We just got the new Dexter Rubber ride Axles

Jim@Garagecleaning

Jim@Garagecleaning

banned
We just got the dexter rubber ride axles oil bath, not greased with oversized brakes installed today. No springs are needed with this new axle system. These babies are huge. The axles must weigh in at 500 LBS each. We decided to go with 17.5 inch rims 8 lug. We ordered them to handle 4,850lbs each rim. They are fully welded, not spot welded, and weigh about 50lbs each. I am having them powder coated in white as we speak.

The hoses are being rewired into a 3x3 galv. steel box like tubes, the length of the trailer. We decided to go with 2 more hydraulic jacks, 2 inch pipes, mounted in the rear of the trailer, for a total of 3 hydraulic jacks. These are huge as well.

Tires are stamped regroovable "H" rated. Tires weigh over 85 lbs each and are 16 ply with 125 PSI max air pressure. However, the are only rated a max speed of 80 mph. No speeding at night.

The fuel lines are being increased to handle the 2.2 mil boilers. We found that 1/4 inch was not sufficient for both the boilers hitting 300 degree temperatures, and the fuel requirements for our 3.3 liter diesel. We are going with dual pumps with (2) 3/8 braided SS fuel lines at 8 to 10 psi. ( We have not decided yet on the psi. Tests are needed to see what is needed to hit those 300 degree temperatures. These lines will be underneath the trailer as well.

Just a note, we have 4 temp gauges on our rig with two temperature thermostats. The thermostats say 302, however for us to reach those temperatures of 300 degrees at 3,000 to 4,300 PSI, we needed 1.1 million BTU's per pump for a total of 2.2 million BTU's, especially during the months of 48 degrees or less at night.

We have also daisy chained the system for dual batteries. Though we have a belt drive alternator with the diesel, we found the current 900 cranking amps was just not enough for the system.

The trailer sub frame had to be reinforced to handle the improvements.

We continually improve our equipment with the latest technology to meet or exceed the challenges needed for Garage Cleaning.
 
Do those axles have torsion bar suspension?

I'm surprised the 1/4" can't flow enough diesel.

How much 'testing' do you do with your boilers, swapping nozzles and changing fuel pressure? Do you have a little weather station to chart temp, humidity, altitude ...? With oversize gauges
 
Last edited by a moderator:
Jim@Garagecleaning said:
We just got the dexter rubber ride axles oil bath, not greased with oversized brakes installed today. No springs are needed with this new axle system. These babies are huge. The axles must weigh in at 500 LBS each. We decided to go with 17.5 inch rims 8 lug. We ordered them to handle 4,850lbs each rim. They are fully welded, not spot welded, and weigh about 50lbs each. I am having them powder coated in white as we speak.

The hoses are being rewired into a 3x3 galv. steel box like tubes, the length of the trailer. We decided to go with 2 more hydraulic jacks, 2 inch pipes, mounted in the rear of the trailer, for a total of 3 hydraulic jacks. These are huge as well.

Tires are stamped regroovable "H" rated. Tires weigh over 85 lbs each and are 16 ply with 125 PSI max air pressure. However, the are only rated a max speed of 80 mph. No speeding at night.

The fuel lines are being increased to handle the 2.2 mil boilers. We found that 1/4 inch was not sufficient for both the boilers hitting 300 degree temperatures, and the fuel requirements for our 3.3 liter diesel. We are going with dual pumps with (2) 3/8 braided SS fuel lines at 8 to 10 psi. ( We have not decided yet on the psi. Tests are needed to see what is needed to hit those 300 degree temperatures. These lines will be underneath the trailer as well.

Just a note, we have 4 temp gauges on our rig with two temperature thermostats. The thermostats say 302, however for us to reach those temperatures of 300 degrees at 3,000 to 4,300 PSI, we needed 1.1 million BTU's per pump for a total of 2.2 million BTU's, especially during the months of 48 degrees or less at night.

We have also daisy chained the system for dual batteries. Though we have a belt drive alternator with the diesel, we found the current 900 cranking amps was just not enough for the system.

The trailer sub frame had to be reinforced to handle the improvements.

We continually improve our equipment with the latest technology to meet or exceed the challenges needed for Garage Cleaning.
Click to expand...


I got new Boot's...:p
 
tomtucson said:
Do those axles have torsion bar suspension?

I'm surprised the 1/4" can't flow enough diesel.

How much 'testing' do you do with your boilers, swapping nozzles and changing fuel pressure? Do you have a little weather station to chart temp, humidity, altitude ...? With oversize gauges
Click to expand...


When we go out, we do check the temp and Humidity on-line for 3 am at the location we will be at. This will tell us what to expect performance wise from our units for that night. Altitude... we are at sea level 98% of the time. When temp and humidity is an issue, then we can adjust our equipment and techniques accordingly. If you really need to know how, call me.

We are going to run both burners under a full load in a few weeks. We are also changing out the fuel filters as well. We only have the problem with both burners on full with the engine under a full load. It could be a flow design problem or the filters. Either way, we are putting a performance 100 GPH set @ 8 psi for the boilers running continuously with the over flow back to the tank. The Diesel engine 3.3 liter turbo will have dual pumps as well with one pump installed near the 115 Gallon fuel tank, the other on the engine. The deicated engine pump will have 72 GPH at 5 psi.

Granted, 1 fuel pump should handle the load, however, I think the splitting of the fuel lines into 3 lines is the main problem, preventing an even flow to all stations. "T" hook into another "T" hooked into an elbow going up and through and around etc..

With this new slim line design, each station will have its own direct through dedicated line which will not be share with any other station. This will eliminate any possible flow problems. Yes, it will set me back about $600, but I need the performance. Just running at 85 or 90% of design specs is not good enough for us. We prefer 105/ 110% of design spec's.
 
Sounds awesome Jim, don't forget the pics.

Sometimes the teeing and bends does have an adverse effect on flow. Unless you have access to fluid flow programing, real world testing is the next best thing. you can't go wrong dedicated lines.

Here is an experience I have had with "T's" and plunger pumps:

I teed (3/8" "T") two 13 hp 3500 psi @ 4.5 gpm machines together to obtain greater flow. (trapped pressure unloaders with additional in-line high pressure check valves). The pressure guage on one of the pumps fluctuated while the other held steady (when run uncoupled from the other machine it was fine).
I think it was a combination of the fluid dynamics at the tee and the pulsation signature/interaction of the pumps.(the connection made was a "T" upside down, one pump coupled to the right the other from the top, the outlet to the left ).
Never tried it with a pulsation dampener on each machine (that should help). I think however a manifold would be the best way to join and split flow in conjunction with the pulsation dampeners.

Don't forget the rig pics and video, Jim
 
You must log in or register to reply here.
Back
Top