just wondered what sort of headspeed people are running ,in our club it seems to be 2100 give or take abit ,ive got a full metal head but would like a bit more punch is it ok to rum a bit more ??
08-31-2008 07:38 PM
jbdww Senior Heliman Location: Round Rock, Texas
I run mine at 2100 also. What pitch are you running? Joe
Skids Up
08-31-2008 08:01 PM
duceduc Veteran Location: Saitama-Ken, Japan
try +-15 pitch and 2100rpm
Do It! Do It™ - Duc S
08-31-2008 08:13 PM
JAGNZ rrProfessor Location: Auckland, New Zealand
2000 and +/-13 works for me. Running a Hyper here.
Running 2000 with +/-10 but its bogging all over the place ....think the motor is ready for a rebuild !!! also not very happy with the Curtis govener !!! time to go to my spare rev-max !!!
08-31-2008 09:04 PM
jbdww Senior Heliman Location: Round Rock, Texas
I use the Curtis Gov and it works good for me. I have +-12 on my pitch and I have plenty of punch.
Skids Up
08-31-2008 09:36 PM
rexxigpilot Senior Heliman Location: florida
Sim-R
Assuming you run a OS 50 Hyper, you can get more pop by going to 2100 or even 2150 HS. Your 2000 HS puts you smack at the peak of the torque curve (17,000 rpm) for the 50H and a 8.5 gear ratio. It is better to run just past the peak so that when the blades bog and the HS slows a bit your engine will fall to the torque peak instead of down from the peak torque. You will also have more stored energy in the faster spinning blades to provide pop.
I agree that your engine may need a rebuild. My 600N doesn't bog at 2000 HS (ID1) using ±11° and 30% nitro unless I really get sloppy on collective. Almost impossible to bog at 2150 HS (ID2) on my machine.
08-31-2008 10:51 PM
louk05 Key Veteran Location: Flying in BelAir Maryland
yeah12+12- and 2000 HSP and 14+14- and 2100 HSP. lots of pop. What blades are you running and motor and pipe?? and nitro??
Fly Hard,Crash Hard,Upgrade, Align,AMA#906056
08-31-2008 10:53 PM
Simon - R Senior Heliman Location: uk
Thanks guys ,good advice , engine is a hyper,align pipe just ordered rebuild kit but i think the problem is fuel could not get any magnum from my local shop so tried some model technics bekra 20 !!!!!! guess that was a mistake !!!!
