Welding 1/2" 4140 bar

[wronghand]

Looks like you already got 'er done, cudo's!! For future reference tho:

Preheat 5-600 degrees, if possible weld with a nickel/chromoly rod (such as Arctec's Unicrom series) and cool slowly. If you can't find that rod, ER80S-D2 is a real decent option for MIG wire. In the mean time, have fun!!

WH

[blitzman]

4140

you can use duplex(2209) or super duplex(2507) with about 400f pre heat. It is very good for any sort of dissimilar welding

[wagspe208]

A couple hundred passes later... looks great!
Wags

Oh, yes.. that is exactly how is is supposed to ride. The front sponsons are there for the ride after the launch. Bottom 1/2 of the prop in the water.

[wagspe208]

Put some graphics on over the winter. Had to break up the red a little.

[blown99gt]

A couple hundred passes later... looks great!
Wags

Oh, yes.. that is exactly how is is supposed to ride. The front sponsons are there for the ride after the launch. Bottom 1/2 of the prop in the water.

crazy.. you gota have a big pair to do that stuff! ill stick to 4 wheels

[wagspe208]

crazy.. you gota have a big pair to do that stuff! ill stick to 4 wheels

All in what you get used to I guess. It is not a beginner ski boat... that is for sure.
Wags

[wagspe208]

A couple hundred passes later... looks great!
Wags

Oh, yes.. that is exactly how is is supposed to ride. The front sponsons are there for the ride after the launch. Bottom 1/2 of the prop in the water.

BTW... if you look at the back of the boat you see a black square behind the engine. That is the parachute. Look directly in line below that and you see a black piece with a shaft going forward. That is the strut.
SO, you can see it carries the boat weight plus a ton of side load. (from bottom half of prop)
Wags