any comments on this design?

A general, non-powerplant specific, discussion on airboat technology, ie., hulls, rigging, polymer, etc..
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grey owl
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any comments on this design?

Post by grey owl » Mon Dec 02, 2013 10:44 am

just wondering if anyone has any thoughts on this concept? it would probably not shine in the swamps but im thinking it would work well as a smaller boat for basic transportation in ice, snow, water.
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PeaRiverOpossum
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Re: any comments on this design?

Post by PeaRiverOpossum » Mon Dec 02, 2013 10:49 am

I like it. Beautiful build! I love the colors. What are the details on the motor and all that?

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grey owl
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Re: any comments on this design?

Post by grey owl » Mon Dec 02, 2013 10:58 am

its not my build, a European design that I found surfing.

http://hydrokopteri.fi/index.php?pinc=3

the best I can tell its powered by a herth @50hp. I cant translate the page so details are limited to e pictures.
sorry I cant be more specific.

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Re: any comments on this design?

Post by PeaRiverOpossum » Mon Dec 02, 2013 11:08 am

grey owl wrote:its not my build, a European design that I found surfing.

http://hydrokopteri.fi/index.php?pinc=3

the best I can tell its powered by a herth @50hp. I cant translate the page so details are limited to e pictures.
sorry I cant be more specific.
ahhh I see. Open it in Google Chrome and it will translate it for you.

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Re: any comments on this design?

Post by Alpal » Mon Dec 02, 2013 4:58 pm

Sitting with your back to the icey wind while you toast your hands in the hot exhaust looks like a good idea in that climate...

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Re: any comments on this design?

Post by gobblerD » Mon Dec 02, 2013 5:17 pm

The hull is interesting. The rounded back and it looks like it is foam filled? It seems made for that climate.

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JAMES
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Re: any comments on this design?

Post by JAMES » Mon Dec 02, 2013 7:12 pm

HOW U STEER WHERES RUDDERS
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Bruce
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Re: any comments on this design?

Post by Bruce » Mon Dec 02, 2013 7:19 pm

JAMES wrote:HOW U STEER WHERES RUDDERS
looks like the motor pivots
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Re: any comments on this design?

Post by grey owl » Mon Dec 02, 2013 7:57 pm

if you Google it a couple videos come up on utube "Hydrokopteri Kelirikko 420"

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Re: any comments on this design?

Post by akblackdawg » Mon Dec 02, 2013 8:06 pm

Pretty obvious that the whole thing pivots, cage and all, looks like a outboard style handle going forward into the guys lap, most likely a twist type throttle grip. That thing is cool, i would perfer my heated cab for running snow and ice, but if that hull is light, it would be a super light boat, if aluminum hull, and slick bottom of some sort, bet it would run dry if not loaded to heavy. Economical also to run. I could sell my boat and buy 10 of those, or close to it. Bud
:alaska: If you ain't living on the edge, you're taking up to much space.

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Re: any comments on this design?

Post by PORTOBELO » Tue Dec 03, 2013 5:12 am

grey owl wrote:its not my build, a European design that I found surfing.

http://hydrokopteri.fi/index.php?pinc=3

the best I can tell its powered by a herth @50hp. I cant translate the page so details are limited to e pictures.
sorry I cant be more specific.

That is an approximate translation of the text. ;)
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grey owl
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Re: any comments on this design?

Post by grey owl » Thu Dec 05, 2013 1:07 pm

thanks, I was just thinking for running around close to home something like that would save me cranking up the 540 whern cold but its also hard to justify two boats.
cheers will

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Re: any comments on this design?

Post by akblackdawg » Thu Dec 05, 2013 2:10 pm

grey owl wrote:hard to justify two boats.
cheers will
The fuel economy of the small boat might be enough to justify, especially with the higher prices you have up there. Bud
:alaska: If you ain't living on the edge, you're taking up to much space.

15x8 Alumatech hull, with enclosed cab, aluminum cage, LS 3, 6.2 aluminum block ffi, 2.7 Balistic Box, sensinich superwide 3 blade. Built for year around riding in Alaska

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Re: any comments on this design?

