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Taurus Flyer -> RE: post some pictures of your pattern plane!! (10/24/2009 9:35 AM)
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quote:
ORIGINAL: sledge_78
Taurus flyer,
I just receive the plans to build a Ed Kazmirski ''Taurus''. A question I have for you is: The original Taurus was equipped with a .45 engine (Veco I believe) you have mentioned yours has a ,61. Does it need all that power from a .61? Would a .46 be enough?
I have both, I was just wondering why you selected a .61.
Your Taurus looks great. I plan to finish mine same as the original also.
What is/was reason for the brakes on the landing gear? I saw them on the plans and could not figure why they would be needed.
Gerry
Sorry Gerry, I didn’t read your post earlier.(send you a PM as reminder for this post)
About the Taurus,
Engine
First Taurusses already did fly in 1961, Ed Kazmirski did start design the first Taurus probably already in March, April 1961.
In that period the K & B 45 RC was very popular and used on scratch built Taurusses in 1961 and 1962.
For that reason we see the outlines of the K & B 45 RC. on any plan of that period (Picture 1 and 2)
We see a Veco Lee 45 RC used by Ed Kazmirski in April 1962 on the first commercial "Top Flite" Taurus.
During the world championships in August 1963 in Genk in Belgium we can count 12 Veco 45 RCs on the 17 Taurusses (see picture 3).
We also see the first 0.49 s on the nose in that period.
THIS IS ONLY A RANKING LIST OF THE TAURUSSES, THERE WERE 39 MEMBERS AND PLANES TOTAL. THIRD PLACE WAS FOR ED KAZMIRSKI.
The Taurus is designed for the 0.45 so that’s the best choice for classic pattern flying to keep the weight low.
My Taurus always does fly with reduced power, only in vertical maneuvers the 100 % is used
The plane is also heavier, about 4000 gram and with that wing loading and power I also can fly with stronger wind, even 6 beaufort is possible!
Wheel brakes
In the past two maneuvers of the pattern program you did have to make “on the ground”, “Proto taxi” before and "proto taxi to hangar"after flight. See the picture 4
For this maneuver the planes have to be designed to taxi and turn and stop on the runway with idle engine. For these maneuvers the brakes were needed.
Designed to taxi? Yes, think about cross wind, while turning!
So 0.45 , because enough is enough, 0.60 you can use and the brakes you can mount them if you have to make the proto taxi maneuver. I use the brakes and can stop the plane on a relative short runway, even if there is no nose wind. You must reduce the speed to turn to keep the three wheels on the runway.
BTW In my thread “Redesign and reconstruction of the Oldest Taurus on Earth”, in Classic Pattern Flying of RCU, I do show the rebuild if the first Taurus of Ed Kazmirski, the result is shown in picture 5. The nose wheel brake isn't mount yet
http://www.rcuniverse.com/forum/m_7950207/tm.htm
Success with your Taurus, you will be happy with that plane but remember when turning you must reduce the speed to keep the three wheels on the runway last picture.
Cees
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