Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Other Technical Questions... => Topic started by: The Doc on August 27, 2009, 10:39:26 pm

Title: Newby wants info on positioning motor
Post by: The Doc on August 27, 2009, 10:39:26 pm

  Hi All what a fantastic Forum I am building a power boat the hull is Fibre Glass 45in long with 5in stringers I am fitting a 26cc engine what rule should I use to position the motor any help would be appreciated. the photo with the top of shows the stringers pre drilled but my one turned up with no holes at all

Many Thanks

alan@smoothfmlive.com
www.smoothfmlive.com

Title: Re: Newby wants info on positioning motor
Post by: andyn on August 27, 2009, 10:51:32 pm

The engine mount holes are pre drilled in that hull.

Title: Re: Newby wants info on positioning motor
Post by: The Doc on August 28, 2009, 07:33:15 am

Quote from: Andyn on August 27, 2009, 10:51:32 pm

The engine mount holes are pre drilled in that hull.

Hi
As i said in my opening message my hull has turned up without any holes pre-drilld just 2 lengths of plywood 5in apart just need to know the rule of thumb where to mount the motor.

Thanks Again

Title: Re: Newby wants info on positioning motor
Post by: andyn on August 28, 2009, 12:08:37 pm

Ok then, well with everything in it the centre of gravity should be around 33% chord from the transom. I would be willing to hazard a guess at the end of the pullstarter being about 18 - 20 inches from the transom.

Title: Re: Newby wants info on positioning motor
Post by: The Doc on August 29, 2009, 09:03:58 am

Thanks for that Adrian

Alan