RCU Forums - Boost Tabs

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Re: more boost tabs

Quote:

Originally posted by bentwings
Hey aerografixs,
That's a pretty interesting tab setup. A while back I did an 80" Cap for a guy with 2 Jr 4131 (90 oz ea) on the rudder. He claimed it was marginal at best. I would say the claim vs. skill might be questioned. Actually it was more pain than anything as it was constantly buzzing and very difficult to keep both servos from fighting each other. Not to mention radio programming.
If you are only using a 40 oz servo plus boost tab....that's great. Just saved about $75 in servo cost + 3/4 the cost of the second and ??? $$$$ in labor and pain setting up. From the picture it looks pretty tough too. Nice job. The neat thing is that you always have "power" assist like power steering as long as there is air flow over the surface. more or less proportional....more air flow more power assist. Even with no air flow the 40 oz can move the surface easily. Utopia!!!
As I was saying earlier, on larger planes it is much more effective than smaller planes. Likewise on larger surfaces it is more effective. Also the farther away from the hinge line the better too..as is your system.
Let me know how it performs.
By the way I checked out your web site listed. You got some very interesting stuuf there I like the fiber optic cables. As J.O. noted these have been in industry for years. I use them all the time just like wire in our machine control sensors. I'm about ready to start another large war bird so I'll be interested in using some of these. RC has needed this for a long time.

more later
bentwings

Thanks for your comments on the Boost Tabs.

As for the Fiber Optics, I developed these about 15 years ago for a specific project using model radio system on a grand scale, but that's another story.
I doubled the sales every year since I resorected this project about 3 years ago, but you must understand that people are funny, they continuously oppose change. And these extensions are not only an evolution of standard extensions, but rather a radical departure. So they resist. But that's OK, I use them and now a lot of people with the gas engines are starting to enjoy there benefits, also the Jet comunity are starting to find out about these.

Everything you saw on my web site, are things are developed for my use and only after I was completely pleased and figured some other people might like it that I offer it.

Here is the rudder/boost tab installed.

The Boost Tab push rod is .080" aluminum threaded 2*56 at both ends and using nylon 1/2A clevises and control horn, to keep the weith down. Don't forget these tiny conrol system is only controling very small control surfaces, smaller then a lot of 1/2A aircrafts.

Quote:

Originally posted by aerografixs
Here is the rudder/boost tab installed.

The Boost Tab push rod is .080" aluminum threaded 2*56 at both ends and using nylon 1/2A clevises and control horn, to keep the weith down.

Roger,

Where can I get the threaded aluminum rods?

BTW this is very cool. I will have to do this on my next big airplane.

Andy

Quote:

Originally posted by AndyF

Roger,

Where can I get the threaded aluminum rods?

BTW this is very cool. I will have to do this on my next big airplane.

Andy

Thanks Andy,
I make my own threaded aluminum rods, that is thread at both ends.

I know again ;)

Hi Roger,

Is the rod something that is readily available? I have the die to cut the 2-56 threads. Where would I get them? Do you think a hardware store would have them?

Thanks,

Andy

Quote:

Originally posted by AndyF
Hi Roger,

Is the rod something that is readily available? I have the die to cut the 2-56 threads. Where would I get them? Do you think a hardware store would have them?

Thanks,

Andy

I pick it up at my local welding shop, they are aluminum welding rods. Not expensive.

Thanks Roger, I'll do that.

Andy

Quote:

Originally posted by AndyF
Thanks Roger, I'll do that.

Andy

Let me know, if you have problems finding some, I can send you a few pieces.

Thank you Roger. We have a local Ace Hardware store that carrys a pretty large assortment of welding rods. I plan on going there this afternoon. I'll let you know how I make out.

Andy

Hey, I finally got that web site. Good stuff. I saved it into my HD, so I can be sure to get to it when I need it. Thanks