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HelicopterGasser Model RC HelicoptersOther › Considering Getting A Gasser -Which One?
10-21-2009 01:02 PM  8 years agoPost 21
turboomni

rrProfessor

East of the Equator

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The dead of winter maybe a great time to buy a used gasser at a good price then as a winter project tear it down and make sure it's right.

Setup is everything, All my heli's can fly far better than I can pilot them

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10-21-2009 02:10 PM  8 years agoPost 22
4 stroke flyer

rrApprentice

Dowagiac,MI

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I would not rule out the Bergen. I know the parts are a bit pricey, but you do get what you pay for with a Bergen. The support you will get,At no extra charge. you would run out of money trying to pay for some where else. I speak with a lot of experience with Bergen. Good luck with your choice. I know I am.

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10-21-2009 05:11 PM  8 years agoPost 23
Mr.Green

rrVeteran

Kaysville, Utah

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I can for sure rule out any QWW products. I've tried their helis before and had the pleasure or knowing first hand about Irwin and will never own another QWW heli. I think of all the possibilities out there I'm leaning towards either an MA Spectra G or a Bergen. The initial costs will be higher, but I think I would be happier with them in the long run.

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10-21-2009 05:30 PM  8 years agoPost 24
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I've tried their helis before and had the pleasure or knowing first hand about Irwin and will never own another QWW heli. I
I've heard others say the same.

With MA, you have Brian James here on Runryder, and with Bergen, you have Chris Bergen here on Runryder.

I chose the MA Spectra because I wanted the most aerobatic (aka lightest) gasser available. The Trex 700G may be a great helicopter and even better than the Spectra, but it is not for sale yet.

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10-21-2009 06:14 PM  8 years agoPost 25
Mr.Green

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Kaysville, Utah

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I would really like to wait and see how the Align gasser is when it comes out. That would definately be in the running as well.

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10-21-2009 06:24 PM  8 years agoPost 26
Justin Stuart (RIP)

rrMaster

Plano, Texas

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The only issue I see with the Align Gasser is that they will probably release it to the public before it has been sufficiently tested. I think in essence it will just be a Trex700N with a gas engine installed. While this may fly well, chances are the higher weight and higher vibration of the gas engine will cause certain parts to fatigue sooner than expected.

I would wait on the Align gasser until they release version 2 and the failure points are corrected.

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10-21-2009 06:43 PM  8 years agoPost 27
oldfart

rrProfessor

Vancouver, Canada

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I really can't see what all the fuss is about! I purchased a predator with the hanson 3d engine assembled it, balanced main and tail blades and then learnt to fly with it. I have been flying for about 2 1/2 years and I love my predator, I found it the easy to tune and setup.
I look forward to flying it every weekend.
I agree, and due to the design etc., some seem to require less help to get into the air successfully then others.

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10-21-2009 09:21 PM  8 years agoPost 28
predatorman

rrVeteran

Falkland Islands

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I think the main attraction for the Align version is the cost of parts? I have had a good look over the 700N and must say its a nice kit.

But....like mentioned before....I would wait for a while and see how the first gasser version holds up.

I can speak for Centurys Predator though, nice heli...items like bearings can be a bit rubbish. They last ok if you dab some oil on them every now and then.

Never seen a Bergen, only in pics...sure sounds a good quality machine though.

Rob

Quality takes........time!

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10-22-2009 12:41 AM  8 years agoPost 29
rbort

rrProfessor

Franklin, MA - USA

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You're absolutely correct

Once the machine is assembled with the electronics, and the first start up is done it generaly takes a half day of working with it to put it in a generaly good flying helicopter status.
Sorry, for the first-time Gasser buyer/builder, this statement just doesn't hold true. If you have built, setup, and tuned numerous Gassers, yes, you may be able to do it in a half day. Otherwise, be realistic and give yourself several weeks or a month at least.
You're absolutely correct. Even me, a seasoned veteran with gassers will take longer than 1/2 a day to get a gasser perfectly set-up. I've traveled all around this summer and setup Predators, Bergens, and Spectra's for people and as I'm maticulous and want to make things perfect, its not unusual for me to spend a couple of days on it. And this is coming from an expert. When I was a beginner back in 1997, I remember it took me 76 flights before I finally felt that I was getting comfortable with my 1005 and the pucker factor was going or gone and that it was setup well.

Excaliber's statement is much more accurate as quoted above, and when I do setup someone's machine (I did a couple at IRCHA) I tell the guy I just fast forwarded you 6 months of trials and errors now just go fly. Ask CitationX here on runryder, he keeps sending me instant messages on my phone saying his Spectra is flying so nice he's afraid to touch it or change things on it after my "annual inspection" as he put it.... I do encourage him to work on it as he needs to learn, but at least he's got a good running base model to work with.

-=>Raja.

