Chevy truck bumper build

[deejaaa]

Originally Posted by oil pan 4

..... bumper was already to big to drag back and forth to work so I built a tig welding machine. With that problem solved back to work.............

no one asked so I will. what? GIVE MORE DETAILS PLEASE.

Originally Posted by oil pan 4

I don't see the point of leaving the winch out side, attached to the front of the vehicle all the time to get weathered, wet, dirty, exposed to road salt, stolen when you rarely need it or if you need it to pull you backwards...............

I have some of these collecting dust. I can send you as many a 4 if wanted for free. 6325G1 | SB Series 2 Way Male/Female 175A Panel Feed Through Set | Anderson Power Products

bumper looks good to me. kind of ambulance/wrecker style.

[oil pan 4]

I too like SB175 connectors I have standardized on them for everything that uses high current DC power. LiFePO4 power packs, winch, 2000 watt power inverter all use them. I bought a bag of 10 of them before the winch and power inverter build plus I made SB175 jumper cables so most of those 10 are gone.
Let me know what you want for them.
You may be able to ship them all first class mail, which tops out at 13 ounces.

I plan to add more SB175 connectors to make DC power supplies interconnectable and make a 2 gauge SB175 extension cord or 2.
This little rig needs one too because it has a big battery that could be used to run the 2000 watt inverter or to jump start.
http://ecorenovator.org/forum/solar-...-hybrid-2.html

I had a small 120 volt craftsman AC only stick welder that I bought and it was alright, but knew it could be better with some work, so I cut off the cheap welding leads and put welding lead receptacles on it so I could use any of the welding leads I already had made for my other machines, ducted the fan, rewired it to run the fan with the transformer off and put a more awesome flanged L6-30 plug on the machine and power factor corrected it so it didn't flip a 20 amp breaker as much. Then it could weld substantially longer with out over heating and with out flipping a 20 amp breaker as often.
Then I converted it to DC with some rectifiers and scrap yard inductors.
It worked even better as a DC welder.
Then all I had to do to make it into a tig was plug a tig torch into it and hook up to argon.

Bottom of page 3:
Eco mod my welder - Page 3 - EcoRenovator
I don't have a picture of the fanged receptacle on there but I will add one.

[deejaaa]

like i said, i will give them to you. i will see how many i have, keep a couple and send the rest. i will let you know.

[oil pan 4]

Going to cover the heat exchangers with 13 gauge, 1/2 inch expanded 304 stainless.

[aerohead]

If you have a chance to drive it at highway speed in a stiff crosswind/gust,see if you feel some understeer.

[oil pan 4]

I was not sure how I wanted to finish the out side ends of my bumper but now I have a few ideas.

I was driving along and saw a tractor trailer with a trailer side skirt that had vortex generators cut into it where it terminated just forward of the rear wheel and thought that's it. They are functional and look cool.

So now I just need to figure out the fine details to cut in the vortex generators.
I would like to take these edges:

And cut them on to the trailing edge of the bumper.


On the tractor trailer I saw the VGs appeared to be about 90 degrees and about 2 inches. The ones in the picture appear to be a little less than 90 degrees. The ones I see on tractor trailers are 90 degrees or more.
Does any one know specifically what size and angle I could be cutting?

[aerohead]

They would have to be analyzed specifically for this application,and would be a function of size,local Reynolds number,and boundary layer thickness.
*aerodynamicists are fetching an average $48.89/hour
*drafting services are $100-$120 / hour
*wind tunnel testing: $480-$500 / hour
*you might just have fun,slam something together,and be willing to live with the difference.You'd never see a difference at the gas pump.

[oil pan 4]

It doesn't have to be fighter jet perfect.
I just want to copy the closest thing I can find that is used for this application, in this case a tractor trailer side skirt and reproduce it for my application in a way that might work best.

Ran into another problem. When I go to weld the #13 expanded stainless to the .062 wall pipe it will burn up. It will "sugar" the back side of the weld.
So I needed something that could apply a tremendous amount of energy very quickly to a very small area. So I built a 2,000+ amp spot welder out of 4 microwave oven transformers. This should provide full metal to metal fusion over a 1/4 inch heat up then cool down the area before the metal can get hot enough for long enough to sugar.

[deejaaa]

Originally Posted by oil pan 4

I too like SB175 connectors ........
Let me know what you want for them.
You may be able to ship them all first class mail, which tops out at 13 ounces.
......

sorry for the long delay. i have 4 pieces that will make 2 sets. thought i had more but realized only 1 piece was in each box. if still interested i will send them to ya.

[oil pan 4]

Yeah, 4 more sets sounds great, last time I ordered some I should have ordered at least 2 more sets.