Logitech LTG-2100T Gyro woes

[acwman]

Phil, sorry to hear of your problems you are having with the gyro still. Did a quick search and found the logictech site.. but the link for the distributors doesn't seem to work.

There also seems to be a new version out..

Hope you get it sorted... always worth a try sending it to someone..

[Holst]

Fastlads sell them so maybe they can put you in touch with the distributor.

Have you tried much lower gain settings? 150% is very unlikely to work and might cause some odd effects.

[maderdog_1024]

i could not get it to hold on my 600e so swapped it with a gp750

[Smoothound]

Fastlads sell them so maybe they can put you in touch with the distributor.

Have you tried much lower gain settings? 150% is very unlikely to work and might cause some odd effects.

I've tried lower gain and the hold there is gets worse so it backs up the fact that the gain is working.

I may have a word with FL but I think I'm more likely to cut my loses bin the gyro and shelve the 250 until I have something spare to try in it.

[scallybert]

I bought one of these combi packages from FL ~ a year ago, and both gyro and servo seem (at least) pretty good.

Bizarrely I have the servo on a GAUI H200 driven by a DS760; and the gyro driving a 306BB (!) on an EP100SE Pro.

Servo works very well (for the basic flying I do). Gyro works well but has a slight funny when stopping a fast yaw against the tail. This is most likely due to the 306BB servo.

Servo has an unusual pulse width. Something like 920us. This isn't all that relevant, except that the (LT) gyro should be set for this servo. 'Dedicated' or such.

Gyro set-up was easy, except that setting the radio type was a bit tedious. Your problems might be related to this ?

I think it's a good little gyro, esp for the price and on small helis (eg 100s) where a DS760 is too big.

[Smoothound]

I'm positive the gyro is setup correctly. I've been through it countless times. I just can't get a decent lock, it appears to work to a degree but it always feels loose even when it seems to be working ok.

[robgt]

I had the same feel on the Protos using this gyro. It worked, but it felt loose and like it was going to let go at any time - although it never did.

Fitting carbon tail blades on the Protos improved the performance of this gyro for me, but I still think it could have been better.

Here's 2 vids to illustrate.
Vid 1 with standard tail blades.
[ame=http://www.youtube.com/watch?v=aNryw4jyrlU]YouTube - Protos1 - 2 January 2009[/ame]

Vid 2 with carbons fitted.
[ame=http://www.youtube.com/watch?v=KFlOHuseDBw]YouTube - Protos2 - 2 January 2009[/ame]

Cheers,
Rob

[unwind-protect]

The only trouble I've ever had with this gyro has been due to vibration---even on a pretty much vibration free electric helicopter, I ended up using the big foam CSM mount to get consistent performance. Some people find it helps to fix the pcb in the case with foam, too.

[Smoothound]

Right

I now have this on my new 2nd hand Atom

It's still crap but for different reasons

Gain is set far more sensibly at 65% which was OKish but I put it up to 80% and it was still fine from a wag point of view but at both settings there is a really bad bounce on nose left stops. I thought "Gains still too high" but nose right stops are soft and squidgy, centre the stick and the tail still rotates another 10-20 degrees and mushes. If I soften the left stops the right ones are going to become impossible Tail servo is a good one, DS3500G, so it's time I faced facts and accepted the gyro is not quite what it's cracked up to be. Better than the 401, I don't think so, and that comes from a 401 hater, Buyer Beware

[acwman]

I've been spending a bit of time with this gyro coupled with the 3154 on my trex 250 . Although there seemed to be always a wag with some collective pitch, the hold seemed to be ok and never had it let go.. even on the most botched manoeuvres I managed to come up with! I've been trying to get a better hold and to try and rid myself of the wag.. I changed tail blades, and fitting a carbon control rod etc. Improved things to a point but not very much.

I then decided that I had enough, and decided to swap the gyro over for the 401.. Not the best choice on a 250 due to the size and weight!.. This was still rubbish.. and ended up putting an overly large 9257 onto it. This did improve things.. but I found that I had lost a lot of the life out of the heli... It was not as responsive, and wasn't lightning quick on the collective as i was used to..probably due to the weight of it now! putting back the 3154, and the hold was not good at all!

I eventually went back using the Logictech coupled with the 9257, and although there is some wag.. it's actually still better than the 401, and the gyro is a lot lighter.. Think I will stick with this combo for the moment...maybe until I can afford something better!.. or maybe try logictechs own dedecated servo which will run with it??


ANdy

[Smoothound]

Both my 2100T and my 3100G will be on eBay shortly, I'm getting old and really don't have the time or patience for fiddling around

[GravityKills]

IMO it's quite a decent gyro, I've got three of those.
In a 450, the 3100 servo is on the edge - it works but it's underpowered. The 9257 is better.
Tail bounce on left piro, mushy stop on right piro is normal. There is nothing I can do about it. But I usually don't do abrupt stops, so it doesn't bother me too much.
I could manage with a 2100 gyro. Would I buy it again? Definitely not, since a high-end gyro isn't that much more expensive.

The 2100 can cause drift problems, if gain is too high and vibrations appear.
It won't drift on the bench, only in flight. Recalibration does not fix this.
Lower gain and / or reduce vibrations. I have glued a coin underneath one of mine, or buy a spartan servo mount kit with steel plate.

Both my 2100T and my 3100G will be on eBay shortly, I'm getting old and really don't have the time or patience for fiddling around

that's exactly what I think. The cost savings over a better gyro are not worth it. But it is quite small and light, that's a clear advantage.

oh yeah and some of my helis seem to be happier than others

[Smoothound]

IMO it's quite a decent gyro, I've got three of those.
In a 450, the 3100 servo is on the edge - it works but it's underpowered. The 9257 is better.
Tail bounce on left piro, mushy stop on right piro is normal.

I'd say those 2 comments contradict each other but each to their own I guess. Even with my crap flying I couldn't just put up with it and call it normal

[GravityKills]

I'd say those 2 comments contradict each other but each to their own I guess. Even with my crap flying I couldn't just put up with it and call it normal

see for yourself... here it's flying:
http://juza.1g.fi/videot/Lippulaivassa.wmv
it's good enough for me. It depends on your expectations, of course.

[SJMII]

Try this ..
http://www.e-flex.fr/logictech/LTG2100_US.pdf

It really is a good gyro just a bi^%% to setup ...
If you do it right . Good luck and be patient