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MTA Hobbies . Model Rectifier Corp . PowerHelis

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Gasser Model RC Helicopters > Tail Servo For XCell gasser
 
 
caiman
Heliman
Location: Monterrey México

I just bought an XCell-60 gasser, and it came with S9202 servos and a G501 (Rate Gyro, no HH) with a S9203 servo for the tail.

I decided to install a GY401 HH Gyro that I had instead of the G501. What I would like to know is if the S9254 servo (recomended servo for the GY401) has enough torque for handling this helicopter tail.

The S9254 is rated at 47 Oz/in and 0.06 Sec/60°. The S9203 is rated at 76.40 Oz/in and 0.11sec/60°. I also have a S9402 (89 Oz/in and 0.10sec) that I could use.

Could the GY401 handle the S9203 or the S9402 even at 6V (I know the S9254 would need a step down regulator to 5V)?

Should I keep one of the higher torque servos even though they are slower or would the S9254 work fine?

Do of you know the exact model of my helicopter? it is several years old and it just says X-Cell 60 and XL-Pro and XL-Graphite.

Thanks.

06-19-2008 01:43 AM
 
 
ka6fty
Senior Heliman
Location: Sacramento, Ca.

What you have there is a model 1005. They are a great heli.
Do a search on 1005 in the MA section, you will find alot of info.
That tail servo will be fine.

"Don't put your fingers where you won't put your face"
06-19-2008 01:58 AM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

I have flown the 9254 for years, but I have the 601/9251 combo on them all now,, there have been some post about the 9254 not lasting on the gas heli, but if you have it setup right, with out any binding, you will probley be ok,,

Yep,, Xcell 1005 Gas hei is what you have there,, there are some upgrades you will want to get,,
front pinion mod,
Push Pull on ele, and Collective,
Those are the most important that I can think of right now,, XGM/VGM

http://www.ronlund.com/images/plans...ransmission.jpg

John Crotts
www.soonerhelicamproductions.com
06-19-2008 02:06 AM
HOMEPAGE  
 
 
caiman
Heliman
Location: Monterrey México

XCell Gasser

Thank you very much for your replys.

I will make a search with that model number and see the cooments of other people using the S9254.

How could I check if my heli has the front pinio upgrade? why is it recommended?

Where could I download the complete instructions and parts manual?

Do you know if this heli came with an aluminum tail boom from the factory or did it came with a carbon boom?

Thanks.
06-19-2008 02:34 AM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

Check your other post, I posted them there,, but here you go..

http://rchelibase.com/xcell/

http://rchelibase.com/xcell/1005manual.pdf

http://www.ronlund.com/xcell_gas.htm

John Crotts
www.soonerhelicamproductions.com
06-19-2008 02:37 AM
HOMEPAGE  
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

Quote 
How could I check if my heli has the front pinio upgrade? why is it recommended?

It attaches to the lower main bearning block to keep the tail pinion from ruining the main gear, on a hard landing, it keeps the front pinion from flexing ,,,, it is gold in color, mostly, thats all I have seen the part # is 0832 http://www.ronlund.com/Merchant2/me...uct_Code=MA0832

http://www.ronlund.com/images/plans...ransmission.jpg

John Crotts
www.soonerhelicamproductions.com
06-19-2008 02:40 AM
HOMEPAGE  
 
 
caiman
Heliman
Location: Monterrey México

Pinion Upgrade

How long does it take to change it? How difficult is it? would I have to unassamble the frames?

About the S9254 Servo, for how long did you use it on your gasser without having any trouble? Do you think the GY401 response would be too slow if I use the S9203 or the S9402 instead of the S9254? I didn´t like the Gyro response with those two servos on a Raptor 50 but maybe since this is a more heavy machine they would work better, what do you think?

Thanks.
06-19-2008 04:00 AM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

The front pinion mod is pretty easy to do,, it will take some time, but you don't have to split the frames,, You will have to atleast loosen the main shaft so you can get the lower bearning block out, and take the main gear off,, but that about it,, As for the servo, You might try a 9252 servo for the tail,, I never had any problems with my 9254 servo, and flew it for a couple of years,, but the engine was smooth, and there was no binding at all on the push rod,,, XGM/VGM

John Crotts
www.soonerhelicamproductions.com
06-19-2008 04:13 AM
HOMEPAGE  
 
 
erichevy
Senior Heliman
Location: Zevenhoven The Netherlands

The 9254 is made specialy for the Gy401 gyro, and makes you're gyro work on its best.
I would not recomment flying without one.
I use this same set-up btw.

