Deflection Gauge
06-25-2006, 07:43 PM
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Deflection Gauge
I've been setting up control surface throws with a ruler, but I've never been happy with the accuracy of the measurements. I'm a diehard DYI type so I've experimented with various reverse-protractor cut-outs, level gauges on clothspins, etc. but everything still moves around way too much to get any real precision.
I came over here to the IMAC forum thinking you guys are all about precision adujstments to your setups, what do you use to measure your throws? One of the commercial gauges? How do they grip the reference surface, and indicate the control throw?
-Balsacutter
I came over here to the IMAC forum thinking you guys are all about precision adujstments to your setups, what do you use to measure your throws? One of the commercial gauges? How do they grip the reference surface, and indicate the control throw?
-Balsacutter
06-25-2006, 11:05 PM
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RE: Deflection Gauge
http://www.horizonhobby.com/Products...?ProdID=HAN192
I know several people have had good luck with these.
I know several people have had good luck with these.
06-26-2006, 08:49 AM
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06-26-2006, 12:33 PM
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RE: Deflection Gauge
Take also a look at this idea, which is very cheap and can give much more precise and repeatable measurements than most of the gauges that you can buy:
http://www.rcaerobats.net/DeflectionGauge.htm
Bob Pastorello and I tested it, and in particular he told me that with such a device he was able to MEASURE one step of subtrim of his JR10x.
http://www.rcaerobats.net/DeflectionGauge.htm
Bob Pastorello and I tested it, and in particular he told me that with such a device he was able to MEASURE one step of subtrim of his JR10x.
06-26-2006, 01:30 PM
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RE: Deflection Gauge
Excellent, Stek79!
I will dream about owning one of those beautiful digital gauges someday (especially for accurate wing incidence measurements), but for a Do-It-Yourself person like myself, the clever protractor-and-plumbline solution for a deflection gauge looks like it's worth a try.
From the pictures it's hard to see your method of mounting the protractor card to the plastic clamp. It looks like the depron card is attached to a little arm epoxied to the clamp? Does the card mount pivot somehow to set a zero-deflection reference point? If so, how do you make the pivot strong enough?
By the way Stek79, you have nothing to apologize about your excellent English. Perfectly understandable. I think it's a great thing to have a models bring together a multi-national group.
-Balsacutter
I will dream about owning one of those beautiful digital gauges someday (especially for accurate wing incidence measurements), but for a Do-It-Yourself person like myself, the clever protractor-and-plumbline solution for a deflection gauge looks like it's worth a try.
From the pictures it's hard to see your method of mounting the protractor card to the plastic clamp. It looks like the depron card is attached to a little arm epoxied to the clamp? Does the card mount pivot somehow to set a zero-deflection reference point? If so, how do you make the pivot strong enough?
By the way Stek79, you have nothing to apologize about your excellent English. Perfectly understandable. I think it's a great thing to have a models bring together a multi-national group.
-Balsacutter
06-26-2006, 01:49 PM
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RE: Deflection Gauge
Balsacutter,
many thanks for the compliments!!!!!
I have other pictures that can help to understand the gauge, if you want send me a PM with your mail, I'll be very glad to send them to you!
many thanks for the compliments!!!!!
I have other pictures that can help to understand the gauge, if you want send me a PM with your mail, I'll be very glad to send them to you!
