power curved crank bicycle-Power up 25%-30%

No upper dead cent Power Curved Crank
SGS Repoet-The torque for works due to the obvious improvement between 0～60 degree angle.

http://www.e-chien.com.tw

Category:

Sports

Tags:

• crank
• bike
• bicycle
• Upper dead point
• curved crank
• power up
• MTB

[MrMeanderthal]

this is a joke right? a crank arm can be any shape you want but it makes no difference at all.. all that matters is the distance between the two points.. 172.5 mm is 172.5 mm no matter how you get there..

[celine8168]

@MrMeanderthal Pedaling on UDC and 2’oclock direction by using straight cranks, they both under lever theory but why the effort saving is different？Why are different provincial efforts between UDC and 2’oclock direction on Lever theory?

[MRryuhayabusa]

combine that with rotor q ring and off u go



[celine8168]

@MRryuhayabusa Two of my friends use originally is Q-ring, but they change the curved crank, and feel very happy.

[thePavuk]

Basic physics and dynamics say that there is no "power" increase because IF the crank is solid then you can replace curve with straight line between center of rotation and point of force for counting moments and it will be same in all positions. Difference is only in lower stress on crank. Sorry. It's nice, it's cool, but it's useless.

[celine8168]

@thePavuk So Pedaling on UDC and 2’oclock direction by using straight cranks, they both under lever theory but why the effort saving is different？The sickle crank’s pedal is on the UDC position, but the force arm has already move to 2 o’clock direction.An England famous E-BIKE company had also approved this sickle could increase the battery capacity to 18%.

If you just guess and did not do the experiment , it is a scientific superstition of the two points of leverage.

[ClownFight]

Increase profits by 25% to 30% with our revolutionary sickle crank design. The design works by targeting the feeble minded who see the art and the beauty of the curves and flowing lines of the magnificent sickle crank. What they are unable to see is the invisible line that forms the moment arm, a concept they have never heard of in Art school. Unburdened by the mysteries of physics they will buy this crank and feel a power increase directly related to the reduced weight of their wallet. Genius!

[buioso]

@celine8168 MrMeanderthal is right, trust me. The curved arm is even worst than the straight one, needing more material (and so weight)

[Brosnake9000]

@celine8168 Physics vs a bunch of words you though strung together? I'ma go with physics.

[Cokoholicar]

@MrMeanderthal

hahahaha so true, I can't believe people that think like that actually have the knowledge to make a 3d model, it's insane

[gglen2141]

My first thought was along the line of many posts here. The shape is irrelevant as it is just a fancy way of getting from point A to point B. (crank to pedal = Xmm) BUT. Then I thought about sword design. WHY does a curved blade cut more efficiently?? Shouldn't it be a function of distance from handle to cut point x speed?? But it's not...........

[SGTMARSHALL1]

@korsez You have never tried them have you ? not one person here who has treid them has placed a negative comment ! Well here is your chance, I will ship 1x Limited Edition complete set of Cranks to the first person with the balls to try them. The first person to send me a personal message with shipping details will receive a set for free ! After you try them you have to comment here if they work as described or not. Im not like you backseat drivers, I put my money where my mouth is !

[korsez]

@SGTMARSHALL1 go play with your magic crank, wtf dude do you really don't understand???? Pedaling this crank will give the same amount of power and the moment of transferred power will be the same as in normal cranks

[SGTMARSHALL1]

@korsez You cant add more curves, you will counter the effect, but you wouldnt know that because you have never tried it ! Go play with crayons and stop wasting my time

[SGTMARSHALL1]

@17473039 Nuclear power is the system that turns the ??? Propeller Blades ! You are a smart cookie, I almost under estimated you Almost, Epic fail Lmao