italie |
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MAME owes italie many thank yous, hah
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Mechanical aptitude experiment.
#325756 - 05/09/14 02:49 AM Attachment: belt.jpg 44 KB (0 downloads)
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You have two systems, "A" and "B". A drive pulley at "1", and a follower pulley at "10". Your size ratio will follow the naming convention at 1:10 in both systems. System "B" is identical to system "A" in all dimensions, with the exception that an idler pulley was added at "2" and the belt routed around it.
Please identify the effect the introduction of "2" has on the system, specifically the effect on "10". You don't have to be specific.
[ATTACHED IMAGE]
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Re: Mechanical aptitude experiment.
[Re: italie]
#325757 - 05/09/14 03:20 AM
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> You have two systems, "A" and "B". A drive pulley at "1", and a follower pulley at
> "10". Your size ratio will follow the naming convention at 1:10 in both systems.
> System "B" is identical to system "A" in all dimensions, with the exception that an
> idler pulley was added at "2" and the belt routed around it.
>
> Please identify the effect the introduction of "2" has on the system, specifically
> the effect on "10". You don't have to be specific.
Reduction in belt whipping for example B. Followers/idlers are commonly used to maintain drive tension.
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| redk9258 |
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Regular
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Re: Mechanical aptitude experiment.
[Re: italie]
#325758 - 05/09/14 05:08 AM
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It adds an additional bearing that will eventually fail. Both 1 and 10 pulleys still have the same ratio.
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| Pi |
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Allergic to life
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Re: Mechanical aptitude experiment.
[Re: italie]
#325763 - 05/09/14 10:10 AM
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> Please identify the effect the introduction of "2" has on the system, specifically
> the effect on "10". You don't have to be specific.
10 will be pleased because he had to bear with 1 and suddenly whoa a whole double 2 appears. 1 will be jealous and will send a message to 10 saying "we have to talk". While I don't have to be specific, I'd say 1 will be twice the angry because, as the driver, can't take alcohol.
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Re: Mechanical aptitude experiment.
[Re: italie]
#325764 - 05/09/14 11:15 AM
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> Please identify the effect the introduction of "2" has on the system, specifically
> the effect on "10". You don't have to be specific.
In that arrangement it reduces contact patch of the belt on "10" and hence reduces tractive effort at the same belt tension. OTOH "2" could be a tensioner element or something which would allow you to run it with higher belt tension without having to mount the drive or load on the tensioner, and hence get more tractive effort.
Or am I missing something obvious?
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| italie |
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MAME owes italie many thank yous, hah
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You've all done well.
[Re: italie]
#325765 - 05/09/14 02:07 PM
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> You have two systems, "A" and "B". A drive pulley at "1", and a follower pulley at
> "10". Your size ratio will follow the naming convention at 1:10 in both systems.
> System "B" is identical to system "A" in all dimensions, with the exception that an
> idler pulley was added at "2" and the belt routed around it.
>
> Please identify the effect the introduction of "2" has on the system, specifically
> the effect on "10". You don't have to be specific.
All valid observations from everyone, but Vas had the observation I was waiting for someone to say. Just trying to assess how obvious this should be to the average Joe. Sort of base-lining how ballistic I'm going to go this morning.
(...and Pi, I don't know where you got your engineering degree, but you really know your stuff...)
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| Tomu Breidah |
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Re: Mechanical aptitude experiment.
[Re: italie]
#325768 - 05/09/14 04:44 PM
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> You have two systems, "A" and "B". A drive pulley at "1", and a follower pulley at
> "10". Your size ratio will follow the naming convention at 1:10 in both systems.
> System "B" is identical to system "A" in all dimensions, with the exception that an
> idler pulley was added at "2" and the belt routed around it.
>
> Please identify the effect the introduction of "2" has on the system, specifically
> the effect on "10". You don't have to be specific.
Based on the position of "2" would the belt.... or all the pulleys be moving counter clock-wise?
Or would that even matter? Just thinking about the location of "2" and how the belt might act during high speeds. 
/layman guessing
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Re: You've all done well.
[Re: italie]
#325772 - 05/09/14 06:52 PM
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> (...and Pi, I don't know where you got your engineering degree, but you really know
> your stuff...)
What does the word 'engineering' mean?
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GatKong |
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> ... specifically the effect on "10". You don't have to be specific.
It will.
Was that specifically nonspecific enough?
[ATTACHED IMAGE]
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| italie |
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MAME owes italie many thank yous, hah
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Re: Mechanical aptitude experiment.
[Re: GatKong]
#325787 - 05/10/14 04:55 AM
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> > ... specifically the effect on "10". You don't have to be specific.
>
> It will.
>
> Was that specifically nonspecific enough?
one too many babies, baby...
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| Dullaron |
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Re: Mechanical aptitude experiment.
[Re: GatKong]
#325794 - 05/10/14 03:58 PM
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> > ... specifically the effect on "10". You don't have to be specific.
>
> It will.
>
> Was that specifically nonspecific enough?
What was that? 
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| Tomu Breidah |
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Re: Mechanical aptitude experiment.
[Re: Dullaron]
#325796 - 05/10/14 05:45 PM
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> > > ... specifically the effect on "10". You don't have to be specific.
> >
> > It will.
> >
> > Was that specifically nonspecific enough?
>
> What was that?
She was flashing a strap-on because she's not ashamed to be a freak. 
eta: Oops. No. That's just an additional pulley.
Edited by Tomu Breidah (05/10/14 05:47 PM)
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