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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › Spartan on nitro : metal plate or not?
03-12-2010 09:34 PM  8 years agoPost 1
n808

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Seattle, WA - USA

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I've had a Spartan DS760 for a while now, but when I first got one for my 600N, and installed it with the recommended 3mm foam + metal plate + 1mm foam, the tail would drift, with a mushy feeling, and not holding well. Due to the thick foam and heavy metal plate I have a feeling the gyro is simply too loose and not following the heli's movement. Since then I've been using only the 3mm foam pad with much better success.

Recently I got a Quark to replace a GY401 on another nitro and I figured I should try the recommended installation once more. But again I get the same problems - mostly improved on the field by strapping it down with a velcro, but that's not recommended in the manual either, so when the weather improves, I'll go back to 3mm foam only.

What is your experience, metal plate or not?

Is there another problem with my helis I should solve before installing the Spartans without the metal plate on top of 3mm foam?

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03-13-2010 12:19 AM  8 years agoPost 2
Ironhide

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dexter mi us

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I run mine on a RJX 50 with a metal plate and I split the wires for about an inch so its not just one big tether . Seemed to help my setup . Oh I also run a piece of zeal tape cut into 4 small squares with about an 1/8" in between . I have tried everything to get the gain as high as possible .

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03-13-2010 12:49 AM  8 years agoPost 3
cdrking

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Seattle

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I've been using a Spartan for some time now on both nitro and electric. On my nitro I use one thin and one thick piece of foam with the plate. I also use velcro and use that as my final adjustment for the gyro. If it's to loose then it will overshoot and basically act like it's not holding well. If it's too tight it will drift if you have vibs.

Velcro works and it's a great safety tool in case the foam fails.

Jeff

To hover is divine, the alternative is rather PLANE.

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03-13-2010 12:52 AM  8 years agoPost 4
Ironhide

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dexter mi us

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cdrking
Can we get a pic ? I'm very intersted in your velcro setup .

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03-13-2010 12:57 AM  8 years agoPost 5
cdrking

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Seattle

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Not sure if I have one. My machine is COMPLETELY torn apart for a winter rebuild. I will search my pics and see if I can find one. Not anything new, just a piece of velcro around a gyro. This is/was on one of my N9's.

I also put a piece of velcro on the top of the gyro, this way the velcro will stick a little on top to prevent the velcro from slipping off the top. It's mainly there to prevent the gyro from falling off if the foam fails completely.

Jeff

To hover is divine, the alternative is rather PLANE.

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03-13-2010 01:13 AM  8 years agoPost 6
Ironhide

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dexter mi us

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Got ya , I do that to . I thought you were using it under as padding or something . thanks

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03-13-2010 02:39 AM  8 years agoPost 7
n808

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Seattle, WA - USA

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Jeff, that sounds reasonable. It's just that strapping it back down with velcro goes against the manual's advice of not doing anything to make the gyro more attached to the heli, i.e. leaving 2 inches of wire free and don't even use wire braids. I guess there is enough flexibility in the straps to provide the needed adjustment and balance between too loose and too tight. Also, the added velcro on top was a good tip, since without it, you have to tie it down pretty well to avoid the strap sliding off to the side.

Karl.

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03-13-2010 02:49 AM  8 years agoPost 8
Zaneman007

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Texas - USA

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Great gyro selection.

I use zeal tape. It works great.

Old Guys Rule!

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03-18-2010 05:55 PM  8 years agoPost 9
rowland

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Chiayi, Taiwan

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Hi n808
I had the same problem.
I've had Spartan DS760 on TT E325 with 3mm foam, it works very well.
I got a Quark on my gasser heli, installed with 3mm foam + metal plate + 3mm foam, the tail would drift clockwise.
I changed with 3mm foam + metal plate + 1mm foam, the tail still drift clockwise but better.
Now I just use 2mm foam only, the tail lock very well.

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03-18-2010 06:35 PM  8 years agoPost 10
Zaneman007

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Texas - USA

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I leave the metal plate on. It gives the gyro the proper mass.

Zeal tape works very well in high vibration situations.

Old Guys Rule!

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03-18-2010 06:40 PM  8 years agoPost 11
n808

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Seattle, WA - USA

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Well, after reading the advice in this thread I actually re-installed the metal plate on one of my helis (the Knight3D). It made a big improvement. I was able to increase gain for a better tail lock without getting any wag. I used a little velcro on top to be able to adjust the strap tension without any chance of the strap sliding off.

After that I re-installed the plate on my two other nitro helis, using the same method, but haven't tested or adjusted them yet.

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03-20-2010 01:42 AM  8 years agoPost 12
barely can fly

rrApprentice

oxford ga. usa

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I had tail drift and wag problems with several different gyros on my 600, when i first installed spartan 760 with the recommended setup i could not get rid of the drift problem.

I have since mounted my spartan to 600 gyro mount only using the thinnest piece of tape that comes with it, no plate or second foam and the tail holds like crazy, the tail is good enough that even in 15 mph plus wind gusts the tail does not move at all.

Also my ball link is set at 13 mm out and gain set at 70 on my 9303, this is the best performing tail i have ever flown.

Also set a friends align 750 up the same way and all of his drift and engine related wag disappeared.

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03-20-2010 07:55 PM  8 years agoPost 13
Gravitysucks

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San Diego, CA

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Use the plate, but increase the gain! It's most likely a gain problem.

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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › Spartan on nitro : metal plate or not?
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