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HomeAircraftHelicopterGasser Model RC HelicoptersOther › Spectra G first flight
04-05-2009 02:31 AM  9 years agoPost 1
rccarguy

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Boston MA

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Not the actual first flight for the heli, but the first time I've flown it to be clear about it. Forecast called for winds 10 - 18 mph with gusts up into the 20's, measured windspeed at the house was practically nil around 9:00 AM and it wasn't raining for a change, so it looked like it might be a good window of opportunity.

Took the Spectra and the Fury 60 so I could do a back to back comparison since they use essentially the same mechanics, this would be my first time flying a gasser. Got to the field to find it was a fair bit windier than at the house, but windspeed at ground level wasn't registering much over 3 mph, so it was go for liftoff.

Spool up and liftoff, other than the odd sounds the engine produces it wasn't really any different than the Fury, but once it got up into the somewhat breezier air above there was a noticeable difference. Spectra doesn't get battered around as badly as the Fury, but I did find collective management is A LOT more important on the bulkier G. Drop the collective a tad too much and this thing falls like a brick! And while that was a bit of a wakeup, the fact that it doesn't recover quite as quickly as a lighter nitro got my attention even more

On the other hand it's easier to see, no haze of exhaust smoke obscuring the view of the heli

Climbing back to a safer altitude I also figured out that the gyro was in rate mode, so the first minute or two of actual flight was a little on the exciting side! Right about then I noticed something fall away from the heli and looking closer I could see the canopy appeared to vibrating more than it should. Landed to check it out and found there are now only 3 canopy nuts, borrowed one from the Fury to replace the now lost one and went back up.

About 8 minutes in I was starting to feel a lot more comfortable with the flight chracteristics and did a few tight banks and fast figure 8's. Getting windier still and the gusts were coming from all directions making it a real challenge on top of having an unfamiliar heli flying on the other end of an unfamiliar radio, decided that was enough for the moment and landed before things got out of hand.

Flew the Fury next and found the lighter heli was really getting tossed around in the ever changing winds, flew pretty much the same as I did with the Spectra just to see the difference and called it quits at about half a tank, wind gusts were bending the tops of the trees at the edges of the field, conditions weren't getting any better as time passed.

Wasn't an ideal day for it, but I'm happy I got some flight time in. I did put the Spectra up twice more until the tank was almost empty, by then light rain showers started to pass through, time to call it a day.

Things that need attention, canopy mounts, should not have lost that screw. I made sure they were snug before flying, apparently not snug enough. Engine is not tuned well, definitely running rich at idle speeds and probably also at higher rpms. The seller did say it was still set a bit rich for break-in, so I'll work on that next time out. Logictech 6100 gyro, I'm not at all impressed with it, tail feels almost numb and it has a tendency to drift to the right in HH mode, maybe I'll swap it for the JR 770 on the Raptor 50 and see how that works. Futaba 10C, what a porky thing that is, my DX7 feels like it weights nothing after having the Futaba in my hands. I'm up in the air on the Futaba, I'm going to give it some time and see how I feel about it after a few flights, if I find I still don't like it then I'll consider swapping out the Futaba and setting it up on the DX7.

Overall impression, I love it! I think the nitro helis are going to see a lot less flight time this season. One that may see a bit more for a short while is the Raptor 30 while I practice better collective management, seems to me the G and R30 are quite similar in that regard. It will take a few tanks to get comfortable with the Spectra but I can already tell this one is a keeper

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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04-05-2009 02:47 AM  9 years agoPost 2
bosshoss

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Chicago, IL

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Congrats on the first Spectra flights.

Yes, the G is a great windy day flyer. I have been flyin' mine is all blustery conditions here in Chicago.

I flew in 22mph to 31 gust this past week, and it was a blast.

THe collective management takes getting used to, thinking well ahead of it. I prefer this machine to all my other helis now. It is just going to be #1, that is all there is to it.

Why Hover a Yak, when a Heli does it better?

