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06-03-2010 08:16 PM  7 years agoPost 1
Gasser4

rrNovice

quakertown pa

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My name is Gary. I was flying electric, I had three electrics. I went with the bat 26 and Zenoah 26cc electronic ignition. Overall I am much happier flying the gas over my old electrics. The thing I really love about the gas helicopter is that you can land and gas and go. With the electric I was charging the battery two hours after a six minute flight. I’d say a 10 minute flight, then land and inspect the helicopter. After two gallons of fuel through the helicopter everything seems to be worked out with screws loosening from vibration. I inspect the helicopter after every flight; everything seems to be ok now. Maintenance and inspection are the key to flying a helicopter. I am so happy now I can fly all day.

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06-03-2010 08:25 PM  7 years agoPost 2
JuanRodriguez

rrProfessor

The Villages, Florida

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Hey Gary,

Welcome to RunRyder..... I see this is your first post.....

Did you build your BAT ?? If so, it might be beneficial to share some building "tips" on assembling the kit......

There is a fellow on here that can't seem to get his sorted out and flying due to severe vibrations.

Your experiences might be helpful !

Been there, done that and old enough to know better.....

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06-04-2010 05:13 PM  7 years agoPost 3
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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Nice heli.
I have enjoyed mine over the last 4 1/2 years. I started with the Gas-her, then upgraded to the Bat frames when QWW changed the design. Once your frames get "bedded in" you will find that the screws don't come loose near as often. The engine should also run smoother with time as well.

Juan,
I have no more vibration in mine than a nitro bird...well, maybe a little more Any how, I just make sure that my blades...head and tail are balanced. I also balance my tail rotor assembly....and make sure the clutch runout is within tolerance. I think I have mine down to .002 or less with little effort.

I have tried to think of some things that the guys that are having vibration problems to check, but all of the posts seem to have it covered. Usually vibrations in the tail are due to engine tuning or tail rotor out of balance. Richening up the engine will tone that down....usually. Overall vibrations in the lower frequency range are the main rotor. I did notice that I am running the sport head and the guys experiencing vibs are running the pro head. Maybe there is some sort of way you have to hold your mouth when you assemble these heads. That is really the only difference I see in what I fly and the others.........

Gas is Great
Camper Fuel is Better!!
QWW Helis

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06-04-2010 06:51 PM  7 years agoPost 4
JuanRodriguez

rrProfessor

The Villages, Florida

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Juan,
I have no more vibration in mine than a nitro bird...well, maybe a little more
Same here..... I have flown two different gassers (Xcel and Bergen) and no problems with vibration with either.....

Others in our heli groups have had the same experience with their gassers.....

I guess it must be the magical air molecules in Upstate, NY !!

Been there, done that and old enough to know better.....

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06-07-2010 04:08 AM  7 years agoPost 5
smallplanes

rrElite Veteran

S.C. ,SSA

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I got a ton of vibration in my bat and i have been trying to track it down i,m going to try and balance the head and tail which i have never done before. I'm not sure how to do it, i read post on it but i'm still confused,should i leave the on it with the blades on or off while balancing ? I wish you could tell me what you did while building it for it to come out so smooth? I have the QWW 27cc mod motor and i have a lot of vibration i'm not sure if it's the motor or the head? I'm going to send it back to Irwin . Let me know if you have any tips?

Thanks
Ivan


Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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06-09-2010 04:48 AM  7 years agoPost 6
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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I had the dreaded "mystery vibration" the last couple of outings with my bat. I am going through the process of breaking in a new top end on my engine and the vibrations were getting pretty bad at times. It seems like everything that I do with the needles doesn't seem to help.
I then tried another approach. I changed the pitch curve in normal so that my engine is loaded more at lower rpms.....and TADA....things smoothed out quite a bit then.

So....try lowering your throttle curve a little and adding to your pitch curve earlier. See how it behaves then.

Gas is Great
Camper Fuel is Better!!
QWW Helis

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06-12-2010 03:55 AM  7 years agoPost 7
smallplanes

rrElite Veteran

S.C. ,SSA

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Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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06-17-2010 05:38 PM  7 years agoPost 8
Gasser4

rrNovice

quakertown pa

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I am extremely satisfied on the 26cc gasser. I’ve had some problems, I think mostly due to my inexperience. This is my first gasser. She is really smooth, with very little vibration. The fellas at the shop/warehouse have been extremely helpful. No matter how busy they are they will stop and take a minute to help me. It is a very comfortable helicopter to work on due to the large size.

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06-18-2010 03:13 AM  7 years agoPost 9
jimboflies

rrElite Veteran

Beaumont, Texas;

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Welcome to RR Gary.
That is an awsome looking heli. What head speed are you running on it?

EP8 EX twinring frame
Quick of Japan
EP8v2 EX
EP9

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07-03-2010 06:29 PM  7 years agoPost 10
Gasser4

rrNovice

quakertown pa

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I recently had to trouble shoot a vibration in my tail. I checked every shaft I could and still had a shake. What I have found is the engine was out of tune. I would not have thought this. By richening the carburetor from say the 12 o’clock position to the 10 o’clock position you can get a lot of the vibration out. Also, a leaning mixture adjustment on the low end seems to help. The carburetor is very sensitive I have found. Hope this helps anyone else with a similar issue.

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07-04-2010 01:02 AM  7 years agoPost 11
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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Gasser4 I totally agree. It's been my experience with gassers that about 85% of the vibration that can be experienced will come from the engine being out of tune. I have found this out by changing the top end and I had a super smooth heli before I did the change out, but after during re-break in I would have some pretty serious vibrations.

Spent a lot of time turning in VERY small increments until I finally hit the "spot". Having a linear thottle setup mechanically to start with also helps. I also feel that it takes at least 2 gallons of fuel to break in a new engine.....at least with me it does.

Gas is Great
Camper Fuel is Better!!
QWW Helis

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08-14-2010 06:48 PM  7 years agoPost 12
Gasser4

rrNovice

quakertown pa

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Well, I’m on my fifth gallon of gas, and everything is going well. The secondary clutch bell bearing I have found needs to be installed with good alignment. When the bearing is installed properly it will last. I had a two go out on me until I figured it out it all revolved around alignment.

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08-15-2010 04:35 AM  7 years agoPost 13
S76 Mech

rrElite Veteran

Hatboro, Pa.

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Hey Gary.

I'm guessing that gyro / tail problem we troubleshot got fixed? Glad to hear it. Talk to you soon.

Rick

Gaui Greatness X7, X5, NX4, X3

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