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Henseleit 3DNT - Rocket - 3DMP > Henseleit Three Dee NT

DangerousDick
Veteran
Location: Cheshire, England

I've got a new heli

Father Christmas is being VERY generous this year!

I've taken a few 'peeks' at it and can't wait to get into that box.

Anyone else on this board got one?

Cheers
Richard.

12-21-2001 Over year old.

Peter Wales
Key Veteran
Location: Orlando Fl

I have the Rocket. It has been test hovered and is due for a thorough checkout tomorrow, weather permitting.

Nice machine, very different. I am looking forward to trying it out in earnest.

12-29-2001 Over year old.

HOMEPAGE

jfair
Senior Heliman
Location: Ft Lauderdale FL

Peter, you old dog you

Thats the second rocket that I know off in Florida... I guess we are on the space coast. You've got to let us know how it goes. Theres a Rocket down here in Lauderdale, but it hasn't been flown yet, just sitting on a shelf. I'm dying to know how they are. Might have to order me one

Where did you order yours from?
We want pictures to!!

Jeff

12-29-2001 Over year old.

Rocketman
Heliman
Location: Austria

Hi Dick!

Congratulations to you, best choice. If you want to see pictures of Rocket or NT, look at my page.

Harald

12-29-2001 Over year old.

HOMEPAGE

pirouemaniac
Heliman
Location: NV

Welcome to RunRyder

12-29-2001 Over year old.

Peter Wales
Key Veteran
Location: Orlando Fl

I have been lurking here for some time, trying to learn all about these here helis

I bought the Rocket for an odd reason. When It was suggested in another forum that I should get one, I thought thats about the stupidest suggestion I have ever heard. I like big slow revving scale helis and to get something with a head speed of 2000+rpm was crazy.

However, I wanted to put a different powerplant in my Top Gun Lama and when I read about the Rockets low revving engine and very quiet flights, it seemed like a perfect solution to me. It just needed to be geared differently to give me a head speed of about 1300 rpm.

I bought all of the parts from Dave Whitney at Revolution Models in England, and when I got them, I realised this was something different. I needed to learn more about how it worked so I bought a kit as well. I am glad I did, it has some very radical thinking in it and it is a superbly engineered kit. The manual explained everything in great detail which was a big help.

I ran both motors in on the bench and built up the kit. It has hovered, very nicely BTW, and I am just waiting for the right day to try it out. It needs clear blue sky and fairly calm conditions because I think this thing is going to be very very different from anything else I have flown and I dont want to break it on its maiden voyage.

Experienced fast pilots have complained of a very rapid loss of orientation and after hovering this thing at 1/3 throttle and gingerly moving the stick to see how it responds, I can see me not only losing orientation but losing sight of it. It has soooooo much power.

It doesn't look like today will be the day tho' cloudy and windy at 9.00am and it will only get worse. BUT, tomorrow is another day. I will report back when I have flown it.

Peter Wales

12-29-2001 Over year old.

HOMEPAGE

DangerousDick
Veteran
Location: Cheshire, England

TheeDeeNT

First flight yesterday - what a helicopter!!

Had great pleasure in building it - the bits go together exactly as it describes in the manual and the quality is outstanding.

Spent the first three flights just hovering around with an extremely rich mixture and then hit the runway to see what she could do.
Orientation is B A D to such a degree that I lost it twice in the space of a couple of minutes (I've added more stickers / lines to the fuz now) but what power

combined with the lightness of the model, it goes like stink and just eats up the sky.

Today was better with more contrasting colours to look at on the canopy but I think I need more colour on the blades (NHP Razors) to see better in the turns. Roll rate is phenomenal and that tail is so powerful but so precise - 540s are easy.

Last flight and I started to lean the engine out a bit but the light was going so just confined flight to the runway hovering about. Maybe next time I'll get confident enough to try some 3D - that's as soon as I can forget how much the setup cost me

Definately a NICE kit for the money, will be interesting to find out what the availability / cost of the spares is going to be (should've thought of that before purchasing the kit

) and how long the mechanics run for without major maintenance work.

Cheers
Richard.

12-30-2001 Over year old.

Peter G
Senior Heliman
Location: Runcorn, Cheshire, UK

Tachometer

I am trying to get a Tachometer for reading head speed.The cost of Heli Tacho.s is rediculous, I have seen people using bycycle speedometers that have been adapted. Does anyone know of how to
convert these to read accurately onto a heli.
Please Help
P.S Anyone flying heli,s in Cheshire?

01-04-2002 Over year old.

