After years of using an old Sisis "Fibrano" scarifer which I bought for £35 some 20 years ago, decided it was time to get something a bit better as it's incredibly hard to push, all the debris flys foward making a right mess everywhere and the steel blades apparently do a much better job. Only ever used scarifier with the spring-tines rather than the steel "blades so a few questions I should really know the answer to after so many years!:
With the blades rotating to throw the debris out of the rear, does this significantly reduce the effort in pushing the machione forward? I would guess the rotating blades would pull the machine along to some extent.... hope so as I'm not getting any younger:)
I would have thought the blades would only be effective whilst they had a sharp "point" on them but surely this would rapidly be worn down to give a rounded profile? Do you need to sharpen them to maintain some sort of sharp edge or do they still work when they're rounded?
When are the blades actually "worn-out"? When they no longer reach the ground? When they're so rounded, they can't be sharpened any more?
I was looking at a Camon one which has some pretty good reviews.
Any answers gratefully accepted.
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you have vertually answerd your own question, i used to have a eliot with self sharpening blades you could adjust the hight of the machine to the requierd depth. but replacement blades are available if needed
How do "self-sharpening" blades actually work?
I have a scarifier for home use, I have used it on small jobs, some customers (although previously warned) are horrified to see the grass cut up even on the higher setting they still can freak out. I can answer the one question for sure, yes the push factor is a lot easier as you say, it pulls along. And on the easy rake setting does a fantastic thatching job. It's not an expensive one ,but is so much easier than using a scarifying rake and so much quicker.
Blades can be replaced and I prefer to sharpen them myself, not difficult just a little time consuming, but then again I'm a perfectionist when comes to tooling.
Hope it helps you decide if you haven't already.
I have used an Einhell GC-SC for the last three years as recommended by the chap from a lawn treatment firm working in a garden I maintain.
It is lighter, easier to use and less tiring than larger machines I have hired. It pulls itself forward quite easily and pulls out a lot of thatch. Ideal if you have several smallish areas to do but perhaps a bit slower in covering the ground on 1000sqm + lawns