gwright
Senior Heliman
Location: Melbourne, Fl
My Posts This: Topic Forum | I had the HS85MG servos in for a while,.. as those seem to be the "cheapie servo of choice". I have switched to futaba 3102's and the difference is enormouse. No more backlash/freeplay,.. they're rock solid. Much more precise than the HS85's also. Yes, more expensive, but it's a helicopter,..nothings "cheap"  I've been experimenting with power systems to get performance on 10 cells, and currently I have a Hacker B50 11L in it with a 13 tooth pinion. With a 16 tooth pinion it has quite a bit more "oomph" than the 14 cell Kontronics setups and it's much lighter with only 10 cells. However, full 3D flights are around 5 minutes due to the current. This is with CP2400 cells. I have some panasonic high voltage 3000's on order to make a couple 12 cell packs. I think with the 13T pinion and 12 cells on this motor I could have what I want. I relaly want 7 to 8 minutes of full 3D like I get with the 16T pinion on 10 2400 cells. The newer "high voltage" panasonic 3000's seem to deliver the voltage at higher currents just like nicads,.. so I'm hoping this will be the final answer. As for configuration,.. I have the 3 3102's in it, a GY401/9253 on tail,.. the mikado white glass blades, metal swashplate, auto unit, stiffer head dampening upgrade with thrust bearings on the blade axle,.. 149DP reciever, K&S paddles in the FRONT hole (rear hole doesn't add controll,.. just makes them twitchy) and currently I'm using a hacker master series controller,.. the 40-3P. I had to put a CPU cooling fan on the controller to eliminate thermal shuttoffs. The current is not the problem,.. but the continuous part-throttle is a problem with the smaller controller. I'll be trying a schulze and a 70 amp hacker controller in the coming weeks. I have a theory that the "heli" ESC's in governer mode aren't giving full power at full stick, hence the experiments with the non-heli ESC's and using throttle curves. I think people are missing the boat using the lower KV motors with large pinions. The higher KV of the motor, the more efficient it is, and the more current it can handle,.. you just have to gear lower to get the torque. What I've found in the last couple years flying electric planks is that the best setup is always the highest KV motor you can use for your particular gearbox at it's highest ratio,..hence the much hotter than normal motor (B50 11L) with a much smaller pinion than is normally used in the logo. I've tried the kontronics fun600-18, B50 15L, b50 15S (was too hot) and B50 11L. I really think the 11L on around 12 cells is going to be correct,.. or maybe even an 8 or 9 turn B50 long case for a 10 cell setup. If not doing 3D, any of the above will work,.. but I want good performance, and don't care about getting 9~10 minute hovering flights,.. but rather 7 minutes or so of full 3D. You're gonna love the little logo 10. Auto's with the mikado glass blades are a hoot,.. I've even done a bunch of inverted autos. There's plenty of energy at the bottom,.. moreso than most 30 glow machines I've flown. now if we could just get Ralf to make a driven tail for it...... |
Just bought aLogo 10. Has anyone out there got one and could let me know on any building tips etc.Also what do you think about the way it flies.
