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Gasser Model RC Helicopters > new to mongoose heli

plantone
Veteran
Location: Rotorua New Zealand

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HI anyone who has a mongoose heli i have just acquired one & flew it for the first time today, what a beautifully built machine. Can anyone give me some pointer i need to do or look out for on this model also head speed for maximum stability needle settings etc.

Cheers wayne

Mongoose
trex500 in Airwolf body
trex600snp
trex700
Hirobo chinook
Compass Atom

11-01-2009 09:11 AM

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WillyS
Heliman
Location: HOBART, OK USA

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Let's hear about your experience since no one else will speak up.

11-03-2009 05:32 AM

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BeltFedBrowning
Veteran
Location: Albany, MO USA

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I run 1150 head speed with Rotortech 830's. Sounds awesome on descent. Like most, I run the needles at 1 1/4 to 1 3/8 turns out and use my temp gun on the head to make sure I am under 230 degrees. I use Amsoil synthetic at 3.5 ounces per gallon of 87 octane gasoline.

11-03-2009 02:58 PM

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rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

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1150 head speed

You can scale around like that, but if you want better performance you're going to have to turn up the head speed. That thing can fly with 710/720's and with about 50% more head speed.

-=>Raja.

1005 Gasser, G26 3DMax++, 2205+ flights
Spectra-g, G26 3DMax, 870+ flights

11-03-2009 03:15 PM

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lrogers
Key Veteran
Location: Mobile, Al

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I'm running 1400 rpm on the head using 810's. Did you get a generator with yours? If not, watch your on-board battery voltage. The way that RC 26 sips fuel, you can easily outfly your battery. I have yet to fill the tank more than half way and I'm getting 15-18 minute flights.

You will appreciate the low parts count of the Mongoose after that first oops. Yes, this is the voice of experience!

I was amazed how fast this baby will go when you let it loose; it ends up at the far side of the field in a hurry. It's size and color (orange in my case) make it easy to see even at the far end.

Mine is sitting on the table now getting a Stator Gator and GV-1 installed.

Larry Rogers - R/C Helicopter Pilot

11-03-2009 11:14 PM

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plantone
Veteran
Location: Rotorua New Zealand

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Thanks guys for the response i thought for a moment i was the only one with this awesome heli. I tached the head & is running at 1480 in the hover so i might drop it a bit. Oil is Stihl oil for chainsaws @ a mix of 40 to 1 & 91 octane petrol this was reckomended to me by the chainsaw shop & after 5 litres change to 50 to 1. What do you reckon ???

Mongoose
trex500 in Airwolf body
trex600snp
trex700
Hirobo chinook
Compass Atom

11-04-2009 07:19 AM

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Fenestron
Heliman
Location: Denton, Md.

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oil/mix

I run a 25 to 1 mix, synthetic/oil. I have great results with this mixture.

11-04-2009 10:49 AM

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lrogers
Key Veteran
Location: Mobile, Al

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I had my engine worked over by BH Hanson and their recommendation was 28:1 with non-syntheic for the first gallon, then switch over to a good syntheic. I'm about to make that switch. My next gallon will be 32:1 with Amsoil Sabre and 40:1 after that.

Larry Rogers - R/C Helicopter Pilot

11-04-2009 11:10 AM

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rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

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Sounds like what I would do

Quote
I had my engine worked over by BH Hanson and their recommendation was 28:1 with non-syntheic for the first gallon, then switch over to a good syntheic. I'm about to make that switch. My next gallon will be 32:1 with Amsoil Sabre and 40:1 after that

You won't have any trouble with that, mine run like this.

-=>Raja.

1005 Gasser, G26 3DMax++, 2205+ flights
Spectra-g, G26 3DMax, 870+ flights

11-04-2009 03:34 PM

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plantone
Veteran
Location: Rotorua New Zealand

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Have you guys played with the mixing ratio to get more stability or 3d out of the head mine is set at the centre hole of the three from the blade grip & the outer hole on the wash out arms.

