Just pulled from the mold, my new double ended concrete sled it weighs 177lbs.
I modified this sled with plywood and sheet metal for the sled row.
New sled made from light weight concrete weighs in at 278 lbs. and now I use concrete blocks made from one 80 lbs. bag each of regular quickcrete the weights varry from 82 to 87 lbs. with a total weight at about 790 lbs. 800 with a small block I made from left over concrete.
Friction Coefficient
With this scale I came up with a friction coefficient on grass of about .53 after pulling 177, 277, and 302 lbs. After doing that I looked up the friction coefficient of car tires on concrete which is about .015. So with a little more research led me to the approximate weight of trucks so that I can attempt to prepare for truck pulls by pulling the concrete sled. Here it is.
|
Vehicle
|
Vehicle Weight
|
Force in Pounds to Move on Flat Concrete
|
Calculated Weight for Concrete Sled on Grass
|
|
1/2 ton
|
4500
|
67.5
|
127.358325
|
|
3/4 ton
|
7500
|
112.5
|
212.263875
|
|
2 ton
|
10400
|
156
|
294.33924
|
|
loaded 2 ton
|
30000
|
450
|
849.0555
|
|
empty semi and trailer
|
35000
|
525
|
990.56475
|
|
full 18 wheeler
|
80000
|
1200
|
2264.148
|
|
small jetliner empty
|
110000
|
1650
|
3113.2035
|
|
medium jetliner empty |
200000 |
3000 |
5660.37 |
The peak of 415lbf on the scale display occurred during Mike’s pull for 25′ at 362 lbs.
Related Posts
- Sled Drag 12-20-2020
- Sled Pull 9-13-2020
- Sled Pulling 6-23-2018
- Sled Pull 6-18-2017
- NWA Strongman Challenge Seated Truck Pull 7-23-2016
- Yoke Pulling 1-24-2016
- Yoke Pull 1-3-2015
- Yoke Pull 1-2-2016
- Sled Pull 12-5-2015
- Sled Pull 10-18-2015
- Oklahoma’s Strongest Man 2015, Truck Pull Event
- Sled Pull 8-16-2015
- Sled Pull 8-1-2015
- Sled Pull 7-5-2015
- Route 66 Strongman IV – Truck Pull 5-30-2015
- Sled Pull 11-15-2014
- Sled Drag 10-4-2014
- Sled Pull 7-5-2014
- Sled Pull 6-29-2014
- Sled Pulling 10-8-2013
- Sled Pulling 7-25-2013
- Sled Pull 5-7-2013
- Sled Pulling 5-1-2013
- Sled Pull 4-19-2013
- Sled Pull 3-14-2013
- Sled Pull 3-12-2013
- Sled Pull 3-7-2013
- Sled Pull 2-14-2013
- Sled Pull 2-7-2013
- Sled Pull 1-31-2013
- Sled Pull 1-24-2013
- Sled Pull 1-17-2013
- Sled Pull 1-3-2013
- Sled Pull 12-27-2012
- Sled Pull 12-20-2012
- Sled Pull 12-13-2012
- Sled Pull 12-6-2012
- Sled Pull 11-29-2012
- Sled Pull 11-20-2012
- Sled Pull 11-15-2012
- Tire Pull 11-10-2012
- Sled Pull 11-8-2012
- Sled Pull 11-1-2012
- Sled Pull 10-25-2012
- Sled Pull 10-18-2012
- Sled Pull 10-11-2012
- Sled Pull 10-4-2012
- Sled Pull 9-27-2012
- Sled Pull 9-20-2012
- Tire Pull 9-11-2012
- Tire Pull 9-5-2012
- Sled Pull 8-29-2012
- Sled Pull 8-22-2012
- Tire Pull 8-13-2012
- Tire Pull 8-6-2012
- Sled Pull 7-31-2012
- Tire Pull 7-23-2012
- Sled Pull 7-17-2012
- Sled Pull 7-10-2012
- Sled Pull 7-3-2012
- Sled Pull 6-26-2012
- Sled Pulling 6-5-2012
- Sled Pull 5-29-2012
- Tire Pull 5-26-2012
- Sled Pull 5-22-2012
- Sled Pull 5-14-2012
- Sled Pull 5-8-2012
- Sled Pull 4-3-2012
- Sled Pull 11-15-2011