Mike SVOR

My Feedback: (1)

I would like to find a servo for a set of mechanical retracts that operates extremely slow.
Does anyone make one like this or is there a way to convert a standard servo to have extremely slow arm movement?

plaez halp

THanks,
Mike

Gringo Flyer

My Feedback: (18)

Is there a reason you dont just use a retract servo?

firstplaceaviator

My Feedback: (27)

You don't need a servo. You need a servo slower!

http://www.dionysusdesign.com/produc...products_id=41

http://www.bpesolutions.com/rcequip.html#anchor1600444

JohnW

My Feedback: (6)

Mid to high end transmitters can be set to slow servos, you might check to see if you can do this via your tx. A note: Retract servos are not proportional, so you'd need to use a fully proportional servo for the TX method to work.

Mike SVOR

My Feedback: (1)

thats awesome!!!
you're awesome!!!

Mike SVOR

My Feedback: (1)

I have a futaba 7CHP/PCM radio. So I don't know if it will. Don't remember seeing that function...... Do you know by chance? I think it's 'mid range' radio. (it cost me enough. lol)

firstplaceaviator

My Feedback: (27)

Thankyou[8D]

Futaba calls this function throttle delay. I don't remember seeing it in the 7CHP manual. I think it is only available on the 9C and up.[]

Gringo Flyer

My Feedback: (18)

You're right, its not on the 7C

JohnW

My Feedback: (6)

Actually it's not throttle delay, it is just delay, and is settable on any and all channels in several differnetly places, either directly on the servo channel, on the mix, or on the condition,. I don't know on the 7C, but I know first hand the 9ZAPs, 12DG, 12Z and 14MZ do it.

TLH101

My Feedback: (90)

9C and 7c don't have the slow feature, except on the throttle. A servo slow, will not work with a regular retract servo. Retract servos are not proportional so they cannot be slowed by any external source. You do not want to use a regular servo for retracts, because it is drawing power at either end of its travel. It's only idle at center. Airtronics makes, or used to make a 94739 proportional retract servo. Not sure of availabilty, though.

JoeAirPort

My Feedback: (41)

Says to not use them on digital servos or retract servos. Otherwise very cool.

Mike SVOR

My Feedback: (1)

Yep.

I don't see the need to ever buy a retract servo. It's not proportional so you can't adjust travel. Sounds like they'd be a pain to adjust the throws and end points with just cables or rods going to the gear.

But yea, I'm gona probably get that 10.00 dollar do-dad and call it a win.

I really appreciate the help guys.
Can't wait to start on my new HoB .20 Mustang P-51
Look for the build thread this week!


Mike

TLH101

My Feedback: (90)

You cannot use a regular servo for a retract operation. When the gear are in the up, or down position, the servo is drawing power from the battery. Just as your eleevator servo is drawing power at full up or down. The only time a regular (proportional, non retract) servo is not pulling power, is when it is at center.

Mike SVOR

My Feedback: (1)

http://www3.towerhobbies.com/cgi-bin...?&I=LXMJJ5&P=0
FEATURES: Positive Up and Down Locks
Tough Glass-Filled Nylon Construction
Light Weight - 2 oz. Pair
1/8" Tempered Steel Gear Legs
Mechanically Operated From Standard Servos


Not true.
They only require power to turn the servo's engine when the potentiometer says it needs to be in a place that it isn't currently or has a load on it.

If you put one on a landing gear, it goes up, locks and thats it. Goes down, locks, that's it. Unless you have the travel not set right.

JohnW

My Feedback: (6)

Agree... if set properly, you can use a standard proportional servo for mechanical retracts. The locks in the gear will keep the heavy load off the servo. If adjusted improperly of course the servo will draw a lot of current, any servo on any surface will draw a lot of current if configured poorly... don't do that.

TLH101

My Feedback: (90)

OK

YAT-28E

Ok so I put the reg servo in #3 and use the throttle delay which is perfect!! How do I get more throw on the servos to get clser to 180*? Can a 9 c do that??

Gray Beard

My Feedback: (-1)

[quote]ORIGINAL: Mike SVOR

Yep.

I don't see the need to ever buy a retract servo. It's not proportional so you can't adjust travel. Sounds like they'd be a pain to adjust the throws and end points with just cables or rods going to the gear.

But yea, I'm gona probably get that 10.00 dollar do-dad and call it a win.

I really appreciate the help guys.
Can't wait to start on my new HoB .20 Mustang P-51
Look for the build thread this week!
Borrow your neighbors 5 year old so there is someone with small enough hands to get it built. tghat is a very small plane. We used to have a racing class for it, that little plane is really a cooker.