Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

What servos?

Reply

Old 11-26-2002, 10:50 PM
  #1  
LawDog101
Member
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2002
Location: TX
Posts: 36
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default What servos?

What servos are you guys using in your DD and Whiplash?

Was thinking about those hs-225MG's like some of the pylon guys use but then again, digitals would be good too?

Thanks

James
Decatur, Texas
LawDog101 is offline  
Reply With Quote
Old 11-27-2002, 01:26 AM
  #2  
flyboy_1963
Junior Member
 
Join Date: Sep 2002
Location: Logan, Ut
Posts: 20
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Servo's

I'm using 8411's. I'd rather have more torque then needed. I haven't flown my Whiplash yet. I'm thinking about changing the hing's. I don't like how the elevon's are hinged on the top versus the middle. I'm getting a ton of servo chatter due to the hing is pulling the control surface up, so when the servo's want to return the elevon's to neutral, they have to work to keep them there. I'm also worried that my 800mah pack will not be enough due to the extra chatter from the servo's.
flyboy_1963 is offline  
Reply With Quote
Old 11-27-2002, 03:34 AM
  #3  
S3HD
Member
My Feedback: (1)
 
Join Date: Jan 2002
Location: Cincinnati, OH,
Posts: 75
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default What servos?

I just installed my elevon control horns and hooked up my servos on my Whiplash tonight.

I am using brand new Multiplex Royal mc/V2 servos. These are digital, dual ball bearing servos. They have over 100oz/in of holding torque at 5 degrees deflection, using a 6v battery.

My Whiplash elevons relax to a position of about 2 degrees up with nothing hooked to them. I noticed that one of these servos isn't happy having to hold force against the elevon in order to hold it in a neutral position. It is not chattering, but it is making a little noise with the elevons in the neutral position. The other servo is silent. I'm don't think the servos should make any noise when the elevons are in the neutral position.

I have sanded the top of the hinge line to remove most of the gelcoat on the advice of my paintman(40 years in the custom hot rod and auto restoration business). He said that we want to keep the coatings over the hinge line down to the bare minimum to prevent bad cracking of the finish, over a period of time. He's pretty sure that the finish is gonna crack eventually along the hinge line, but not very bad if we're careful on the prep.
I think that one elevon needs some more sanding along the hinge line to free it up. Then, perhaps it will be like its brother, and not require any force to stay in the neutral position - and hopefully this will quiet the servo.

When it is all done, I'm going to do some tests to see what kind of voltage drain is occuring on my Whiplash, and also to see how long a fully charged battery will stay above 6.0volts. With only a six ounce tank, and a Jett 50 FIRE, AAC, DF timed engine, I don't expect to fly very long flights. 3-4 minutes max.

Unfortunately, I'll have to wait til after Thanksgiving to get it finished. Of course it snowed today too. Don't think I'll be flying this baby til I can land on fairly dry grass.
S3HD is offline  
Reply With Quote
Old 11-27-2002, 05:52 AM
  #4  
flyboy_1963
Junior Member
 
Join Date: Sep 2002
Location: Logan, Ut
Posts: 20
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Hinges

Unfortunately, my Whiplash is already painted. I looks killer. I tried to post the pictures, but the file size was tooooo big. Any ideas on how I can reduce the file size so the pictures will transfer? I'm at the point where I'm going to cut off these darn hinges and rehinge the thing myself.

Good luck fixing your problem.

JJ
flyboy_1963 is offline  
Reply With Quote
Old 11-27-2002, 06:43 AM
  #5  
FlooredCOBRA
Senior Member
 
Join Date: Aug 2002
Location: Hampton, GA
Posts: 1,551
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default What servos?

flyboy_1963

if you want you can email it to me and I can resize it for you to post. I use ulead Iexpress to resize my pics to fit on here.
FlooredCOBRA is offline  
Reply With Quote
Old 11-27-2002, 06:46 AM
  #6  
FlooredCOBRA
Senior Member
 
Join Date: Aug 2002
Location: Hampton, GA
Posts: 1,551
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default What servos?

I tried standered servos at first with an OS 46 FX. they worked pretty good, no problems. But when I put in my GRRT they did not work to well. At WOT the servos did not have enough torque to make a turn or pull up. So I went to the I changed to high torques after that i was able to set for maximum throw.. works great
FlooredCOBRA is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service