Making this a grinding operation opposed to a turning one, gives you a lot of versatility, and considering you ground it for finishing, probably the best and most accurate you're going to get, you're going to be within .0001s on that guy, and slow turning, it seems that old steel likes a nice slow speed, it's hard as hell, and you got to take it easy, and go nice and slow on that old stuff. All those restoration guys out east are working on similar aged machinery since it's really all they got, their not going nuts on rpms or feeds or crazy Ap's. You know what your talking about and it's always wonderful to tune in, as a fellow machinist. I'm more on the CNC side of things these days but it's all relevant,
@@jonathanwright5550 The rotational mass is light enough that any imbalance will be minimal. I remember off the top of my head that the wall thickness of an '87 ford Ranger 2wd longbed driveshaft is 1/8"(looked it up as there's on in my scrap pile I was gonna cut of for material, but expected it to be much thicker) and the driveshaft is ~4" in diameter. any potential imbalance is very light compared to the throw off the center line. A 4" driveshaft, in the light vehicle world is about the largest diameter I've seem, with my Jeeps driveshafts being in the 2-3" range(and of unknown thickness, although I've got a couple to cut up as well)
@@jonathanwright5550 At 60mph, with 30" tires and a 3.55 axle ratio, it only spinning at 2386.5PRM, not slow by any means, but the minute imbalance possible, and the very limited leverage that imbalance has due to the driveshafts diameter, it's not really an issue. I wish I could find a link to the article the driveshaft manufacturer posted, but I can't find it now.
All customers bring joy. Some when they arrive, some when they go.
You almost certainly put a better finish on it than when it was new
A workman like manner. That is what you did. Good job.
Good work
That is such a low speed forgiving application, good bearings and adequate lubrication and it will be fine. It's not a formula one engine.
The way we do is because that's how We get it done.
Making this a grinding operation opposed to a turning one, gives you a lot of versatility, and considering you ground it for finishing, probably the best and most accurate you're going to get, you're going to be within .0001s on that guy, and slow turning, it seems that old steel likes a nice slow speed, it's hard as hell, and you got to take it easy, and go nice and slow on that old stuff. All those restoration guys out east are working on similar aged machinery since it's really all they got, their not going nuts on rpms or feeds or crazy Ap's. You know what your talking about and it's always wonderful to tune in, as a fellow machinist. I'm more on the CNC side of things these days but it's all relevant,
wonderful description John......we love you down here in Florida ...Paul
Looks great! 👏🏻
Many people think driveshafts need balancing. The major driveshaft manufacturers say it's not needed due to the diameter and speed of rotation.
But... they balance 'em.
Might not 'need' balance for function. But would need it for comfort
@@jonathanwright5550 The rotational mass is light enough that any imbalance will be minimal. I remember off the top of my head that the wall thickness of an '87 ford Ranger 2wd longbed driveshaft is 1/8"(looked it up as there's on in my scrap pile I was gonna cut of for material, but expected it to be much thicker) and the driveshaft is ~4" in diameter. any potential imbalance is very light compared to the throw off the center line. A 4" driveshaft, in the light vehicle world is about the largest diameter I've seem, with my Jeeps driveshafts being in the 2-3" range(and of unknown thickness, although I've got a couple to cut up as well)
@@jonathanwright5550 At 60mph, with 30" tires and a 3.55 axle ratio, it only spinning at 2386.5PRM, not slow by any means, but the minute imbalance possible, and the very limited leverage that imbalance has due to the driveshafts diameter, it's not really an issue. I wish I could find a link to the article the driveshaft manufacturer posted, but I can't find it now.
It might not effect bearing life but you'd feel it. Car makes still try to reduce N.v.h@@ravenbarsrepairs5594