caveman79
off to a rocking start
Member since July 2018
Posts: 16
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Post by caveman79 on Sept 17, 2018 16:39:30 GMT -5
Greetings,
I had a blade get bent after a rock slipped out of the vice recently...ouch. Just installed a new blade that appears level and straight...when I turn the saw on I "think" the blade is wobbling more than it should (steady vibration in the entire saw). Thoughts? I don't want to "test" the blade quite yet...
Also, the nut came off fairly easy and got a new blade bushing installed on the new blade without issues (at least I think)?
Looking for any advice from the old timers (or young timers) with more experience than myself.
Thanks!
*edit* this is on a 1960s model Lortone LS-18
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AzRockGeek
has rocks in the head
Member since September 2016
Posts: 703
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Post by AzRockGeek on Sept 17, 2018 16:57:38 GMT -5
It sounds like your space may have slipped out. If spacer is good, I would start looking for possible damage from the rock slip. Are your bearings tight? Try lifting the blade to see if the bearings are good. If bearings are good, I would place some type of reference point in the front of the blade that is stationary, turn blade by hand and see if the distance changes. Maybe you bent your arbor. Vibrations are not good. If necessary drain the oil and turn on saw with lid open, maybe something will be obvious.
Good luck.
Tim
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Post by manofglass on Sept 17, 2018 17:28:38 GMT -5
Or take the blade off and turn if it has a bent
Arbor you will see the wobble
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caveman79
off to a rocking start
Member since July 2018
Posts: 16
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Post by caveman79 on Sept 17, 2018 19:46:25 GMT -5
Thank you both for the reply and inputs. Definitely will take a look tomorrow and review based on your inputs and go from there.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 18, 2018 7:51:20 GMT -5
Make sure your flanges are not damaged(burrs etc)
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Post by johnjsgems on Sept 19, 2018 11:28:00 GMT -5
Clean the flanges and don't over tighten blade nut. If too tight it can dish the blade. You don't say what blade but you can lay blade on a flat surface and make sure it is flat too. Flanges should be minimum of 1/6 the blade diameter. If smaller there is not enough tensioning of blade by the flanges.
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Post by victor1941 on Sept 20, 2018 21:42:58 GMT -5
I would also check to make sure the arbor bolts are tight and the shaft pulley is tight.
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minerken
Cave Dweller 
Member since August 2013
Posts: 466 
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Post by minerken on Sept 21, 2018 11:18:42 GMT -5
If it turns out that the bushing is slipping one trick is to super glue it in place.
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caveman79
off to a rocking start
Member since July 2018
Posts: 16
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Post by caveman79 on Sept 23, 2018 19:59:39 GMT -5
Tonight I took off the blade and motor belt. Just using my hand on the belt between the blade pulley and auto-feed pulley, I just pulled the belt to turn the arbor...there was a noticeable tightening/losing or restrictive/loosening as I pulled the belt. Not 100% sure it's the arbor, but nothing else was loose.
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Post by johnjsgems on Sept 24, 2018 18:17:34 GMT -5
Lose the belt and just see if arbor pulley/shaft moves up/down or back and forth.
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caveman79
off to a rocking start
Member since July 2018
Posts: 16
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Post by caveman79 on Sept 29, 2018 22:28:23 GMT -5
Well, I got rid of the wobble. The bushing wasn't completely flat (wow just a couple hairs make a difference). So i got that taken care of and it's no longer wobbling.
That being said, the blade cuts great and smooth but I think the arbor may still be slightly bent? It makes a "chi chi chi chi" sound for lack of a better description as it cuts rock, as if part of the blade is further ahead at times than the rest as it rotates. Thoughts on continuing to use it as it is or is this normal?
Thanks again for all the input to a newbie!
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Post by johnjsgems on Oct 1, 2018 12:38:20 GMT -5
Tighten all the pulley set screws. You can get weird knocking sounds if pulley set screws are loose. Good idea to either tighten periodically or put a drop of non hardening LocTite on the set screws.
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cigarboxrock
starting to shine!
Member since December 2017
Posts: 25
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Post by cigarboxrock on Oct 12, 2018 16:47:11 GMT -5
Hello Caveman79
It has been our experience that when a rock slips out of the vice the impact on the arbor is hard enough that it knocks the arbor out of alignment as well it can damage your flanges.
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