View Full Version : Low Head Speed Hover effect?
earetz
10-11-2007, 05:41 AM
Hi Guys. Fairly new to this hobby and getting there with the usual bumps and scraps. Finally getting my machine sorted, piece by piece. But I'm still unsure of headspeed. What is the usual effect if your headspeed is too low? I'm sure I had it dialed in right the other day, I got up a dawn with no wind and motor running sweet, thought I could almost leave it to hover itself.... but then I started tuning the engine as it felt run in, so now I need to play with it again to get it right.... Any advice on low headspeed signs would be much appreciated because I don't want it falling out of the sky with too low headspeed :wink:. I will use a govenor soon. Cheers Ed.
sbmon
10-11-2007, 07:07 AM
One sign is the head will wobble, it's hard to describe exactly but you will know it when you see it. Sounds like you don't have a tach but if you do normal mode 1700-1800 rpm is pretty common.
Good luck
shawn
earetz
10-11-2007, 07:20 AM
Many Thanks Shawn.
rototiller
10-11-2007, 05:57 PM
One of the biggest signs I see is when it desends, if you give it some power to stop it, it will slide instead of just stopping.
Did that make sense?
DK
fogger
10-11-2007, 06:01 PM
The tail kicking out sideways when adding power is a good sign you are too low. This is very disconcerting to new pilots, so it's better to wind it up a little and be disconcerted by the higher headspeed :)
-Fog
earetz
10-11-2007, 07:32 PM
Hi, thanks for the advice guys, I just got back this morning and I lost my nerve a little. Can't decide if the head speed is too high or too low at the moment. I'm making life hard for myself doing it this way, so I'll put the govenor in today and see how I go. There is a little vibration as well as I had a boom strike the other day..My first incident. :oops:
Do these main shafts bend very easily??
fogger
10-12-2007, 03:16 AM
Do these main shafts bend very easily??
Short answer: Yup.
They are relatively cheap though, so if you strike anything with a blade at speed you should just replace the main and feathering shafts as a matter of course, and check all related bearings for notchiness. After a while this will come to take you about 20 minutes or less.
-C
earetz
10-12-2007, 04:03 AM
Oh bugger!!! The fun is just beginning. :confused: