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-   -   Call me insane... both cranks at 6:00 position? (https://www.bikeforums.net/general-cycling-discussion/240095-call-me-insane-both-cranks-6-00-position.html)

mlts22 10-26-06 01:51 AM

Call me insane... both cranks at 6:00 position?
 
Has anyone heard of a type of crankset/bb which allows pedals to be not at 180 degrees with each other? I encountered someone riding a bike on campus... and coasting with both pedals at around the 6:00 position (not 6 and 12). I couldn't tell what metal the cranks were made out of, but it looked like aluminum, though I'm not sure.

cs1 10-26-06 03:03 AM


Originally Posted by mlts22
Has anyone heard of a type of crankset/bb which allows pedals to be not at 180 degrees with each other? I encountered someone riding a bike on campus... and coasting with both pedals at around the 6:00 position (not 6 and 12). I couldn't tell what metal the cranks were made out of, but it looked like aluminum, though I'm not sure.

Just unscrew one arm and rotate it 180 deg. Viola, instant dumb *ss. Please post the university you attend. That way I can strike it the list of schools my son will attend. LOL :D

All kidding aside, that is a really dangerous idea.

Tim

LWaB 10-26-06 04:19 AM

One option is http://www.powercranks.com/

markhr 10-26-06 04:33 AM


Originally Posted by mlts22
Has anyone heard of a type of crankset/bb which allows pedals to be not at 180 degrees with each other? I encountered someone riding a bike on campus... and coasting with both pedals at around the 6:00 position (not 6 and 12). I couldn't tell what metal the cranks were made out of, but it looked like aluminum, though I'm not sure.

They're awesome - the learning curve is pretty steep as very few people actually have a round pedal stroke, i.e., they're usually mashers. Once you're adapted then they're fine, in traffic, on hills, cornering, everywhere. They make hiking and running a doddle too funnily enough. The great thing is that there's a 90 day money back guarantee on them too so you could have a virtually free trial if you returned them.

www.powercranks.com

http://www.pezcyclingnews.com/defaul...lstory&id=3511
http://www.cyclingnews.com/tech.php?...ws/PowerCranks
http://www.xtri.com/article.asp?id=1829
http://www.velonews.com/tour2005/tec...es/8519.0.html

http://www.google.com/search?sourcei...ker+%2donstage

http://i14.photobucket.com/albums/a3...arksidedos.jpg
http://www.recumbents.com/WISIL/gage...crank%2004.JPG
http://www.pezcyclingnews.com/photos...ks06-drive.jpg

charlisity 10-26-06 08:39 AM

Markhr, are you confined to seated pedaling when both pedals are mounted side by side?

I've used this pedaling system on pedal powered canoes but in that application, standing is not an option, so it doesn't hinder you at all once you get the hang of it.

markhr 10-26-06 09:28 AM

you can pedal pretty much however you want with them - each crank has a clutch so once you've adapted then you'll be pedalling at 180 opposed no problem

videos

beginner powercrank user - cranks not yet 180 opposed
http://www.wts.fr/Photos/TRIATHLONS/...owercranks.JPG

experienced powercrank user - 180 opposed
http://www.pezcyclingnews.com/photos...k-joshbike.jpg

FarHorizon 10-26-06 09:33 AM


Originally Posted by cs1
...All kidding aside, that is a really dangerous idea. Tim

Hi Tim!

The idea seems counterintuitive, but I see nothing inherently dangerous about it. Am I missing something?

Hobartlemagne 10-26-06 09:38 AM

You could coast on a fixie with those.

markhr 10-26-06 09:49 AM


Originally Posted by Hobartlemagne
You could coast on a fixie with those.

welsh texan or tex welshman (unless I'm horribly mistaken) - a few people have them on their fixies - there's even an ultradistance fixie rider who uses them as his primary cranks

john bono 10-26-06 11:13 AM


Originally Posted by mlts22
Has anyone heard of a type of crankset/bb which allows pedals to be not at 180 degrees with each other? I encountered someone riding a bike on campus... and coasting with both pedals at around the 6:00 position (not 6 and 12). I couldn't tell what metal the cranks were made out of, but it looked like aluminum, though I'm not sure.

Maybe he had a busted crank arm.

When I snapped my crankarm clean off I had a pretty weird pedal stroke. I found trying to keep my free foot steady while pedaling with my left just wrecked my cadence all to hell. I wound up pedaling with my left foot, and my right foot kinda jogging alongside.

Hobartlemagne 10-26-06 11:31 AM


Originally Posted by markhr
welsh texan or tex welshman (unless I'm horribly mistaken)

You are absolutely correct, and actually the first person here to notice. The fam has
been here many generations, but we know where we come from!

markhr 10-26-06 11:55 AM


Originally Posted by Hobartlemagne
You are absolutely correct, and actually the first person here to notice. The fam has
been here many generations, but we know where we come from!

awesome, now as long as you're playing rugby (keep the faith) and have joined the local male voice choir then, yeah, downtown Houston could be mistaken for bustling metropolis that is Brecon :p


...or not :rolleyes:

BlazingPedals 10-26-06 12:03 PM

Not with both arms at 6 o'clock, but another crankset where the arms are not locked at 180 degrees apart is Rotor Cranks . Rotors are cammed. With Rotors, the pedal coming back up goes past the top before the pedal going down reaches the bottom. Likewise, when the next pedal comes up, it too goes past the top before the other one gets to the bottom. So there is never a spot where both of them are at a dead spot in the stroke.

mlts22 10-26-06 01:00 PM

markhr has it spot-on. The Powercranks pictures are exactly what I saw.

I feel stupid now...

PS: How are Powercranks on long road rides? Are they better than normal cranks once you are used to them?

markhr 10-26-06 02:02 PM


Originally Posted by mlts22
markhr has it spot-on. The Powercranks pictures are exactly what I saw.

I feel stupid now...

PS: How are Powercranks on long road rides? Are they better than normal cranks once you are used to them?

Thanks but LWaB has dibs methinks

Don't know about that - most people think they're odd when they first see them - although every now and then you get someone who knows what they are(identified by the massive grin and "waddayathink?")

anyway I can't comment on rides longer than 1 hour myself but people have used them for long distance multi-day touring, ironman triathlons, ultradistance cycling and a number of TdF pros use them so...

Hobartlemagne 10-26-06 02:18 PM


Originally Posted by markhr
awesome, now as long as you're playing rugby (keep the faith) and have joined the local male voice choir then, yeah, downtown Houston could be mistaken for bustling metropolis that is Brecon :p


...or not :rolleyes:

Well- I sing backup in a band, and I really like leeks. :D

norsehabanero 10-26-06 08:29 PM

the power cranks are strange looks easy untill you try it very strange

Jarery 10-26-06 09:13 PM

Probably makes a decent anti theft device for snatch and grab thefts while your getting food/water refills at a gas station or corner store :)

v1k1ng1001 10-27-06 12:39 AM

crazy

i am frightened

Sammyboy 10-27-06 02:11 AM

People do sometimes build up their bikes that way with regular cranks, just for the craik. Kangaroo cranks, is the accepted term. I don't think there's any suggestion that it works well or is a good idea, but it's fun to see who can and can't ride a bike like that.

Mentor58 10-27-06 08:43 AM

^^^ That's what was going thru my mind, you would look like you were hopping down the road. Some day if I get really bored, and I double check the coverage on my health plan, I may just try it. I'm just trying to imagine getting started going up any kind of an incline with setup :)

Steve W
Who doesn't bounce the way he did years ago


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