Mongoose
trex500 in Airwolf body
trex600snp
trex700
Hirobo chinook
Compass Atom

11-06-2009 03:31 AM

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lrogers
Key Veteran
Location: Mobile, Al

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No, I have have left mine just as it came from Airstar. I'm not into 3d and my Mongoose is destined for a scale body. I got the GV-1 installed last night and the Stator Gator truly is plug-n-play! Now I have to figure out how to do a mix so throttle hold will over-ride the Gv-1 (I THINK I have that done now, function test tonight or tomorrow).

Larry Rogers - R/C Helicopter Pilot

11-06-2009 11:06 AM

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rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

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Easy

Quote
Now I have to figure out how to do a mix so throttle hold will over-ride the Gv-1

Switch "STSW" ON from INH.

Do a search I posted a whole thread on "how to" install a gv-1, its a step by step approach that will walk you through all the settings.

-=>Raja.

1005 Gasser, G26 3DMax++, 2205+ flights
Spectra-g, G26 3DMax, 870+ flights

11-06-2009 02:39 PM

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BeltFedBrowning
Veteran
Location: Albany, MO USA

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+1 for searching for Raja's set-up thread on the GV-1. Find the one with instructions on the "hidden" menu as well. I printed them out and I keep them in my flight box. Thanks Raja!

11-06-2009 02:50 PM

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lrogers
Key Veteran
Location: Mobile, Al

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Thanks Raja! I'll do that!

Larry Rogers - R/C Helicopter Pilot

11-06-2009 10:41 PM

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ppridday
Veteran
Location: Canadian in Detroit Lakes MN / Houston TX

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This is excellent. Larry will not have to worry about battery power at all tomorrow so he will be performing some wild 3D with his Mongoose. I will report back with full details...

Paul

"There's someone in my head, but it's not me..."

11-06-2009 11:07 PM

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lrogers
Key Veteran
Location: Mobile, Al

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In your dreams, Paul!

Raja,
I just tried that switch setting, I can't believe it was so simple! Thanks!!!!!!!!

Larry Rogers - R/C Helicopter Pilot

11-06-2009 11:16 PM

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jfint
Senior Heliman
Location: Simi Valley, CA

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As these things come from airstar the heads tend to be set-up for scale or training, they are a bit asymmetrical. On mine I adjusted the linkage rods so that zero pitch was in the center of the swash travel. It is pretty easily achievable with the stock push rods, its just doesn't tend to be the way that they are set-up from airstar, and you'll likely have to change it to reach the desired negative pitch and have the nice symmetrical head you are used too.

11-07-2009 05:22 PM

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plantone
Veteran
Location: Rotorua New Zealand

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Hey guys ive now got 7 tanks of fuel thru the motor havent touch the needles from factory but i am now starting to see a vibration in the skids & rear vertical tail fin its only slight should i start to lean this out or wait until ive got 5 litres thru it to run in?? The main nedle is exactely as per book 1 3/4 H & 1 1/2 L the other strange thing is if i sit on the ground ticking over for a while & then throttle up it wont come on the pipe & the head speed drops from 1450 to about 1100 so i have to land & spool up slowely trying to get it on the pipe & then its away again. The pipe is the straight stainless zimmerman one from airstar. How lean can i go with this motor??

Cheers

Mongoose
trex500 in Airwolf body
trex600snp
trex700
Hirobo chinook
Compass Atom

11-09-2009 04:16 AM

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rbort
Elite Veteran
Location: Franklin, MA - U.S.A.

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You can lean it out some

With the extra oil for break-in you don't need to fun them filthy rich as they do for nitro motors during breakin. In fact with gas motors run them right on the needles and put extra oil for breakin is a better choice then run them rich as they vibrate more when rich.

You can close down the high and low by 1/8th turn and see what happens from there. 1 5/8 on high and 1 3/8 on low is still on the richer side of things in my books.

-=>Raja.

1005 Gasser, G26 3DMax++, 2205+ flights
Spectra-g, G26 3DMax, 870+ flights

11-09-2009 05:44 AM

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Gasser Model RC Helicopters > new to mongoose heli

Dr. Fibinotchi
Key Veteran
Location: Sioux Falls SD

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hmm

These are awsome machines for scale and ap. I miss my old one for how well it flew. Just soo smooth in the air.

-C

11-09-2009 02:54 PM

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Gasser Model RC Helicopters > new to mongoose heli

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