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HelicopterRobbe Cuatro - Millennium - Nova - Dyna-X › No long boom for Millennium3!
03-15-2003 08:49 PM  14 years agoPost 1
wilsonj

rrApprentice

Waikerie, South Australia

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Hi All,

I have just been informed that the new Millennium3 will have the same length boom as the Millennium1 and 2.

I feel rather let down by this, as I saw the new machine as an opportunity for Robbe to fix this problem. But suprisingly they didn't.

This is strange considering they had the larger engines in mind when redesigning the Millennium.

Am I the only one that would like a longer boom? I need to know. 8-(

The standard boom restricts blade sizes to 710 mains, 95 tails. I don't feel that 95mm tails give enough authority. And the trend seems to be to make things bigger. The Millenniums/Novas/SEs will never be able to use 720s.

I know I can extend the boom 10mm. And I accept this on the Mill2, as the larger engines were not around when it was designed. But I don't fell I should have to do this mod with the latest edition.

Any opinions?


Regards
Jamie Wilson

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03-15-2003 09:26 PM  14 years agoPost 2
hobbet_1981

rrApprentice

Greece

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Wilson i believe there is no reason for robbe to extend the boom if you want to take a heli with larger boom you can buy the cuatro who accepts longest tail and main blades .Personall i fly my millenium with 710cm razor and robbe 105 tail blades without any problem and with very good tail authority

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03-15-2003 10:54 PM  14 years agoPost 3
Britflyer

rrVeteran

Derby, England

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Speed Up Tail Gears ????

I haven't looked at the specs for the Milli 3 in much detail.

Robbe might have changed the tail rotor gear ratio to make the tail spin faster. This means 95mm tails may work just fine and hence no need for a longer boom.

But I tend to agree with you Jamie, make the boom a little bit longer and people could use any main/tail blade combination they wished. Also being able to fit a set of 720 or 730s may helped to soak up all the power we now have available to us.

Just a thought

Paul

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03-16-2003 12:06 AM  14 years agoPost 4
MJA

rrKey Veteran

UK

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I agree with Jamie,making the boom and tube drive a bit longer would have been a good idea worth doing.

Hobbet,you must have been lucky so far as if you check carefully i think you'll find it doesn't have safe clearence with 105 tails and 710's.

tail speed up gears is not the best escape route ,according to CY ,4.6:1 is the optimum,driven tail heli's with a ratio higher than 4.6:1 rob more energy during autorotations.

The Milli needs 105mm tails for best performance with
68cm blades,so it definately needs them with longer main blades


Martin

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03-16-2003 12:10 AM  14 years agoPost 5
wilsonj

rrApprentice

Waikerie, South Australia

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HI Hobbet_1981

Glad to hear you are not having any problems with your setup. But I think you will find that the main blades will come in contact with the tails if you start "throwing" the heli around.

Hi Paul,

Good point about speed up tail gears. I had just started looking into that. Any idea what the part numbers are? I don't have a catalogue.

I can't find the tail gear ratios for the mill3. Anyone know it?

Thanks

Regards
Jamie

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03-16-2003 12:14 AM  14 years agoPost 6
wilsonj

rrApprentice

Waikerie, South Australia

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Hi Martin,

Ahh, you are right. I forgot about autos!! High speed tail would probably rob too much power.

The easiest solution would have been for Robbe to make the boom 20mm longer.

Back to a longer boom. 8-)

Regards
Jamie

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03-16-2003 12:25 AM  14 years agoPost 7
MJA

rrKey Veteran

UK

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Jamie,
I don't know what ratio the tail speed up gears available give,but it may be offset a bit by the longer blade lengths.But i still think extending the boom and drive in the new kit would have been a good thing,probably **** scared of making it too tail heavy and having people piss and moan about it


Martin

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03-16-2003 03:23 AM  14 years agoPost 8
RyanW

rrKey Veteran

Edmond, Oklahoma

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Hello,
I have been using Modelsport 710 main blades and 107 tail blades for quite some time without a problem. The only time I had interference is when I used to run the NHP 710s with the tracking tips on them, then they would hit the tail blades. Are you guys 'timing' the main to tail blades? You may want to try that. I have a set of speed up gears in my new heli, I will let you know they perform in comparison to the stock arrangement. The speed up gears are available in two different sets. The ones I have give approximately 1:1.05 ratio. The only other thing I can say about the blades hitting each other is smooth out the piro flips j/k
-Ryan

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03-16-2003 03:38 AM  14 years agoPost 9
sluggo

rrElite Veteran

Kitchener Ont

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Well I took out two sets of 105 nhp tails in one day with 710mm razors. Even with 105mm tails and 700mm blades you can get them to hit if you fly hard enough. The only way I was able to get it from not hitting was cut 105mm nhps down to 100mm and run the damping on the head very very tight.

http://www.helihanger.com/gallery/sluggo/DSC00620

I also think they should have added a little to the boom to. Man they did a great job on the prolll but see they are still lacking


hobbet_1981 the cuatro is a nice heli but no milli that is for sure, it is big and heavy and doesn't have the ccpm which is one of the biggest key features of the prolll. All they had to do was add 20mm to the boom and tube drive and it would have been all set.

