Was thumbing through a magazine last month and saw a wing incidence, thrust angle, measuring set article. i was for a product that hooked up to the computer and you set the instament on the base of what angle you are trying to measure on you plane it then dig the calculation as you looked at the computer. Was wondering if anybody knew where i could find this product or remembers what magazine publication it was in. Thanks for any help.

Is this the one you saw?

http://www.aeroperfect.com/mu-9000x_usb.html

BobbyG

There are much cheaper ways to get the job done

Thanks Bobbyg im not exactly sure that that is the same one. The one in the magazine had plywood parts like a box that could be bolted to the motor for engine thrust angles and such, this could also be the same product as the link you have sent me just updated in the mag. w8ye, i have been using the cheaper ways for many many years now, just like new tech stuff, and you cant get any more percise than this style of measurement

Thanks Planecrazy

Hey Bobbyg after looking at the article in the mag listed on thier site was able to see that it is the same product. Love this place just ask a question and somebody will help you out.
Once again thanks

Planecrazy

Glad to help, Planecrazy.

I've learned a bunch here on RCU. It's an amazing community.

BobbyG

I'm using the Top-Flite gauge set that you clip to the wing (or other surface). Using the aileron, elevator and rudder deflections information for low/high gain throws if given in mm or inches. Adjust using your transmitter accordingly. Works great and I find it very accurate.

BUT, I cannot remember the trigonometry required to convert degrees to length of the radian arc. I think it is:

Multiply by pi and divide by 180 to get the angle in radians then multiply by the radius to get the arc length.

Is there an easier way or a chart I could use?

ggraham500:

To convert degrees to length of the radian arc:

Length of the radian arc = (Pi / 180) x Radius x Degrees

Which aproximates to 0.0174 x Radius x Degrees

Sorry, I don't know of any chart.

Regards!

Anyone with MS excell could create a chart from this equation.