Pretty cool ,,, I'm not sure my welding abilities are up to par ,, to trust spinning a carbide chunk of metal around at 5000 plus RPM's ,,
There's no welding on the cutter head. I used a sprocket flange with 2012 taperlock bushing. The sprocket flange is welded to the taperlock from the factory but those sprockets come stress relieved and heat treated and I have never seen one break at the weld. Then the taperlock sprocket is bolted to the cutter head with five 3/8 grade 8 bolts.
I'm thinking 670cc 22hp harbor freight predator engine with zoomies. The oil cooler is pointed the right direction, the muffler is pointed the right direction too for me. The key start isn't ideal but appears easy to relocate. Be about +10hp. What you think?
Are you presently using the 6.5 horse motor ?? If so ,, I'd expect an extra 16 horses to make 1 helluva difference. Let us know when you make the change.
Another 10 horses can't hurt ,,, I've not heard anything bad about them Predator motors from the few folks that have used them .
Appears that a predator engine will be sufficient. I had looked at the display one at harbor freight, the oil cooler positioning is ideal for me. Skip to 15 minutes to see it get stripped down a bit. I was curious about the air filter, it seems acceptable, a cyclone air cleaner like a Donaldson would be ideal.
If I was going to build a small car grocery-getter it would be a diesel with a hydraulic pump with hydraulic motors on a rear axle driven car or a single hyd motor on the drive shaft to rear wheel drive. Probable get 90 miles to the gallon?
Reminds me of this concept from a few years ago, F-150 that gets 40+ mpg. Ford F-150 Used to Develop 40 MPG Hydraulic Hybrid Powertrain | PickupTrucks.com
The only non exotic, liquid fueled setup proven to get around 100mpg with reproducible results: PICS! Econo Car conversion to Kubota Diesel. 1997 Geo Metro, Kubota D1005 3 cylinder - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com Robot cantinas future Kubota powered Honda insite will probably get around 100mpg since it's more aerodynamic than a metro and will weigh about the same.
I was thinking of taking a little nissan 4x4 truck i have and put a little 3-4 cyl diesel tractor motor in it . Not if a turbo would be needed , and would have to figure out the clutch / tranny hookup . But then I dont have time for anymore projects ,,, anyone know if this would be possible or feasible .
Wouldn't it be cheaper to use a chainsaw and be done with it, trash the bar and the chain doing the job and buy a new set for a fraction of the price of the stump grinder.
The stumps I get rid of are usually kiln dried hard wood. A chain saw would be very slow. My Honda GX390 powered stump grinder has trouble grinding through them and it has double the power of my bigger chainsaw. I use a 60cc saw and a carbide chain just to chop them up. The amount of damage the chainsaw does pales in comparison to the stump grinder. The chain of the chain saw strikes the surface about 1,200 to 1,500 times per minute it's and it's cutters take out little bites. The stump grinder does more like 20,000 strikes per minute and takes out big chunks.
The gx390 may be sufficient. I replaced the muffler with a 1 inch straight pipe about 2 feet long on it and it has much more power.
I've got a GX390 on a walk behind Billy Goat bush hog ,, it's a vertical shaft ,, but have you had any problems with the fuel shutoff valve leaking. I've got less than 2 hours on the motor ,, but it leaks out of my fuel shutoff ,, it's got a thick rubber grommet style gasket in there ,, and for some reason ,, it pours fuel out . I'll probably just buy a carb rebuild kit ,, but was just asking if you've had any problems with yours .