Post by Bob in Canada » Fri Dec 06, 2013 1:54 pm

I'd like to have one . In the videos it seems to handle and corner very well . Hull looks like it floats .
If I owned one I'd think about some type of a real seat . Doesn't look like much planning went into rider comfort .
Some type of windshield would also be nice .
This is just me but a four stroke version would appeal to me a bit more . I'm not a big fan of two strokes .
It seems like it would do the trick and be a lot cheaper to operate than my big boat .
14x8 Diamondback , 2.38-1 Stinger , 350 GM Marine , Sensenich 3 Blade "R" prop

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Re: any comments on this design?

Post by akblackdawg » Fri Dec 06, 2013 2:07 pm

i think the big weakness in the design is that the only contact to support, strength, is the pivot where the motor/prop turns. That one point has to hold the entire weight of the engine, and the forward thrust. I would consider putting a light frame up to the top of the cage with a couple forward struts (headache bars) to give it strenth. Bud
:alaska: If you ain't living on the edge, you're taking up to much space.

15x8 Alumatech hull, with enclosed cab, aluminum cage, LS 3, 6.2 aluminum block ffi, 2.7 Balistic Box, sensinich superwide 3 blade. Built for year around riding in Alaska

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Re: any comments on this design?

Post by grey owl » Fri Dec 06, 2013 3:22 pm

I love the thought that you don't need the extra weight of the rudder but is it strong enough to endure the test of time. I live on an island and am going through freeze up right now so transportation is limited. the marina is 15 miles away so I would only ever use my 16/540 but for working around the bay the design appeals to me. Because it wouldn't be used as a novelty I seriously wonder how strong the mounting system is and if it can handle full time work use for the times of year it is required.

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Re: any comments on this design?

Post by Bob in Canada » Fri Dec 06, 2013 11:29 pm

You'd find out that the mount system suffered from metal fatigue , stress cracks or failure due to the cold about 1/10 of a second after the running engine and prop flew past your shoulder .
I had an engine stand fail in my boat and it was just by the grace of God that I noticed it just before the engine and prop totally broke loose and the slice and dice began . It still turns my stomach when I think of how close my wife and I came it a nightmare event . ( Take a look at the pictures in my photos )
Cold weather can really play hell on steel .
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Re: any comments on this design?

Post by rjbradlow » Sat Dec 07, 2013 2:11 am

grey owl wrote:its not my build, a European design that I found surfing.

http://hydrokopteri.fi/index.php?pinc=3

the best I can tell its powered by a herth @50hp. I cant translate the page so details are limited to e pictures.
sorry I cant be more specific.
Translation:
Hydrocopter

Hydrocopter (real name moottorireki)* is made of metal boats. Snow, ice and water flowing device allows for year-round movement
of water bodies, as well as in open snow-covered land areas safely.

Suitable for.
  • fishermen for use at work
  • for use at work
  • recovering the system, but also on thin ice.
  • travel and transport tool when other mobility equipment no longer work.


Fishermen have access to the device acquisition EU support.

Current soles made of Rymättylä Terhi boat. The dimensions 420x180x40. Helicopter with an approximate weight: 180 kg.
The base material of polyethylene plastic consumption.

Thrust equivalent to 3-blade carbon fiber propeller, which is used by 50hp HIRTH F23LW air-cooled 2-stroke petrol engine.

Engine Features:
  • electric and manual start
  • Electronic reliable CDI ignition ensure operation of the engine, even when the battery would go broke.
  • -maintenance Mikuni slide carburettors.
  • G23 V-ribbed belt drive.
  • the propeller blade angle to be adjusted.
  • 250w 12v electrical system power (lights, etc.)
  • propulsion 2-stroke-gas mixture 98E

Source: Google Translate http://translate.google.com (Finnish to English)
*moottorireki is actually two words:
Moottori: Engine
Reki: River
---
Terhi Boats ... Unsinkable !
http://www.youtube.com/watch?v=cSwumPiCN_U
---
Yeah, We've got those too...
http://www.bostonwhaler.com/page.aspx/p ... haler.aspx

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