Model Boat Mayhem - Forum

Mess Deck: General Section => Chit-Chat => Topic started by: Andyn on March 30, 2019, 01:06:58 AM

Title: The largest, most powerful model engine I've ever owned...
Post by: Andyn on March 30, 2019, 01:06:58 AM
The engine for a boat I'm building arrived today, thought I'd share with the masses %)


This thing is a 35cc Magnum disc valve motor, is putting out 11.5hp at 18,000rpm. The carb is the size of a 21 crankcase, with a venturi the size of a 45 sleeve. I haven't weighed it yet, but it's not exactly what you'd call light...


Shall be going in a 56" mono, expecting speeds well over 60mph


(https://www.modelboatmayhemimages.co.uk/images/2019/03/30/IMG_20190330_001607.jpg)
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: Martin [Admin] on March 30, 2019, 03:46:12 AM
 
.... does it have a kick start?!   :o
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: Netleyned on March 30, 2019, 07:02:54 AM
Naah, Cartridge Start  :D :D :D :D


Ned
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: Andyn on March 30, 2019, 09:16:19 AM
Now it's daylight, the boat it's going in. German Shepherd sized pooch for scale...


(https://www.modelboatmayhemimages.co.uk/images/2019/03/30/IMG_20190330_091218.jpg)
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: JimG on March 30, 2019, 10:00:14 AM
Not for boat use but here is my largest engine. A UMS 7-90, a 90cc 7 cylinder petrol 4 stroke radial, turns a 24 x 10 propellor. Fitted to a quarter scale Stearman. A short video of it being test run.https://www.youtube.com/watch?v=6CDbE7LtzgU (https://www.youtube.com/watch?v=6CDbE7LtzgU)
Jim
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: tigertiger on March 30, 2019, 01:21:04 PM
Nice  motor Jim, sounds awesome :-)) . I would love to video of the finished model flying when you get to that point.
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: JimG on March 30, 2019, 06:42:30 PM
Thanks, the plane is being refurbished at the moment but it may be ready to fly for next weekend if the weather is good.
Jim
Title: Re: The largest, most powerful model engine I've ever owned...
Post by: SteamboatPhil on March 30, 2019, 07:39:17 PM
I always said you were a bit mad Andy, but what a project  :-))