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HomeAircraftHelicopterMain Discussion › Heli speeds?
11-13-2005 06:50 AM  12 years agoPost 1
ChrisK7

rrApprentice

Stanfield, Ore. 97875

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Has anyone radared there heli's yet to get some top speed numbers?

I mounted a Magellan GPS to my Carbon Predator gasser and my Evo 90 but the speed readings I got seemed low.

For the gasser I only got a max speed of 38 mph and on the Evo 90 I got a max of 57 mph.

These were straight line speeds. (I didn't dive to gain speed)

I'm going to try it on the Evo 50 tomorrow because it seems like it is faster than the other two heli's I have.

I'm thinking that I didn't maintain fast forward flight quite long enough for a good average. I was flying across the street from my house in a little league ball park with trees and other objects to worry about.
Maybe I'll try it at the field with lots of room for a longer flight time for the GPS to be more accurate.

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11-13-2005 10:51 AM  12 years agoPost 2
tchavei

rrProfessor

Portugal

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I think I saw a site somewhere where a guy hit 100mph with a 90 (marked with a radar gun) but he dived to gain speed.

Tony


--------------------
"Perfection and patience usually walk side by side..."

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11-13-2005 11:07 AM  12 years agoPost 3
PaulJC

rrElite Veteran

Hertfordshire UK

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Don't forget that GPS will only give you straight line ground speed

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11-13-2005 11:42 AM  12 years agoPost 4
zoom boy

rrKey Veteran

N.E. Lincolnshire UK

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Someone did the same as you (mounted GPS) and got 101mph IIRC with a 90 size.

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11-13-2005 11:51 AM  12 years agoPost 5
BARTGALAMBOS

rrVeteran

Huntsville, Alabama! U. S. A.

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I am going to purchase GPS Flight's hardware and view it on Microsofts Streets and Trips. I use this program and Touatec to fly flight lines for aerial photo in full size ships. Streets and Trips gives a GPS pane that you or a friend can read off the laptop!

You can also download a free program to use from Ashtec (Ashtec Evaluate).

Bart

Precious Metal Investor!!!

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11-13-2005 12:21 PM  12 years agoPost 6
cessna151

rrVeteran

Missouri... Originally Indiana

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Don't forget that GPS will only give you straight line ground speed
GPS will give you speed no matter what it's doing, straight line or not.

--Eagles may soar high, but weasels don't get sucked into jet engines!--

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11-13-2005 03:58 PM  12 years agoPost 7
PaulJC

rrElite Veteran

Hertfordshire UK

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GPS will give you speed no matter what it's doing, straight line or not.
Yes, i work with GPS all day long, in 99% of units it is calculated on the distance between 2 points at 1 second intervals, hence for any given second it wil calculate speed based on a straight line between these 2 points without any climbing or descent figures used in the equation.

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11-13-2005 05:49 PM  12 years agoPost 8
ericslife

rrApprentice

vancouver b.c. Canada

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raptor 90
flat and level,GPS,126 kph running rich while breaking in new OS eng.
havent done the Vario yet.
Eric D

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