Tandem Bikes

[WADMW]

Could someone help me with how 'Independent Pedaling System' in a tandem bike works, there are two mechanisms I know of, the Da Vinci's tandem and the Afar IPS. I know that coasting is possible with the free wheeler or the uni-directional bearing that they have used, but how is Independent pedaling possible???

 

[WADMW]

Could someone help me with how 'Independent Pedaling System' in a tandem bike works, there are two mechanisms I know of, the Da Vinci's tandem and the Afar IPS. I know that coasting is possible with the uni-directional bearing that they have used, but how is Independent pedaling possible???

 

[ctopher]

I'm not clear about what you mean by Independent pedaling.
You want to be able to coast with one and still pedal with the other?
I have not seen this and not sure if possible.

Chris, CSWP
SolidWorks '16
ctophers home
SolidWorks Legion

 

[JStephen]

Didn't you just ask this question, or something awfully similar?

http://www.eng-tips.com/viewthread.cfm?qid=410503

Are you buying a bicycle or inventing a bicycle or what?

 

[WADMW]

Yeah, i asked about Independent Coasting, but there is a difference between Independent pedaling and independent coasting? Yeh, i'm gonna invent one, if there isn't one..

 

[IRstuff]

Please refrain from double posting

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

faq731-376 forum1529

 

[EdStainless]

Go to the links in the other post to Bilenky Bikes. They do it by adding a freewheel to the crossover chain.
If it is a single cog freewheel you can coast or peddle independently but both riders have the same gear ratios. If the freewheel is multi-cog with a derailleur then both riders can choose separate gear ratios also.
Yes, it is a lot of chain and hardware, but it works.

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P.E. Metallurgy, Plymouth Tube

 

[monkeydog]

Hmmm "Independent Coasting" that is exactly the reason I refuse to let my wife talk me into a tandem bike.

 

[EdStainless]

Monkey, that is also why I don't have this on either of my tandems, she at least have to be moving her feet!

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P.E. Metallurgy, Plymouth Tube

 

[3DDave]

IRStuff, too late. This seems like the 5th time he's asked substantially the same question without providing any clarification on the requirement that multiple pedals drive a single output. Previously he wanted to detour to electricity production, but has shifted gears.

Maybe this will steer him to at least creating a clear explanation of the goal(s):

http://www.lowtechmagazine.com/2011/05/pedal-powered-farms-and-factories.html

 

[WADMW]

Edstainless,
Thanks alot!