trailer sway mitigation TSM

wrote on 12/21/2019 6:39 AM:
Note that Nelson Funston's Trailer Dynamics paper was written in 1987. I would bet that tire technology has changed somewhat in the intervening 32 years. Still, the paper is interesting and informative.

The steel belted radial was well-established in 1987. I've discussed tires,
particularly trailer tires, with Nelson many times since then, including recently
about the specific tires to get for my trailer. He has never mentioned any changes
to tire technology that would affect us, nor have I heard of anything.

Also, there is nothing in his paper that depends directly on tire technology. It's
the lateral stiffness of the tire tread that is important; then and now, radial
tires have significantly more stiffness that a comparable bias ply tire.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

On Saturday, December 21, 2019 at 7:56:08 AM UTC-8, Eric Greenwell wrote:
wrote on 12/21/2019 6:39 AM:
Note that Nelson Funston's Trailer Dynamics paper was written in 1987. I would bet that tire technology has changed somewhat in the intervening 32 years. Still, the paper is interesting and informative.

The steel belted radial was well-established in 1987. I've discussed tires,
particularly trailer tires, with Nelson many times since then, including recently
about the specific tires to get for my trailer. He has never mentioned any changes
to tire technology that would affect us, nor have I heard of anything.

Also, there is nothing in his paper that depends directly on tire technology. It's
the lateral stiffness of the tire tread that is important; then and now, radial
tires have significantly more stiffness that a comparable bias ply tire.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

Light truck tires are not available in a size that fits Cobra trailers. Found that out this last summer when I had to replace a blown tire.

Tom

On Saturday, December 21, 2019 at 5:51:26 PM UTC-8, 2G wrote:
On Saturday, December 21, 2019 at 7:56:08 AM UTC-8, Eric Greenwell wrote:
wrote on 12/21/2019 6:39 AM:
Note that Nelson Funston's Trailer Dynamics paper was written in 1987.. I would bet that tire technology has changed somewhat in the intervening 32 years. Still, the paper is interesting and informative.

The steel belted radial was well-established in 1987. I've discussed tires,
particularly trailer tires, with Nelson many times since then, including recently
about the specific tires to get for my trailer. He has never mentioned any changes
to tire technology that would affect us, nor have I heard of anything.

Also, there is nothing in his paper that depends directly on tire technology. It's
the lateral stiffness of the tire tread that is important; then and now, radial
tires have significantly more stiffness that a comparable bias ply tire..

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

Light truck tires are not available in a size that fits Cobra trailers. Found that out this last summer when I had to replace a blown tire.

Tom

The curious thing in the LT vs ST debate is WHY would a tire company design a BETTER trailer tire intended to be put on a truck than a tire SPECIFICALLY and EXCLUSIVELY to be used on trailers? Just doesn't make any sense. Note that is a different question as to is it ok to use an LT tire on a trailer.

2G wrote on 12/21/2019 6:23 PM:
On Saturday, December 21, 2019 at 5:51:26 PM UTC-8, 2G wrote:
Light truck tires are not available in a size that fits Cobra trailers. Found that out this last summer when I had to replace a blown tire.

Tom

The curious thing in the LT vs ST debate is WHY would a tire company design a BETTER trailer tire intended to be put on a truck than a tire SPECIFICALLY and EXCLUSIVELY to be used on trailers? Just doesn't make any sense. Note that is a different question as to is it ok to use an LT tire on a trailer.

LT tires make fine trailer tires; after all, they can handle the more demanding
life on a truck. But! They cost more - often much more - than a trailer tire, due
in part to the much higher speed rating, and that's why the tire companies make
trailer tires. Who would buy a $124 LT tire when they can get an ST tire for $80?

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

Because it's cheap insurance?Â* (Cheap glider pilots notwithstanding...)

On 12/21/2019 9:27 PM, Eric Greenwell wrote:
2G wrote on 12/21/2019 6:23 PM:
On Saturday, December 21, 2019 at 5:51:26 PM UTC-8, 2G wrote:
Light truck tires are not available in a size that fits Cobra
trailers. Found that out this last summer when I had to replace a
blown tire.

Tom

The curious thing in the LT vs ST debate is WHY would a tire company
design a BETTER trailer tire intended to be put on a truck than a
tire SPECIFICALLY and EXCLUSIVELY to be used on trailers? Just
doesn't make any sense. Note that is a different question as to is it
ok to use an LT tire on a trailer.

LT tires make fine trailer tires; after all, they can handle the more
demanding life on a truck. But! They cost more - often much more -
than a trailer tire, due in part to the much higher speed rating, and
that's why the tire companies make trailer tires. Who would buy a $124
LT tire when they can get an ST tire for $80?


--
Dan, 5J

2G wrote on 12/21/2019 5:51 PM:
On Saturday, December 21, 2019 at 7:56:08 AM UTC-8, Eric Greenwell wrote:
wrote on 12/21/2019 6:39 AM:
Note that Nelson Funston's Trailer Dynamics paper was written in 1987. I would bet that tire technology has changed somewhat in the intervening 32 years. Still, the paper is interesting and informative.

The steel belted radial was well-established in 1987. I've discussed tires,
particularly trailer tires, with Nelson many times since then, including recently
about the specific tires to get for my trailer. He has never mentioned any changes
to tire technology that would affect us, nor have I heard of anything.

Also, there is nothing in his paper that depends directly on tire technology. It's
the lateral stiffness of the tire tread that is important; then and now, radial
tires have significantly more stiffness that a comparable bias ply tire.



Light truck tires are not available in a size that fits Cobra trailers. Found that out this last summer when I had to replace a blown tire.

Yokohama Supervan Y356 LT195/75R14 fit my ASH 26 E trailer. I got them from
Tirerack.com, and they still carry them. Walmart has them, too, but you might have
to order them first if you want to pick them up locally.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1