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HelicopterMiniature Aircraft Whiplash & Fury 55 › Spectra updated tail rotor
05-05-2005 03:51 AM  12 years agoPost 1
Jim Cimino

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NE Pennsylvania

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I was one of the first to receive a Spectra kit months ago and have delt with the teething pains of this new kit. I talked to Tim awhile ago at MA and he told me to send him my tail rotor assemble and they would replace the output gears and the output shaft in the assembly. I sent it back to them and received it back about two weeks ago. Because of other things, I just put it back together Monday night and flew it for the first time tonight...the new tail shaft is BENT. I am loosing all faith in the helicopter. Parts were missing from the kit when I received it, it took almost a month and repeated phone calls to get fuel line for it, I waited almost three weeks for the updated tail rotor assembly, was very afraid to fly it until it was updated and now the new (very soft) saft is bent. I have had this helicopter for months and have less than a half gallon of fuel through it. I am seriously thinking of selling it, but until now have always liked my MA stuff. I don't know where it's going to end and am getting a little tired of this. I am just venting because I don't know what else to do at this point.
Jim

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05-05-2005 04:38 AM  12 years agoPost 2
Toadster25

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Iowa

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Thats not good! Do you know what may have caused the shaft to get bent or did it come back to you bent?

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05-05-2005 12:24 PM  12 years agoPost 3
G-DAVE

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Tyne and Wear , England

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jcimino -
Know what you mean I'm in exactly the same boat - bought my kit at Xmas and it's had less than a gallon throu it.
It's on my shelf at the moment with the tailrotor box lying at the Importers waiting for the upgrade parts.
I'm a bit pi~~##ed off with the whole Spectra thing.
Dave

If it's not fun, your not doing it right !

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05-05-2005 01:46 PM  12 years agoPost 4
vetrider

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Daleville, AL (Ft.Rucker)

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Jim, I don't ever remember having any tail rotor in my hands or installed that I didn't spin it to see how free or true it was before any flying took place.
I find it hard to believe that it was not noticed till it was in flight.
Search within yourself and see if it couldn't have been bent in handling.
The Hirobo Freya's have soft tail rotors too but don't bend unless bumped by an outside force.

Nolan

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05-05-2005 02:44 PM  12 years agoPost 5
boomstriker1234

rrApprentice

Israel

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did you told it to MA? if so, what do they answered you?

is this tail shafts problem is only on the spectra or in the Extreme\Tempest to?

"Never argue with A Pig. Both of you will get dirty, but the pig will enjoy it ."

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05-05-2005 02:50 PM  12 years agoPost 6
GM1

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Tallahassee, Florida US

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Spectra

From what we can tell, the problem exists only in the Spectra-G. I have flown the snot out of the open TRs on the other models and have had zero problems since the intro of the gray gears. Apparently, the very strong power pulses of the gas motor sets up a resonance that fatigues the TR shaft, The nitro motors just don't do it, hence no problems.
MA is trying to get all these gassers taken care of but it's difficult when you don't have registration for all of them. Sorry about the bent one. The TR shafts are moderately soft and can be damaged in shipping.
Gordie

On a dog sled team, if you're not the lead dog, the view never changes.

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05-05-2005 02:52 PM  12 years agoPost 7
jb_turner

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USA

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Did it get bent before or after you took a dirt bath?

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05-05-2005 09:37 PM  12 years agoPost 8
too many helis

rrNovice

windham maine

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I know exactly what your talking about. I too bought mine back at christmas time and it has been a fight the whole time. so far I have almost 2 gallons of fuel through it. and it is on the shelf now. this helicopter has run my life for the past 5 months now with nothing but problems let me count the ways.

missing parts. from step 1. MA sent missing parts

short fuel line. replaced all lines nothing matched what came in kit

3 threaded balls broke on install. hole was drilled too deep in manufacturing leaving only a few thousandth at the shaft. Talked to MA on this one; answer was, fortunatly they break on install. I found out later this was not the case. throttle servo ball sheared off in flight. landed the heli fine

tail rotor control was replaced with central hobbies titanium ends

sheared tail shaft in flight. somehow managed to land the heli as it was spinning at incredible rate of speed. very very lucky it didn't hook a skid and total the heli.

two delrin balls melted.

two sets of rubber isolaters junk

fan surface beat up

clutch driver bearings shot and bent shaft. the last four items listed are a result of improper clearance between the units. MA is sending a .015 thinner base plate for the motor

these are the items i feel are directly related too manufacturing. now for the rest of the problems.

hatori muffler loosened up three times.

choke lever kept closing in flight shutting motor down

stock plug cap was arcing inside the rubber boot

seized 231 motor my fault, but followed MA's operators guide

sheared servo arm

stripped gears in 9252 servo

stripped gears in 531 servo

melted skid mounts

heavy duty NGK plug cap wasted.

after seizing the stock motor i installed a hanson 26 thinking because this motor is balanced I would avoid vibration issues. but have not. after talkin to MA they said the heli isn"t designed for that kind of power, but in the instructions they list a 26 as an option.

I have two 1004 se kits and a fury extreme with a 90 in it, and have never had issues with there products. I don't want to start any wars, but I think MA sould have maybe thought this one out a little better maybe.

I have close to 3 thousand in this thing by now and it's getting to the point I don't dare fly it anymore for safety reasons. I thought this hobby was supposed to be fun? I should have never given up paper airplanes

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05-05-2005 09:53 PM  12 years agoPost 9
Gary

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Crosby, Texas

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I just bought a Spectra and I also have the replacement tail shaft. I haven't flown it yet, but after talking to the guys at MA it's not even happening on all of them. From what I gathered, it's happening when the tail rotor has too much vibration and isn't holding. Before I fly mine I'm going to go ahead and put the new shaft in it and hope there's no problem.

