Take Off Performance Data

[blakecarl]

Does anyone know of a source for or have take off performance data they would be willing to share? Data specific to BC12-65's would be perfect, but anything on Model B's would be useful. I have been able to find some performance data in the forum, but little of it dealt with take off performance. In lieu of performance data, are there any "rules of thumb" that can be used?

[Forrest Barber]

Re: Take Off Performance Data

You can usually land in a place that you cannot take off from.

I did the tests for the F-19 w the 100HP, 375 ft worked for it.....
Try checking your AS for good calibration , then just try out your ship at various wind speeds , ground distance and obstructions record temps and pressure altitude.

[akndrifter]

Re: Take Off Performance Data

At Valdez a couple of years ago my shortest takeoff was 212' (me and 5-10 gals), I think it was around 60*F. I think the longer takeoff was around 250'. This is in a BC12D 65hp, at around 740lbs empty.

[Guest]

Re: Take Off Performance Data

You can usually land in a place that you cannot take off from.

Is that because of the landing or the length of the runway?

[Robert Lees]

Re: Take Off Performance Data

Naughty, Dave!

No, it's true...the 65 hp Taylorcraft, like a 40 flap 150 or 170, will plonk down over a hedge into a very small field. So small, in fact, that it won't get out again, unless through the hedge or on a trailer.

Now put 100hp in that SAME Taylorcraft, and it'll get out of where it can't get in to. Ask me how I know.

Oh:

around 740lbs empty

For a BC12D? Who's plonker are you pulling?

[akndrifter]

Re: Take Off Performance Data

It was completely stock until I put bushwheels on.

[VictorBravo]

Re: Take Off Performance Data

It is THEORETICALLY plausible IMHO that using much larger diameter tires will allow a shorter takeoff roll due to achieving a higher AOA on the ground... even with the A-65 engine.

If a fine pitch prop is being used this could move from the theoretical to the practical, albeit the takeoff distance may still be a little more than the landing distance.

THEN you'd have to think about obstacles on takeoff and approach to arrive at anything use-able.

[Mark Julicher]

Re: Take Off Performance Data

Interesting idea Bill.
Maybe 7 or 8 inch tires would help, but since the B model sits on the ground at very near the stall angle of attack, "much larger tires" might create more drag than lift.

What say the Alaska guys? Do you/Can you fly off the ground in a three point attitude using tundra tires? Enquiring minds want to know!

[akndrifter]

Re: Take Off Performance Data

I don't think bushwheels changed my takeoffs so much (on a regular runway), but they sure do help on landings. Mostly they absorb a lot of the bounce. But I've found that if I push forward on the yoke just before, or right after it breaks it will kill all of the lift (and bounce).

[astjp2]

Re: Take Off Performance Data

I got 8.50's, O-200-8, M74CK-0-43, half tanks, 910 empty weight, and it took 225' at lake hood on a 68 degree day, I could have gotten off sooner with more practice. Tim

[akndrifter]

Re: Take Off Performance Data

I did some flying today, she came right off with the tail a couple of inches off the ground. But there was also about 18-25kts of wind.

[pete]

Re: Take Off Performance Data

You might find the factory published figures on the Foundation website.
I suggest the Mountain Flying Bible by Sparky Imeson. It has alot of good "rules
of thumb" and alot of other good flying information whether you're flying in the mountains or not. One I recall hearing is "increase in weight"/2 = "increase in takeoff roll"(ft). Seems to match some light plane performance charts. I agree with Forrest, a good way to find out is to go out and try.

What say the Alaska guys? Do you/Can you fly off the ground in a three point attitude using tundra tires? Enquiring minds want to know!

Yes, you can! Do a full power stall and note the deck angle. It's steeper than
3-point attitude.

