On Tue, 27 Jan 2004, David Usher wrote:

> Just joined as I am working on a personal project involving meccano,
> especially gears. However I cannot seem to find the actual DP of the
> gears. I think they are 38 DP which makes sense with the 19 teeth and
> mulitles thereoff gears. It makes more sense for the 25/50 than 40 DP.
>
> However, 40 DP is a preferred size to 38 DP. My measuring tackle has
> got me so far, but is not to splitting the difference.
>
> Thanks, in anticipation.

Yes, it's 38 DP.

- Colin Hinz
Toronto, Canada