the second, Entry5 cranks, incorporates 5 crank lengths from 90 to 170mm to allow the user to experiment with crank length in large chunks - both while developing better pedaling technique.
Both of these cranks are lighter than our standard cranks because they are shorter and they do not have to accomodate the adjustability feature. These will accommodate the two standard (130 and 135 mm BCD) and the compact (110 BCD) chain rings without difficulty. You only need know your BB type so we can send you the correct adapter. Tapered square (these will never go out of style). Shimano Octalink V1 and ISIS adapters are available. Many of you may have the new 10 speed integrated crank sets with external bearings and no bottom bracket axle. If that is the case then you will need to purchase a bottom bracket to mount into your bicycle. If you are confident that you do not need to experiment with crank length then get the Entry1 crank. If you do feel you would like to experiment with crank length (at least in big chunks) then get the entry 5 cranks. (Why would you want to experiment with crank length?)
Pros: Minimal cost.
Cons: Fewer options available. The Entry1 model does not allow for crank length testing. The Entry5 model allows for crank length testing but does not allow for fine-tuning crank length optimization.
This is our most popular crank. It will fit 99% of all people out there and adapt to 99% of the bikes out there. It is built to give many years of service. Every crank can be adjusted in length in 2.5mm increments. The Basic 145 model adjusts from 145 to 182.5 mm and the Basic 90 model adjusts from 90 to 182.5 mm. While many of you can't possibly imagine that you could possibly ever need or want a crank shorter than 145mm we would suggest you read our crank length discussion before placing your order. It will also accommodate the two standard (130 and 135 mm BCD) and the compact (110 BCD) chain rings without difficulty. You only need know your BB type so we can send you the correct adapter and which options you might want (see below). Our standard BB type is the tapered square (these will never go out of style). Shimano Octalink V1 and ISIS adapters are also available. Many of you may have the new 10 speed integrated crank sets with external bearings and no bottom bracket axle. If that is the case then you will need to purchase a bottom bracket to mount into your bicycle or contact us as we do have special adapter that might work for you for an additional charge.
Pros: Does everything PowerCranks is supposed to do. The extra weight and bulk adds to the training benefit and will ensure the cranks will last for many years. The new long-adjustable crank is perfect for the rehab center and replaces our old "long-adjustable" crank, which had a wider Q factor..
Cons: Heavy (about 3 lb) which is a psychological drawback to many cyclists.
"Dual-Mode" or locking option ($250) to allow the user to convert the crank into a "regular" fixed crank. This option is a "necessity" for those with only one bike who will be racing on regular cranks because this allows you to occasionally train in regular cranks (as we recommend) without needing to take the time to change your cranks back and forth.
Triple chain ring option ($50).
Extra long. For those looking for extra long cranks this crank also has an available option allowing you to extend the crank length to as long as 220, or longer under special order. Call for pricing and availability.
The PowerCranks X-lite crank system is for those who are bothered by the weight of the basic crank and for those who think they might want to race on the PoweCranks someday. With the Model 7, crank length is now adjustable from 145 to 182.5 so it will be right for almost everyone (except for those who may want to go shorter than 145) and give every cyclist the ability to easily test for best crank length for them. (see the crank length discussion). The only difference between these cranks and our basic cranks is we have tried to take as much weight as possible out of the crank arm while maintaining optimum stiffness. These are about as light and as strong as they can get while still having the strength to support the clutch mechanism and to be as stiff as possible.
Pros: Does everything PowerCranks is supposed to do but with less weight for those concerned about weight. Saves about 375 grams over the basic cranks.
Cons: More expensive than the basic PowerCranks.
