RunRyder RC Helicopter Topic - 3DNT confusion

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Henseleit 3DNT - Rocket - 3DMP > 3DNT confusion

BigChopper
Key Veteran
Location: Cambridge, UK

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Spinout, not sure I haven't done it myself... but it must be 'do-able' because there are Dutch guys who run C-Specs in their NT's.

Let us know how you get on with the 3 needle carb on the webra

Andy

09-28-2004 Over year old.

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SPINOUT
Senior Heliman
Location: Cape Town South Africa

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BIG CHOPPER

Will let you know the out come of the 3needle carb and yes there some guys running the c-spec in left hand rotation ,not sure that i want to change the head rotation as my other heli is right hand.Iam also looking at a new ship probably the new X-SPEC / avant looks great.

Thanks anyway will keep my fingers crossed ,the NT is wicked.

SPINOUT

09-28-2004 Over year old.

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555 flyer
Heliman
Location: Netherlands

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You need a 8mm shaft so a YS won't fit. I don't known if there will be a OS PS with a 8mm shaft, you can always adapt 1 with a upgrade set. But the next thing will be clearance problems between the exhaust header and Pump in the backplate, I think.
A standard C-spec with the 8.3 gear works great, but not available with right hand rotation.

The NT was developped around the FX engine, as this was the first 15cc heli engine available. Even before the 90 SX, the FX is build upon the Fixed wing version of this engine. And keep in mind that Jan and many other german fliers have a complete other 3D flying style then the short and agresive power-hungry USA-style. Everything is flown very smooth and big, best compared to the style of CY a few years back.

Contacting Jan at this moment will be difficult, last thing I heard is that he locked himself up in his workroom to get the Threedee MP ready to ship. And a good thing that is!!!

Rick

09-28-2004 Over year old.

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G.Man
rrProfessor
Location: Bristol

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I heard a rumour about a West 91 with a reverse rotation crank...

That should run happily on 7.75 ratio using the West Pipe...

I will let you know as I am trying the stock rotation west in a raptor 90 on 7.75 with their pipe soon...

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09-28-2004 Over year old.

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BigChopper
Key Veteran
Location: Cambridge, UK

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Ooooooo..

bet thass expensive... see I'm right, you have got too much money!

I have got a west 90 pipe.. the NT pipe mount spring thingy needs a little modification to get a fit because the west pipe is fatter than the hatori and hits the skid legs

Andy

09-28-2004 Over year old.

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ATHAM
Veteran
Location: santa clara

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GUYS,
i just got 3dnt with webra (2 needle). 8.3 ratio
are you guys sure there will be a problem with this combination plus governor?

if its yes then im not gonna build this kit

thanks

09-28-2004 Over year old.

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BigChopper
Key Veteran
Location: Cambridge, UK

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Atham,

Dont let us put you off. Some of us had no luck with the Webra.. others luv 'em..

It's either you get some good ones and some bad ones, or some of us are just crap at tuning webras

- probably the latter

See Stephens posts on how to tune these baby's in this thread
http://www.runryder.com/helicopter/t123483p1/

Andy

09-28-2004 Over year old.

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nocontrol
Veteran
Location: Cape Town, South Africa

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"I heard a rumour about a West 91 with a reverse rotation crank..."

Tell us more as soon as you know - It will make a lot of people very happy if this can solve the "problem"

ATHAM - sorry to be so negative but I do not have a lot of hope for you - if you fly smooth then maybe - sorry

09-29-2004 Over year old.

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G.Man
rrProfessor
Location: Bristol

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The biggest problem I found with the webra was that the carb needles are so sensitive to pressure change the engine can lean as the tank empties...

Uniflow can help with Webra Carbs, and all my webras have always run uniflowed...

I also used a header tank mounted behind the mainshaft (bit of extra piping, but worked) to stop the richening in piro's..

My guess would be that the Webra pump might be a better solution to all the issues, is it out yet?

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09-29-2004 Over year old.

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DangerousDick
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Location: Cheshire, England

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Guys, guys - aren't we missing something here??

The 3DNT is a complete one only item designed for a purpose and around everything that fits into it to make up one of the best models you can lay your hands on.

It WONT fly like a Fury or Raptor 90 so if you want something to fly like that then can I suggest you go out and buy one of them instead

that way you can chuck as much nitro at your model as you want to get the performance you want.

If you (like me) appreciate the engineering and power combination which give the unique flying characteristics of this fantastic model (not to mention the cheap fuel

) then buy a 3DNT. I've had one since they first appeared in the country and have never looked back - it has brought my flying on in leaps and bounds and I love the smoothness and size of manouvres it can perform. I have also seen plenty of action with other 90's but can't see me ever giving up my NT for them

Jan hasn't just sat there admiring his creation in the 3DNT, he's gone further and created another superb model in the 3DMP utilising electric power and LiPo's - taking full advantage of the technology of the moment. I can't see him going back to the NT to make any 'so called' improvements so the nitro bashers can put the latest hunk of metal in and make it 'fashionably' aggresive - he hasn't 'sold out' to larger manufacturers to see them 'cheapen' his designs on a larger scale so how can you expect him to make modifications so you can replicate that flying style with the original?

