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Posted By: kk alaska Inflatable Russian Jet Boats - 04/11/18
Put money down the Solar 420 model, at Sportsman show, need to find a 30 HP Jet now. Great video looks like they finally hull built right to not cavitate, should allow a lot of access to skinny water. A lot of performance with a little motor from what I have seen, but well see when it gets here.

https://www.youtube.com/watch?v=77rNDHFPsiM

The 15 ft video around 17 to 19 min very interesting would not want them to borrow my boat!

https://www.youtube.com/watch?v=qVlilIBjE8k&t=12s
Cool video!
Very nicely done video, but not seeing what you found so cool about the boats.... and I assume you mean ventilation, not cavitation.
Cool video. The scenery reminds me of the Squirrel River and the Omar.

Ed
Posted By: Owl Re: Inflatable Russian Jet Boats - 04/11/18
Отличное видео. Спасибо за публикацию.
What’s the price tag on that setup
Nice boats and I have been wanting an inflatable. I might have to throw some dollas-to-rubles Uncle Vlad's way.
Look like nice toys, but for a serious outing I'd want a couple extra craft to come along.
I like the big church key can opener looking thing that the guy uses to to remove gravel from the impeller grid toward the end.
Originally Posted by Irving_D
What’s the price tag on that setup


I saw them for sale on Amazon for $3,000.
Posted By: g5m Re: Inflatable Russian Jet Boats - 05/02/18
Pretty impressive videos.
Them rivers are older ..them rocks are round.
Originally Posted by Owl
Отличное видео. Спасибо за публикацию.



Пожалуйста
delivered price?
Originally Posted by Sitka deer
Very nicely done video, but not seeing what you found so cool about the boats.... and I assume you mean ventilation, not cavitation.


Cavitation is a term used when your jet pump sucks air. This is a real problem with most of the inflatables on the market today. I think thats what the OP was referring to when he mentioned this hull doesn't do that, and from watching the videos I would have to agree . Pretty impressive performance from a 30 HP outboard jet.
Negative, cavitation is when the propellor or impellor moves liquid so fast it creates bubbles and the bubbles collapse back on themselves. It is a term in science.

Ventilation is when the design of the boat allows water to get under the hull and into the prop or pump. They are not the same thing and yes, many people do not know the difference.

http://www.dictionary.com/browse/cavitation

cavitation
[kav-i-tey-shuh n]
Spell Syllables
Word Origin
noun
1.
the rapid formation and collapse of vapor pockets in a flowing liquid in regions of very low pressure, a frequent cause of structural damage to propellers, pumps, etc.
2.
such a pocket formed in a flowing liquid.
Origin of cavitation
Posted By: cwh2 Re: Inflatable Russian Jet Boats - 05/04/18
Lets see if I did this right.

Originally Posted by Sitka deer
Negative, cavitation is when the propellor or impellor moves liquid so fast it creates bubbles and the bubbles collapse back on themselves. It is a term in science.

Ventilation is when the design of the boat allows water air to get under the hull and into the prop or pump. They are not the same thing and yes, many people do not know the difference.

http://www.dictionary.com/browse/cavitation

cavitation
[kav-i-tey-shuh n]
Spell Syllables
Word Origin
noun
1.
the rapid formation and collapse of vapor pockets in a flowing liquid in regions of very low pressure, a frequent cause of structural damage to propellers, pumps, etc.
2.
such a pocket formed in a flowing liquid.
Origin of cavitation
Originally Posted by cwh2
Lets see if I did this right.

Originally Posted by Sitka deer
Negative, cavitation is when the propellor or impellor moves liquid so fast it creates bubbles and the bubbles collapse back on themselves. It is a term in science.

Ventilation is when the design of the boat allows water air to get under the hull and into the prop or pump. They are not the same thing and yes, many people do not know the difference.

http://www.dictionary.com/browse/cavitation

cavitation
[kav-i-tey-shuh n]
Spell Syllables
Word Origin
noun
1.
the rapid formation and collapse of vapor pockets in a flowing liquid in regions of very low pressure, a frequent cause of structural damage to propellers, pumps, etc.
2.
such a pocket formed in a flowing liquid.
Origin of cavitation



It is worth repeating...
Thanks for the correction...
Originally Posted by Sitka deer
Negative, cavitation is when the propellor or impellor moves liquid so fast it creates bubbles and the bubbles collapse back on themselves. It is a term in science.

