Topic: my twin strimmer air boat (Read 9212 times)

edible_engine · « **on:** July 06, 2007, 06:37:59 pm »

i recently got two homelite trimmers rather that macking a water propped boat i opted to make an air boat as i thought it would be cheaper and simpler here are the pics so far.

Martin (Admin) · « **Reply #1 on:** July 06, 2007, 08:53:43 pm »

Man that BIG and very dangerous looking!!
Can I have a go when it's finished?!?!

martno1fan · « **Reply #2 on:** July 08, 2007, 09:44:23 pm »

very interesting concept, ive seen a cpl of builds using twins and even one that ran two engines back to back .thats one as a puller and the other a pusher , not sure how well it will work but i cant wait to see how she goes.heres a very usefull build thread for you check it out.
http://cajungatorairboats.com/v-web/bulletin/bb/viewtopic.php?t=116

J.beazley · « **Reply #3 on:** July 08, 2007, 09:52:44 pm »

Looks like a very interesting build and its coming on nicely, just a thought its going to be very hard to get both engines to run similar rpm together then again ive never seen a twin engined airboat either.

nice fresh ideas good thinking

Jay

catengineman · « **Reply #4 on:** July 08, 2007, 09:59:08 pm »

I would think that independant engines would assist in turning such a beast

And like a hovercraft to stop it you will have to 'about turn' quickly

something I was never very good at !

Richard, just my thoughts

edible_engine · « **Reply #5 on:** July 08, 2007, 10:58:58 pm »

Any one no where i can get 2 prop hubs made ???

heres the plans

HS93 (RIP) · « **Reply #6 on:** July 08, 2007, 11:16:45 pm »

Don't know whether you have thought about some bracing as they are big motors to stop the mounts moving sideways and breaking the joints. just a thought , anyway you could use piano wire to brace. not a very good drawring
Peter

banjo · « **Reply #7 on:** July 08, 2007, 11:40:20 pm »

Fantastic....

My late Uncle Charlie was working on a similar project when he was taken..

edible_engine · « **Reply #8 on:** July 08, 2007, 11:50:15 pm »

i was going to put a x in the middle of it out of wood.

banjo · « **Reply #9 on:** July 08, 2007, 11:57:58 pm »

I shall watch your progress....
I remembered you were making some model props previously....how did they turn out?

Why not just try it with one engine at first..get that running well and then make model Mk II with two engines...

edible_engine · « **Reply #10 on:** July 09, 2007, 10:16:10 am »

i never did make a tug in the end i have most of the parts to make one now il get some pics of the props i made.

edible_engine · « **Reply #11 on:** July 10, 2007, 11:30:51 pm »

just got an email back from a seller on ebay who i asked to Price up the prop hubs in the picks it came to £30 + vat + postage is that a bit steep ??? ???

tobyker · « **Reply #12 on:** July 13, 2007, 11:08:17 pm »

For a prototype twin-engined airboat see the gallery at Canadianairboats.com. she is 30' x 16'.

glennb2006 · « **Reply #13 on:** July 23, 2007, 08:35:09 pm »

Quote from: edible_engine on July 08, 2007, 10:58:58 pm

Any one no where i can get 2 prop hubs made ???

heres the plans

Give Andy Payne a shout, always handy for the odd bits and bobs you need making up:

Andy Payne www.omra-uk.org/GTE 01621 891455 (Great Totham, Essex)
Watercooling conversions for all sizes of car and aero engines, manifolds, couplings, rudders etc. Z class tuned pipes and gearboxes - a specialist in one-off engineering.

Glenn

edible_engine · « **Reply #14 on:** July 28, 2007, 12:28:44 am »

cheers

edible_engine · « **Reply #15 on:** August 28, 2007, 02:57:46 am »

more pics just need the 2 new props and petrollines what shud i use becuse the petrol makes the silicone tube go spongy and weard and the thinest plastic tubing at b&Q is to thick ive herd of tygon tubing but wher do i get it from ?

tigertiger · « **Reply #16 on:** August 28, 2007, 04:04:18 am »

Quote from: edible_engine on August 28, 2007, 02:57:46 am

more pics just need the 2 new props and petrollines what shud i use becuse the petrol makes the silicone tube go spongy and weard and the thinest plastic tubing at b&Q is to thick ive herd of tygon tubing but wher do i get it from ?

Have you tried a lawn mower shop or even a motorcycle shop.
Some bikes still use plastic fuel lines.

It is very flexible when warmed in a bowl of very hot water.

martno1fan · « **Reply #17 on:** August 28, 2007, 08:46:58 am »

Please tell me your not going to run that boat with the servos exposed like that? airboats flip believe me i have one and when you flip thats the end of your expensive servos and any other electrics that arent in a water tight box.you need tygon fuel line for petrol motors the stuff from the mower shop tends to go hard and brittle after a while.heres a link to tygon tube.
http://www.prestwich.ndirect.co.uk/zenoahmarineengines.htm

edible_engine · « **Reply #18 on:** August 28, 2007, 12:43:33 pm »

thanks its a bit expensive but oh well. as for the servos i usually take them apart and put more white grease in the gears and i coat the out side in epoxy and i cut a slice of fuel tube and put it under the servo horn. some of my boats have been flipped along time and the servos have been fine.

martno1fan · « **Reply #19 on:** August 28, 2007, 01:53:36 pm »

dont use grease it doesnt work best thing to use is corosion x or similar from any motorcycle shop,simply spray the insides of your servos and rx and all plugs etc and 100% waterproof even in salt water

.
http://cgi.ebay.co.uk/ACF50-ANTI-CORROSION-RUST-SPRAY-ACF-50-HONDA-YAMAHA-BMW_W0QQitemZ110162779548QQihZ001QQcategoryZ25644QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

edible_engine · « **Reply #20 on:** August 28, 2007, 07:53:29 pm »

i only pack the gears with white grease not the rest.

martno1fan · « **Reply #21 on:** August 28, 2007, 08:33:57 pm »

why ? just use the stuff i linked it lasts a season and the can will last years.

edible_engine · « **Reply #22 on:** September 04, 2007, 09:39:31 pm »

the battery's in the video cam wend flat and stooped after a couple seconds i need to repair it after hitting a band make a way to stop the engines and make the rudders bigger anyone now any bigger places around plymouth for model boats plymouth

martno1fan · « **Reply #23 on:** September 04, 2007, 10:29:24 pm »

Sounds awesome ,just set the throttle so you can cut the engines with the throttle servo from the radio.if your not intending to run on land extend the rudders into the water a bit that will help steering a lot !!

edible_engine · « **Reply #24 on:** September 04, 2007, 11:53:21 pm »

here yah go guys sory about the quality it was done on a fone
http://www.youtube.com/watch?v=wZmeZYN8Mm0

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Author Topic: my twin strimmer air boat (Read 9212 times)

edible_engine

catengineman

edible_engine

banjo

edible_engine

banjo

edible_engine

edible_engine

edible_engine

edible_engine

edible_engine

edible_engine

edible_engine

edible_engine