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04-05-2009 02:53 AM  9 years agoPost 3
predatorman

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Falkland Islands

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Well!!! let me be the first to congratulate you beat the rest of them to it

Interesting about the collective response, you will find that as the heli is heavier even with loads of power there, you will suffer that bit more with 'vortex ring state' in the lighter winds its very noticable if you are hovering about and doing slow circuits...descending with the breeze is very noticable.

Well done, take it easy and keep an eye out for anything else loosening up.

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

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04-05-2009 02:58 AM  9 years agoPost 4
predatorman

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Falkland Islands

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Arghhh!! beaten to it!!!

Yes, you will find that your gasser will cope with some high winds. I think mine performs well in a good strong breeze. I have flown in near gale force conditions where she has been thrown around like a little 30 size....quite good fun

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

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04-05-2009 03:37 AM  9 years agoPost 5
TaleGunner

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Deer Park WA

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Congrats have any pictures of it

I just finished off my second gallon with mine today. set the gov to 1650 HS leaned it down and thought it was coming apart, it sounds awesome and the power is starting to come in. Going to try some 3D with it tomorrow. Im hooked

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-05-2009 04:09 AM  9 years agoPost 6
litespeed600

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St. Charles, Missouri

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I haven't flown a Spectra yet, I have the "Much better for 3D Predator" (from the other post!) and this porky thing handles some wind. I had my eRaptor 550 out today at the field flying in 25 mph constant with gust to 34 mph and it does great. In my opinion I haven't flown in wind that could take the Predator down. Amazing what high headspeed will do to combat wind.

On the Logictech gyro mine had some drift also on my Predator. I found out it was the radio and gyro don't see the same center. Go to the menu (I'm not familar with the Futaba radio, I have JR.) and go to "sub trim" and adjust up or down in steps of ones till it goes away. I actually found this out myself because mine would drift while on the bench. The servo would slowly rotate until I added 6 steps of left rudder so it actually showed the 6100 center signal. It holds rock solid now, tail slides won't phase it. I was about to stomp on it before....try it I think you will like it.

BTW it seems to be pretty vibration proof with the Zeal green gyro sticky stuff.

Tom

Married with 2 kids, I am no stranger to pain!

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04-05-2009 06:53 AM  9 years agoPost 7
Excalibur

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Destination: Earth

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I noticed something fall away from the heli and looking closer I could see the canopy appeared to vibrating more than it should. Landed to check it out and found there are now only 3 canopy nuts, borrowed one from the Fury to replace the now lost one and went back up.
Here's a link to a thread that may help you with that problem:

http://www.runryder.com/t495830p1/

Xcal

Camper Fuel: It's Not Just for Breakfast Anymore

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04-05-2009 11:11 PM  9 years agoPost 8
rccarguy

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Boston MA

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Thanks to litespeed600 for the gyro tips, I'll be sure to try them out next time I get to the field.

Xcal, I like the canopy mount idea, I'll take a look at doing something similar, at least get the back mounts setup for the next flight.
Congrats have any pictures of it
Just took some out back...

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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04-05-2009 11:57 PM  9 years agoPost 9
TaleGunner

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Deer Park WA

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Nice pics

What pipe/muffler is that?

I just sent my V3 back to Century they are sending me a V4 to replace it. The v3 had little pin holes in it.

Here are a few of mine just started my 3rd gallon in her yesterday
I am in aww of how well this heavy bird flies with the 3D max in it.

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-07-2009 01:11 AM  9 years agoPost 10
Justin Stuart (RIP)

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Plano, Texas

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So do the canopy screws need a dab of blue locktite each time to keep them in place?

RCCarguy, did you do any break-in on your motor before this maiden flight?

Avant RC
Scorpion Power Systems
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04-07-2009 01:15 AM  9 years agoPost 11
TaleGunner

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Deer Park WA

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If you have the rubber grommets in no loctite needed

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-07-2009 01:19 AM  9 years agoPost 12
Justin Stuart (RIP)

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Plano, Texas

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As for the rubber grommets, are you cutting a hole in the canopy big enough that the "lips" of the grommets mount on either side of the fiberglass? This would be an approximately 6mm diameter hole? Or are you just drilling a 3mm hole through the fiberglass, just big enough for the screws to fit through?

