Incidence Meter
 

I posted this on a different thread and got a couple of e-mails that I should post it here.

Years ago I needed a second incidence meter and couldn't get to a hobby shop so I whipped this one up out of 1/4" balsa. The left vertical is a snug fit on the horizontal and the notches were cut after assembly and after marking with a square. Put a small bubble level on top (I use a line level) and you've got a no cost incidence meter.

It measures dead on with my Robart meter. It won't tell you degrees but for 0-0 measurements it's great.

Dave

RE: Incidence Meter
 

It looks a lot like mine....I've had this one forever. Nowadays I use it with this angle finder. ;)

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FBD. [sm=regular_smile.gif]

RE: Incidence Meter
 

I like the angle finder! Excellend idea!

Dave

RE: Incidence Meter
 

[link=http://www.wixey.com/anglegauge/index.html]This[/link] meter looks like the cat's meow if only I could bring myself to spend the $39.

RE: Incidence Meter
 

The most accurate incidence meter is - MS Excel and a ruler.

Joe

RE: Incidence Meter
 

I agree, A flat table, a ruler and a calculator is all you need.

RE: Incidence Meter
 

And some trig knowledge. :) It's been a while for me. Would you mind sharing the necessary formulas? :)

RE: Incidence Meter
 

As you may remember that sin over cos is tan and therefore it is the equiv of oppisite leg which would be your difference in height between leading and trailing edges measured off your table top over the adjacent leg which is chord of your wing. Plug this number into your calculator and it shoud give the degrees of incidence.

RE: Incidence Meter
 

Actually you don't need to know any math at all.

Transfer your measurements to a piece of paper and measure the angles. Use a protractor. You can buy them for under $1 some places.

You can also simply attach the protractor to the neat frameworks shown in the pictures above. Attach a plumb bob (can make that for under $.05) and you've got as accurate an incidence meter as one you'd pay lots more than a dollar for and it cost you almost nothing.

You know, there is almost always more than one right way to do a job.

RE: Incidence Meter
 

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This photo shows a plumb bob made of wire pivoted through a hole. A point on the end indicates degrees on a card scale.

RE: Incidence Meter