So, put a Turnigy in the tanks, adjust it correctly (which is quite easy), and the untank motions stop immediately. Turnigy's impute inertia to the tanks, so there are no jack rabbit starts and stops or pivots.

I tried a Turnigy (which I bought from you) in my Tiger for 2 battle events and promptly removed it afterwards. All I could get out of it were what I describe as "delayed" starts and stops, instead of a realistic inertia effect. I spend a great deal of time fiddling around with it and could never get it to work to my satisfaction. When I got a decent effect for forward motion, the reverse motion was still too jerky and fast or I'd get the reverse ok, but forward then had way too long of a delay before any movement occured. It was anything but easy to adjust for me. 2nd time I battled with it I had a run away full throttle condition occur after a direction change 3 or 4 different times causing the tank to go crashing into an obstacle on field.

After all that stuff, the Turnigy now sits in a bag collecting dust.

The device was designed to slow the action of retract landing gear in RC aircraft, not as an inertia effect generator in tanks. It didn't make the cut for me. A true inertia electronic device, designed as such, would be a welcome addition for the Tamiya models.

Never had a problem with the 7 of my tanks with Turnigy's installed, and have sold them by the peck and no complaints.

For one thing, the Turnigy reacts, it does not act, so any run away tank is some other problem. Are you sure you had it installed correctly, and what kind of radio are you using?

For installation I very closely followed the instructions laid out by Monotheist in the following thread:

http://www.rcuniverse.com/forum/m_89...tm.htm#9000272

I believe he was the first to install one of these devices in a Tamiya tank..

I could not get the tank to have equal amounts of delay for stopping and starting in BOTH forward and reverse directions no matter how I adjusted the pots. The runaway full throttle happened while going in reverse, right after changing direction from forward to reverse. It may have been from changing direction too fast with the stick and the delay response getting backlogged by the Turnigy, I don't know. I do know that the runaway condition promptly ceased after removing the Turnigy and has never re-occurred since I took it out of the tank. Each time the runaway occurred centering the throttle stick would NOT stop the tank, I had to power off the radio to get it to stop moving. I only experienced that problem when the Turnigy was installed.

My radio is a 75Mhz Polk Tracker III, controlling a 75Mhz, 8 channel, dual conversion, FM Futaba receiver installed in the tank.

Interesting. I use ancient Futaba Skysports, and to this day have never had the first problem with either the Turnigy or the radio. I do know that many of my customers use much more modern radios, but again, never heard of your problem with the Turnigy.

Anyone else had this problem with Turnigy and Tamiyas?

Got this from the Turnigy discussion site which may help:

"You need to adjust the travel speed in both directions with the adjustment pots. The pots do not correspond with each output channel, they adjust the speed for all three channels and reverse channel 3 only. SW1 and SW2 control speed and SW3 reverses travel direction on Ch3 outuput. Just keep dialing in the #1 & #2 pots until you get the desired speed in both directions. One landing gear servo will need to go into Ch3 and be reversed, unless you have a reversed servo."

Yeah, the Turnigy's operate by input alone, so you probably had a radio glitch and then blamed it on the Turnigy unit. When I built my first Tamiya tank I had a radio glitch, but never found a reason or cause and it never returned either.

I tried the Turnigy unit in my M4A1E8 and loved it IF it were wide open country, it is not favorable for closed in operations and I took mine off.

It's certainly not for everyone or every application.


- Jeff

Phew! For a second there, I was regretting the Turnigy chip purchase and was going to return it to my local hobby shop. Really looking forward to using it in my Pershing and that will determine whether I'll get another for my KT.

Yeah, I was amiss in not mentioning the Stuarts. They had the same gyro problem by being disliked and not used. It was the same one designed for the Lee Medium and only elevation. The Stuarts had the added problem of a very small, cramped 2 man turret and the gyro was left off as it presented a problem in loading the gun with the small breech constantly moving up & down. The Stuarts did have a good hydraulic traverse traverse which seemed to be dependable. Another fast, fun tank like the M-41, but awfully small and no room to move inside.

T-44....are you referring to the Russian medium? Wasn't aware that any Russian tank had a stabilzer before the T-70. I've been in T-54/55s and T-62,. but never saw anything that looked like a stabilizer....only extremely huge breech & recoil asemblies.

How 'bout it Hal....are you reading? [:-]