DA 100 Throttle Arm
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DA 100 Throttle Arm
I know the DA 100 is pre-tapped for 2-56 but I really would like to use a 4-40 ball link. Can someone tell me what I would need to re-tap the throttle arm for a 4-40 bolt?
Thanks in advance,
Keith
Thanks in advance,
Keith
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RE: DA 100 Throttle Arm
That would be a drill bit it and a 4-40 tap...
ORIGINAL: Harleyflyer
I know the DA 100 is pre-tapped for 2-56 but I really would like to use a 4-40 ball link. Can someone tell me what I would need to re-tap the throttle arm for a 4-40 bolt?
Thanks in advance,
Keith
I know the DA 100 is pre-tapped for 2-56 but I really would like to use a 4-40 ball link. Can someone tell me what I would need to re-tap the throttle arm for a 4-40 bolt?
Thanks in advance,
Keith
#3
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RE: DA 100 Throttle Arm
Yep and you can get the drill size at the hardware store when you go to get the tap. I'm not sure what size it is. Get a 2-56 drill and tap set as well as long as you're there. They are both useful. By the way, 4-40 is totally unecessary for the throttle. 2-56 is more than adequate.
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RE: DA 100 Throttle Arm
ORIGINAL: JoeAirPort
Yep and you can get the drill size at the hardware store when you go to get the tap. I'm not sure what size it is. Get a 2-56 drill and tap set as well as long as you're there. They are both useful. By the way, 4-40 is totally unecessary for the throttle. 2-56 is more than adequate.
Yep and you can get the drill size at the hardware store when you go to get the tap. I'm not sure what size it is. Get a 2-56 drill and tap set as well as long as you're there. They are both useful. By the way, 4-40 is totally unecessary for the throttle. 2-56 is more than adequate.
Agreed - 2-56 has been fine on my DA-100. Just don't forget the locktite.
BTW - if you go to the gardware store for a 4-40 tap, they usually come with a bit.
Speaking of taps - here's a handy tool to have...
http://www.sears.com/shc/s/p_10153_1...0P?keyword=tap
sorry - sears didn't put a pic up, but it is basically a nice craftsman screwdriver with a bit holding handle (like the magnetic tip screwdrivers) where you can store taps that can be put in the chuck on the end of the screwdriver. Just add a 4-40 and 2-56 to the handle and it's complete! I use mine constantly - highly recommended.
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RE: DA 100 Throttle Arm
I tapped mine for 4-40.
On a 35% I don't believe anything could/should be 2-56.
Took 20 seconds and now I have a full 4-40 throttle linkage setup with monster ball links..
#6
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RE: DA 100 Throttle Arm
Throttle is throttle, regardless of the plane size, a carburetor butterfly should not be hard in any way for a servo to push or pull. If it is you have serious problems. We are using 4-40 linkages on huge 3D size elevators with 300+ oz/in servos - I don't think a throttle arm is seeing the torque to justify a 4-40 size, but if it makes you feel better go for it.
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RE: DA 100 Throttle Arm
Okay guys...you have convinced me to stay with 2-56.
Thanks for the information on tapping though...I am sure it will come in handy in the future.
Keith
Thanks for the information on tapping though...I am sure it will come in handy in the future.
Keith