Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: bj on December 20, 2013, 03:15:47 pm

Title: Water Cooled Back Plate on Nitro engines
Post by: bj on December 20, 2013, 03:15:47 pm

Looking at the Weston UK Marine Engine site I noticed that their range of marine engines have water cooled back plates. See: http://westonuk.co.uk/westonuk2_101.htm (http://)

Anyone come across water cooled back plates before? Any major advantage? Any opinions?

Title: Re: Water Cooled Back Plate on Nitro engines
Post by: Netleyned on December 20, 2013, 04:52:11 pm

Can't get the link to work on my fone but found the site.
Anyone on here using Wundabond?

Ned

Title: Re: Water Cooled Back Plate on Nitro engines
Post by: Leaky Bottom on December 20, 2013, 05:59:33 pm

Yes I've got a old OS max 10 & 30 with water cooled back plates.
Don't know of any advantages thou

Title: Re: Water Cooled Back Plate on Nitro engines
Post by: tr7v8 on December 20, 2013, 08:58:29 pm

Water cooled backplates will improve overall efficiency. The charge through the carb goes via the crankcase & up into the ports. By cooling the backplate you'll increase the charge density increasing the performance. A side benefit is that if the exhaust is that side then you'll reduce the temperature gradient across the cylinder which improves the piston fit & reduces the chances of a hot seize.