I've forgotten after so many years. What's the relationship/impact of
Sprung weight versus Un-Sprung weight in a vehicle? How do they impact ride
quality?
o_o_o_o
Best Regards, /| ,[_____],
Jim, WP3JQ |ŻŻŻL --O|||||||O-
()_)Ż()_) ŻŻŻŻŻ )_)
EM60qk 30.447439N 086.628959W

 

On Wed, 3 Mar 2004 03:20:20 UTC "Drink" <drink@gnt.net> wrote:

> I've forgotten after so many years. What's the relationship/impact of
> Sprung weight versus Un-Sprung weight in a vehicle? How do they impact ride
> quality?

I developed a suspension system computer model (way back in the days
when everyone just had to have the latest abacus) which gave pretty
convincing evidence that the more unspung mass (in relation to spung
mass) the harsher the ride. Mathmatically, the energy tranferance
from the road to the unsprung mass served to amplify the effect on the
sprung mass as it was tranfered thru the suspension. That was a major
part of the reasoning used when they went to IFS in passenger cars.
We ran a bunch of tests on the track that pretty well tracked the
model - you would be surprised what the tar strips on a concrete
highway will do to you if hit at exactly the right speed.

--
Will Honea <whonea@codenet.net>

 

On Wed, 3 Mar 2004 03:20:20 UTC "Drink" <drink@gnt.net> wrote:

> I've forgotten after so many years. What's the relationship/impact of
> Sprung weight versus Un-Sprung weight in a vehicle? How do they impact ride
> quality?

I developed a suspension system computer model (way back in the days
when everyone just had to have the latest abacus) which gave pretty
convincing evidence that the more unspung mass (in relation to spung
mass) the harsher the ride. Mathmatically, the energy tranferance
from the road to the unsprung mass served to amplify the effect on the
sprung mass as it was tranfered thru the suspension. That was a major
part of the reasoning used when they went to IFS in passenger cars.
We ran a bunch of tests on the track that pretty well tracked the
model - you would be surprised what the tar strips on a concrete
highway will do to you if hit at exactly the right speed.

--
Will Honea <whonea@codenet.net>

 

On Wed, 3 Mar 2004 03:20:20 UTC "Drink" <drink@gnt.net> wrote:

> I've forgotten after so many years. What's the relationship/impact of
> Sprung weight versus Un-Sprung weight in a vehicle? How do they impact ride
> quality?

I developed a suspension system computer model (way back in the days
when everyone just had to have the latest abacus) which gave pretty
convincing evidence that the more unspung mass (in relation to spung
mass) the harsher the ride. Mathmatically, the energy tranferance
from the road to the unsprung mass served to amplify the effect on the
sprung mass as it was tranfered thru the suspension. That was a major
part of the reasoning used when they went to IFS in passenger cars.
We ran a bunch of tests on the track that pretty well tracked the
model - you would be surprised what the tar strips on a concrete
highway will do to you if hit at exactly the right speed.

--
Will Honea <whonea@codenet.net>