Best angle of climb

[lowNslow]

The best angle of climb speed (Vx) for the A and B models is as George mentioned above is 67 at sea level - it increases with altitude. Best rate (Vy) is 89mph at sea level and decreases with altitude and where the two meet is the "Absolute Altitude" of the airplane. Doing some rough interpolations it looks like the Vx increases roughly .8 kts per 1000ft giving you a Vx at 6000ft of 72mph and a Vy of 84mph.

[pingo]

Thanks Karl, that's useful info. What I'm really after though is that calculation (or lookup) for the actual angle of climb at those speeds, like in degrees. For example, if you wanted to look on a map and see if you could outclimb terrain. I guess all that's needed in addition to your calculation is what is the vertical speed at Vx at 0 and 6000 feet?

[lowNslow]

Cessna doesn't really give us enough info to compute that with any accuracy but again using rough interpolations and 6000ft density altitude if we assume using a Vx of 72mph indicated we would have a TAS of about 81mph (7128 fmp) and using a conservative climb rate of 375fpm (at max gross) that would give us a climb angle of 3 degrees.