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HomeAircraftHelicopterAerial Photography and Video › Bigger mains for my raptor 60?
06-06-2009 05:11 AM  9 years agoPost 1
wkruger

rrNovice

Breckenridge, Colorado

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I'm adding an AP mount to my raptor 60 with 660 woodies.

I planned on upgrading to carbon fiber regardless, but i'm wondering what the theory is on going bigger? Also, what the biggest blade an OS70 will turn?

I live at high altitude (about 9600' and have lift/engine power issues as it is. Would 700 blades benefit me or frustrate me...

Thanks,
Will

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06-06-2009 02:27 PM  9 years agoPost 2
nocontrol1

rrApprentice

Melbourne, FL, USA

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rappy 60
I run 690s on a stock setup with on OS70. Its said anything longer will give interference issues with the tail blades. Its not too bad to stretch the boom as the 90 parts are easily available.(tail boom, shaft, supports, ect) The 70 swings the 690s easily with the stock pinion. going longer may need a different gearing.
You will notice a big difference going to 680s or 690s compared to the 660 woodies. At sea level I have no problem autoing on 680s at about 13 lbs.

Rob D.

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06-06-2009 03:03 PM  9 years agoPost 3
wkruger

rrNovice

Breckenridge, Colorado

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great photos in your gallery nocontrol...

a little off topic, how do you deal with the exhaust smoke and what type of mount do you have?

Thanks for the advice on blades too!

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06-07-2009 01:12 PM  9 years agoPost 4
nocontrol1

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Melbourne, FL, USA

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Hi Will- I use a piece of 5/8" automotive heater hose to route the exhaust to the front and down. The camera shoots out the back, making the boom an alignment aid. Mount is homemade out of CF tubes- I'll try to post a picture later today.

Rob D.

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