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Low Head Speed Helicopters Low Head Speed Helicopter Setups and Flying info


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Old 11-09-2016, 10:44 AM   #1
Relisys190
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Default Low Headspeed Goblin 660mm tail questions

Considering trying some low headspeed stuff on my Goblin with 660mm blades and a 4225-610kv. Currently running around 2100rpms gobs of fun.

Considering about 1500-1600rpms but I am curious about the tail.

Should I :
A: Get a triple tail system
OR
B: Change the tail pully to speed up the existing two blade tail.

I'm not worried about cost


Thanks,
-Markus
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Old 11-09-2016, 03:03 PM   #2
im4711
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Very easy to find out -> bring rpm down and test the tail authority.

Normally I would only make major changes if I plan to use the machine dedicated only for low rpm. I normally do not do that and rather prefer a larger rpm range. So if you use a 3 bladed tail it could become pretty noisy.

I simply suggest - give it a try. Worse thing that can happen is that the tail blows out when adding a bit more aggressive collective pitch. In case you go into low rpm its like running a pirouette and you should be able to manage that.

For my extreme low rpm I time by time experience it and simply adjust my flying style at that rpm to it. It allows me to switch from a 1800 rpm all the way to 900 rpm and back. Its kind of cool when people think you lost complete power
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Old 11-18-2016, 03:03 PM   #3
Dennis P
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The torque on the tail is much lower at lower head speeds , where you will run into problems is if you get to ham fisted, faster traveling piro maneuvers or piro manuvers with stronger winds. Just try being smooth and graceful and you will be amazed how the tail will work and what it can do. Nice big smooth funnels at 1100 rpm are cool.
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