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Sprocket's Pitch

09/02/2013 5:48 AM

is it possible to find pitch of sprocket with no. of teeth in hand??????????

how???????

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#1

Re: sprocket's pitch

09/02/2013 5:50 AM

Yes, though it would be easier to measure the distance between the centres of the pins in the chain that passes over it.

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#2

Re: sprocket's pitch

09/02/2013 5:56 AM

What's with the excessive punctuation? It is highly unprofessional.

The number of teeth does not tell the pitch; the center-to-center distance does, and can be measured. In the U.S., the first digits of the sprocket number usually tell the pitch directly, with some "code" involved.

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#3
In reply to #2

Re: sprocket's pitch

09/02/2013 6:01 AM

formulas??????????

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#4
In reply to #3

Re: sprocket's pitch

09/02/2013 6:06 AM

p = 2 r sin (pi/n).

Once again, what's with the unprofessional punctuation?

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#7
In reply to #4

Re: sprocket's pitch

09/02/2013 6:11 AM

p refers to pitch

r refer ?

n refers rpm

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#9
In reply to #7

Re: sprocket's pitch

09/02/2013 6:20 AM

r = radius
n = number of teeth

Rpm is completely irrelevant at this stage.

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#11
In reply to #9

Re: sprocket's pitch

09/02/2013 6:30 AM

only value I know is no. of teeth.

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#19
In reply to #11

Re: sprocket's pitch

09/03/2013 10:05 AM

Too bad. That's not enough to determine an answer. What - is there no measuring tool available there?

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#5
In reply to #3

Re: sprocket's pitch

09/02/2013 6:07 AM

Imagination?????????????????????????????????????????????????????

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#6

Re: sprocket's pitch

09/02/2013 6:10 AM

If you have the sprocket in hand, roll it very hard. Then measure the space between skin punctures.

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#8
In reply to #6

Re: sprocket's pitch

09/02/2013 6:17 AM

...then multiply the distance between puncture marks by the difference in radii of the tooth tip radius and the chain centres radius.

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#10
In reply to #8

Re: sprocket's pitch

09/02/2013 6:27 AM

only value I know is no. of teeth.

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#12
In reply to #10

Re: sprocket's pitch

09/02/2013 6:30 AM

The pitch cannot be deduced from that alone.

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#13
In reply to #12

Re: sprocket's pitch

09/02/2013 6:33 AM

ok.

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#14
In reply to #12

Re: sprocket's pitch

09/02/2013 6:49 AM

what specification required?

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#15
In reply to #14

Re: sprocket's pitch

09/02/2013 6:58 AM

Size.

Good grief; see the formula already given. Notice the r in it.

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#17
In reply to #14

Re: sprocket's pitch

09/02/2013 3:49 PM

平靜地走開

The above can be translated to :GO AWAY QUIETLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

TAKE YOUR SPROCKET WITH YOU.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Guru
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#18
In reply to #14

Re: sprocket's pitch

09/03/2013 10:04 AM

...preferably to the local bicycle repair shop. There has got to be someone there who can help.

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Guru
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#16

Re: sprocket's pitch

09/02/2013 7:07 AM

Take the sprocket to the local bicycle repair mechanic's premises, and ask there.

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