[modeleng] Re: sprockets

Tel,
Not knowing quite what you want to achieve, or how you are planning to do
it, this might be a bit of a silly question.

But, could you not use a 120 tooth sprocket, and either gear it 2:1, or fit
it with a simple escapement such that it indexes the rotation of the
sprocket by half a chain-pitch?
The latter could be quite easy and might save you making all those teeth.

alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

www.alanstepney.info
Model Engineering, Steam Engine, and Railway technical pages.



----- Original Message ----- 
From: "Terry Lane" <tel@xxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, August 31, 2004 10:21 AM
Subject: [modeleng] Re: sprockets


That would be too easy Jeff. Actually I had a look & the biggest 1/4" pitch
sprocket my supplier lists is 125t - fair way short of the 240 odd teeth I
need




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