HOMEPAGE

DangerousDick
Veteran
Location: Cheshire, England

Bicycle Tacho's

Hi Peter,

Doesn't look like there are many of us in Cheshire on this list but I'm sure there are plenty of us around - I fly the heli at the Cheshire Hel-E-Cats in Mottram St Andrew.
The Tacho adapted from a Bicycle was mentioned in the Model Heli World recently when they covered the Henseleit Rocket - I'm pretty sure all you need is one that reads up to 200mph/kph and can display RPM instead of speed. The mechanics work the same way - a sensor reading a signal on the drive train from the head (main gear or shaft) giving the head speed. Also advantage to get one that stores the highest rpm sensed so you can land and read rather than trying to look at the readout whilst flying (or you can get a mate to do the hard bit for you - I'll leave the decision of which is the hard bit to you

).
I haven't really bothered with tacho's yet but wouldn't mind one of those that you look through to get the reading so you can acurately set the rpm at top end in flight.

Keep us posted on how you get on.... Might be as well to post a question on the main forum to get more response???

Cheers
Richard.

01-04-2002 Over year old.

Stephen
Senior Heliman
Location: Hong Kong

Hi Folks,

I have one of each. The Rocket assembly is completed, just waiting for me to put the 140 F1 on and the NT is still in the box. The NT will be using the new Webra 120AAR.

Will keep you posted after I have a chance to test fly them

Stephen
CHRC

01-05-2002 Over year old.

DangerousDick
Veteran
Location: Cheshire, England

Piccies

Had another outing in the fog on Sunday, so here are some pictures

I'm getting a bit more brave, but have a looooonng way to go yet with this model!

Cheers
Richard.

01-07-2002 Over year old.

Peter Wales
Key Veteran
Location: Orlando Fl

Stephen,

Are you going to use the 140FI or is that a misprint. The correct motor is the Rx with the webra carb.

I would like to know how the NT differs from the Rocket. Again, is the webra 120 motor the correct one for that?

Peter Wales

01-07-2002 Over year old.

HOMEPAGE

Stephen
Senior Heliman
Location: Hong Kong

Dear Peter,

1. 140F1 is not a mis-print. I am going to install that instead of the 140RX. Wanted to try the F1 but since I do not fly planes, the Rocket seems to be the natural test bed.

2. Webra 120 is also not the proper engine for the Three Dee. It was designed for the OS 91. I will have to CNC quite a bit of parts to make it work.

3. Three Dee uses the same rotorhead and that's where the similarity ends. The Three Dee is a more "normal" helicopter with fan etc. I cannot tell you more since I have not started working on it.

Stephen
CHRC

01-07-2002 Over year old.

Rocketman
Heliman
Location: Austria

Hello Stephen!

I have both, the Rocket and the three Dee NT. I´m sure the Webra 120 ist not the best choice for the NT.

Take the OS 91 or 61, you will have more than enough power.

Harald

01-07-2002 Over year old.

HOMEPAGE

Peter Wales
Key Veteran
Location: Orlando Fl

And the FI wont work in a heli!!!

The reason is that it is designed to have a constant load at varying speeds. ie at any given rpm the load is fixed as the pitch of the prop is fixed, so you can adjsut the mixture for that rpm and it will always be correct.

The heli will have varying loads at constant speeds and you cant vary the fuel mixture. ie, you can have 1750 rpm on 1/2 throttle and full throttle depending on the pitch, and the computer will supply the same amount of fuel in either case.

I tried it....and so did Jan Henseleit.

Peter Wales

01-07-2002 Over year old.

HOMEPAGE

Stephen
Senior Heliman
Location: Hong Kong

Thanks for the advise guys, I did not realize the problem with the 140F1, however, I still intend to try it. I do have the facilities to reprogram anything and anyway I want. This is a pet project so I am going to take my time and have some fun.

Thanks again
Stephen
CHRC

01-07-2002 Over year old.

Peter Wales
Key Veteran
Location: Orlando Fl

Reprogramming other peoples computers is what I do for a living

You need to incorporate the throttle angle in the computer and create a 3 dimensional fuelling map based on rpm and throttle angle. It may be possible to remove the exhaust temp sensor and use that as an input, but it was too much work for me, I wanted something I could bolt straight into another problem without having to work that one out.

If I were serious about that system, I would scrap that computer completely and start again with a PIC or something else similar.

Have fun

Peter Wales

01-08-2002 Over year old.

HOMEPAGE

jfair
Senior Heliman
Location: Ft Lauderdale FL

So Peter, we're dying to know... Did you open up the Rocket yet?? Is it as fast as they advertise?? The old credit cards are just screaming to be used

01-08-2002 Over year old.

Augusto
rrAdvertiser
Location: San Diego, CA

Yeah Peter I also want to know how your Rocket flight went.

Avant Aurora Ultimate

01-08-2002 Over year old.

Peter Wales
Key Veteran
Location: Orlando Fl

The weather here has just not been right. Either its bright sunny and windy and cold or wet windy and cold or just wet and windy. Thursday looks like a likely day.

Meanwhile I have taken Richards words to heart and added dayglo tape to the blades in 6" wide strips and painted the window on the canopy in a dark color, hopefully to aid orientation.

I will report in as soon as I get this beast in the air, but conditions will have to be right as I think it may turn out to be a bit of a handful for me

Peter Wales

01-08-2002 Over year old.

HOMEPAGE

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