Pete

[jim cooper]

Re: Take Off Performance Data

I have a 65hp. The prop is 72-45 old mccauley (polished) The engine comp. is all above 76, I usually use only the main tank-12 gallons. I have wheel pants. The T-Craft does not get out as well as my 85 hp champ did. Its a little slower. I operate out of 2300 feet paved, trees at one end. The T-craft CAN be gotten into a small field where there would be no chance of getting it out. (slipping and. slowing it down) I wish I had an 0-200 on mine as it would be a great performer but.....flown logically, its a great plane, so much nicer than a cub or a champ! Clicks em off at 90 mph, 4 gallons per hour, pretty quiet and the lines of the airplane (to me) are good looking! I was fortunate to have had Russ Hardy of Amherst N.Y. build mine. He is the Bill Pancake of Taylorcrafts. I am NOT a bush pilot so a better pilot MIGHT take my airplane and get out of a much smaller field. As others have said, so many things enter into it, temp, wind, wing tanks filled? Solo or with passenger? I would be uncomfortable if the runway was , say, 1600 feet instead with trees, etc.( for a daily habit.) How many of you wheel land verses 3 point? I can never do a correct wheel landing! Always screw it up! 3 point on grass, I do pretty well!jc

[jim cooper]

Re: Take Off Performance Data

I have a 65hp. The prop is 72-45 old mccauley (polished) The engine comp. is all above 76, I usually use only the main tank-12 gallons. I have wheel pants. The T-Craft does not get out as well as my 85 hp champ did. Its a little slower. I operate out of 2300 feet paved, trees at one end. The T-craft CAN be gotten into a small field where there would be no chance of getting it out. (slipping and. slowing it down) I wish I had an 0-200 on mine as it would be a great performer but.....flown logically, its a great plane, so much nicer than a cub or a champ! Clicks em off at 90 mph, 4 gallons per hour, pretty quiet and the lines of the airplane (to me) are good looking! I was fortunate to have had Russ Hardy of Amherst N.Y. build mine. He is the Bill Pancake of Taylorcrafts. I am NOT a bush pilot so a better pilot MIGHT take my airplane and get out of a much smaller field. As others have said, so many things enter into it, temp, wind, wing tanks filled? Solo or with passenger? I would be uncomfortable if the runway was , say, 1600 feet instead with trees, etc.( for a daily habit.) How many of you wheel land verses 3 point? I can never do a correct wheel landing! Always screw it up! 3 point on grass, I do pretty well!jc

[astjp2]

Re: Take Off Performance Data

I have a 65hp. The prop is 72-45 old mccauley (polished) The engine comp. is all above 76, I usually use only the main tank-12 gallons. I have wheel pants. The T-Craft does not get out as well as my 85 hp champ did. Its a little slower. I operate out of 2300 feet paved, trees at one end. The T-craft CAN be gotten into a small field where there would be no chance of getting it out. (slipping and. slowing it down) I wish I had an 0-200 on mine as it would be a great performer but.....flown logically, its a great plane, so much nicer than a cub or a champ! Clicks em off at 90 mph, 4 gallons per hour, pretty quiet and the lines of the airplane (to me) are good looking! I was fortunate to have had Russ Hardy of Amherst N.Y. build mine. He is the Bill Pancake of Taylorcrafts. I am NOT a bush pilot so a better pilot MIGHT take my airplane and get out of a much smaller field. As others have said, so many things enter into it, temp, wind, wing tanks filled? Solo or with passenger? I would be uncomfortable if the runway was , say, 1600 feet instead with trees, etc.( for a daily habit.) How many of you wheel land verses 3 point? I can never do a correct wheel landing! Always screw it up! 3 point on grass, I do pretty well!jc

You might not want to mention your polished prop, its unairworthy per McCauley data, It needs to be alodined and painted....and lower your tire pressure for wheel landings, you can mush them in and get the yoke foreward to keep from bouncing. I can do both wheel and 3 point, I perfer to 3 point in low winds but you can lose it real quick if the winds are gusting. The wheel landing helps keep you straight and you can hold a little power to straighten you out if it is windy. Tim