MA 1005 Hanson 280, 4153 flts
Spectra 27 3DMax, 3226 flts
Whiplash V1 Hanson 300, 1485 flts
Whiplash V2 Hanson 300, 248 flts

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10-22-2009 12:13 PM  8 years agoPost 30
predatorman

rrVeteran

Falkland Islands

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Never a more true outlook. It pays dividends if you spend some time and effort getting your heli to run smooth.

Even the little helis like the Trex series, no matter how cheap, all benefit from that TLC.

Quality takes........time!

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10-22-2009 05:30 PM  8 years agoPost 31
smallplanes

rrElite Veteran

S.C. ,SSA

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I sure wish we lived closer Raja i could use your help big time. I can setup a nitro in a few hours but they don't have the vibration problems of a gas heli. I would love to see someone build and setup and have a good flying gasser in a week. I thought i was close on my setup until my tail pushrod jumped off and i went into a very fast spin and had to auto like that. I did luck out with just a slight bent flybar and no other damage. I pulled my motor and sent it in for service with Hanson and i've got it back but i'm not able to put it back in yet. Let me just say buy a Hanson motor from the start and that will cut out a lot of lost time.

Thanks and Good Luck


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

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10-22-2009 05:48 PM  8 years agoPost 32
Carey Shurley

rrElite Veteran

Orlando, FL - USA

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frankly I think that if you could run about 10 gallons of fuel through the motor before you ever put it in a helicopter, it would make the new model startup process a lot easier

there are clear changes in the behavior of the motors as they break in including running smoother as you reduce the amount of oil.

unfortunately its impractical and I'm sure plenty of folks would disagree with me.

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10-22-2009 06:04 PM  8 years agoPost 33
pgkevet

rrKey Veteran

Wales

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unfortunately its impractical and I'm sure plenty of folks would disagree with me.
I'm not sure about impractical.. just not usual. I suppose no reason why you couldn't stick a prop on it for load, clamp to a bench and run-in. With some simple additions even that could be automated and offered commercially - if there was a market.

EDIT:.. my hanson has just arrived and I was toying with using headloaders and running a gallon through on the ground...

pgk

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10-22-2009 07:09 PM  8 years agoPost 34
Chris Bergen

rrElite Veteran

cassopolis, MI USA

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Wierd,
I find they run smoother with MORE oil...

Chris D. Bergen

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10-22-2009 07:43 PM  8 years agoPost 35
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I'm not sure about impractical.. just not usual. I suppose no reason why you couldn't stick a prop on it for load, clamp to a bench and run-in. With some simple additions even that could be automated and offered commercially - if there was a market.
There is no load on the engine when it is at idle, right? So why not just bolt the engine to a board (with the fan attached) and let it idle for a gallon on the ground? Then you wouldn't have to bolt a prop to it or anything like that?

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10-22-2009 08:27 PM  8 years agoPost 36
pgkevet

rrKey Veteran

Wales

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There is no load on the engine when it is at idle, right? So why not just bolt the engine to a board (with the fan attached) and let it idle for a gallon on the ground? Then you wouldn't have to bolt a prop to it or anything like that?
I understood that ideal run-in would be with increasing and varying loads during the process..starting gentle with frequent cooling cycles and adding load and variations after the first tanks..

I'm still thinking headloaders because that way it's safer and requires less strapping down (compared to blade load).. and could disconnect the tail servo to save wear on that when the engine is in it's rough phase.. Indeed the cost of headloaders might well repay by saving servo wear..?.. Could easily run a gallon through in the back yard..with throttle variances, cool cycles. and the comfort of coffee, snacks a chair and even a book...over a day or so.. and get the pruning done and leaves swept up with a bit of multitasking..

pgk

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10-22-2009 09:22 PM  8 years agoPost 37
Carey Shurley

rrElite Veteran

Orlando, FL - USA

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my point was to break them in OUT of the helicopter. New motors are tougher on the airframe because they vibrate even more until they break in and smooth out some. The head loader idea doesn't address that.

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10-22-2009 09:30 PM  8 years agoPost 38
pgkevet

rrKey Veteran

Wales

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my point was to break them in OUT of the helicopter. New motors are tougher on the airframe because they vibrate even more until they break in and smooth out some. The head loader idea doesn't address that.
No argument from me... but it would require more effort and sourcing some plank / prop converter/bolt thingie, plumbing another tank and mounting a servo (or I suppose one could just use a bit of string)..

In my case this is an engine replacement into my Spectra so the headloaders are a lazy part-way solution I'm considering..

What adapter and prop size would be worth using?

pgk

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10-22-2009 10:06 PM  8 years agoPost 39
Justin Stuart (RIP)

rrMaster

Plano, Texas

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For a 26, the prop would be approximately a 16x10 up to an 18x6.

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10-22-2009 10:11 PM  8 years agoPost 40
pgkevet

rrKey Veteran

Wales

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...but can you just stick a washer each side and bolt it straight to the top of the taper?...

pgk

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HelicopterGasser Model RC HelicoptersOther › Considering Getting A Gasser -Which One?
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