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Discussion Starter #1
this happened with the suddenness of a broken shoelace. the aero car tumbled off the table, broke the prop, bent the front truck and broke the motor mount off the chassis. installed a new prop, fortunately these propellers are virtually disposable, a few dollars each for the plastic props. i am sure they are frequently broken on model planes.

THE CRASH

THE NEW PROPELLER

FULL LOAD TEST
 

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Darn, what was the old saying from the 70's " Speed Kills " although I think that saying was referring to another form of Speed.

Bill
 

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If you could fasten the metal weight under the car it would lower the center of gravity and allow faster speeds around curves. Same goes for the motor. Lowered with the edge of the prop just off the rails (no coupler, pusher only) and position the motor as close to the center of the car as prop clearance will allow.

Attaching some Neodymium magnets to that metal weight bar may provide some psuedo magnetraction - not sure if the effect is enough to help.

After that, think spoilers / air foils for additional downward force at speed.
 

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this happened with the suddenness of a broken shoelace. the aero car tumbled off the table, broke the prop, bent the front truck and broke the motor mount off the chassis. installed a new prop, fortunately these propellers are virtually disposable, a few dollars each for the plastic props. i am sure they are frequently broken on model planes.

THE CRASH
https://www.youtube.com/watch?v=a6aahTKOXGo

THE NEW PROPELLER
https://www.youtube.com/watch?v=2hqJUbbDAgA

FULL LOAD TEST
https://www.youtube.com/watch?v=CtPmNWfk6ZI
Ben;

The motor is not mounted pointing straight ahead. Is that a result of the accident. The angle, would put added force on the car in the direction of the derailment, other than centrifugal.

Dan
 

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Make another one with the propeller mounted higher, and make it a puller instead of a pusher. Also angle the motor down slightly to give added downward pressure Less likely to derail.

Dan
 

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Discussion Starter #8
Ben;

The motor is not mounted pointing straight ahead. Is that a result of the accident. The angle, would put added force on the car in the direction of the derailment, other than centrifugal.

Dan
the motor is angled approximately 7 degrees above parallel to the track to provide down force on the wheels. taken from the original rail zeppelin.
 

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Discussion Starter #9
Make another one with the propeller mounted higher, and make it a puller instead of a pusher. Also angle the motor down slightly to give added downward pressure Less likely to derail.

Dan
mounting the motor higher running as a tractor and it will derail in a curve at almost any speed. already did that experiment.
 

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Just a thought and posted in another of your prop threads a magnetraction truck off a postwar geep or switcher would help hold the rails if they do not tax the motor and make it over heat.
Those old ones really hold the rails at a fast speed.
When i take an old postwar engine off the shelf it takes with it the track that it sits on. ; )
 
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