bjofuruh

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@thereference2337 21 күн бұрын

Med tanke på den eksellente utførelsen av velomobil skulle det vel ikke være noe problem å bygge en fryser selv, tør jeg foreslå en Bjofuruh monocoque composite carbon fiber freezer?

@user-rm5cc1nh2w Ай бұрын

Well done Sir !!!

@user-oc7uq8ue7t 2 ай бұрын

How's she work in rain and snow .

@AlbertPhan 2 ай бұрын

Looks amazing. Thanks for showing your beautiful build. This should totally go on Grin Techonolgies Project Gallery

@user-eb4qk9lx3m 2 ай бұрын

Слишком здоровенные крылья.

@nuclearnyanboi 4 ай бұрын

lovely

@tsviper 4 ай бұрын

Nydelig båt! Første du har laga? Løysingane såg utrulig gjenom tenkte ut.

@Skidderoperator 5 ай бұрын

Big fuel savings & way faster.

@MarkCroucherRC4fun 6 ай бұрын

Cool design great to watch, as a point of interest the pusher set up seem to produce more noise.

@bjofuruh 6 ай бұрын

A pusher prop will make more noise than a tractor prop, but it helps to use a low kV motor and large propeller to keep the RPM down, tip speed velocity should be well below 500 km/h. It also helps to keep the plane as aerodynamically clean as possible in front of the propeller.

@JACK4904 7 ай бұрын

Have you compared the efficiency or speed differences between using the same engine in a conventional boat versus a hydrofoil?

@Me30404938398 2 ай бұрын

10kmh normal vs. 23kmh hydrofoil

@stejer211 7 ай бұрын

6650 grams and floating like that? Have you invented an anti-gravity generator? Tell us your secret!

@bjofuruh 7 ай бұрын

The secret is: Total wing area: 132dm2 Wing loading: 50 g/dm2 🎈 Slowest possible speed: 32 km/h (no stall due to canard) Max lift coefficient: 1.02 So, no magic, only physics.

@stejer211 7 ай бұрын

@@bjofuruh That wing area is huge, didn't realize that. Thanks for the info!

@richarddevaottien7724 7 ай бұрын

Front and rear drive propellors?

@bjofuruh 7 ай бұрын

The front propeller is driven by an electric motor. The main rotor is free spinning (wind milling).

@safelandings 3 ай бұрын

First Panther I've seen fly off snow, great job and nicely flown

@richarddevaottien7724 7 ай бұрын

Birds only have their tails at the aft because their eyes need to be at the front😂

@bjofuruh 7 ай бұрын

Birds don`t have propellers either.

@crashfactory 7 ай бұрын

@@bjofuruh if their wings don't propel them, then what does?

@Jerhyn7 8 ай бұрын

Seven words that make algorithms love You.

@mhkatab 8 ай бұрын

congratulations..... simple and it works

@AaronBrand 8 ай бұрын

Does it turn?

@bjofuruh 8 ай бұрын

Yes! It can turn at full speed. Not shown here because the aileron mechanism was not yet fully adjusted, so it was still a bit unstable in roll.

@YurkerYT 4 күн бұрын

@@bjofuruh does it tilt into the turn when turning or remains straight? What's the turning mechanism? Vertical rudder, turning with engine or do the rear ailerons rotate opposite like a plane?

@kevintravis1807 9 ай бұрын

Wow I can fire myself. Tell the boss to shove his job.

@richarddevaottien7724 9 ай бұрын

Spooky microphone sounds😮 What dwells beneath?😅

@MrBrumla 9 ай бұрын

Good day. This is the best DIY hydrofoil boat I've come across on the internet so far. I have had the idea of building such a boat myself for a long time. Could I ask you some details about your boat? For example, what airfoil did you use for the hydrofoils, what angle of the hydrofoils to the fuselage do you have, etc. Thank you for your reply and your time. Sorry for my english but I use google translate.

@bjofuruh 9 ай бұрын

I use the good old versatile Clark Y airfoil for the hydrofoils. It works great at these low Reynolds number. Angle of attack is between zero and one degree positive measured along the underside of the hydrofoil. They must be adjustable so you can find the exact angle for your speed and weight.

@MrBrumla 9 ай бұрын

And can I ask for at least the approximate width and length of the wings? Thank you@@bjofuruh

@bjofuruh 9 ай бұрын

@@MrBrumla The area of the rear foils are: 0.090 m², The front foil is 0.035 m². That gives a total hydrofoil area of: 0.215 m² Rear foils: 0.90 x 0.10 m Front foil: 0.50 x 0.07 m The all up gross weight is: 136 kg.

@MrBrumla 9 ай бұрын

@@bjofuruh If I calculate my weight, the weight of the engine and the fuel, then in these items alone I will reach about 120 kg. My engine is a 6hp Yamaha 6DM 2 stroke, 2 cylinder. If I am very handy, I will manage to make the boat up to approx. 80 kg in weight. So the total weight will be approx. 200-220 kg. I am wondering if the dimensions of the underwater wings as you wrote to me will be enough, or if it would be better to increase the dimensions in percentage terms.

@bjofuruh 9 ай бұрын

@@MrBrumla I previously had a heavier boat with a 5 HP engine and the same hydrofoils. It had an all-up weight of 167 kg. The top speed was 32 km/h. I think you can size up the hydrofoils to get the same wing loading as I had with this heavier boat. It worked great, and with 6 HP it may be fast.

