Gents


I am constructing an early nose wheel brake to compare with the brakes Ed Kazmirski did design for my MAN Taurus.

One of the most positive advantages of the later Kazmirski brakes on this Top Flite Taurus is the distance between the brake shoe/friction and the shaft of the wheel. Only one system has more distance, Les Fruh Crusader. With the shoe on the outside surface of the tire. (see the earlier post)

Second point is the Kazmirski system is mounted on the both main wheels.

Sometimes the Taurus does lift a main leg/wheel while turning after landing with some groundspeed and wind. This more times did happen on a short strip. I am afraid this problem I will see often when I have a nose wheel brake.
The weight of the plane is on the main wheels and my Taurus is about 4 kg (9lbs) so in a straight line I can stop the plane is a short distance. I think that’s not gonna happen with a nose wheel brake.

Picture 1 a principle drawing of my Taurus brakes with the modifications.

I use ONE nylon thread from one brake to the elevator servo to the other brake.

I do look for the right hole to use on the servo to have the right brake force and the thread goes on winding around the axle of the servo. Now the brake forces left and right always are the same.

I use a pulley on the place in the Top Flite Taurus the dowel of the TE of the wing is used.

I do use nylon thread with a diameter I chose to have the right flexibility. When flying it must be possible to give normal maximal down rudder, but also I want the brake effect I need.

The nylon I can clip on the brake levers after mounintg the wing. The space between the winding is a little bit less than the diameter of the nylon.

To protect the wheel tires I do use brake shoes with glass reinforced epoxy plate with a bended surface. Without these brake shoes the brakes did destroy the tires in a relative short time. See picture 2

The third picture of the inside of the fuselage, the pulley and the nylon thread.
Picture 4 the outside, the difference between in and out is the result af many changes, just like the contest planes of Ed Kazmirski.

More to come.

Cees



Edit: the brake I did tell about was from Ralph Brooke Crusader, not Les Fruh! Post 488.

The micro swith "touch down detection" automatic does switch over my cruise control to "manual trottle" when I make the selection for that on my transmitter. For touch and go I continue the selection "cruise control".