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HomeAircraftHelicopterAerobatic FAI F3C F3N Contest › What headspeed for F3C With Raptor90se
02-09-2006 11:43 AM  12 years agoPost 1
Raptor50V2AUST

rrApprentice

Perth, Western Australia

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What Headspeed should I be running on my Raptor90se with SAB 710mm,OS91 Spec ??

thanks

Raptor90se

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02-09-2006 12:30 PM  12 years agoPost 2
damaen

rrVeteran

Umeå, Sweden

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Well...

I guess you should run it at the headspeed that feels best to YOU.

Henrik

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02-09-2006 02:41 PM  12 years agoPost 3
GM1

rrElite Veteran

Tallahassee, Florida US

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headspeed
I would suggest that F3C uses a little higher headspeed than the normal 3D options BUT it depends on the gear ratio you are running. On my FAI Stratus, I am turning 1980rpm but I also am using a 7.91:1 gear ratio to keep the motor with its specified rpm range.
Gordie

On a dog sled team, if you're not the lead dog, the view never changes.

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02-09-2006 03:45 PM  12 years agoPost 4
falcon

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UK

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damaen! That was a crap answer

www.m0kwr.com

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02-09-2006 04:06 PM  12 years agoPost 5
damaen

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Umeå, Sweden

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falcon, many people ask what rpm, how many degrees etc... thinking that there is some "magic" number they have to use, instead of trying what feels best to THEMSELF. What You prefer is not necessarily what fit best to Me.

Henrik

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02-09-2006 04:33 PM  12 years agoPost 6
GM1

rrElite Veteran

Tallahassee, Florida US

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F3C
For F3C type questions, I'd suggest using the Aerobatic FAI F3C section here at RR. That topic area specializes in answering F3C type questions and the FAI guys check in pretty regularly.
Gordie

On a dog sled team, if you're not the lead dog, the view never changes.

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02-10-2006 10:37 AM  12 years agoPost 7
damaen

rrVeteran

Umeå, Sweden

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Check page 3 under "Drehzalen" for an idea about what people are using, the numbers are for hovering and aerobatics:

http://www.ercmarket.com/Manuals_Helis/zamora.pdf

Henrik

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