Ventilation is when the design of the boat allows water to get under the hull and into the prop or pump. They are not the same thing and yes, many people do not know the difference.

http://www.dictionary.com/browse/cavitation

cavitation
[kav-i-tey-shuh n]
Spell Syllables
Word Origin
noun
1.
the rapid formation and collapse of vapor pockets in a flowing liquid in regions of very low pressure, a frequent cause of structural damage to propellers, pumps, etc.
2.
such a pocket formed in a flowing liquid.
Origin of cavitation


The smartest man I ever met, ( and the wealthiest) quit college in his second year. He always said the most valuable lesson he ever learned was in his freshman year. His english teacher told him not to worry to much about proper english, the most important thing was to speak and write in such a way that you are easily understood by your audience. As a licensed EMT the first thing I think of when I hear "ventilation" is an exchange of air between the lungs and atmosphere.......or I need to get my window down to get some ventilation because the inside of the ambulance doesn't smell to good...

https://www.google.com/search?clien....1.1.64.psy-ab..7.1.566....0.5xd2HflZkBs

I dont think to many outdoorsmen worry to much about scientific terms. I've been running jet boats for 35 years and I've never heard anyone use the term "ventilation". Either way you dont want a hull that causes your pump to suck air, what you call it doesn't really matter, but if you use the term "cavitation" experienced boaters will know what you mean.
Huge difference between the two... true cavitation requires an immediate and large reduction in throttle... metal is being damaged in a cavitation event.

Hard to imagine running jets for 35 years and not hearing the proper term. But there is a big difference between 35 years of experience and one year of experience 35 times.
Originally Posted by Sitka deer
Huge difference between the two... true cavitation requires an immediate and large reduction in throttle... metal is being damaged in a cavitation event.

Hard to imagine running jets for 35 years and not hearing the proper term. But there is a big difference between 35 years of experience and one year of experience 35 times.



You seem the sort that think they know more than the actually do....Im betting you've never run an outboard jet. I've owned and operated a fly in fishing lodge for most of the last 40 years, and I can promise you I have more time on the tiller than you could dream of. The biggest concern with cavitation is the sudden increase in engine RPMs...and the loss of power that comes with it....
Originally Posted by yukon254
Originally Posted by Sitka deer
Huge difference between the two... true cavitation requires an immediate and large reduction in throttle... metal is being damaged in a cavitation event.

Hard to imagine running jets for 35 years and not hearing the proper term. But there is a big difference between 35 years of experience and one year of experience 35 times.



You seem the sort that think they know more than the actually do....Im betting you've never run an outboard jet. I've owned and operated a fly in fishing lodge for most of the last 40 years, and I can promise you I have more time on the tiller than you could dream of. The biggest concern with cavitation is the sudden increase in engine RPMs...and the loss of power that comes with it....

Wrong on about all counts...

There are many here at the fire that have been in my jet boat... and my son's, which he built from scratch... or the many other boats I have owned over the years. Held a USCG Masters License for a couple decades, but disabusing you of your fantasies is not really my job.

If you think the biggest problem with cavitation is the loss of speed and the increase in RPMs you were not listening and did not understand what you should have read. Cavitation leads to serious metal damage on the prop or impellor very quickly. Ventilation is very different from cavitation which seems to be the only thing you have run into with your jet. Except it probably isn't if you actually have run a jet as much as you claim.

Something for you to wrap your head around: if your prop or pump left the water while running in rough weather it did not cavitate, but the RPMs increased and resulted in lost power.
While those boats seem capable, I'm still not a huge fan of inflatable boats after my last incident with one, but it was an older RIB. I'd rather much have a solid boat, unless I could afford to replace it every few years. I did enjoy the videos, but I found one linked that I liked more...

