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HelicopterThunder TigerOther › R90 / Red Dampers & Oscillation
05-03-2005 09:42 AM  12 years agoPost 1
RotorHead486

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England

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Hiya,

Just got my R90 finished and flying over the weekend.

Had a couple of tanks through it and all is superb! the only thing is at hovering speed the heli oscillates, not a big concern as i have the red dampers in the head (QUK Head) and the manual did mention the heli would do this but it did say at around 1600 Rpm, and i don't think it's anwhere near this RPM.

At hovering RPM, the oscillation seemed to come and go depending on the head speed etc....

Just a question to confirm really, you chaps that are running the red dampers, have you had similair results?

Other than that it flies superbly!! nice and responsive on the head with those red dampers and V Paddles!!

Cheers!
Rotorhead486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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05-03-2005 10:03 AM  12 years agoPost 2
Al Magaloff

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Tach your head speed. You will get the bobble when the head speed drops. Greasing the dampeners/spindle with silicone grease, and 1700+ is the cure. The bottom of autos will still show the bobble. Unfortunately, you can't have stiff dampening for 3D, and soft dampening for stability, all at the same time.

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05-03-2005 11:56 AM  12 years agoPost 3
RotorHead486

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England

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Hiya AL,

Not a problem, i can live with it till it's run in! it just shakes like a $h#ting Dog!!!

Just checking really, with it saying 1600Rpm the wobble will be prominant! will get a buddy to tacho it on it's next outing!

Spindle and dampers were greased when built and installed as normal.

Cheers!
Rotorhead486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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05-03-2005 01:59 PM  12 years agoPost 4
Jeff Swartz

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Ohio

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Unfortunately, you can't have stiff dampening for 3D, and soft dampening for stability, all at the same time.
Well.... at least not quite yet.

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05-03-2005 02:13 PM  12 years agoPost 5
Dino Spadaccini

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USA

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TThelis

Your welcome for the idea on the black dampers tt helis hehehehe

And Jeff is right keep watching for some new kewl stuff for the head damping on the R90s

The setup on the black dampers as follows grease the dampers put into head then grease the area of the dampers where the spindle slides in use allot it helps grease the spindle too slide in though the head, shim as follows for hard 3D the washer and two thin shims per side also remember to turn the dampers around so the nipple on the rubber is facing out toward the grip this setup comes From Allen Jr and is what he is currently flying hope that helps


Jeff here i is again heheheh

RIP Roman JR
Capt USA Align Factory Team Align - Conquer Your heart
Team Futaba

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05-03-2005 03:07 PM  12 years agoPost 6
Gary

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Crosby, Texas

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I quit running those rubber dampers and went to the Carbon CS dampers. I like the feel with those much better.

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05-03-2005 03:19 PM  12 years agoPost 7
Mike Wilson

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Toronto, Canada

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I too run the black dampners based on Dino's suggestion and I love the feel. They are very stable in a hover and rock solid for 3d.


....led

Teambob00

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05-03-2005 03:49 PM  12 years agoPost 8
RotorHead486

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England

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I'm going to Tacho it on it's next outing as the head/dampers and axle were greased during construction and installation as i do with all my machines.

It seems it's all down to the low head speed as through the two tanks it had through it it would smooth out and then start again, will see what it's doing with the tacho but i think AL is correct! once the engine starts performing and the head speed is set to 1700+ it will cure it.

Failing that a set of CX Dampers will be ordered!

Like it is said! It's either one or the other, not both!!!!

Cheers!
Rotorhead486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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05-03-2005 05:47 PM  12 years agoPost 9
Al Magaloff

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Raptors are asleep @ 1500-1600 anyway.

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05-03-2005 06:27 PM  12 years agoPost 10
bl8zn

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New Jersey

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I have a nod after applying elevator input. I have a R90 with metal head and grips. Used black dampners as mentioned, the reds and the CX's. All still do it. Rubbers all greased up (except with CX) and shimmed properly. When I was running plastic grips, if I saw the nod I would just up the shims and all was well. Just can't seem to get the head dialed in without this nod. Any ideas? Rubbers are new. Headspeed 1600, 1750, 1850.....still nods

Sorry...don't mean to jack the thread but all is relative

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05-03-2005 09:59 PM  12 years agoPost 11
raptor30

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Tilburg,The Netherlands

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I heard about the black rubbers before,but also that there are 2 sort of black dampers:

The black ones from the Raptor 60(the wrong type),and the ones that are included with the TT metal head.
The black ones that are included with the metal head are the ones that should be used right?
I tried to find these seperately but without succes.

