Yes! Cost. Retired tractor engineer here. You typically see sprung tensioners on high quality drives that see variable loading. Why? The belt tension is held to a low constant regardless of the loading allowing long life for the drive.
I like the idea of an auto tensioner. It seems like it would be one less thing to remember to check.
The tension gauge measurement markings are used to do that for the specific belt size.
Correct belt tension is based on knowing the loads, not belt size.
Those knife clevis's sure do look like tire chain cross chain hooks;Hello Folks,
Using my mower yesterday (IHC model 70 or 71) around my wood pile I apparently backed into a modest sized log and got it wedged into the back of my mower (between the roller and deck). I now have a few hammers that are touching the deck (back/bottom edge). Looks like that in its life this has happened before. Not sure if it's my hammers bent straighter and hitting or if the deck is slightly bent (not obvious from the back nor very much from looking underneath). I think before bothering to repair the deck (as required) I will need new knives regardless- let them be guide in terms of hitting the deck.
I found the NH numbers. Ebay was ~$10/each, Messicks $29/ea. Plus shipping in both cases. I would need 88 knives (11 stations), and likely new clevis (or bend these open to insert the knives). Maybe they are pretty standard sized - have yet to look.
Attached are a couple of photos. You can see the shiney spots in the back. 5/16" bolts, nylock nuts. I've considered buying a knife to know the spec for the blade, then shopping at mower specific suppliers. That doesn't take into account the clevis, but the ones I have are in good shape to test fit and go forward, assuming I can get the knives off (will need to remove and test). I am missing one, but I think I can grind one to fit, weight wise. Or at least compare pricing for replacements. The originals are claimed on the parts list to also have bushing/tubes. I didn't notice any on mine (haven't taken any off to see - yet).
Part numbers 2, 3, 4. #2 & #3 have been discontinued, but still show.
Any recommendations for vendors?
Thanks!
Hello Folks,
Using my mower yesterday (IHC model 70 or 71) around my wood pile I apparently backed into a modest sized log and got it wedged into the back of my mower (between the roller and deck). I now have a few hammers that are touching the deck (back/bottom edge). Looks like that in its life this has happened before. Not sure if it's my hammers bent straighter and hitting or if the deck is slightly bent (not obvious from the back nor very much from looking underneath). I think before bothering to repair the deck (as required) I will need new knives regardless- let them be guide in terms of hitting the deck.
I found the NH numbers. Ebay was ~$10/each, Messicks $29/ea. Plus shipping in both cases. I would need 88 knives (11 stations), and likely new clevis (or bend these open to insert the knives). Maybe they are pretty standard sized - have yet to look.
Attached are a couple of photos. You can see the shiney spots in the back. 5/16" bolts, nylock nuts. I've considered buying a knife to know the spec for the blade, then shopping at mower specific suppliers. That doesn't take into account the clevis, but the ones I have are in good shape to test fit and go forward, assuming I can get the knives off (will need to remove and test). I am missing one, but I think I can grind one to fit, weight wise. Or at least compare pricing for replacements. The originals are claimed on the parts list to also have bushing/tubes. I didn't notice any on mine (haven't taken any off to see - yet).
Part numbers 2, 3, 4. #2 & #3 have been discontinued, but still show.
Any recommendations for vendors?
Thanks!
Mid 60s-early 70s design/sales. I expect I will end up making/buying something with a bolt, spacers. I'll be removing a couple and if needed send them to a supplier for a match up. As long they can be sloppy but not enough to hit the drum nor the body I'm good.
Thank you!