Also, the canopy mounts in my kit look nothing like the ones in the manual. I assume the larger round silver ones go up front, and the smaller black hexagonal ones go on the back?

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04-07-2009 01:35 AM  9 years agoPost 13
TaleGunner

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Deer Park WA

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mine were all black just like the Ion X2 mounts

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-07-2009 01:38 AM  9 years agoPost 14
Justin Stuart (RIP)

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Plano, Texas

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Looking in your gallery Talegunner, you have the silver mounts up front and the black ones in back, just like I thought.

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04-07-2009 01:39 AM  9 years agoPost 15
rccarguy

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Boston MA

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What pipe/muffler is that?
Hatori, that's as much as I know about it...
RCCarguy, did you do any break-in on your motor before this maiden flight?
Heli already had around a dozen flights on it when I got it, previous owner said that the carb was set on the rich side for breakin. My flights last weekend show that to be true, it's running rich and needs to be tuned, on the to-do list...

Mine had the large silver screws in all four (now three) canopy mount positions. Since I lost one, for the time being I'm going to replace two of them with the plastic head screws similar to what my Fury has. When I have some spare time I might make a new pair on the lathe out of 6061 aluminum and a couple 3.5 mm cap screws

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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04-07-2009 02:03 AM  9 years agoPost 16
TaleGunner

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Deer Park WA

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Looking in your gallery Talegunner, you have the silver mounts up front and the black ones in back, just like I thought.
must be an optical illusion they are all black on both the spectra and Ion X2

EDIT Maybe I miss understood the rubber grommets are black but the thumb screws are silver is that what you meant?

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-07-2009 02:07 AM  9 years agoPost 17
Excalibur

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Destination: Earth

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As for the rubber grommets, are you cutting a hole in the canopy big enough that the "lips" of the grommets mount on either side of the fiberglass? This would be an approximately 6mm diameter hole? Or are you just drilling a 3mm hole through the fiberglass, just big enough for the screws to fit through?
You want to drill the holes in the canopy the exact size of the center section section (between the lips) of the grommets. Any bigger and the grommets will fall out. Any smaller and it will be almost impossible to install them without tearing, and if you do the screw posts may not fit through them.

As I have posted before, a better option is to modify the mounts to work like the Predator canopy mounts. Just do a search for "Spectra-G Front Mounted Canopy for details.

Xcal

Oops, I see you already did. . .

Camper Fuel: It's Not Just for Breakfast Anymore

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04-07-2009 02:39 AM  9 years agoPost 18
Justin Stuart (RIP)

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Plano, Texas

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X-cal, you think this mounting technique (with the ball links) is really best? Has anyone else tried this? Also, where did you get the second servo plate for your throttle servo?

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04-07-2009 02:51 AM  9 years agoPost 19
Excalibur

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Destination: Earth

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X-cal, you think this mounting technique (with the ball links) is really best? Has anyone else tried this?
Absolutely. All I'm doing is duplicating the system used on the Predator Gasser. I owned one of these before the Spectra-G and it works flawlessly. I wish I could let you tug on it and check it out in real-time.

The only thing that is critical is the hole size you put in the canopy for the grommets. You need to start just barely too small and test it, then gently file out the circumference and test-fit again for snugness. You'll know when it feels right.
Also, where did you get the second servo plate for your throttle servo?
I think I ordered it from Ron's Heliproz South, or Minair directly. Sand the mating surfaces of the two plates and epoxy them together with JB Weld. Really enhances the stiffness of the throttle servo mount.

Xcal

Camper Fuel: It's Not Just for Breakfast Anymore

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04-07-2009 01:48 PM  9 years agoPost 20
predatorman

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Falkland Islands

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The standard Predator grommets are not great. I replaced mine with some spares for a Sceadu. These are a harder compound and last well. The holes have to be opened out a little thats all.

I lost one of the original mounting screws in flight. I made another set up using capscrews, locknuts and small servo wheels

Screw the cap screws through the servo wheel centers, the locknut is installed within the servo wheel centers...inside the recess. The screw will thread through this....tighten up and there you have them....they look alright too.

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

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