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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther › Weight reduction
04-25-2011 12:56 PM  10 years ago
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KopterKat

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New Jersey

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Weight reduction
I weighted my Spectra G's and they came in at a whooping 13.7 lbs dry weight. Now the manual says it can be 12 lbs if I use the stock muffler and air cleaner, but close to 14 lbs is crazy.

Anybody else coming up with these kind of weights.

FlipMode Squad
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04-25-2011 02:56 PM  10 years ago
Carey Shurley

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Orlando, FL - USA

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thats pretty heavy

what sorta battery?
generator?
what muffler?
what air cleaner?

I'm not doubting your finding I'm just curious whats the makeup?
Proprietor - Gas Powered Helicopters
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04-25-2011 03:03 PM  10 years ago
KopterKat

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New Jersey

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That's what I was thinking.

Fromeco 5200 LiIo flat pack
No generator
Century V2 Slim Torpedo
MA Carbon Fiber air cleaner

Now I'd be curious to see if I could reduce the weight by 15%.
Let me add that the model flies nice and smooth, but it doesn't move very fast

FlipMode Squad
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04-26-2011 03:51 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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Weight
Mine is 12.50 lbs complete but with no canopy with the Walmart scale that I just recently bought (thanks Rick for the link!)

It can be 13 lbs with a light Canomod one or as much as 13.5 depending on how much the canopy weights. The one I have is 11.7oz built by Bill Chancey with the mounting screws right at 12oz so mine checks in at 13 1/4 lbs dry ready to fly.

It is flybarless with the Helicommand HC3-SX unit.
It does have a generator.
Its using the zimmerman muffler which is 1.2oz heavier than the century torpedo (not much).
It does have the MA CF filter on it.

I'm not sure where the extra 1/2 pound is coming from on yours, could be the canopy and the flybar stuff my best guess.

-=>Raja.
MA 1005 Hanson 27 3DMax, 4516 flts
Spectra-G Hanson 27 3DMax, 3510 flts
Whiplash V1-2 Hanson 300, 2095 flts
Whiplash V2 Hanson 300, 1040 flts
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04-26-2011 04:06 PM  10 years ago
KopterKat

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New Jersey

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I don't know either Raja. However I am going to try to put it on a diet.

BTW both machines weight the same.

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04-26-2011 04:11 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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Servos
My friend that I fly with has smaller servos on his, Futabas not sure of the part number, but they are 3/4 length. I was looking at that yesterday with him. The wire doesn't get outside the frame so you don't have to worry about protecting it when coming back into the frames.

He said they are quite lighter as well than the full size servos, and you could possibly lose 2oz if you change those out I'm not sure of the exact figure. That along with a CF boom will give you a good 1/4 pound savings. I don't have either of that on mine.

-=>Raja.
MA 1005 Hanson 27 3DMax, 4516 flts
Spectra-G Hanson 27 3DMax, 3510 flts
Whiplash V1-2 Hanson 300, 2095 flts
Whiplash V2 Hanson 300, 1040 flts
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04-26-2011 05:08 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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For comparison Tom
I have someone else's Spectra here:

It has a flybar.
It does have a generator coupled with a 5000mah 2 cell lipo with a horizon Spectrum 6v regulator to the receiver.
Its using the century torpedo muffler.
It does have the MA CF filter on it.
It has the canomod canopy on it.

This one checks in at 13.72 lbs.

-=>Raja.
MA 1005 Hanson 27 3DMax, 4516 flts
Spectra-G Hanson 27 3DMax, 3510 flts
Whiplash V1-2 Hanson 300, 2095 flts
Whiplash V2 Hanson 300, 1040 flts
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04-26-2011 06:45 PM  10 years ago
oldfart

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Vancouver, Canada

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Here is the weight of my original Predator Gas SE (aluminum frame) with listed equipment without fuel.

Heli: 2005 Predator SE (Aluminum frame)
Engine: Zenoah G231 with stock air filter
Muffler: V1 Century Torpedo
Servos: 3 x S6252 and 1X S-9202 on throttle
Governor: GV-1 with Stator Gator
Gyro/servo: GY611/9256
On board battery/batteries: 4.8V 2400 NiCd
Blades: RT 720 FAI
Other equipment: RT 3D paddles (0.5 oz. lighter then stock) & specially painted canopy (heavier then stock)
Scale used to weigh the heli: postal shipping scale

WEIGHT without fuel: 12lbs 2oz.
Phil
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04-26-2011 06:46 PM  10 years ago
KopterKat

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New Jersey

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That sounds like what I got and I'm weighing mine the same you are with a digital luggage scale.
FlipMode Squad
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04-26-2011 08:07 PM  10 years ago
theriddick45

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United States

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Quote:
Mine is 12.50 lbs complete but with no canopy with the Walmart scale that I just recently bought (thanks Rick for the link!)

Raja... Your welcome!!! buddy is it handy?? You can take it with you any where plus it reads 4 different weights. I'm glad you like it pretty accurate ah!

Well just to add mine is 12.33 pounds ready to fly with fuel 12oz tank!

