Bush Hog repair question

[amhicks21]

Weld it and then weld plates along each side and it'll be stronger than new. No problem. I absolutely wouldn't only weld the crack though.

 

[rslee]

It’s slotted to slip over a key in the shaft. I’m going to try to get it off tomorrow. I can see what a local machine shop would charge to duplicate it vs welding. I don’t know if a local welder will touch it for liability reasons.

 

[Williy]

Its running at 100 mph shouldn't be flying

willy

 

[ROUSTABOUT]

It’s slotted to slip over a key in the shaft. I’m going to try to get it off tomorrow. I can see what a local machine shop would charge to duplicate it vs welding. I don’t know if a local welder will touch it for liability reasons.

For cash no ticket, out the door, they will.

 

[ROUSTABOUT]

I am a welder....but I wouldnt weld that.

I dont care what anyone says....but a weld is never as good as virgin metal. Sure the "weld" may be stronger.....but the heat affected zone of the bar is gonna become a new weak area.

Take it off. If its splined, see if you can match a replacement via other sources. If its a simple keyed hole, or even tapered and keyed....might be easier for a machine shop to replace

I would weld it all day long.

 

[ROUSTABOUT]

It’s slotted to slip over a key in the shaft. I’m going to try to get it off tomorrow. I can see what a local machine shop would charge to duplicate it vs welding. I don’t know if a local welder will touch it for liability reasons.

Don't fight that all day. Just loosen or take nut off bottom and go cut grass with it. Blades will fall off. That's the way I do all of them.

 

[sandman2234]

Good weld or bad weld, I wouldn't weld it, simply because you are still going to have the same issue that you had before. I would look into finding a stump jumper for it and upgrade your Bush Hog by doing that! I have used bush hogs without a stump jumper, but we don't have rocks in this part of Florida, so the biggest worry I have is trash thrown out by people.
David from jax

 

[masseyrider]

When it let go on a friends machine it took out his back tire. So he still had to get the repair part for his BH and replace a 16.9x24 loaded tire. No savings there.
He had repaired his to.
Weld was good but it broke beyond the weld. If you're adding metal pieces to strengthen the area you're throwing the balance out. Run an unbalanced blade and you'll destroy the rest of the machine in no time. If you can stand the vibration riding on the tractor.

 

[Slowpoke Slim]

Let's do a little math ... The blade is turning a 6 foot circle. Don't know the gear box ratio.. so lets say 1 to 1 then, the blade is turning at 540 rpm.
What's the tip speed ? 6x3.14x540=10,173.6 feet per minute.
How fast is that? 10,173.6 /5280 = 1.93 miles / minute
My car speedo reads miles/hour so...1.93x60=115.8 miles per hour.
I can then say... the approx 25 pounds of half blade holder plus attached blade is moving around 100 mph when it lets loose.

I won't be standing in it's path. Would you ?

Wild speculation.

The "tip speed" is irrelevant. The tip, is connected to the rest of the blade. The blade, is connected to the shaft. The shaft is likely half the speed of the pto output due to the gearbox on the brush hog.

No need to be so dramatic about it.

And since you completely ignored it the first time I posted, I WOULD GET A STUMP JUMPER!

Jeeze, some people's kids.

OP, have it welded, put a stump jumper on it, and move on.

 

[LD1]

2:1 is ratio for bush hog. Cheap off brand cutters are 1.5:1

not on a 6' cutter. 1.5:1 would be on the high end of blade speed....~16000fpm 1:1 would be on the lower end.

And "cheap" or "off brand" has nothing to do with gearbox selection. I had a 306 bushhog with a 1:1 gearbox