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05-06-2005 12:10 AM  12 years agoPost 10
sgt1959

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Easley SC

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I dont know whats going on but I have two spectra gs one with 231 and one with modified 26 and havent had any problems or open tail box failures if the enginge isnt set up right youll melt the spacers between bottom plate and strut mounts especially during break in Ihope tim straightens this out for you guys good luck oh yea I have close to 4gals throught my 231

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05-06-2005 03:08 AM  12 years agoPost 11
Jim Cimino

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NE Pennsylvania

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Well I can tell you that I did not damage it and did not "take a dirt bath". I should have checked it when it came back, but I assumed that since MA made me send it to them to replace it, that it would be right when I got it back. The flight was very short, like most of them so far. When you have spent as much time as me waiting for parts, you just want to get it together and fly it. I have not had any failures on the tail either, but Tim offered to upgrade my tail because of my concerns for failures. They replaced the gears and the shaft, when I sent it to them it was it perfect working order, but I was afraid of all the failures being mentioned on the list. I contacted MA today and they said to send it back again and they would make it right, so I guess it will be another three weeks or so before I get to try it again. For the people who doubt it, I hope you have better luck with your output shafts.
Jim

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05-06-2005 03:33 AM  12 years agoPost 12
Dr. Fibinotchi

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Sioux Falls SD

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ouch.

Well it seems my luck is not all that bad..lol. I am just waiting on two screws from Ma for the stock exhaust. I had them prority shipped. Day two just finished. They hopefulyl with show on day three after the order. Hopefully the ball was not dropped....


I just got my gears changed out on my tail and recived them back. Before I was doing some 3d with the black tails before I knew. Thank god to RR and sent them in.

I know the 26 is not MA's 'love' in their bird, but like it or not almost everyone else in th more musclular setup is in a 26 with diffrent mechanics. I know a whole slew of guys about to fire a 26 up in xyz mechanics.

-Cody

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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05-07-2005 03:26 PM  12 years agoPost 13
sgt1959

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Easley SC

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jcimino

if your so afraid to fly it with the open tail box and believe me I dont blame you why dont you put a closed tail box on it till they get yours fixed I know its not right being how you spent all that money and all but at least you can still fly

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05-07-2005 04:46 PM  12 years agoPost 14
Hawk4flyer

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Deland,Florida

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sorry for all the troubles with your Spectra's. I know that Tim and his crew are working very hard to cure the issues with the Spectra TR's. In fact, I'd say that is Tim's top priority.
The issuses are with the tempered output shafts. The Spectra needs a softer tempering than the other Fury's. At the moment they are waiting for a new batch of output shafts to come in. Tim will take care of you guys, just as fast as he can.

Don't loose faith just yet. They are aware of your concerns and will do what it takes for make you happy.

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05-08-2005 04:01 AM  12 years agoPost 15
Jim Cimino

rrKey Veteran

NE Pennsylvania

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sgt1959

I have thought about using a different gear box and even looked at the one on my SE. I am not sure about the gear ratio though. I would also like to see MA get these problems fixed since most people have between 2 and 3K invested in these Spectras. I alread have the new softer output shaft, but I think they might be a littel too soft. I think MA also thinks this and the soft shaft is just a quick fix. Bob told me on Friday that they are making another new shaft and collar for the gear that will remove the pin on the gear and use two set screws that will go into flats on the shaft. This might fix the problems. I think the hole on a 5mm shaft takes too much metal when used with a gas engine. They should have used a 6mm shaft. I am sending the gear box back to them and will try the new set up when they receive it. I don't really want to spend the money for a different gear box, I have spent enough money on a helicopter that I do not have confidence in. They should be able to make this set up work...dosen't Bergen use an open gear box on their gassers?
Jim

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06-01-2005 11:18 AM  12 years agoPost 16
aileron bail

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The guy with the dog named Aileron

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How come everybody knows if you dill holes in shaft it will fail but miniature dont know this .STOP THE HOLES PLEASE

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06-01-2005 01:34 PM  12 years agoPost 17
mrNoodles

rrProfessor

Borlänge, Sweden

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A new shaft is on the way.
Uses a flat spot for a set screw instead of a drilled hole.

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06-01-2005 03:33 PM  12 years agoPost 18
sgt1959

rrApprentice

Easley SC

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jcimino

I totally agree I know HC has open tail gear boxes on all his models so far no issues of coarse these arnt on spectras but same box also I have a closed box on mine flys good but if I hadnt had a spare box I dont think id spend the money either

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06-08-2005 03:01 AM  12 years agoPost 19
Jim Cimino

rrKey Veteran

NE Pennsylvania

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Well, MA has had my tail gear box for over a month (again) and I still don't have it back. Bob will not return my e-mails as usual, I guess all the crap that Tim gave me about giving me good service was just that. I will have to call Tim in order to get answers.
Jim

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06-08-2005 03:21 AM  12 years agoPost 20
thenewguy

rrElite Veteran

Corvallis, Oregon Where there is liquid sunshine!

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I just talked to Minature last week. They told me the new shaft with the flat spots would be. In about a week and a half. They gave me very good service on this topic, and assured me the problem is being work with. I have 2 Spectra kits and plan on sending my tails in soon. These tail problems will get fixed, and then we will have the best flying gassers out there.

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HelicopterMiniature Aircraft Whiplash & Fury 55 › Spectra updated tail rotor
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