Please appreciate the 3DNT for what it is/was and fly it to its limits

Right then, 'flame suit' on - hit me

09-29-2004 Over year old.

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SPINOUT
Senior Heliman
Location: Cape Town South Africa

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Dangerousdick

I agree the NT is a remarkable machine and is one of a kind but when i bought this heli it was sold to me with a webra ,so called one of the most powerful motors on the market ,this was very attractive at the time and now iam stuck with a webra that does not work for me and many others.A friend tried the FX which is definatly a perfect choice for the NT as it runs very smooth but does however lack the power of the newer versions .Now iam at a cross road with what to do still trying the webra with new 3 needle carb might be the only hope for some of us that demand a bit more grunt.My other heli is capable of smooth easy ,big moves and really tight stick banging when needed.Why this great heli(NT) has to have those limitations i dont know.Evolution is sometimes nessasary then the people can decide where they want to fit into the picture .

Dont flame me its my opinion that such a well designed machine should have more motor options.

Thanks SPINOUT

09-29-2004 Over year old.

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BigChopper
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Location: Cambridge, UK

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Well said DD..

09-29-2004 Over year old.

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G.Man
rrProfessor
Location: Bristol

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spinout

http://www.fraserker.com/heli/unifl...iflow_works.htm

will sort your webra

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09-29-2004 Over year old.

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nocontrol
Veteran
Location: Cape Town, South Africa

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DangerousDick - Do not take me wrong with what I am going to say now, I am NOT attacking you.

"It WONT fly like a Fury or Raptor 90" You are mistaking big time. The NT flies like you explained AND like the Fury and Raptor - no better than those 2 for "stick banging" You miss the point - the HELI CAN do both "types" of flying better than any other heli, so the heli is "100%" it is the motor. If Jan can design a clutch that will fit on any motor (I understand the Tornado works this way) I think we all will change the direction of the blades.

3DMP - different argument at all

You know, there is nothing in life that is not improvable, so why not the NT as well. I hear your argument but damn with some small "altiration" (impovement) / change (call it what you like) the heli can be even more. We are not looking at changing the heli at all, we would just like to be able to use the latest technology.

The motor situation on the NT is so bad that you make a remark like "It WONT fly like a Fury or Raptor 90". Believe me, it does with the Webra but we can not get the motor to run consistant.

I say again the heli is "100%" we are not knocking the way the NT flies!!!!

Galifrey

The uniflo - I can understand helping in a piro. but we punch the heli straight up and then lett it drop straight down and it goes rich, worse in piro. If we go +10 degrees and then -10 degrees it is fine also fine it tick-tock. It goes bad when loaded up and then unloaded, does not matter what angel the heli is at or what it is doing. You still think it will help?

I spoke to people that uses Webra with "std" muflers (I think Zimmerman) and they are happy. This week end I hope to put a MP2 on my Webra and see if it is the Hatori 700

Damn guys - you must feel / see the NT go on the Webra (stronger motor). It is anbelievable (compared to Tempest/YS and CS/C-Spec combo's) If we could just get it to run the whole flight and then flight after flight.

09-30-2004 Over year old.

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nocontrol
Veteran
Location: Cape Town, South Africa

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piston

Now that is food for thought. Have to think a bit. Stephen from Cyber said he tried it and it did not work. How did you fly it, hovered, Figure 8’s, smooth loops & rolls, tighter moves or hard “stick banging” 3D.

With my CS and Tempest I notice that if I flip it back and fly of backwards inverted I have to correct on the aileron. On the NT, (almost) nothing. The NT seems to “track” better in different attitudes. Did the NT head on the Tempest help for this or is the lower NT the reason for this?

DangerousDick - This is one of the reasons why I say the NT is “better” than the other 2 for 3D.

10-01-2004 Over year old.

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Darren Bradley
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Location: UK

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Piston

Have you any pics or video we can see of the hybrid ??

10-01-2004 Over year old.

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Glenn Cain
Senior Heliman
Location: Singapore

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Sure hope Jan can do something.
Like nocontrol said, I believe the ultimate goal of anything is to achieve all, not just a facet of flying. As much as a company can boost about a heli ability in one facet of flying, say extreme 3D or precision only, I am sure eveyone wanna own something that can do everything well. 3DNT has proven itself to be precise, efficient, and a gem to look at. Allowance of a better engine on the heli does not make the heli suffer in any facet, not that I know of. If extreme power is at the doorstep, why should we not hope that Jan will open that door?

10-02-2004 Over year old.

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nocontrol
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Location: Cape Town, South Africa

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piston - I see my credit card being used a lot in the near future.

Glenn Cain - Well said

What do you think - Avant (look under hirobo) with NT head

10-04-2004 Over year old.

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3DPP
Senior Heliman
Location: Vienna/Austria

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This is a way I tried to make the Webra constant.
I regulate a regulator like YS do it,but here with backpresure from the pipe.
With the NT you have to look that the tank don´t get in contact with the big gear.
This regulator is from OMI it´s a cline,on the backside I close the hole, where air can go in and out if the regulator moves,with epoxy and brought on a M4 fitting for pressure from the pipe.
Today was his first flights and it work near from beginning well,I had only to change the high from the regulator because he was running to rich on inverted.