Thanks again Mark. I need to determine the thread size of the propshaft end as I doubt, being c1950 that it is M4. Here is one I found on eBay

http://www.ebay.co.uk/itm/131269609987?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Neil

HI Neil
Most standard motors 400 - 540 size come with a mount, have a look on ebay, don't buy 'Tuned" type motors, usually on the same shop you will find Huco type couplings these come with sized inserts, one to the motor shaft and the other to the prop shaft thread.

Mark

OK Mark - thanks for clarifying that. I need then, to source a (flexible?) coupling and fabricate some way of mounting the motor. I Imagine this has been done many times before for this model and there may even be a standard parts motor mounting kit? Neil

HI Neil

Sorry for the confusion, the motor must be in a straight line with the prop shaft, both right and left as you look down at it, then in line with the vertical angle of the prop shaft

Mark

How can the motor be both vertical and horizontal when the prop shaft enters the hull at angle determined by the keel guide. As I hope can be seen in the attached photos.

HI Neil

You are right that Sea Scout dates back to the 50's, over the years they must have made thousands, reproduction kits are now in production.

Urgent warning, when you fit the prop shaft, you need the motor and mounting so that they are in line, both vertical and horizontal.

The banana oil you have mentioned is still available from specialist suppliers, the best thing to use is thin epoxy resin, available on line or in shops, if its not runny enough put a few drops of meths in it as a thinner.

The two control systems I have no clue, not even seen one, could I suggest using more conventional systems???

Mark

Many thanks for your swift response. I had not Imagined that the "Sea Scout" was as well known in these circles and I think it is a very solid build (1950's ?) that I have yet to finish. I will investigate motors in due course but must first finish the hull. The original instructions mention coating the inside with 4 coats of "Banana Oil". is such a product still available? if not can you suggest an alternative? I intend to use an Arduino or Raspberry PI micircontroller with GPS to navigate with and will be looking for guidance in this also.

Regards

Neil

HI Impartit.

First of all, welcome to the web site, there is a ton of knowledge around, just ask.

Your Sea Scout is a medium sized model, do you want a cruising boat or one wit a good turn of speed?????

A standard 540 or 400 motor will give you good running without need of a gearbox, 7.2 volt NmHI 4000 / 5000mah battery will give good endurance, the motor should come with a mount, flex coupling to suite, have a look on ebay if your not close to a model shop, or through Model boat mag, Marein modeller mag. Cornwall model boats.

Are you thinking of Radio Control? as most sailing waters are shared with other users.

Hope this helps to start, probably more questions, give us a shout!!!!

Regards

Mark