Technical, Techniques, Hints, and Tips > The "Black Arts!" ( Electrics & Electronics )
First project MTB
norfolknewbie:
I have bought on e-bay a 39" GRP flat bottom MTB type hull and was wondering about the best combination of motor, shaft and prop to use. ( plus a good source to buy them from )
Is there a good beginners book to read for this sort of project as I dont have a clue about the angles of the prop where it penetrates the hull, distance and size of rudder etc.
Many thanks from a complete novice, Jim!
malcolmfrary:
Have a look here.
http://pt-boat.com/
Tug:
Jim! Don't look there you will only be decimated?
If its a first boat and you want to have fun then go for a single motor and prop angled with reference to the prop size and the motor height, but remembering that at rest you want the inside of the propeller shaft above water so it can't seep into the hull.
My patrol boat has three different motors/shafts and props, in a 3 foot boat there ain't much room but it goes well,
in spite of the fibreglass hull being a crap moulding, can I say that? Certainly did not qualify the time and effort but it worked,
norfolknewbie:
Yes....it was certainly a lot of reading to start with, but fascinating.
Can we start with a motor size and I will work from there? I am not looking for any great speed as the local boating lake at Sheringham isnt that big!. Cheers, Jim
ambernblu:
Jim,
There's a useful source of beginner info on Martin's main Mayhem site - http://www.modelboatmayhem.co.uk
Have a look under Technical bits at 'Starting in Model Boats', Electrics, Motors etc. As Tug suggested, a single motor will cause less hassle and at least allow a less sharp learning curve to tackle as you will need to understand and install all the other 'bits and pieces' as well! Keeping it simple first time around will be a bonus.. ;D
Not much help, but I haven't bought anything more powerful than a 5 Pole 545 motor, which i have in two of my fast boats, but they are both less than 30" in length and consequently will be a lot lighter than the boat you are planning, so would suggest you buy bigger for a single shaft drive.
Cheers, Brian
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