"Dual-Mode" or locking option ($250) to allow the user to convert the crank into a "regular" fixed crank.
triple chain ring option ($50)
Triple chain ring option ($50).
iCranks are basic PowerCranks, modified with strain gauges in each crank arm to give individual power from each crank and individual torque data for the entire circle are in final development by a group of Australian aerospace engineers. The hollowing out of the crank arm body to accommodate the electronics and to achieve the desired strain characteristics bring the weight of the cranks down to be closer to our X-lite cranks. The iCranks modification is coming out of Australia and is currently expected to be ready to ship in December 2012. iCranks are expected to be the first second generation power meters to actually make it to the market. Ant+ compatible iCranks will be able to show real left right power data on current ant+ compatible head units like the Garmin Edge 500 or 800 display units. Using different devices, such as smart phones, the user will also be able to get a display similar to that shown to analyze a ride or in real time to analyze pedaling technique. iCranks include the dual mode feature so you will be able to see how well adapted to the PowerCranks way of pedaling by how much your technique reverts when you go back to regular cranks or you will also be able to test and measure riders not trained on PowerCranks. Because the cranks also are adjustable between 145 and 182.5 mm you will be able to easily see how different crank lengths affect both power and technique. We expect these to be a must have item for the serious athlete who believes technique matters. You will be able to see subtle issues that need fixing (e.g., notice the substantial delay in starting the push phase of the left crank compared to the right and the fact that neither leg is doing anything over the top). Do not delay getting your PowerCranks to wait for these as we can't guarantee availability. These are going to be a really good deal if you are interested in getting better. For about the cost of a SRM power meter you will get a set of dual mode PowerCranks and a second generation power meter that gives much more useful information to help the athlete improve than the simple power number a 1st generation, like the SRM, give you. Available for pre-order now and save 15% when they ship. Or,, if you order Basic or X-lite PowerCranks after June 2012 you will be eliible for a 15% discount to trade-in for upgrade or purchase as a second set for 60 days after they become available.
While most users use PowerCranks as a training system and race on regular cranks. But, some have found that when they return to regular cranks their power tends to drop so they would prefer to race on PowerCranks if the weight were less. While the X-lite cranks serve this purpose for many these cranks do not work well for those who have experimented with crank length and want to race on shorter cranks. Therefore, we now have PowerCranks made specifically for racing in fixed lengths that also minimize weight as much as possible. The only difference between these cranks and our entry cranks is we have tried to take as much weight as possible out of the crank arm while maintaining optimum stiffness and they are designed for a specific crank length, down to 75mm. These are about as light and as strong as they can get while still having the strength to support the clutch mechanism and to be as stiff as possible.
Pros: For the PowerCranker who wants to race on PowerCranks but also wants to minimize weight.
Cons: Must have done the prior work and experimentation to have determined optimum racing crank length.
Most PowerCrankers train on PowerCranks but race on regular cranks. While intrigued by our crank length argument they are afraid to try this because of the unavialibity of high quality, lightweight, cranks in shorter lengths. This model is designed to solve that issue. We combine our lightweight composite spider material with an aluminum crank arm to give the lightest, stiffest, crank possible. The lightest cranks listed on the weight weenies web site weigh 420 grams. While the weight of a crank depends upon its length you can see our 155 length crank set weighs 360 grams. This is possible because of our unique design, no need to incorporate our clutch mechanism, and other nuanced changes (we even narrow the Q as shorter cranks can be closer to the midline and still miss the chainstays. This crank is available in every length from 75 mm to 165 mm so we can satisfy almost every need but, because of this flexibility, these are a special order item so shipment may not occur until about 1-2 weeks after ordering.
Pros: The lightest weight cranks available for those wishing to race on regular cranks. The only full assortment of shorter cranks available. Narrower Q factor than most cranks.
Cons: More expensive than other cranks.