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05-03-2005 10:27 PM  12 years agoPost 12
BlakeMcBrayer

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Georgetown, Ky

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I think ALOT of your wobble is due to low head speed. I have a Quick UK head on my 90 and it will shake like heck at 1600, beside like Al Magaloff said, they are flat alseep!

Leave it as is and get the head up around 1750 or so, it will more than likely go away. I'm running the CX dampers and spin mine as fast as 1860 with no trouble. I know the manual says 1600, but I hate to say this, but it's wrong!

bl8zn,

I get the little nod myself when hovering, it disn't start untill I put the CX dampers in. I think (my quess) that these super stiff dampers can't soak up the slight , soft hovering inputs very well, thus the nod or bounce back from an input. I might be wrong, but it seems correct in my mind anyway.

.

Don't come off the throttle untill you see your GOD!

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05-03-2005 11:35 PM  12 years agoPost 13
RotorHead486

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England

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Hiya Blake,

Thanks for that, it's the confirmation that i was looking for!!

It was it's first outing over the weekend after completion so given a few more outings and plenty more fuel through it and i should be able to get it dialed in and crank up the head speed!!

Cheers!
Rotorheda486

One Reason For Crashing'Rogue Servo Bent on World Domination'!!
FLP Flight Team

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05-06-2005 03:26 PM  12 years agoPost 14
Jarold CrrApprentice - Somewhere near Pittsburgh, PA - My Posts: All  Forum  Topic

Yeah, you can have it both ways! INFINIVATION! They're coming for the Raptors!
Are these what you were referring to Dino?

I hear you will be carrying them? I have them in my EVO and they are absolutely amazing! I've tried the others, but these are great!


Guess what? I just saved a ton of money on my Auto(rotation) insurance!

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05-07-2005 01:55 AM  12 years agoPost 15
bl8zn

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New Jersey

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NICE!

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05-07-2005 03:34 PM  12 years agoPost 16
Jeff Swartz

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Ohio

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I have been flying these for a few months now.

Simply the best design out there to date!

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05-07-2005 04:33 PM  12 years agoPost 17
Dino Spadaccini

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USA

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black ones

Raptor30 the rubbers that come in the se kit are blue or red not black.

The black ones for the 60-size heli I have been running them for about 20 flights no problem with the dampers installed nipple out and the washer and two shims. The new style dampers shown. I have flown also they offer allot more over the stocks ones what ever color you use. First you will see how quite the heli is in a hover hands off no problem even in the wind, the 3d performance gains are great very clean and crisp. Your input will lead you to a new curve in your flying as you will see how much the rubber ones really masked,if you put into much input to make a maneuver happen, Jeff has been working hard with the mfg and from talking with him they have found a balance for the R 60/90 heli keep watching the thread for more info but I can say they are quit amazing.

RIP Roman JR
Capt USA Align Factory Team Align - Conquer Your heart
Team Futaba

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05-08-2005 01:30 AM  12 years agoPost 18
Jeff Swartz

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Ohio

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Jeff has been working hard with the mfg and from talking with him they have found a balance for the R 60/90 heli
Working hard... LOL... Me no, them.... yes....

I just show up at the field, and I have a crew that starts changing stuff on my heli!!

Actually, I am still flying version 1 in my key machine, but have had others in my #2 macine.

The latest version are made from a really cool material that is used as self luberacating heavy machinery bushings. so the spindle will be tight but never get sticky like in the rubber ones.

I would advise on using them in only a metal head.

Ill post some pics in my gallery in the next few days.

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05-08-2005 01:47 AM  12 years agoPost 19
raptor30

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Tilburg,The Netherlands

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Dino,i didnt say that the 90 SE comes with black dampers
I heard someone say the the black dampers from the Raptor 60 are not the same as the black dampers supplied with the TT Metal head.

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05-08-2005 02:22 AM  12 years agoPost 20
AMainMaker

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Nappanee,IN

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Those are some interesting dmpners. Will they be made forthe 50 size also???
Jason

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HelicopterThunder TigerOther › R90 / Red Dampers & Oscillation
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