@stan-fo2po 9 ай бұрын

That is awesome!

@allanpreston75 9 ай бұрын

Very cool! I am working on a similar project at University this year and would love to gain some insight from you if possible!

@nosac1230 9 ай бұрын

Love it. Hope you can share more.

@DirectEnergySmirk 10 ай бұрын

Nicely done

@michaelstanfield7530 10 ай бұрын

Is there a damping/preload mechanism or some kind on the ailerons? What kind of waves can it take before a feedback loop persists? Super neat I applaude your wonderful efforts 👍

@jbreefer148 11 ай бұрын

Ingenious ❤ it.

@Tecnobingo Жыл бұрын

Hat off. You did a lot of work

@sUASNews Жыл бұрын

Fred Marks CoPilot, nicely done!

@MrMacGaunaa Жыл бұрын

Amazingly neat project! Such a nice, clean design and build. I'm looking forward to a (hopefully coming) follow up video! (Among other things) I'm curious about the performance of the thing with the engine mounted at the right height! Also, what is the (approx) take-off speed? Edit: I work with fluid mechanics at Technical University of Denmark, and hydrofoil boats are one of my side-projects. I have developed a simulation tool that should be able to handle hydrofoil setup performance (including first order spray and surface effects), and one of the setups we have simulated is a lot like what you have built: depth control on front, rear left and rear right side. It would be really fun to try to simulate your setup. One of my longer-term goals with my hydrofoil student projects would be to build and test hydrofoil setups using some sort of test-vehicle. Yours looks very nice indeed. If you have time and find it interesting I'd like to get in touch with you over email and/or skype. My email is [email protected]

@MrPilotStunts Жыл бұрын

This is the best thing I've seen today.

@Bazakilouis Жыл бұрын

Wow very impressive. A flipsky motor and a flying rodeo prop with a VESC would make a very nice combination to make it electric

@Vintabilly Жыл бұрын

Lovely front strut setup. The leading skimmer works well. I'm very impressed with your pushrod controls slotted through the anti-ventilation fences. Well done.

@sangtsang7936 Жыл бұрын

👍👍👍！😲

@michalczarnecki3521 Жыл бұрын

How did you calculate the size of the foils as well as the balance?

@bjofuruh Жыл бұрын

I made a spreadsheet with all variable parameters for the boat, so I could calculate weight, weight distribution, lift, drag, engine power and so on. If you are interested in designing your own, you should purchase Ray Vellingas book on hydrofoil design.

@Vintabilly Жыл бұрын

@@bjofuruh Ray's book is the key!

@tgwhelan Жыл бұрын

Very cool! That looks like the Pacific Northwest. Impressive speed for a 3.5 hp!

@SciFiFactory Жыл бұрын

Super cool! How does it behave when going through small waves?

@bjofuruh Жыл бұрын

I will comment on that when I have gone through some waves.

@DGroenenberg 2 ай бұрын

@@bjofuruh have you gone through some waves?

@antonnpn9063 Жыл бұрын

Very impressive build! Is there any way I can contact you?

@shanepinner2637 Жыл бұрын

Great video and Velomobile, any plans available?

@cmbbfan78 Жыл бұрын

How much was the cost + work hours?

@janrc Жыл бұрын

Is this you own construction or did you bought is somewhere - and when true, where?

@bjofuruh Жыл бұрын

Go to: www.icare-rc.com/rainbow.htm

@graham6411 Жыл бұрын

It really slices through the water nicely. I have been waiting on my plans but they were sent USPS which means that they were delivered to the Peruvian mail system. When that happens it usually means 6 months to never before I receive mail.

@graham6411 Жыл бұрын

I do not understand how you turned. Did the whole aft end turn? Is that a shock absorber that I see for raising and lowering?

@bjofuruh Жыл бұрын

The motor shaft rotates in the aft end of the kayak and is steered by cables that goes to the joystick. The aft end is raised and lowered by an electric actuator.

@TANOCA17 Жыл бұрын

Ankle bender 😜

@douglasgallardojr4759 Жыл бұрын

Thank you for sharing and for including so much footage of you driving it. That's very helpful and most videos don't include it.

@gutenbergxavierdasilvabarr6794 Жыл бұрын

Wonderful! Amazing creation! What are its maximum measures? Did you do two different models (the yellow and the blue) or are they the same with modifications?

@vbc3 Жыл бұрын

har vært der før

@LarsenMoto Жыл бұрын

Trym???

@vbc3 Жыл бұрын

@@LarsenMoto det er meg jq

@hannesaltenfelder4302 Жыл бұрын

Wow, what a great design! What's the total weight and cost and are there any unsolved issues left? Is a front trunk superior to a rear trunk (weight distribution etc.?)

@VermontStrolls 2 жыл бұрын

Nice job!

@AK_Erwin 2 жыл бұрын

Upload whole process, i.e how you made this amazing flying machine.

@bjofuruh 2 жыл бұрын

Go to: www.icare-rc.com/rainbow.htm

@rossaiello3409 2 жыл бұрын

I think there would definitely be a market for this product....It looks like velomobiles in the EU are > $12,000....Need to take the cost out and make it an E- bike. Cyclists here want to be able to cycle in inclement weather and are willing to pay. It would be good to have a little heater in the bike. Perhaps place a flywheel to have regenerative braking.

@koenpauwels98 2 жыл бұрын

how did you do the mechanics :-) did you use a original trike and build this stuff around it?

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