Tag
https://www.facebook.com/574710489535823/videos/609016092771929/


Another video here in AK Solar 470 skinny water
Probably ripped a hole in it~
Still impressed with my boat about 8 plus hrs run time this year. Solar 420 Arrow Yamaha 30 hp 2 stroke jet.
23.8 MPH light load will run in very shallow water. Link to Solar boats with videos.

https://www.facebook.com/Jetech-LLC-574710489535823/
Definitely a cool option. Thanks for sharing the info.

Jason
Posted By: las Re: Inflatable Russian Jet Boats - 09/28/18
I run a 14' Achilles with 30 hp prop Everscrewed, and an 18 foot aluminum flat bottom with rated 30 hp Jet (more if it was prop), 4 stroke Yamaha. Both of them kinda new (less than 10 years and not many hours of operation with the combos, tho the flat bottom boat is a beat-to-hell '73, on it's 5th motor - the 30 prop was the 4th, now transferred to the Rubber Ducky. Some things I have found with my outfits- the hard way - that newbies need to keep in mind:

Jet units will "skitter" the boat on sharp turns. (Hey - I only hit the bank once with the flat-bottom since I bought the Yamaha 5 years ago..... 180 degree bend in nothing at all... I know how to set up for that turn now! And how to throttle for it)

Inflatables will also skitter at high speed with a prop unit - and can throw one out of the boat (almost, once!).

Jet units are less maneuverable at slow speeds than prop units.

Inflatables MUST have enough pressure inside! Overinflation is better than under-inflation, or one WILL get cavitation/ventilation (whatever!).... So far, I have not found a good way or even reference to "proper" air pressure for the Achilles. I just blow that sucker up until it looks/feels right. And if it isn't, I pump some more in! That again, I learned by experiencing too low a hull pressure.

i worry about bear action on the inflatable - not so on hard hulls. Haven't had any. Yet.

Jet units are subject to clogging from floating leaves ( and weeds in the Manley slough.- but so is the prop in the weeds) . On our latest trip to the remote cabin, I had to clear the jet intake a half dozen or more times in the lower 2 miles of slack water( no leaf line- they were over the whole surface) before hitting the Tanana. Farther up the river I was able to stay mostly out of the line of floating leaves, except to cross. Only had to clear twice on the upper 13 miles coming down, 3 times on way up (fewer leaves, just 3 days earlier.

Those guys in the video are having waaaay too much fun! No rifles/moose in sight tho.
Jetech is having a demo tommorow 9-29-18 details below. I will be there with my boat. Kurt

The Jetech demo day is still on for tomorrow. We will be launching at the parking lot on the left at the Little Su bridge just before Millers Landing. There is plenty of parking and the launch is nice. I'm going to try to load up my bbq and should have some food there but feel free to bring anything you want to throw on a grill. I'm planning on starting around noon.

Comment here to let everyone know what setup you're bringing. Hope we get a good turnout with lots of different motor setups for comparison.

https://www.facebook.com/search/top/?q=jetech%20llc
https://www.facebook.com/5747104895...0178/717900118550192/?type=3&theater
Solar 420 OMC 30 HP Jet SE AK great fishing video.
http://forums.outdoorsdirectory.com...-fishing-trip-in-the-inflatable-jet-boat
Posted By: KC Re: Inflatable Russian Jet Boats - 01/14/19

How is this different from a Zodiak with an outboard motor and a jet drive?
Smaller?
No rigid hull?
Tunnel hull, Inflatable floor has I beams in it very rigid that does not flex and introduce air under hull, have tried all sorts of inflatable boats with a jet outboard with dismal results, this is the first to really impress me.

Tunnels water to the jet intake like a hard bottom jet boat, and it bottom has a hi tech poly that just slides over rocks .

Have ran it in under 3" of water on step, with a load. The transom sits on top of floor, on most Zodiak style boats the transom is at the bottom of the boat and you hit at front of transom.
Bought a Solar 420 Vega model for fly in use like the one in the video. Language is Russian.

https://www.youtube.com/watch?v=Db1VuU8w7dg
Posted By: bobmn Re: Inflatable Russian Jet Boats - 02/05/19
KK: Please tell us more about the jet outboard. Thanks
What are your specific questions about the jet outboard?

