J2807 for smaller vehicles

45Ricochet wrote:

goducks10 wrote:
With 340HP and 800TQ my pedal never sees the floor:)

LOL I was thinking the same thing.
Might I suggest that 5% comment be something like " less than 5% of diesel RV pullers run WOT and a much higher percent with a gasser run WOT" :W

x2
bumpy

goducks10 wrote:
With 340HP and 800TQ my pedal never sees the floor:)

LOL I was thinking the same thing.
Might I suggest that 5% comment be something like " less than 5% of diesel RV pullers run WOT and a much higher percent with a gasser run WOT" :W

I'm one of the 5% club. I know what vehicles sound, feel, drive, and therefore look like when doing so. I know what my passengers say when I make the engine go over about 2/3 of redline in any vehicle.

Mountain passes while towing, maybe 20% of passenger vehicle owners use WOT. But much of the population never tows up mountains ever!

goducks10 wrote:
With 340HP and 800TQ my pedal never sees the floor:)

Hey don't forget those 10 ponies. Its 350hp!

ScottG wrote:


I'd have to agree with most of this with a clarification.
I suspect less than 5% of drivers run WOT the entire time climbing mountain passes. Most of feel that's just abuse.

I would guess that more than 5% of the drivers run WOT during some/most of the entire time.
bumpy

With 340HP and 800TQ my pedal never sees the floor:)

APT wrote:
My opinion is the SAE J2807 is a waste of time and money. It is primarily a wide open throttle performance based standard, although braking is also included which is less important IMHO given trailer brake variances. Less than 5% of drivers have ever used WOT.

I'd have to agree with most of this with a clarification.
I suspect less than 5% of drivers run WOT the entire time climbing mountain passes. Most of feel that's just abuse.

APT wrote:
Less than 5% of drivers have ever used WOT.

:h

What makes you think that? I see and hear a high percentage of drivers every day with their foot to the floor. Portland freeways coming out of downtown requires pretty much merging from a stop onto a 6.5% uphill grade with curves. Every truck and trailer combination is giving it all they got. When I used to drive truck for a paint manufacture, I think our trucks spent more time at WOT than not. I could only manage about 20 MPH coming out of downtown loaded, and with the UD cabovers, I'd have to stop and the zoo on hot days to pop the cab forward and let it cool, so I could make it to the top of the hill.

Some of our remote mountain passes like Cabbage Hill or the Siskiyous means WOT for 10+ minutes at a time! If you have an RV, you want power. Otherwise you'll be stuck in the right lane with the triple-trailers going 15 MPH.

My opinion is the SAE J2807 is a waste of time and money. It is primarily a wide open throttle performance based standard, although braking is also included which is less important IMHO given trailer brake variances. Less than 5% of drivers have ever used WOT.

This is a dangerous question to ask. For most vehicles, the actual tow rating should be based on the overall setup (WDH, reinforced hitch) and other factors such as the frontal area of the trailer you are pulling. Just giving a canned answer in pounds never has made any sense to me because you have so many things to consider. You need to consider the big picture because weight is not everything. All minivans are miraculously rated for 3500 lb max, which cannot be true.

Flame on.