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HomeAircraftHelicopterAntiques or Out of Business › Balancing Cricket blades.
08-12-2012 02:00 AM  6 years agoPost 1
batjac

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Portland, OR

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Well, about 6 years ago I got a wild hair and decided to build up a Cricket, since I REALLY wanted one in the mid-80's. Having built and flown four Coronas, I figured I was ready for an old non-collective bird, so I bid on enough Cricket parts on eBay to build 2 1/2 Crickets. I cleaned up one frame and re-built one head, just about ready to balance the head and test fly it when I got side-tracked by a homebuilt plane. A couple of weeks ago I was cleaning out the hangar, and found the Tupperware tub with all the Cricket parts in it, so I decided to go ahead and finish off one of them. I went electric on it since I had a bunch of components just sitting around, and I'm now ready to mount the head and test fly it. I've balanced the head without the blades, but now I'm ready to balance the main blades and then the whole head.

My question is, "How do you balance the mains chord-wise?" I've got the span-wise balance of both blades the same, but the last set of old glow blades I tried to balance was years ago on my old Shuttle with the lead weight in the leading edge. For the Cricket chord-wise, do I just put tape strips on the leading edge until the blades balance chord-wise in-line with the blade mounting holes?

Mark

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08-12-2012 02:13 AM  6 years agoPost 2
gorhambirds

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Hickory Hills Illinois, usa

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Personally, I've never seen the need to balance chord wise. The blades are fixed and do not rotate ( pivot ). I must have done over 100 sets of Cricket blades in my life time up until now and they all flew perfect with only proper length wise balancing.

Steve Z

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08-12-2012 05:25 AM  6 years agoPost 3
turboomni

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East of the Equator

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Although I am a relative newbie to the Cricket fixed pitch nitro birds I will say without a doubt gorhambirds is correct. My Cricket flew very smooth with just the regular heli balancing technique. Balance the tailblades too. What the heck!

Setup is everything, All my heli's can fly far better than I can pilot them

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08-12-2012 09:57 PM  6 years agoPost 4
rcpilotmike

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GroveCity, Ohio, USA

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I agree with Steve on Cricket blades. But just FYI, I have a Koll balancer I use to balance blades. It does span and chord wise. Used along with a digital gram scale, you can make blades perfect, esp old woodies with lead weights. Not sure where to purchase a Koll balancer anymore, used to be available through Miniature Aircraft.

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08-13-2012 02:39 AM  6 years agoPost 5
batjac

rrNovice

Portland, OR

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Thanks for the replies, guys. To balance the blades, I'm using my old High Point balancer that I bought back in the mid-80's. Still works awesome. I think I read somewhere that High Point sold to another company and they're now making them out of plastic? Shame. The metal version has been working for me to balance main blades and propellers for over 25 years. Hate to think how long a plastic version would last.

Mark

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08-13-2012 03:08 AM  6 years agoPost 6
turboomni

rrProfessor

East of the Equator

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I agree with Steve on Cricket blades. But just FYI, I have a Koll balancer I use to balance blades. It does span and chord wise. Used along with a digital gram scale, you can make blades perfect, esp old woodies with lead weights. Not sure where to purchase a Koll balancer anymore, used to be available through Miniature Aircraft.
Man I would love to find one of those Koll balancers. I remember when they were still being sold but I didnt get one because they were 100 bucks if I remember correctly.

Setup is everything, All my heli's can fly far better than I can pilot them

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08-13-2012 07:31 PM  6 years agoPost 7
batjac

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Portland, OR

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TurboOmni, R/C Heli World shows the Koll Rotor Pro in stock.

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08-13-2012 07:50 PM  6 years agoPost 8
turboomni

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East of the Equator

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Thanks for the tip!!

Setup is everything, All my heli's can fly far better than I can pilot them

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11-16-2012 04:04 PM  5 years agoPost 9
Heliacious

rrApprentice

Newnan, GA

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http://www.miniatureaircraftusa.com...emart&Itemid=82

Available directly from Minatureaircraftusa.com as well.

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