Oops! If only I'd read your reply earlier, Derick... what I did find is a source for surplus Pittman geared motors for under twenty dollars. I chose this 12v, 94rpm motor also because of it's nice mount.
I probably picked up and put back an 150rpm'er,  if need be, I can exchange this one.
The boat carries two 12v, 7Ah batteries.
Thanks,
Dave

Hi All,

Not wanting to set the cat amongst the pigeons ... but...

150 rpm direct drive might well be the 'sweet spot' ...

What we don't ever discuss when it comes to rpm is float immersion, float design and float slip...

Now...  at Paddler Day this year my Dad's Jupiter was commented to be running way to fast but she actually runs at approx 4mph which at scale speed (if my calculator is working as it should) would be 14 / 16knts ... (of the top of my head) ok so slightly out of scale service speed but..... the wheels are approx 150rpm!

Now ... perhaps more focus on the immersion, blade design (flat or spooned) and rpm should all be taken into account. We do it with props so why not paddlers ...?

Just an idea..
Regards,
Kim

Hi PD's & welcome to 2012 for Sunday...... ...... Talisman I think it is a idea........

In OZ we have the Float a Boat company who also market a number of 1:24 scale plans for some of our earlier OZ paddlers & naturally these include design detail of the actual paddles & the nomination of paddle float height & immersion depth etc

Want to start the ball rolling?..........Derek