TQ motor recommendations

[Jabsher]

Hi all,

There's tons of motors available to outfit ones throttle quadrant.

I'm sure most of them will work fine, but I'm looking for personal recommendations from you guys on makes and models you recommend.

My biggest concerns are price and quality.  Also overheating after many hours of use is also a concern of mine.

I plan on using a chain drive that mounts under the center pedestal.

Thanks for your wisdom guys, I really appreciate it!

[FredK]

Check out the offerings at:

www.servocity.com

I have two 15 rpm 12v DC motors from them that drive my throttle levers on my converted real 737 TQ.  These motors have operated flawlessly for well over 3 years now.  They are well suited torque-wise to move the levers without straining or any overheating.  They are also relatively inexpensive.  You really do not need more than that.

I do intend to replace them with 6 rpm motors of the same type that I have just acquired (part #638210).  The reason is that the current motors respond too quickly to changes in thrust instruction.  This sometimes causes "hunting" since the levers sometimes outrun the rate change in thrust increase/decrease.  The slower response should correct all that.  You really want to lag the response in that regard.  All that is related to your selection of gear diameters in your setup of course.

I also have slip clutches installed on the sprocket drive (see photo).

See throttles in operation here:

https://www.youtube.com/watch?v=KPF-UHSOye0&t=28s

Fred K

[Jabsher]

Fred, thank you very much!  I would of completely goofed up on the RPMs, good to know!

That site it great, can't believe I've never come across it.  I've been doing most of my searches on McMaster.  ServoCity looks like it's better suited for my needs.

If you don't mind me pestering you some more....  I've been looking around for that slip clutch. Do you recall where you got it, or the type?

Are you using the same motor/slip clutch set up on your speed brake too?

Thanks again Fred,  I appreciate your input!

[jackpilot]

http://www.dynatect.com/mechanical-motion-control/slip-clutches/mechanical/slipper-clutch

[Garys]

Be quick 

http://www.ebay.com/itm/301982381677?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[Jabsher]

Awesome find, thanks!

[B747-400]

Hi Jabsher,

perhaps you've seen this article on another forum: http://aerowinx.com/board/index.php?topic=3906.msg40961#msg40961

I've also finished another update of my HP where you can see my approach of an A/T connection in a B 747-400 TQ.

Cheers
Hans

[Jabsher]

Hi Jabsher,

perhaps you've seen this article on another forum: http://aerowinx.com/board/index.php?topic=3906.msg40961#msg40961

I've also finished another update of my HP where you can see my approach of an A/T connection in a B 747-400 TQ.

Cheers
Hans

Hans,

Did you need to install a slip clutch when you installed the motor directly to the TQ?

I love the site by the way!  It's a great resource for someone like me!  I appreciate you taking the time to post your progress.

James

[B747-400]

Hi James,

I do not need an extra clutch - in the 747-400 TQ a so-called A/T Servomotor and Brake Assembly is installed. All 4 thrust levers are driven by one motor. Clutches are already there to allow manual and independent movement. You can see them on some of my pictures. Here for example: http://www.b747-400.net/gallery_tq_thrust/210.jpg

I like sharing information - this is a *very* vital part of our great community!! Together we are strong!

Cheers
Hans

[Jabsher]

Hi James,

I do not need an extra clutch - in the 747-400 TQ a so-called A/T Servomotor and Brake Assembly is installed. All 4 thrust levers are driven by one motor. Clutches are already there to allow manual and independent movement. You can see them on some of my pictures. Here for example: http://www.b747-400.net/gallery_tq_thrust/210.jpg



I like sharing information - this is a *very* vital part of our great community!! Together we are strong!

Cheers
Hans

Thanks Hans,

My throttle quadrant is scheduled to be delivered a week from today, trying to lay the groundwork for it now. I'm looking forward to this project.

Thanks again!

[B747-400]

Sounds good, have fun, James!

[Jabsher]

Ok, one more question for you Hans.  Hahaha sorry!  I was reading on your site you bought a motor that spins 2000 RPMs.  Is that at the motor spindle?  That seams really fast!  Is the TQ geared way down or something?   The motors I was looking at don't get nearly that fast! 

https://www.servocity.com/motors-actuators/gear-motors/standard-duty-gear-motors/precision-spur-gear-motors

[B747-400]

No problem, James!

It's a good question ... I added another picture and some description on my homepage. Yes, there is a gear ratio in the TQ gearbox assembly, which makes the 2000 rpm working fine for me!

Cheers
Hans

[Jabsher]

No problem, James!

It's a good question ... I added another picture and some description on my homepage. Yes, there is a gear ratio in the TQ gearbox assembly, which makes the 2000 rpm working fine for me!

Cheers
Hans

I see your update, that makes a lot of sense now! Thanks!