The reason the Solar jet boat works so well with the jet outboard is the hull design and the jet tunnel, lots have tried and this boat just works.
Posted By: bobmn Re: Inflatable Russian Jet Boats - 02/06/19
Does the jet lower unit just replace the propeller lower unit? Is 20 hp enough power for the Solar boat?
Yes the jet lower unit replaces lower prop unit. You lose about 30% compared to a prop unit.

From the video I think the Suzuki 20 HP 4 stroke which is about 13 HP net would be ok with a light load in 420 Vega model, will let you know when the ice melts.

We ran several motors on the Standard 420 model from 30 HP 2 stroke, 40 hp 2 stroke and 25 HP 4 stroke
25 HP at the Jet and all performed great.

About any place I can put the boat in the water, I can run which opens up a lot of country.

The company that makes most of the outboard jet units in the US.
http://outboardjets.com/

Posted By: bobmn Re: Inflatable Russian Jet Boats - 02/06/19
kk" Thanks very much for the info.
Posted By: bobmn Re: Inflatable Russian Jet Boats - 02/06/19
kk: Would you recommend the stainless impeller?
Depends on what kind of water you are running, bought a new 25 HP Merc jet power late last fall and it had a
factory SS impeller . I have always ran aluminum props on my outboards, my thoughts were wanted them to break if I hit something rather than take out the lower unit. So don,t know yet.

Running shallow water with a jet pump can get expensive!
I checked out these boats at the PNW Sportsman Show. That coating on the bottom seemed pretty tough.
Yes they are, owner sold several today at the Anchorage boat show. Boaters at the Portland show don,t understand the use of these boats.

I bought a second one the 420 Vega, which has smaller tubes and more portable for fly in use.

http://www.anchorageboatshow.com/

https://www.facebook.com/Jetech-LLC-574710489535823/?epa=SEARCH_BOX
I may pick one up in the next year or so. My tohatsu 50/35 jet would be perfect on a 470. Watching the videos and seeing the loads they carry, compared to my jon boat, is pretty impressive.
Posted By: Hudge Re: Inflatable Russian Jet Boats - 02/17/19
I've been thinking about an inflatable style like this for the last couple of seasons. Have you used this for duck hunting and salmon fishing at all? I live near Rabbit Slough and would love to get out to salmon fish and duck hunt. With my oldest in college and the Army Guard now and the youngest not wanting to hunt, I think something like this would be great for near the house.
If I had 50 Jet I would buy the 470 will carry around 1700# . Kind of wishing I had that setup much more useful. I have fished out mine on the Kenai and Little Sue. Last day of the show come and look at them.
Kurt

Here is what Jim has in stock.

Sunday is the last day of the show. We had a couple people change their minds on what model they wanted so we now have a couple extra 470 Super Arrows, 1 green 1 orange. Get a free electric 2 stage air pump with any boat purchase.

These are the models/colors still available:

2ea - 420 Vega Grass Camo

1ea - 450MJT Pixel Camo (top tubes, spray shield)

1ea - 470SA Grn

1ea - 470SA Org

2ea - 470SJ Org (1 has top tubes)

Specs:

Model/length/width/tube diameter/ weight (without polyurethane)

420V/13.75'/60"/16.5"/150lbs/44x22x18

450MJT/14.75'/72"/19.75"/180lbs/52x24x22

470SA/15.5'/74"/19.75"/190lbs/55x24x22

470SJ/15.5'/78"/19.75"/210lbs/57x26x24

Add about 20-30lbs for polyurethane. All of the boats were ordered with polyurethane and transom braces.

If you need some help picking out a boat come to the show. You can also email me at [email protected], or give me a call for more info.

We also have received a shipment of urethane and UHMW intakes, motor bags, and 12V air inflator/deflator pumps.

