John Mill's twin engine Geo - First Splash

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bmcelya
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Joined: February 18th, 2012, 1:12 pm

John Mill's twin engine Geo - First Splash

Post by bmcelya » August 26th, 2012, 7:00 pm

Hi Folks,

My friend John Mills decided today Sunday, was the day to get the hull wet. Here are some images from it's first few minutes on the water. It runs strong, and on open water special attention will be in order to keep from collapsing the front skirt from overspeed. It's a gutsy load hauling Sevtec, and a great day to see it finally skim along. I'll try for some video next time. I believe there are some progress photos on file at the yahoo site if you want to take a look at the build. Plans were closely followed and it flies great so far. Not being many twin engine versions around, we had nothing more to follow than what Barry has on paper. John has done a great job on this one.

Thanks to Barry Palmer, John Carter, Bryan Phillips, and all who contributed their knowledge.

Specs: Hull 8' x 18'
Geo Metro 45hp thrust
20hp Briggs lift
Skirt material - Standard 18oz.
Steering - 120 degree jetski box

http://www.pbase.com/bmcelya/mills_geoduck&page=all

See you on the water,
Bruce the helper

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bphillip2
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Re: John Mill's twin engine Geo - First Splash

Post by bphillip2 » August 26th, 2012, 9:59 pm

I hate to see folks pulling on unguarded machinery. Nice pictures.

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jchovernut
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Location: Longwood, FL
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Re: John Mill's twin engine Geo - First Splash

Post by jchovernut » August 27th, 2012, 12:25 am

All Right!! See folks, this is how it's done. First, John tested in a pasture and herded horses, then he got into a calm pond to 'test the waters.' Now he's able to reliably take it into moving water with confidence!

Wish I was there for the Christening!! Hope to maybe see you guys over at Hoverally next weekend if I can get another pilot to take the last day of my trip on Saturday. I see John finally got the Trailer-O-Saurus together...pretty slick with the sliding wheel carriage. Bryan might take note for the Explorer Rescue craft's dry launch capability. Folding sidebodies would make a nice addition to that rig!

Bravo...and it was a privilege to lend a hand when I could. ...now get that fishnet over those guards!!

John Carter
John Carter
SEVs: Vanguard, FanTastic, Prospector, Explorer
Others: StarCruiser, UH-18P, RX2000
http://www.hovernut.com

gone7
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Re: John Mill's twin engine Geo - First Splash

Post by gone7 » August 27th, 2012, 6:43 pm

Very nice! It's always a pleasure to see a persons project come together successfully.

I also like the sliding axle trailer idea. I'd be interested in seeing more about that. Are there any build photos of the trailer?
Image
Guy Fichtelman
Sevtec Builder and Pilot since 2001.
http://www.hovercrafter.com
https://www.facebook.com/Hovercrafter

bandit1538
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Joined: February 15th, 2012, 9:52 pm
Location: Skamokawa Wa.

Re: John Mill's twin engine Geo - First Splash

Post by bandit1538 » August 27th, 2012, 11:41 pm

gone7 wrote:Very nice! It's always a pleasure to see a persons project come together successfully.

I also like the sliding axle trailer idea. I'd be interested in seeing more about that. Are there any build photos of the trailer?
I was also thinking about a sliding axle trailer and I also would like to see some photos of one, my guess is that you pull a pin or two then lock the electric brakes and back up to move the bed or use an electric winch to move the axles, or use a reversible motor to a long "All Thread" bolt that goes through nuts wielded to the axle frame. If using the brakes then I would think you would have to have a roller under the frame to keep the bed from digging in but if using a winch or All Thread bolt on the axles you wouldn't because only the axles would be moving.
I plan to build a trailer for an 18' Prospector.
But I think a swing tongue trailer (fly on-fly off) scaled up to fit an 18' craft may be quicker and cheaper to build.
Pat
If it aint broke, don't fix it.

gone7
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Re: John Mill's twin engine Geo - First Splash

Post by gone7 » August 28th, 2012, 3:45 pm

Pat,

Never thought about the use of electric brakes in that situation... good thinking! The swing tongue trailer does look interesting also. It appears to make unloading a breeze, but from what I've seen it wouldn't really be an advantage for loading. Or maybe I've missed something?
Image
Guy Fichtelman
Sevtec Builder and Pilot since 2001.
http://www.hovercrafter.com
https://www.facebook.com/Hovercrafter

jetnoise
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Joined: March 22nd, 2015, 2:44 pm

Re: John Mill's twin engine Geo - First Splash

Post by jetnoise » March 7th, 2016, 7:47 pm

I've thought about the moving axle on my trailer also I was planning on using a screw drive from a old garage door opener and replace the motor with with a 2500 lbs 12 volt wench.

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