Hip Pocket Builders' Forum

Outdoor Free Flight Forum => Power => Topic started by: ScienceGuy on September 07, 2018, 04:54:05 PM



Title: Witch Hawk Repair & RDT
Post by: ScienceGuy on September 07, 2018, 04:54:05 PM
I was reading an exchange on Facebook recently that started out with someone giving a negative opinion of the use of Remote DT in free flight competition. This is not the first time I have heard comments like this and I can understand why people feel that way. Some people didn’t even like the idea of trackers but I think for the majority of the free flight population trackers are essential equipment.

The longer I fly free flight airplanes the more I appreciate the challenge of making a model airplane fly with no control from the ground. It can be a lot harder than it looks to get a model adjusted to fly consistently without control. At times it is frustrating not to be able to save the model from a spiral into the ground that results in more repairs. The rational for not liking RDT was the model was not truly flying free if you could bring it down at will; they also liked the thrill of the complete chase of the model. Another comment that came up was a dislike for auto surfaces, something I doubt I will get to that level in model complexity to use.

In my Witch Hawk 500 that broke the wing in half at 2018 Nats I am installing RC for DT and to cut the engine. When I feel the plane is trimmed I will attach an electronic timer to the engine cut off servo. The largest field I fly from in local area is 44 acres and the field has trees and powerline around the edges. Flying at the Minnesota contest field there are trees on one side that I really want to stay out of.

I was checking on eBay for mechanical timers and did not see a single Texas Timers timer, really not much of anything. Also looking for a Cox TeeDee .020 and have gotten my bid up way higher than I wanted too.

Last evening I did fly the Dewey Bird ½ A control line model. I made a really crude stooge to release it with but it worked okay. The lines I had .012 were too heavy and maybe too long at 35’, tension was not great but then it is a small model. With my free flight experience I am getting more concerned with details, finding out the hard way details matter.

http://scienceguyorg.blogspot.com/2018/09/i-was-reading-exchange-on-facebook.html (http://scienceguyorg.blogspot.com/2018/09/i-was-reading-exchange-on-facebook.html)   Blog version with pictures


Title: Re: Witch Hawk Repair & RDT
Post by: flydean1 on September 07, 2018, 08:06:34 PM
Ignore those idiots.  You make a good argument for RDT.  I get very little building time so any way I can prevent a crash I would do it.  An RDT system for testing is in my future.

I will not even hand glide a model without a tracker, and without the DT timer running.  OK my CLG's don't have trackers, but the DT is working.

Don't bother with flea bay for Texas Timers.  They are so good, the only time they show up for auction is when they are trashed.  It takes a lot to trash them.  Buy them direct from Texas Timers.  Don't bother with KSB or Tatones.


Title: Re: Witch Hawk Repair & RDT
Post by: ScienceGuy on September 07, 2018, 08:46:38 PM
No new Texas Timers are being made and very limited to what Hank has left.

I guess there are foreign timers still being made you can but through UK.




Title: Re: Witch Hawk Repair & RDT
Post by: raggedflyer on September 08, 2018, 11:01:39 AM

Have a look here if you’ve not visited before.

Excellent former professional engineer making quality products.

http://www.forge-electronics.co.uk/index.php/aircraft


Title: Re: Witch Hawk Repair & RDT
Post by: ScienceGuy on September 08, 2018, 11:25:28 AM
This might be just what I am looking for. Would be nice if distributors in US but I have ordered from UK in the past.

Bill Kuhl


Title: Re: Witch Hawk Repair & RDT
Post by: flydean1 on September 08, 2018, 01:15:49 PM
Stevens Aeromodel in Colorado is US distributor.  He has 2-function electric timers and others.


Title: Re: Witch Hawk Repair & RDT
Post by: ScienceGuy on September 08, 2018, 01:23:01 PM
I will check it out, I have purchased there before.


Bill


Title: Re: Witch Hawk Repair & RDT
Post by: raggedflyer on September 08, 2018, 02:40:19 PM
Have a look at page 8 of the E36 Timer Instructions for useful information on RDT

http://www.forge-electronics.co.uk/images/aircraft/e36mk2.pdf

Stockist are listed in the Vendors section of the main site