Saturday, June 21, 2008

ATG

Tried the ATG v3 on the raptor. In comparsion to the TJ pro....

Physical/Package....
The atg comes in a box that is similar size to the solid g and its physical size is the same as the solid g control box. Unlike the cheap zip lock bag that the tj pro comes in. However, the atg only comes with 1 magnet. Not sure if it will cause any balance issue in the fan, but throwing another magnet into the package probably only cost them 10cents more right? Sensors between the two are compatible.

Initial set-up
Calibration is done via 3 buttons on the governor and throttle stick position. Its actually easier to calibrate this thing than the TJ pro. Rpm read out is done via the blinking of leds, but both of them will require a tach from rpm settings. The blinking light led on the atg is over 150rpm different from the actual rpm at hover, but the idle up rpm was pretty close. It might be partly due to the fact that I am using a futaba TX. Futaba mode is provided in the G-view, but since I don't have one....Super servo mode is also done via the G-view, again, because I don't own one, I just left the 9254 in normal mode.

In-Flight Feel

ATG has got 2 modes, basic governor mode and active mode. Basic mode will function like how the TJ works, while active mode will also take into account of how the throttle channel input from the tx. Idle up was set to slightly over 2000.

Basic mode

In basic mode, the rpm was pretty consistent when the head is unloaded. However, I found the rpm to drop off a bit more than the tj pro in between each load change, like for instance between each tic and toc in tic toc. Overall, it was still ok, just that the heli felt lacking a bit in power. Rpm wasn't exactly as consistent as the TJ and it was very evident in big loops and FFF.

Active mode

For a moment I thought my governor was not working, my engine was screaming its arse off when unloaded. It was really loud. No doubt the heli felt a lot more responsive, poppy and powerful, but I bet it was also running a lot harder. The headspeed was sky-rocketing when unloaded. Doing a long tailslide will reveal how badly the overspeeding was. TBH, the rpm was the most consistent when flying around with the engine constantly loaded like in a funnel. Suprisingly, rpm was very consistent when transisting from inverted to upright funnel in a "horizontal 8 shape". In a hover, the rpm will shoot up way too high, regardless of upright or inverted. It actually got pretty predictable when the heli will overspeed and the heli actually felt pretty good. I might use this mode and increase the "gain" if I can get a G-view.

Overall, I still prefer the TJ pro...and the TJ pro with the two cables is 2grams lighter and has a much smaller footprint. The tj is really so much smaller. The TJ performs a lot better as a governor for a weekend stickbanger. I might end up using the TJ on the 90size.




Size comparsion with TJ pro.

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