There are a few instances where the dual mode option is definitely good to have. Plus, there is something new on the horizon that might make it a good option for everyone. The known good uses for the dual mode option are:
You are a coach and will be using the cranks to do fittings. Locking them up facilitates measuring the angles you need
You are at a very high level now and have heard the stories about how hard they are in the beginning and are afraid of losing fitness. While this isn't really an issue for most you can't know if it is an issue for you until you get on them. If you need the reassurance that you can keep your mileage up and adapt a little more slowly if needed, in order to get on them, then by all means do so. Having the option doesn't mean you have to use it. But, if you don't have it and it keeps you from using the cranks, this is a bad thing
You only have one bike and intend to race using regular cranks. We recommend after the adaption period that, if you will be racing on regular cranks, that you occasionally train on regular cranks to train yourself to ride them the same way you ride the PC's. If you only have one bike the dual mode cranks facilitate this training.
Dual mode comes standard on the iCranks, which will make it easy to test how well adapted you are to the PC pedaling technique. You will be able to easily see what happens to your technique when you go back to regular cranks compared to how you pedal on your PowerCranks. And, you will be able to see if and how your technique deteriorates after a few hours on a ride. The Dual mode is integral to the value of the iCranks.
You will put them on a mountain bike and occasionally ride trails where the PC mode would be dangerous. This would allow you to lock them out for these sections of the trail.
So, why are we changing our thoughts on the dual mode option that we might recommend them for everyone? Second generation power meters are coming. Second generation power meters will measure pedal forces around the entire pedal circle allowing users to measure technique. While our iCranks will be the first on the market others are coming that should perform this service on any crank as they will be incororated in the pedal, cleat, or shoe. Putting one of these meters on the PowerCranks with the dual mode option will give similar benefits as our iCranks. This will really let the PowerCranker know how well adapted they really are and how much more work there is to be done. It will be a great fine-tuning device and the dual mode will facilitate its use. Getting the dual mode option now means it will be possible to take full advantage of these new products when they become available.
Pros: The elite cyclist can build up their PC ability slowly while maintaining their training volume. One doesn't need two bikes to be able to easily ride either PowerCranks or regular cranks. Further, it allows one exercise bike to serve two functions with a single footprint. If you are a rehab professional and need a bike that can do passive range of motion, lock the PC's up and now you have an ordinary exercise bike.
Cons: We recommend that it not be used very often in training because it makes it easy for the athlete to be lazy. To much use can slow down and limit their progress.
Our standard spider is a one size fits all that can accommodate 110, 130, and 135 BCD chain rings. However, to use 110 chain rings when the small chain ring is smaller than 38 teeth requires shims to move the small chain ring away from the spider so the chain can drop down. This changes the derailleur throw and a few users with wider chains have found their chains cannot be made to fall down despite using shims. This option simply allows one to use compact chain rings just as they are used to doing now. If you know you will be using compact chain rings and will never need to use other chain rings then this would be an excellent option as we simply remove the 130 and 135 lengths of the spider. This would slightly reduce the weight of the cranks also.
This option simply allows one to use a three chain ring system. The small chain ring adapter size is a 74 mm BCD 5 bolt pattern and is combined with our standard spider which gives the rider three different chain ring combination choices in one spider, 110/74, 130/74, and 135/74.
This attachment simply allows to extend the length of the standard cranks to as long as 220mm, or longer with special order. Call for availability.
PowerCranks must be mounted to a standard bottom bracket we make five types for the three most common standard bicycle bottom brackets and for two different ones frequently seen on high end exercise bikes. These choices are:
•tapered square - this has been around "forever". This is our basic BB type.
•Shimano V1 octalink - Shimano has made two different versions of the octalink system. We work with the road/track model.
•ISIS - a new "standard
• a heavy duty hexagon used on the Lemond Revmaster classic. ($25 upcharge - includes special spider for Lemond classic Revmaster.)
Yes, we have and can do special orders. We have made both basic, Xlite, and our long adjustable cranks to go as long as 250 mm. We have made basic cranks to go as short as 85 mm for those concerned about the wider 'Q' of our long-adjustable crank. And we have made special spiders to accomodate track chain rings (144 BCD) and very small chain rings. Call if you have a special need for a price quote.