Chris

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03-16-2003 03:41 AM  14 years agoPost 10
z11355

rrMaster

New England

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could you use the boom and tube from the 1.8?

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03-16-2003 03:48 AM  14 years agoPost 11
sluggo

rrElite Veteran

Kitchener Ont

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Z BobJ has said you can use the tube from the 1.8 and pull the boom out about 10mm. He also said when you do this it is a good idea to pin the boom so it doesn't slid back in.

Chris

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03-16-2003 04:25 AM  14 years agoPost 12
Blair

rrKey Veteran

Republic of Canuckistan

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Yup, talk to Bob J at Skyline.

He'll set you up with the boom and tt from the Futura 1.8

Blair

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03-16-2003 05:08 AM  14 years agoPost 13
wilsonj

rrApprentice

Waikerie, South Australia

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Ryan,

Don't know how you get away with running that combo. I take tails out that are much shorter. I have my head dampning really tight too! Its not chaos that takes the tails out, as much as tic-tocs.


Yeah, I know about the tt from the 1.8m Futura. I run that on one of my machines. But even still I can tip the tails with 105s and 710s. I don't like extending the boom anymore than 10mm though.

I
have tried and tried to time the tails too. It doesn't work, as you still get into trouble with a bit of lead/lag.


I am also sick of having to extend tts. I can accept it on the mill2, but the 3 was designed with big motors, and therefore big blades. I should not have to modify a stock milly3 just to get the tail to perform!

Regards
Jamie

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03-17-2003 12:45 PM  14 years agoPost 14
Rchover

rrKey Veteran

Helping Customers!

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hummmm maybe getting a 1.8 boom and tork tube and cutting it down to be 10 or 15 mm longer than the stock setup might be a good Idea!

Jeremy

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01-08-2004 02:11 PM  13 years agoPost 15
invrtd

rrVeteran

Victorville CA

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What are the Part #'s for 1.8 boom and TT?

Clark

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01-08-2004 02:57 PM  13 years agoPost 16
limey

rrApprentice

Pittsburgh,PA

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Strange, a whole bunch of us here in Pittsburgh are running 710 V's and 105 tail blades and none us of us have had a problem. Maybe the V's don't flex as much as the razor's?

As for throwing the machines around, some of us and very hard of them and yet no problems!

Swatzy talks about clocking the tail, that works for him, I don't bother, that works for me!!!

Steve.

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01-08-2004 08:50 PM  13 years agoPost 17
Futurac

rrKey Veteran

Belgium , Europe

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Longer Boom

Jamie, are you back to Robbe?

to make the booms longer is not an issue
we have stainless tubes avaliable in 1m length, and as well
carbon booms a bit longer (6-7cm) so in 10 minutes of work you can have 3cm longer setup.

Hope that helps

Alex (Formerly Known as RCMarket )

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01-08-2004 09:14 PM  13 years agoPost 18
wilsonj

rrApprentice

Waikerie, South Australia

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Steve, I don't know how you get away with not taking tails off. What ever you are doing keep doing it.

I found I would take tails off even with a hard tail stand take off! The other thing that always did it was fast chaos. But only when I got it slightly off timing.

Hi Alex,

No, I am not back with Robbe. Sure glad I didn't stick around waiting for their Millennium3. . Still I am busting to see if they listened to Bob J. about lengthening the boom. At least in the mean time you offer a solution.

Hey did you ever weigh your Glass Vigor canopies?

Regards
Jamie Wilson

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01-08-2004 09:54 PM  13 years agoPost 19
Futurac

rrKey Veteran

Belgium , Europe

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Jamie

i hope to meet them next month, so wil discuss some issues
i will try to get in contact with their designer, and see what happens there.
Hope to have some nice bits to show to them as well.

Alex (Formerly Known as RCMarket )

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01-09-2004 12:31 AM  13 years agoPost 20
Jeff Swartz

rrKey Veteran

Ohio

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I know I can extend the boom 10mm. And I accept this on the Mill2, as the larger engines were not around when it was designed. But I don't fell I should have to do this mod with the latest edition.
Jamie, are you back to Robbe?
No, I am not back with Robbe. Sure glad I didn't stick around waiting for their Millennium3. . Still I am busting to see if they listened to Bob J. about lengthening the boom. At least in the mean time you offer a solution.
I found this a little interesting.

I ran 105's and 710's for most of the year without any problems... as far as 720-730... WHY??? I have actually gone back to running 700's the later part of the season here. Limey is right, there are a lot of guys in that area that have not seen problems. I also know that sluggo did have problems... well... either run 700's and 105's or lengthen the boom with Alex's kit, or the Quatro kit and be done with it.

I dont think I will make my judgement on robbe because they did not make the tail boom longer. Either way, this wouldn't have bothered me.

Keep up the good work over their Alex.

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HelicopterRobbe Cuatro - Millennium - Nova - Dyna-X › No long boom for Millennium3!
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