×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Combining Mechanism

Combining Mechanism

Combining Mechanism

(OP)
Is there a possible mechanism to combine two shafts which drive at different speeds, even with different torque ratios?

RE: Combining Mechanism

Look-up "differential gears".

RE: Combining Mechanism

WADMW,

Can you provide a diagram?

--
JHG

RE: Combining Mechanism

(OP)
Hmm.. I just have a rough idea..
Something like this



RE: Combining Mechanism

(OP)
I'm just hopping to combine two bikes mechanically, to get a single output

RE: Combining Mechanism

I like differential gears. Then if I stop, the other guy has to work twice as hard.

RE: Combining Mechanism

WADMW,

Are the wheels turning at different speeds, or are there multiple power inputs at different speeds?

--
JHG

RE: Combining Mechanism

I guess that a couple of small fluid torque converters could do this.

RE: Combining Mechanism

A bit lossy though.
OP. Your diagrams don't show an output. Is it a shaft?

je suis charlie

RE: Combining Mechanism

Capitalism*. The bicycle drives are a means of production- the direct shaft of work of a single cycle does whatever, grinding corn, generating electricity, turns an AC compressor or fans a banker. Part of the proceeds from market sales for fiat currency compensate the cyclist and the profits are used to purchase the desired product of combined cycling effort. If the rider provides the bike, and uses a phone app for on-demand staffing, you could call it CyclUber, or Blyft.

*the side effects of capitalism are widely known and broadly denied at the same time.

RE: Combining Mechanism

(OP)
drawoh,
yeah, they are turning at different speeds, and the differential won't work, coz there has to be a constant ratio between the two inputs.

gruntguru,
Sorry about the sketch, yeah there has to be an output shaft from the combining mechanism unit.

RE: Combining Mechanism

Why not a common belt driven shaft?

RE: Combining Mechanism

So this is like everyone rides their bike up to a long roller like on a chassis dyno, puts their bike on the roller and pedals while recording their miles on their cells so they can bill accordingly?

RE: Combining Mechanism

WADMW,

So the wheels are inputting torque?

Are the ratios fixed or variable?

--
JHG

RE: Combining Mechanism

How about crank driven alternators/generators combining into a battery. If it's on a tandem bike, the battery could drive a motor.

RE: Combining Mechanism

Or, how bout just riding next to your mate? If you're camping, the strong rider gets the bigger bag, and eases up on the hills. Face to face conversation is possible 2 abreast, and the stoker is not stuck looking at the same arse all day.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources