Axle Weights

LSolheim

Member
After 13 years and with Amphi's odometer now having rolled past 103,000 miles, I am beginning the transition to an enclosed trailer versus flat towing, for at least major trips. I have had no issues, but as I scraped the mud off after the last two days of returning from Lake Havasu in a virtual monsoon (I think some "barn-find" cars have been cleaner) the value of the vehicle and the thought that there is more action in gathering-motel headquarters than at a the campground across the lake were the final deciding factors.

I have figured out most of what I am looking for in a trailer, but am still looking to identify actual vehicle weights. There is no local scale so I am looking to find if anyone has weighed and determined actual front and rear axle loading?

The curb weight of the Amphicar is about 2,400# and the "permissible" axle loads are listed as 1,130# (F) & 1,826# (R), but I am looking for actual axle loading with the car unloaded. Knowing these weights, with the Center of Gravity 50" aft of the front axle (and about 33" forward of the rear axle), I can calculate the needed position of the car over the trailer axles to control trailer tongue weight.


Thanks (& Happy Thanksgiving)! --Larry
 
Last edited:

LSolheim

Member
I was able to answer my own question with the help of the local potato distributor.

With 1/2 tank of fuel, Amphi weighed in at 2,380#. Putting the jacking point (balance point) on the edge of the scale, the front end was 900# and the rear wheels were 1,480# when I moved to the other end of the scale. So with the empty trailer tongue weight at 10% (230#) I just need to insure the jacking point is about 2-1/2" behind the center point of the trailer axles to hold the loaded toungue weight at about 530#!

--Larry
 

Gr8cobbler

New Member
Posted: Fri Aug 31, 2012 4:10 pm Post subject:


Here is a trick I just used to get the actual weight at the wheels. I used a 2X4 marked at 1 foot and at 3 foot, a block, short length of pipe and a bathroom scale. Putting the pipe on the scale at the 3' mark and the car on the 1' mark with the block as close to the zero end of the 2x4 as you can get. Take the reading on the scale and multiply that number by 3. You should have the weight at the wheel and a scale that still works.

I had 10-15 lbs of difference at each rear wheels and about the same diffrence at the front. I attributed that to the slight changes in tire and pipe placement on the board. When I added all the wheel weights I was within 20 lbs of what the total car clocked in at on the scale (the local scrapyard lets me weigh for free). You can use the results to calculate the weight ratio too, just divide the weight at the front or rear from the total.

I thought it was a pretty slick trick, guess folks use this method to measure tongue weight on trailers too.
 
Thread starter Similar threads Forum Replies Date
Jon March Amphi rear driveshaft & axle detail - Youtube video General Amphicar Discussion 3
SNOWBIRD Rear Axle repairs General Amphicar Discussion 1
Jon March Rear driveshaft & axle-assembly photo General Amphicar Discussion 0
Jon March Axle tube bushings - a followup question... General Amphicar Discussion 0
LSolheim Rear Axle Nut General Amphicar Discussion 2
Jacques B. Amphicar Axle shaft removal from the gearbox General Amphicar Discussion 5
rhysaccess Rubber front axle grease caps? General Amphicar Discussion 3
A Rear Axle U Joints - Bilge Pump Kit General Amphicar Discussion 0
S Rear Axle U-Joint? General Amphicar Discussion 6
cigarman Axle Tunnel repair (welded in wrong) General Amphicar Discussion 4
J Rear axle cover replacements ? General Amphicar Discussion 14
A Amphicar Rear Axle U-joints Late Style General Amphicar Discussion 0
A Rear Axle U-joints Now On Ebay General Amphicar Discussion 6
H Axle oil seals. General Amphicar Discussion 2
auburnamphi Rear Axle General Amphicar Discussion 1
Midwest Amphicar getting ready for some axle suck in Sabula General Amphicar Discussion 0
S Rear Dust / Grease Axle Caps General Amphicar Discussion 8
T Axle Zerk Fitting??? General Amphicar Discussion 3
T Axle u-joints General Amphicar Discussion 3
Midwest Amphicar Axle install General Amphicar Discussion 9
D Kens front axle rubber caps - GET THEM ! General Amphicar Discussion 4
M FRONT AXLE BEARING GREASE CAPS General Amphicar Discussion 0
C RUBBER AXLE CAPS !!! General Amphicar Discussion 24
J AXLE CAPS !!! General Amphicar Discussion 0
D axle suck soon very soon General Amphicar Discussion 0
A Axle tunnel repair General Amphicar Discussion 0
B Rear Swing Axle Needed General Amphicar Discussion 1
R double axle trailer General Amphicar Discussion 1
T Shocks, axle boots General Amphicar Discussion 1
G Axle question General Amphicar Discussion 9
G rear axle. General Amphicar Discussion 1
C Rear Axle rebuilding General Amphicar Discussion 1
A REMOVING AXLE HOUSING WITH AXLE General Amphicar Discussion 1
K Axle sliipiing out of tranny General Amphicar Discussion 0
D axle- river General Amphicar Discussion 0
D help with axle idea ---- Great book General Amphicar Discussion 2
C Axle shaft removal General Amphicar Discussion 4
C rear axle boot General Amphicar Discussion 4
E Axle Tube Greasing General Amphicar Discussion 0
E Rear Axle Spline Compression Springs General Amphicar Discussion 2
E Axle Nut & Washer Sequence General Amphicar Discussion 0
E Axle Nut Torque General Amphicar Discussion 0
D Rear Axle Tunnel To Tranny Boots General Amphicar Discussion 3
W TIP; Split axle reassembly. General Amphicar Discussion 0
E Rear Axle Design General Amphicar Discussion 1
R single axle General Amphicar Discussion 0
R Axle success General Amphicar Discussion 0
A trouble with axle General Amphicar Discussion 0
S Front Axle Oil Seals General Amphicar Discussion 2
K rear axle arms, prop shaft, 66 lincoln General Amphicar Discussion 0
Similar threads


















































Top