|
|
Post by sawnami on Oct 13, 2018 13:10:53 GMT -5
Nothing to it. đ  |
|
|
|
Post by undee70ss on Oct 13, 2018 15:16:32 GMT -5
And what are the odds of finding any new chain like that?
|
|
|
|
Post by stillsawing on Oct 13, 2018 15:42:46 GMT -5
What years did chipper chain supersede scratcher?
|
|
|
|
Post by sweepleader on Oct 13, 2018 17:56:43 GMT -5
Before 1964, that's as much as I am sure of. I think it was released to the market in the mid 1950's but I don't have an exact year.
That diagram is interesting. I had thought there were 5 different teeth, that looks like only 4.
|
|
|
|
Post by sawnami on Oct 13, 2018 18:21:48 GMT -5
And what are the odds of finding any new chain like that? What years did chipper chain supersede scratcher? Before 1964, that's as much as I am sure of. I think it was released to the market in the mid 1950's but I don't have an exact year. That diagram is interesting. I had thought there were 5 different teeth, that looks like only 4. You don't see new chain up for sale very often. Dan is pretty close to the end date. They were used from the late 40's up the mid 60's. Sometimes it was called crosscut chain.   |
|
|
|
Post by sweepleader on Oct 13, 2018 20:56:57 GMT -5
Looks like Chipper was invented in 1947, don't know when it was marketed or became dominant.
Another source says it was first marketed in 1947.
|
|
|
|
Post by rowdy235 on Oct 14, 2018 10:21:58 GMT -5
Goodness, and I thought square ground would be too hard....  |
|
|
|
Post by jerseyhighlander on Oct 14, 2018 10:41:47 GMT -5
Nice work. Looking at your picture, I'm wondering if any part of the process planes down the top of the teeth to keep them all at the same height, like you would do with a handsaw, which this appears to be mimicking. I can just picture somebody running the saw slow and holding the teeth to a benchstone secured in a vise or something. Maybe with the chain put on backwards.
Could probably do it with a good, large, maybe 14" flat file.
|
|
|
|
Post by sawnami on Oct 16, 2018 7:17:13 GMT -5
Nice work. Looking at your picture, I'm wondering if any part of the process planes down the top of the teeth to keep them all at the same height, like you would do with a handsaw, which this appears to be mimicking. I can just picture somebody running the saw slow and holding the teeth to a benchstone secured in a vise or something. Maybe with the chain put on backwards.
Could probably do it with a good, large, maybe 14" flat file.
They discourage filing the tops of the cutters, only the rakers. The cutters get the front edge filed and the rakers get the top (for depth) and front edge filed. |
|
|
|
Post by chainsawlady on Oct 16, 2018 9:56:33 GMT -5
And what are the odds of finding any new chain like that? Very interesting reading about the raker chain. We took the Homelite dealer in November 1951. Needed to cut wood for the two wood stoves for our old log house. We had to buy one saw - 26LCS - and a shoe box of parts for %500. That was a lot of money, I told my husband. No body is going to spend $350 plus to cut firewood. They only had a scrather chain at that time. Oregon came out later. We sold 3 - saws that winter and had $50 profit each. Had to sell one showing our demonstrator and then ordered the saw. When they came back and wanted to know how to sharpen the chains, we didn't know. But 53 years later and 5000 new saws sold, we learned a lot.And met a lot of interesting people. chainswlady |
|
|
|
Post by stillsawing on Oct 16, 2018 19:44:54 GMT -5
I've only seen one scratcher, mounted on a 26LCS that was purchased in the fall of 1951 according to the warranty card. Was owned by a wealthy stockholder of Wolfshead Oil in nearby Bradford, Pa. The chain and saw were like new, missed it in an auction. Still have it in my sights, know where the saw went and the new owner.
|
|
|
|
Post by sweepleader on Oct 16, 2018 20:45:14 GMT -5
I ran a 2 man saw with a scratcher chain on it at a gtg a couple of years ago. The owner said it was sharp but even with a huge engine, it could not compete with an SXL and a chisel chain.
|
|
|
|
Post by sawnami on Oct 16, 2018 23:29:57 GMT -5
I ran a 2 man saw with a scratcher chain on it at a gtg a couple of years ago. The owner said it was sharp but even with a huge engine, it could not compete with an SXL and a chisel chain. I'm interested in seeing how this scratcher does at the GTG. I found out that my 200cc gear reduction Mall 7 can pull a dull 3/4" pitch chain in half. One good thing about a gear reduction is that it turns so slow that the chain just kinda falls to the side instead of flinging wildly like the modern 15,000 RPM direct drive saws. đ |
|
|
|
Post by jerseyhighlander on Oct 17, 2018 0:43:25 GMT -5
I ran a 2 man saw with a scratcher chain on it at a gtg a couple of years ago. The owner said it was sharp but even with a huge engine, it could not compete with an SXL and a chisel chain. I'm interested in seeing how this scratcher does at the GTG. I found out that my 200cc gear reduction Mall 7 can pull a dull 3/4" pitch chain in half. One good thing about a gear reduction is that it turns so slow that the chain just kinda falls to the side instead of flinging wildly like the modern 15,000 RPM direct drive saws. đ We will all be waiting for the video on that. |
|
|
|
Post by jerseyhighlander on Oct 17, 2018 1:08:15 GMT -5
I ran a 2 man saw with a scratcher chain on it at a gtg a couple of years ago. The owner said it was sharp but even with a huge engine, it could not compete with an SXL and a chisel chain. Looking at Steve's blade and the drawings, I can see where this design was, pretty naturally, taken right from it's predecessor, the crosscut saw. Given that, I know for a fact, you could have all the edges as sharp as you could want, but have the geometry & the relationship between the cutters and rakers wrong and it would still cut like shit.
On a crosscut saw, one of the more important things is that the rakers are a bit shorter, how much being fully dependent on the wood you'll be cutting, than the cutters. Otherwise they will act like their decedents, the depth gauges everyone refers to as rakers via throwback, and they will keep the cutters from digging in and severing the grain.
|
|
|
|
Post by stillsawing on Oct 17, 2018 19:04:24 GMT -5
This is the only scratcher chain I've seen, sharp as a razor and very little use. Still kicking myself for missing auction. 
|
|
|
|
Post by jerseyhighlander on Oct 22, 2018 0:32:05 GMT -5
I just looked back at your pictures from the GTG and noticed the image froze the chain in motion pretty well. Then noticed the dust coming out of the cut, and realized it was the scratcher chain. So, how did it do?
|
|
|
|
Post by sawnami on Oct 22, 2018 6:39:17 GMT -5
It did well. Instead of chips, it pulled out a stream of coarse sawdust. It cut about as fast as the chipper but, the resulting cut was much smoother.
|
|