Eric.
06-20-2008 08:12 PM
 
 
shuttlepilot
Elite Veteran
Location: Mullins, South Carolina

I had a 9254 on my gasser, but it just didn't hold like I liked. It would blow out when I pulled up verticle and went to do a hard turn. I changed it to a hitec 6965HB and it works beautifully now. I agree that the 9254 doesn't have enough torque to do the job on a gasser. It's great for a 30 size, or even 50 size machine, but not on a gasser....IMHO.

Gas is Great
QWW Field Rep
06-20-2008 08:19 PM
 
 
erichevy
Senior Heliman
Location: Zevenhoven The Netherlands

Quote 
and went to do a hard turn
Don't blame everything on the gyro
I use the 401 9254 combo for years now, and I can break my M3 support bolt doing hard piroettes If i like with the Xcell.
The Futaba digital 9254 servo is specially made for this gyro, any other servo would be a compromise.
No hitec servo will "match" that.
06-20-2008 08:32 PM
 
 
shuttlepilot
Elite Veteran
Location: Mullins, South Carolina

To each their own. But a 12lb heli with a 46oz tail servo really doesn't make much sense.

Quote 
Don't blame everything on the gyro

Actually I wasn't blaming the gyro at all.

Gas is Great
QWW Field Rep
06-20-2008 08:41 PM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

shuttlepilot

I ran the 401/9254 for several years with out any problems, I think the key to this setup is having it setup right, and no binding at all on the tail rotor system, any binding at all will create heat in the servo, and then lead to failure,,,,

Eric, I think Billme has done some pretty extensive research with the Hitec 6965 servo with the 401 and he is having great results with it,, There are other servos that can be used with the 401, but your right about Futaba making the 9254 just for the 401.. I hope the helps clear things up... XGM/VGM

John Crotts
www.soonerhelicamproductions.com
06-20-2008 08:55 PM
HOMEPAGE  
 
 
erichevy
Senior Heliman
Location: Zevenhoven The Netherlands

you're right
change that into "servo"...
06-20-2008 08:56 PM
 
 
erichevy
Senior Heliman
Location: Zevenhoven The Netherlands

Hi John,
Wasn't it something like the 270Hz from the gyro, which works for the futaba servo?
I thought no other servo could "step-in" because of that.

Eric.
06-20-2008 09:01 PM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

Eric,, I'm not for sure about all the technology, but I know you can use other servos,,, and Bill is having great results in the testing, I think he has been using it for about 2 years now,, XGM/VGM

John Crotts
www.soonerhelicamproductions.com
06-20-2008 09:10 PM
HOMEPAGE  
 
 
shuttlepilot
Elite Veteran
Location: Mullins, South Carolina

The reason that I went with the 6965 is that I had read many posts of folks having good service with them combined with a 401. I've flown the 9254 on my gasser for 2 1/2 years and my setup is slick as eel snot. I just didn't like some of the characteristics of it.....especially in backward flight. I changed to the 6965 because someone on here was selling one un-used and it was a good deal. Now I don't have the blowout issues with backward flight and the tail wiggle when I pull the nose up hard and stop. This is a hobby, and everyone can do their "own thing" and that's not a problem. This is just what works for me and some others who have tried them out.

Gas is Great
QWW Field Rep
06-20-2008 09:10 PM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

Also the 401 has a switch so you can use a non digital servo too... XGM/VGM

John Crotts
www.soonerhelicamproductions.com
06-20-2008 09:11 PM
HOMEPAGE  
 
 
erichevy
Senior Heliman
Location: Zevenhoven The Netherlands

Alright,
I had no idea, there was an alternative servo instead of the 9254.
It's only that..... Hitec is my least favorite

Eric.
06-20-2008 09:19 PM
 
 
xcellgasman101
Elite Veteran
Location: WOODWARD, OKLA....

Quote 
my setup is slick as eel snot.

Now I'll bet that's slick!!! The key to any gyro/servo combo to work correctly,, is to have it setup right, and no binding to the tail rotor,, push rod, smooth, and the bellcrank smooth, and the tail slider smooth,, if you have all this,, almost all the gyro's on the market today will work pretty good,,

shuttlepilot,, I can see where the 9254 will blow out durning fast backwards flight,, as I have had this happen to me in the past, just not all the time,, Mostly during tail first death sprials,,, Now this can be allot of fun when it happens about 10' off the deck... XGM/VGM

John Crotts
www.soonerhelicamproductions.com
06-20-2008 09:19 PM
HOMEPAGE  
 
 
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Gasser Model RC Helicopters > Tail Servo For XCell gasser
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