Jetech LLC

9072321658
Whats the price of one of those 420 Vegas?
At show $3850 1 left
Pretty good Russian video with a 420 and a 20 HP 2 stroke Merc

https://www.youtube.com/watch?v=Dd4UPfSZ2zw
Posted By: g5m Re: Inflatable Russian Jet Boats - 02/23/19
Impressive videos
Posted By: JeffA Re: Inflatable Russian Jet Boats - 02/24/19
Originally Posted by kk alaska


For those that are not aware

Select the "CC" subtitles/closed captions option

If it defaults to Russian or other unfamiliar to you

Select "settings" then "subtitles/CC" then "auto-translate" this toggles a drop down menu where you can select any language you desire.
Posted By: KC Re: Inflatable Russian Jet Boats - 02/28/19

Honda Marine Jet Drive Outboard

Jetech Inflatable Boats
470 boats and bigger most are using a Tohatsu TLDI 50 HP 35 HP jet power, around 196 #. due to weight and ability to transport. Tohatsu has discontinued it. Cant buy Light weight 2 stokes in the US anymore, EPA rules. And latest is they are probably going to regulate the hi pressure 2 stroke fuel inject models.


http://ambermarine.net/tohatsu_outboards/tohatsu_outboard_35hp_TLDI_Jet.html



On my 420 Strella went with the 25 HP Merc 4 stroke Jet Power about 186#, at Bass Pro no one can touch there price here. Heavy, but quiet, and you have to keep power head higher than foot for transport. Uses just under 1 gallon a hr versus 3 plus on a older 30 hp 2 stroke Yamaha I have.

https://www.mercurymarine.com/en/us/engines/outboard/jet/25-40-hp/

On the 420 Vega model we have a Mercury 2005 2 stroke 20 HP Jet Power 123 # for it and will test it when ice goes out. Ice is out here on Kauai now!

Any one knows of any 2 stroke 20 HP Mercury Jet Outboards let me know, has to be running as powerheads can,t be rebuilt.
Jetech will be at the Sportsman Show this weekend I will be there to help stop by. Kurt

https://m.facebook.com/Jetech-LLC-574710489535823/


Another Russian video would not want them borrowing my boat! If any one can do English translation please do.

https://www.youtube.com/watch?v=WXK55wVD0nk
Posted By: bobmn Re: Inflatable Russian Jet Boats - 04/04/19
kk: Is there a jet drive for the new Yamaha 25 HP 4 stroke motor? I used that motor for the season last year. Very lightweight. Is a 25 HP with jet drive enough power for the 420 inflatable? Thanks for the help.
Saw pictures of a Yamaha 25 4 stroke with a Jet last year that was used on a 420, did not get to run it though. The Jet drive unit from Outboard Specialties have been slow in coming heard owner passed on ?

They have been promised from late fall and only build to order,normal delivery is 16 weeks plus but have been slower as of late. Think it would be ideal on power output. Wonder if you would get a jet unit in time for use in 19 ? Which is why I bought the 25 HP Merc 4 Stroke
Jet Power last October it was available, great price but heavy 186 #.


Bought the 420 Vega for fly out use here , have a 20 HP 2 Stroke Merc Jet, to use till we buy a new 20 HP, 4 Stroke Suzuki Jet, if the jet unit comes in, been on order since late fall 18.

Jim the owner of Jetech has a 420 Vega with the New 20 HP Suzuki jet on display at the Jetech booth this WE at the Sportsman show in Anchorage just set up the booth last night.
Posted By: bobmn Re: Inflatable Russian Jet Boats - 04/05/19
KK: The Mercury 25 hp weighs 157#. The Yamaha 25 hp weighs 126#. Would the jet drives weigh the same? Thanks for all the info.
The Merc 25 Jet Power weighs 186# Met someone yesterday who has a prototype Yamaha 25 Jet , here in Alaska, weighs right over 140#. Both are 4 Strokes .

Again the problem is getting a jet unit from Outboard specialties, Tohatsu is coming out with a LW 50 HP 4 Stroke, but av-ability of the jet unit is the issue. Was talking to the Tohatsu factory rep at the outdoor show.
Good video showing how shallow they run and jumping trees.

https://www.facebook.com/Jetech-LLC-574710489535823/

https://www.facebook.com/574710489535823/videos/1123156021201301/
https://youtu.be/E4HbqaHcH4w

Great video showing how shallow they run sold my Solar 420 with Merc 25 Jetpower and bought a Solar 470 with a Tohatsu 50 35 4 stroke Jet.
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