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Old Sep 19, 2012, 05:18 PM
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United States, MI, Rochester Hills
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Originally Posted by Pressred View Post
I think this is called "sticktion" and while it never really bothered me on planes i found it really frustrating while trying to land a heli. Silicone grease worked for a while but it always came back. What I did to cure it was to rotate the dual spring strip 180 degrees so the ratchet strip is pressing on the smooth surface of the gimbal, you also have to swap locations of the 2 long and 2 short retaining screws, it gives it a much smaller contact area.
Smear on a small amount of servo grease et voila smooth as a babies bum,
don't forget to tension it before putting Tx back together as you can no longer adjust it through the access hole
Yes, it is called sticktion... I called it stickyness because I wasn't sure of the correct spelling for "sticktion"

I opened my radio and looked at the throttle gimbal mechanism. Your idea of using the ratchet side instead of the smooth side seemed logical but I did it slightly differently.

First, I simply moved the entire ratchet spring stamping one hole over, so the detent portion was on the smooth surface and the smooth portion was hanging in mid air. It worked OK but would not let me switch from smooth to ratchet without opening the radio. In the end, I re-bent the smooth portion to emulate the detent portion. Because I was just using a pair of needle nose pliers, the bend radius is somewhat larger than the factory version. I then mounted it in the normal position. Works great and the ratchet and smooth functions can still be adjusted without opening the radio.

Sorry Spektrum, but I still feel that having to peel back single use double sided tape to open the radio is just..... lame

Paul
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Old Sep 19, 2012, 07:41 PM
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Central California
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Paul
If your careful and dont contaminate the the stickum on the grips with dust bunnies,fingertips or dirt it actually holds up for quite a few cycles.
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Old Sep 19, 2012, 08:23 PM
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Originally Posted by aerocal View Post
Paul
If your careful and dont contaminate the the stickum on the grips with dust bunnies,fingertips or dirt it actually holds up for quite a few cycles.
Yeah, so far it is relatively OK after two cycles. And I do have some carpet tape that can probably sub for the factory tape if needed. Still think its lame, though

Paul
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Old Sep 19, 2012, 08:36 PM
ancora imparo
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Melbourne, Australia
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Mine's been apart at least 8 times and the original tape is fine. The rubber pins do the location and hold the edges, the tape is really only to stop it sliding around.

It's a perfectly sensible solution IMO for the purpose since most folks will only ever open the Tx once, if at all. It's hard to think of a better way to securely mount rubber as though it was permanent but still allow the occasional disassembly. And it is dead easy to replace with the thin double sided tape that craft stores sell for scrapbooking. I wouldn't use carpet tape. It's too thick and very hard to take off again.

Just my 2c worth.

Quote:
Originally Posted by pgoelz View Post
Yeah, so far it is relatively OK after two cycles. And I do have some carpet tape that can probably sub for the factory tape if needed. Still think its lame, though

Paul
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Old Sep 20, 2012, 04:03 AM
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Originally Posted by jj604 View Post
It's a perfectly sensible solution IMO for the purpose since most folks will only ever open the Tx once, if at all. It's hard to think of a better way to securely mount rubber as though it was permanent but still allow the occasional disassembly.
Agreed that it is a reasonable solution to holding the rubber in place. And I do like the rubber grips.

The actual poor design IMO is having the tape-secured rubber wrap over the parting line for the case halves AND obscure the screw holes so that it has to be peeled off to open the case. You will note that in the manual, there is no mention of tape and it is not shown in the photos. As if it was a last minute addition. A far better solution would be to glue the rubber on (or use tape), but change the molds so that the rubber broke at the case parting line and included access holes for the two hidden case screws.

But no point in debating it. It just offends my sense of design and bugs me on the rare occasion when I need to open the case. Unless the sticktion returns, this may be the last time I need to.

Interestingly, I notice in some of the photos in the manual that the outer portion of the friction straps has the same "detent" bend detail as the inner portion. In my transmitter, the outer portion of both friction straps is smooth, making stiction an issue. Just an interesting observation.

Paul
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Old Sep 20, 2012, 07:29 AM
AndyKunz's Avatar
Illinois
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Originally Posted by pgoelz View Post
You will note that in the manual, there is no mention of tape and it is not shown in the photos.
There's actually a far less-sinister, more-accurate explanation for that.

The documentation folks got an early radio that intentionally didn't have tape on it. This was so they'd be able to quickly open it for photographs, do their thing on the inside, use it for making screen shots, then open it again to re-shoot photos, etc.

Andy
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Old Sep 20, 2012, 08:24 AM
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Originally Posted by AndyKunz View Post
There's actually a far less-sinister, more-accurate explanation for that.

The documentation folks got an early radio that intentionally didn't have tape on it. This was so they'd be able to quickly open it for photographs, do their thing on the inside, use it for making screen shots, then open it again to re-shoot photos, etc.

Andy
No sinister motives implied, I figured that was it. I was pointing it out partly because there was no mention of it in the instructions for opening the radio. It gave me pause the first time I had to open the case. I wasn't sure if I was missing something or not.

Any chance of getting a couple of the dual detent friction straps in those early radios? Those would be a major improvement over the detent/smooth ones in current radios.

Paul
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Old Sep 20, 2012, 09:06 AM
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You'd have to ask Service about a part like that.

Also, if you cool off the radio in the fridge for a few minutes, it helps the tape release better.

Andy
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Old Sep 20, 2012, 06:34 PM
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United States, ME, Bangor
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Originally Posted by AndyKunz View Post
You'd have to ask Service about a part like that.

Also, if you cool off the radio in the fridge for a few minutes, it helps the tape release better.

Andy
Great tip...thanks Andy!
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Old Sep 20, 2012, 11:14 PM
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hey guys what's up.. Ive been away since forever... that's a good sign since I don't get any probs (knock on wood)
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Old Sep 21, 2012, 12:31 AM
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No problems on 2.05 for me either. Update was smooth and checking reversed servos' subtrims and endpoints was quick and simple.
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Old Sep 21, 2012, 01:14 AM
Brett
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So Cal
Joined Apr 2002
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Can anyone recommend some decent replacements for the stick-ends? I've been using the Turbo Thumbs (from Hobby King) on my Futaba, and I love them...but I don't believe they made them for Spektrum (at least not for the DX8). The ones made for both Futaba and JR are way to big to thread on.

I'm specifically looking for this wide style stick end.

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Old Sep 21, 2012, 05:19 AM
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Canada, ON, Rockland
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DX8 uses fut style stick ends.
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Old Sep 21, 2012, 11:01 AM
Brett
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So Cal
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Originally Posted by freechip View Post
DX8 uses fut style stick ends.
Same style, perhaps, but not the same size thread, unfortunately.
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Old Sep 21, 2012, 11:16 AM
AndyKunz's Avatar
Illinois
Joined Sep 2001
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The DX8 is compatible with Fut stick ends, the DX18 is compatible with JR stick ends.

Andy
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