Tow question for new member
2003 Tahoe z71 4wd with tow package. 1750 payload 7400 towing capacity. 1000 tongue wt with wdh. 2016 coachman Catalina 273bh. 4800 dry wt, 540 tongue wt. Am I ok here? Advice?
Forum Discussion
dw1gator wrote:Your data indicate a load of 100# was transferred to the TT's axles when WD was applied.
Its possible thinking back. But I dont understand what you are seeing. Thers a 20# difference on the front axle and a 60# difference on the rear. Where do you get the 240# ? And that brings up a question. Where should one stand while weighing?
This load is equal to about 13% of the indicated 760# tongue weight.
Based on assumed dimensions of:
TV wheelbase = 116",
ball overhang (longitudinal distance from TV's rear axle to ball) = 58",
and distance from ball to mid-point between TT's axles = 240",
a load transfer of 100# to TT axles would cause approximately:
255# to be added to the steer axle, and
355# to be subtracted from to the drive axle.
For the "WD engaged" weighing, the axle loads should have been approximately:
2900+255 = 3155# on the steer axle, and
3980-355 = 3625# on the drive axle.
The steer axle would have been about 3300-3155 = 145# lighter than when unhitched.
Instead, your data showed:
2880# on the steer axle (suggesting that 3155-2880 = 275# was "lost" from the steer axle), and
3920# on the drive axle (suggesting that 3920-3625 = 295# was "gained" by the drive axle).
On average, the data suggests that about 285#, which was on the steer axle pad during the "WD not engaged" weighing, showed up on the drive axle pad during the "WD engaged" weighing.
(Note: in the previous post, I assumed 240# was moved based on assumed dimensions for a Suburban rather than a Tahoe.)
The driver and all passengers should be in the same seats for all three weighings.
Some drivers use a short pole to press the call button while seated in the TV.
Ron
P.S. I think you're very wise to try to understand how your axle loads change when weight distribution is applied.
