Brush Hog mods

   / Brush Hog mods #91  
I wonder if there's any standard among the various (US) manufacturers when it comes to the 90* gearbox output shafts?
I don't recall ever getting into removal of any "T" bar or integrated stump (US blade type mower) pan but a splined output shaft is something that's in my memory... somewhere and that would take some advanced machining to replicate the "chain hub" shown by ptsg's pictures.
I believe most everyone following this is now convinced that it's probably a simpler and easier to maintain this type of machine than one with blades with the exception of grass cutting or pasture maintenance.

I should've clarified the splined sleeve is supplied with the gearbox in most cases. It would've to be welded on the hub that holds the chains.

Here is a picture for clarification:

1690054199630.png


Some places sell it like that, others sell it complete with the hub already made and ready to go. Pretty much a bolt on deal.

Also, for pasture mowing, that you know there isn't rocks or weird objects hiding, blades all the way. You can go faster and use less HP/fuel but this is almost the perfect place to mow, which won't happen most of the times.

Over here, if a pasture is that good, then it's cut and turned into bales. Usually small and round bales.
 
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   / Brush Hog mods #92  
Got a link for one?
Sure. All in Portuguese though.


 
   / Brush Hog mods #93  
Sure. All in Portuguese though.


Thanks

Anyone know of a US place that sells the adapter for the chains that mates to a rotary cutter gearbox?
 
   / Brush Hog mods
  • Thread Starter
#94  
Thanks

Anyone know of a US place that sells the adapter for the chains that mates to a rotary cutter gearbox?
That has been the million dollar question since this thread started. :)
 
   / Brush Hog mods #95  
I would imagine there is nothing like this in the US, unless it's homemade, but I'm an entire continent away with a big pond in between so I have no idea what's available there. 😅

I've seen at least a video or two, of people using it in Canada though.

Anyway, got some closer pictures of the hub. Picture #1 is one of the pins. Picture #2 is a terrible picture of the pin in place, kinda hard to see. The rest is different views on the hub. Last picture shows how high this cutters can go, which is really helpful on tall brush and mowing against embankments.


IMG_20230722_151923.jpg
IMG_20230722_152455.jpg
IMG_20230722_152458.jpg
IMG_20230722_152511.jpg
IMG_20230722_152529.jpg
 
   / Brush Hog mods #96  
In the 4th picture, it looks like the pin on the right is not engaging the bottom hole very well if at all? Do you need to replace the pins from time to time?
 
   / Brush Hog mods #97  
If it can be sourced somewhere, you would think you can import it into the USA. I’ve bought forestry gear from Canada. No issues getting it here. A few phone calls to find out.
 
   / Brush Hog mods #98  
In the 4th picture, it looks like the pin on the right is not engaging the bottom hole very well if at all? Do you need to replace the pins from time to time?
Good catch. I'll need to check that out ASAP. There is something funny going on there, even though I used it after taking the pictures without any issues.

The pins do need to be replaced eventually. Mine wore out about 1/3 of the diameter of the pin in about 300 to 320 hours of use. Knowing myself, I'll probably fill it with weld and run it some more.

It really shows that with any type of implement, it's important to do a walk around and taking a closer look at stuff like this every once in a while.

I checked a older picture from when the cutter was newer and you can see both pins.

IMG_20190920_174822.jpg
 
   / Brush Hog mods #99  
The pins wear out in a rotary cutter too.

In one of mine, I've had to fill weld the groves in the pins where the blades wear into them. The holes in the blades will elongate too.

SR
 
   / Brush Hog mods #100  
The pins wear out in a rotary cutter too.

In one of mine, I've had to fill weld the groves in the pins where the blades wear into them. The holes in the blades will elongate too.

SR
Brush cutters take a lot of beating. This is just regular wear and tear.
 

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