briandantz
Member
- Joined
- May 16, 2015
- Messages
- 46
- Location
- stillwater, ny
- Tractor
- 2013 Kubota L3200 HST w FEL quick attach bucket, forks and BH77 Hoe with Hydro Thumb
Yes, That's Paul from Youtube. He has a repair shop up in Newfoundland and has made tons of mods to his tractor, truck, pressure washer, other tractor, mods to mods, and mods to mods that needed mods.
Look at the picture. The concept is simple enough. people have been doing it for years on excavators. i can tell you first hand that a track hoe with a thumb and a bucket changer is very cool. Also cool is when you add a wrist and a 36" ditching bucket so you can do ditch clean-out and final landscaping.
there are some nasty side effects you need to be aware of.
Geometry... when Paul built his, he rotated the pin and hook positions out away from the dipper while maintaining the "tooth" position and not lengthen the bucket radius.
Look specifically at the ripper photo. imagine the tip of the tooth as the center of the circle. Rotate the ripper counter clockwise back towards the original attachment pins. he has them pretty much lining up and here's why.
1) When the radius from the pivot to the bucket gets longer, the curl force diminishes.
2) The longer the teeth get away from the pin, the closer they get to the boom when you boom back and curl up for storage. on industrial machines, the buckets can and will hit the boom with the big quick attach couplers
3) By doing it this way, he reduced how far you can uncurl. does't affect you until you are digging DOWN and you can dig the back of the hole anymore because you limited how you can uncurl by 10 degrees or so.
4) It DOES fix the pivot point issue with Kubota's OEM thumb. Their thumb rides on the same pin as the bucket. when you close the thumb, you sometimes squeeze out your victim because the inside closes tight but the outside is loose. (like a pair of scissors instead of a pair of channel locks)
Yes a changer is cool. On a bx24? Seems inappropriate.
Look at the picture. The concept is simple enough. people have been doing it for years on excavators. i can tell you first hand that a track hoe with a thumb and a bucket changer is very cool. Also cool is when you add a wrist and a 36" ditching bucket so you can do ditch clean-out and final landscaping.
there are some nasty side effects you need to be aware of.
Geometry... when Paul built his, he rotated the pin and hook positions out away from the dipper while maintaining the "tooth" position and not lengthen the bucket radius.
Look specifically at the ripper photo. imagine the tip of the tooth as the center of the circle. Rotate the ripper counter clockwise back towards the original attachment pins. he has them pretty much lining up and here's why.
1) When the radius from the pivot to the bucket gets longer, the curl force diminishes.
2) The longer the teeth get away from the pin, the closer they get to the boom when you boom back and curl up for storage. on industrial machines, the buckets can and will hit the boom with the big quick attach couplers
3) By doing it this way, he reduced how far you can uncurl. does't affect you until you are digging DOWN and you can dig the back of the hole anymore because you limited how you can uncurl by 10 degrees or so.
4) It DOES fix the pivot point issue with Kubota's OEM thumb. Their thumb rides on the same pin as the bucket. when you close the thumb, you sometimes squeeze out your victim because the inside closes tight but the outside is loose. (like a pair of scissors instead of a pair of channel locks)
Yes a changer is cool. On a bx24? Seems inappropriate.
