Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: Leaky Bottom on August 29, 2013, 08:46:30 pm

Title: Riva Aquarama
Post by: Leaky Bottom on August 29, 2013, 08:46:30 pm

I built a Riva Aquarama many years ago but never got round to finishing it and using it, I've recently retrieved it from the depths of the loft and intend to get it going.
I built it with twin shafts but didn't put any motors in, I intend to put pulley wheels on the shafts and use a toothed belt to drive the shafts from one motor, could anyone give any advice on what electric motor to use and would any gear reduction be of any benefit.
The hull is 29" long and it is fitted with 35mm props

Regards
Gary

Title: Re: Riva Aquarama
Post by: Martin (Admin) on August 30, 2013, 07:49:44 am

Hi and welcome to the Mayhem!

Pulleys yes but I don't think you need toothed belts really.
Are you thinking of using one or two motors?

Title: Re: Riva Aquarama
Post by: petermun on August 30, 2013, 08:43:30 am

I also have an Aquarama with two motors.   The option I went for was an ACtion mixer unit and it works well.   I forget the Identification  No, but I am sure Dave (ex ACtion) will tell you.   Pete

Title: Re: Riva Aquarama
Post by: Circlip on August 30, 2013, 10:36:36 am

Quote

I intend to put pulley wheels on the shafts and use a toothed belt to drive the shafts from one motor,

  It's gonna turn in one direction a lot easier than the other. A pair of modern electric engines will be (should be) cheaper than timing pulleys and belt. Even using an expensive (Reliable) Act-thingy as opposed to a cheap Honk cong thingy for speed control of two motors.
 
  Regards  Ian.

Title: Re: Riva Aquarama
Post by: Leaky Bottom on August 30, 2013, 05:39:47 pm

Thanks for the replys
 
These are what I had in mind for the belts and pully's using just one motor http://www.mfacomodrills.com/timing_belts_timing_pulleys/timing.html (http://www.mfacomodrills.com/timing_belts_timing_pulleys/timing.html)
I've got controllers from my model flying, no reverse thou.

Title: Re: Riva Aquarama
Post by: Circlip on August 30, 2013, 07:08:11 pm

Both propshafts are going to be rotating in the same direction. Thus turning problems. Dig in on one side and hard on the other.
 
 Reverse on an Aquarama is likely to put the back end under.
 
  Regards  Ian.

Title: Re: Riva Aquarama
Post by: Leaky Bottom on November 06, 2013, 12:46:14 pm

Had a chaange of tack on this and now it's got twin 400 size brushed motors in.
Just waiting for a good day on the local canal
(http://i254.photobucket.com/albums/hh86/Gary-Fisher/DSCF0360_zps61137bcd.jpg)