A flying amphibia "boat" ?

[brian.pedersen]

The video looks awesome, has anyone seen these before: http://holte-modelhobby.dk/Video/hydrovideo.wmv ?

Acording to the shop where I found it, Its called "Lobster Hydro-Foam Spaceship RTF".

http://www.holte-modelhobby.dk/Billeder/2005830155123458.jpg

[speedchaser]

Fantastic! What? How?? Where are the flaps? This is the first time I've done anything on rcgroups in months - got cold feet, disillusioned, etc (the usual stuff) with a project I thought I'd finish over a year ago. This has given me added inspiration... What elec motor is that, what's the gearing if any - and the dimensions & weight? Again. fantastic! I have no doubt that something like this will be the 'flying vehicle' of the near future.
...........
Looked at the video again - realise the flaps are in the downforce wing. The cross sections between sponsoons and centre tub must be almost exact aerofoils...

Regards

[ray schrauwen]

It will take a very experienced airplane pilot to fly that unit, the video is enticing but it uses alot more than rudder and elevator.

[Jim Duda]

Surface or Air approved frequency...(wink)

[martin richards]

Looks like a non-geared outrunner. Imagine running it in an electric hydro race. Overtaking would have a new meaning;)

[raz]

This was posted here months ago but at that time they were not in production yet and were supposed to be in kit form when released. How much is the RTF version? I still want one. Even if flying it is hard at least it won't get hung up in the sea weed..lol

[belgianguy]

hey every one, i'm a newbe to this forum from belgium, this "Lobster Hydro-Foam Spaceship RTF" is just the thing i was looking for, maybe some of you guys have a little more experience on this type of air-boat ?

to me, 1675.21 EUR seem a lot of money... don't know what you think of this?

[brian.pedersen]

The RTF kit is 2.500 DKK, which is about $400.

Here's what the shop says about the kit contents:
- Main body
- 11,1 volt 1800mah 12c lipo battery with charger
- 30 amp brushless speedcontroller
- 2408 brushless motor
- "v"tail mixer
- gws propeller
- e-fly 4 channel transmitter + e-fly receiver, 3 servos
- Carbon bracket 4mm, servos carbon bar 1,2mm, pyrocendensations membrane, motor mount and decals

http://www.holte-modelhobby.dk/shop/product_info.php?products_id=4861&osCsid=46fdc7f15b99490320711acce9250a11

/Brian

[CG Bob]

There have been several discussions on this board about these models.

Flying airboat (http://www.rcgroups.com/forums/showthread.php?t=425385)
New: Graupner HYDROPLANE 3D (http://www.rcgroups.com/forums/showthread.php?t=412110&highlight=hydro+foam+)
"Miss Hangar One" (http://www.rcgroups.com/forums/showthread.php?t=392006&highlight=hydro+foam+)
Hydro Foam Video Link (http://www.rcgroups.com/forums/showthread.php?t=427538&highlight=hydro+foam+)

Searched the board for "hydrofoam" and got the following results (http://www.rcgroups.com/forums/search.php?searchid=4171232).

[speedchaser]

I looked at the video again, and I still don't quite believe it; although I accept it.
It will take a very experienced airplane pilot to fly that unit, the video is enticing but it uses alot more than rudder and elevator.
I'm intrigued - what is the 'alot more'? b.p - Does the prop have variable pitch perhapps, like on a chopper:censored:
'Overtaking would have a new meaning.' I agree, you could just jump it over the boat infront. What's really good about the design though, is that the props diameter is a lot less than one would think it would need to be - alot less than what you have on some airboats at least. That foam must only weigh a few ounces...

[CG Bob]

I'm intrigued - what is the 'alot more'? From the Hangar One instructions (http://www.rchomepage.com/~dna/hangar_one.pdf) here is a list of the recommended equipment:
E-flite 370 Outrunner motor
Castle Creations Phoenix 10 ESC
900 mAh 3 cell lipo battery
GWS 6 channel rx
3 Hitec HS-55 servos
9x6 prop


You're going to need at least a 4 channel programmable aircraft style radio; because the elevators also function as ailerons (properly called elevons). Again from their instructions: "Set your radio to delta wing mode and verify all controls are moving in the right direction.
Right aileron = right side elevators up, left down.
Left aileron = left elevators up, right down.
Down elevator = all 4 elevators down.
Up elevator = all 4 elevators up.
Right rudder = both rudders right."
Mixing rudder and aileron controls will make for nice graceful turns; provided the radio is capable of computer mixing these functions.

Depending on where you operate this type of model in the US, you may want to be on 27 MHz or on 50 MHz if you have a Ham radio license. 27 & 50 MHz have are for surface and aircraft models.

[speedchaser]

Right - looked at 'instructions'; a hi-tech piece of kit. Would love to know what the flat-out strait line mph is just on water with the 2408 brushless motor - and which equivallent brushed motors would do similar performances...

[brian.pedersen]

Just found a review here on the E Zone: http://www.rcgroups.com/links/index.php?id=4882

/Brian

[kryptoniteRxn]

I Want One!!! I Want One!!!i Want One!!!i Want One!!!i Want One!!!
I Want One!!! I Want One!!!i Want One!!!i Want One!!!i Want One!!!
I Want One!!! I Want One!!!i Want One!!!i Want One!!!i Want One!!!
I Want One!!! I Want One!!!i Want One!!!i Want One!!!i Want One!!!
I Want One!!! I Want One!!!i Want One!!!i Want One!!!i Want One!!!

[Nyala]

Hi Folks

You need 4 channels with elevon mixing to fly this beast.

Forget the expensive chinese version. Buy from Red. He sells the MH1 ( Miss Hangar One) Hydro foam kit which is now the lightest one available with his recomended setup. These craft do not fly well when they are too heavy. Also a small prop, 7 x 3.5 is the best for this craft.

I built several of these Hydro foam craft the last few months from plans available here in rcgroups. The plans were created by Proper. Since I got the weight right at 250g I use an AXI 2204/54 with 700 mAh 3 cell Lipo and it flies great.

I hope you all get the chance to try one :D

[speedchaser]

Hi... The kit says a 9x6 prop but another suggestion recommends a 7x3.5 - which is best? Also, where the 9x6 is concerned - well, I understand that's a diameter of 9"; but surely the length of the boss (if that's the right description) isn't 6"? Or is it? I still couldn't find any water-speed figures though, although they seemed to be going at some rate in the video - that is even before they took-off :D

[CG Bob]

On airplane props, like the 9x6, the first number is the prop diameter in inches; the second number is the theoretical distance the prop will move the model in one revolution - 6 inches for a 9x6. A 7x3.5 moves the model 3.5 inches per revolution.

[speedchaser]

Many thanks; didn't know this for the second figure. Any suggestions on the water speed figures anyway? Anyone...

[bekaflight]

This is my HydroFoam:

[fancyaaron]

Oh!cool!I have seen it somewhere!