Gordon Gould
Super Member
- Joined
- Apr 1, 2007
- Messages
- 6,593
- Location
- NorthEastern, VT
- Tractor
- Kubota L3010DT, Kubota M5640SUD, Dresser TD7G Dozer
Another thing - and I may be all wet here, but it seems to me that a box blade can be self defeating when trying to cut a hard surface unless the rear blade is hindged. If the rear blade is fixed when you try to tip the box blade back to get a better cutting angle of attack on the front blade it rolls up on the rear blade and lifts the front blade so you loose more than you gain. If you tip the box bade forward so the rear blade does not impede the cut you are stuck with a steep angle of attack which might bounce and not cut very well. Most grading scrapers I have seen have there blades set at a shallower angle than you can get with a box blade when the rear blade is fixed.
Now in dirt or soft material none of this matters but from my experience trying to cut a hard surface works much better with a shallower angle. The blade angle of attack on my scraper is a little over 45*.
Now in dirt or soft material none of this matters but from my experience trying to cut a hard surface works much better with a shallower angle. The blade angle of attack on my scraper is a little over 45*.