On 27/06/18 12:14, AnthonyL wrote:
On Wed, 27 Jun 2018 10:13:44 +0100, Tim Lamb
wrote:
In message , T i m
writes
On Tue, 26 Jun 2018 09:05:15 +0100, The Natural Philosopher
wrote:
snip
My point is that once te tyre is on and deforming, that relationship has
no validity or meaning. I applies to circle only. And the flatter the
tyre is the less circular it is.
Snip..
So, the tread under the load point shrinks reducing the unloaded
(true) circumference to an effective circumference and the real
unloaded radius to an effective radius.
This might be the answer:-) The actual circumference varies with
pressure irrespective of the axle road distance.
sabino56's post helps clarify some of the misconceptions occuring in
this thread:
https://www.hotrodders.com/forum/how...er-101007.html
More idiots who cant do mecahniacval engineering
and in brief:
1) the diameter does change with load/pressure/speed
Ther is no such thiung as diameter
2) the effective radius does change with load/pressure/speed
No, only with pressure and then only a little
The effective radius has more affect on gearing than on diameter.
Its all crap.
--
"I guess a rattlesnake ain't risponsible fer bein' a rattlesnake, but ah
puts mah heel on um jess the same if'n I catches him around mah chillun".