Suzi Janis 800e & 700e 3blade both w/Ikon
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04-26-2011 09:14 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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I like that!
You can take it with you any where
Plan to, so I can see what other models weigh at out of curiosity

-=>Raja.
MA 1005 Hanson 27 3DMax, 4516 flts
Spectra-G Hanson 27 3DMax, 3510 flts
Whiplash V1-2 Hanson 300, 2095 flts
Whiplash V2 Hanson 300, 1040 flts
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04-26-2011 10:45 PM  10 years ago
theriddick45

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United States

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Raja...

Did you know I took it to the field and my friend have a trex 700 electric and I ask him to let me weight his Heli and it weights 11.98 pounds fully load it ready to fly with all the batteries on? Pretty cool to know the weight of other helis but what really hit me was we gasser flyers are not that heavy!! I also took the weight of my trex 600 when it was nitro and it was 9.50 pounds crazy ah!!!

Just my 2 cents!
Suzi Janis 800e & 700e 3blade both w/Ikon
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04-26-2011 11:53 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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I agree!
In the past people used to ask me about gasser weight and stuff compared to nitros, and I used to say its about a pound and a 1/2 more than a nitro. I think that was a pretty good guesstimate and it all depends on the equipment used and such.

You also have to remember that they carry 20oz of fuel on board between the big nitro tank and the header, and while we do carry 16oz on board so we don't have to worry about running out of gas early, you could really just carry 10oz as that is all you need to fly for 10 minutes like they would with 20oz.

So by the time both models are gassed, the all up weight gap closes even further.

-=>Raja.
MA 1005 Hanson 27 3DMax, 4516 flts
Spectra-G Hanson 27 3DMax, 3510 flts
Whiplash V1-2 Hanson 300, 2095 flts
Whiplash V2 Hanson 300, 1040 flts
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04-27-2011 12:35 AM  10 years ago
James Kovach

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canton, oh - US

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I am finding this thread very interesting *disclaimer: These are my opinions. Agree or disagree, Your Call :)
Let'r Rip Tator Chip
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04-27-2011 08:09 AM  10 years ago
permagrin2010

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Surrey

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...Pretty cool to know the weight of other helis but what really hit me was we gasser flyers are not that heavy!! I also took the weight of my trex 600 when it was nitro and it was 9.50 pounds crazy ah!!!
Wow, at 9.5 pounds for the T600, that is not that much lighter then my slightly largr Radikal G20, which weighs in at 10.1 pounds.

Sparx, what are the weights of your gassers?
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04-27-2011 01:55 PM  10 years ago
James Kovach

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canton, oh - US

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Oh that just wouldn't be very fair or nice of me to share those numbers now would it?*disclaimer: These are my opinions. Agree or disagree, Your Call :)
Let'r Rip Tator Chip
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04-27-2011 03:23 PM  10 years ago
KopterKat

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New Jersey

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Why not? It is what it is. Unless your saying lighter is better. Your not making that judgment call are you?
FlipMode Squad
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04-27-2011 03:47 PM  10 years ago
Carey Shurley

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Orlando, FL - USA

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the problem with this exercise is that we're all just comparing the all up weight of the model we have sitting on the table. It doesn't account for apples to apples comparisons of the model details.

a belt drive model will usually weigh less than a tube drive model. some servos weigh less than others, as do batteries, electronics, mufflers, switches, regulators, etc. FBL heads usually weigh less than flybar heads. Velcro, fuel tubing, fuel tank size all add up.

I run a redundant battery pack that by itself weighs 12 oz. I run 40gm paddles. I run 210gm rotor blades. All that adds up which is fine unless you're trying to objectively compare that to a model running 18gm paddles, a 4oz battery and 180gm blades.

weight also doesn't account for functional differences. A 4oz fuel tank full of fuel weighs less than a 16oz tank with 4 oz of fuel in it. The difference - you can never put more than 4 oz of fuel in one of them.

if there is any point to this data, its going to be just a data point about a particular model.

I don't see it as an accurate point for trying to compare two different models unless the major aspects of them are the same and the configurable part weights are accounted for.
Proprietor - Gas Powered Helicopters
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04-27-2011 04:11 PM  10 years ago
jgoodsell

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Sherbrooke, Qc, Canada

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I run a redundant battery pack that by itself weighs 12 oz. I run 40gm paddles. I run 210gm rotor blades. All that adds up which is fine unless you're trying to objectively compare that to a model running 18gm paddles, a 4oz battery and 180gm blades.
Running such a setup means that you are aiming for safety and reliability versus performance and pure power...

so your AUW doesn't concern you...

Jeffrey
It seams that Gravity is worst around here !
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04-27-2011 04:27 PM  10 years ago
James Kovach

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canton, oh - US

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Why not? It is what it is. Unless your saying lighter is better. Your not making that judgment call are you?
Well, because I do not want to get pinked. So I guess I will just keep it to myself. And you are right, it is what it is. And I am pretty happy with what it is after seeing posts in this thread.

I am not sure about your other two statements. Lighter is better? I believe it is. Judgment call? I do not get that one?

Carey, I agree and disagree. If you want to compare someone else's to yours, then yes, you should compare it with someone's who is using close to the same equipment as you are.

Like in my case. KopterKat is running pretty much similar weight equipment in his Spectra G. So the differences in weight can mainly be attributed to the Airframe. Well, he is running a bigger battery.... But surely that will not make a 2+ pound difference in weight?
*disclaimer: These are my opinions. Agree or disagree, Your Call :)
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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther › Weight reduction
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