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01-03-2010 03:27 PM  7 years agoPost 1
watersteps

rrApprentice

Manchester Pa. USA

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I purchased a used stratus air frame and I have a question or two. The manual calls for 700 to 720 mm blades, would this be a 60 or 90 size heli?
And what head speed will I need for slow regular flying no 3-D stuff?
Thank you for your time.

watersteps,

If you're gona be dumb, ya gotta be tough! They call me HULK!

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01-03-2010 03:43 PM  7 years agoPost 2
MinAirUSA

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Bavaria, Germany

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The Stratus is a 90 size model, but could be flown with a 60 engine with the proper gear ratio installed. We recommend a 90 size engine, and 690mm or 710mm rotor blades.

Miniature Aircraft

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01-03-2010 04:09 PM  7 years agoPost 3
watersteps

rrApprentice

Manchester Pa. USA

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Stratus Questions

Thanks MinAir
This heli will be electric powered, would you have any opinion on the head speed?

watersteps,

If you're gona be dumb, ya gotta be tough! They call me HULK!

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01-03-2010 04:47 PM  7 years agoPost 4
stenkilde

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Denmark

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Electric powered?
Way to go man!

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01-03-2010 05:05 PM  7 years agoPost 5
fiordaliso

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Bregenz/Austria

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Most of the e-powered machines can be equally flown with headspeeds somewhat lower than their nitro powered brothers.
Therefore, headspeeds around 1700-1800 should lead to good results, especially when you are not after hard 3D maneuvres.

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01-03-2010 05:08 PM  7 years agoPost 6
Warrick

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Perth, Western Australia

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Hi Watersteps,

I ran my e-stratus with a head speed of 1950 with 710's, unfortunatley I had a frequency lock out on my 5th flight (this was prior to 2.4 being available) and wrote the airframe off so I upgraded to an Ion-X2.

The heli will perform extremely well with 1950 on the head as an electric machine.

You might want to try 1850 too which should give you a smidge more flight time.

Cheers,
Warrick

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01-03-2010 05:08 PM  7 years agoPost 7
chopperben1

rrApprentice

Ontario, Canada

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You'll love this heli converted to electric.

I run an e-Stratus with the CGBole motor mount. I run 1850RPM headspeed for sport flying, and 1950 for 3D.

If you want to fly longer and do photography or orientation flying, you could easily dial the head probably down into the 1600 to 1700RPM range with the powerjazz.

With a 12S set-up, a PowerJazz, a Kontronic 30-12 pyro motor and a 10:1 gear ratio, these headspeeds are not a problem and batteries, esc and motor all run cool.

The 10:1 gear ratio is a tight fit, but I got there with a 100 tooth MinAir main gears (that I think are from the IonX2), and a Min Air 10 tooth pinion.

Good luck.

- Ben

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01-03-2010 09:01 PM  7 years agoPost 8
watersteps

rrApprentice

Manchester Pa. USA

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Stratus Questions

Thanks to everyone for the info, my motor mount is made and now I need to decide on which motor and pinion to use, thanks again.

watersteps,

If you're gona be dumb, ya gotta be tough! They call me HULK!

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