We all should know that the lower the Rolling Resistance the Less Wind required to get us moving. Conversely the Higher the wind the Faster we should be able to travel given low rolling resistance other benefits, I would imagine, would be the low rolling resistance should allow for, at speed, less side ways thrust against the Tire Traction even allowing higher speeds. My thinking is that as we catch up to the Generated Wind (The correct name escapes me at the moment). With lower RR and ST should be converted into Axial Speed. There is plenty of room for discussion here.

Currently

Schrodinger's Cat has an initial starting resistance of 1Kg falling to moving RR of about .75Kg

Occum's Razor has .75Kg and moving RR of between .25 and .5Kg

Testing took place with a set of light weight Fishing Scales on Smooth Cement Floor. The reason for the difference between machines is probably due to Configuration and Tire pressures.
Ron

This is a great test to perform for Camp Fire Discussions

Apparent Wind is the term you were after..

When you check the rolling resistance of a yacht is should be loaded with some weight, even a couple of bags of sand or concrete in the seat will change the figures drastically.
One of the reason to stack the yacht with weight is the axle flex, the camber on the wheels increase and place a twisting motion on the bearings that isn't there on an empty yacht / frame. An empty yacht spreads the weight across the 3 wells equally where as a weighted yacht has much more weight loaded on the rear axle.

Although doing the measurements done with a person are great and VERY representative, some static weight (bags of sand etc) might be better as it is then repeatable next week, next month or next year with different wheels or bearings etc.
You never know your mate might give up drinking beer and slim down .... then your data is useless.

I know the feeling, Thought someone pinched aus230, rolled out of the shed . I found it down the padock

some beasts have just got to run, others can never be tamed some are just milkers
what was the topic?
a more relevant test is to get the rolling chassis set up on your sailing surface and push it up to say 10kph then time how long it takes to stop,then try it with different tyre pressures,wheel layover angle etc.
a great way to spend a windless day,with a beer in hand

Thats the good part about the design of the LLMini.

By unthreading and using the sheeting rope. feed it through the 25mm square, horizontal steering bar (with the pedals welded to) to about halfway along the ropes length. Grab both of the ends, now you can now tow it and steer it at the same time when the wind drops out.

Nikrum said...

So! I managed to get the Razor out on Sumerset Beach this arvo and had a few nice runs n skids n stuff.. It was all very nice I must say even got to run on 2 at one stage until I got very wet. 2 Holes in the beach full to brimming, axle deep and I managed to hit both of the B$%#^ Things with an almighty SPLASH and it wasn't a pleasant thing in a cool wind. With clothing soaked and covered in sand I had to retire[}:)]
Ron

You've said it yourself Ron; Pics, or it didn't happen