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Motor bogging down

Posted: Thu Nov 14, 2013 9:17 pm
by bow
I'm fairly new to forums and also with my mark 5. The motor bogs down when set at the magana dado position andruns better at the band saw speed but it's pretty slow. I have a non adjustable chip tooth sawing ceder posts cutting a 7-8" x 7-8" single pass grove. The adjustable drive belt is 15-16" thick and the bearings on both shafts seem to be fair. the dado teeth are not carbide but when I'm cutting with a sharp carbide single blade about 2 and a half inches thick it bogs down pretty easily.

Posted: Thu Nov 14, 2013 9:35 pm
by beeg
Welcome to the forum Bow.
How fast are ya feeding it? When was the last maint? How about knot cutting so deep?

Posted: Thu Nov 14, 2013 9:42 pm
by algale
bow wrote:I'm fairly new to forums and also with my mark 5. The motor bogs down when set at the magana dado position andruns better at the band saw speed but it's pretty slow. I have a non adjustable chip tooth sawing ceder posts cutting a 7-8" x 7-8" single pass grove. The adjustable drive belt is 15-16" thick and the bearings on both shafts seem to be fair. the dado teeth are not carbide but when I'm cutting with a sharp carbide single blade about 2 and a half inches thick it bogs down pretty easily.
As to the dado issue,can you explain what you mean by "runs better" at the band saw setting versus dado setting? Runs faster? Bogs down less?

As for bogging down with a regular carbide blade, have you aligned the table and rip fence lately?

Posted: Fri Nov 15, 2013 6:27 am
by dusty
Without stop history on this, you have us shooting in the dark and some of what you have reported is confusing.

The bandsaw setting does cause the headstock to run slower; it is suppose to. The dado or saw speed is suppose to cause the headstock to run faster. If you are cutting dados at the bandsaw speed, I am surprised that you are cutting much at all.

Make sure you have a "sharp" dado blade. Make sure that the headstock has been cleaned and lubricated. Set the headstock for the appropriate speed for the task at hand. Tell us - are you ripping a dado or cross cutting it?

If you are ripping (using the rip fence) table and rip fence alignment are important.

If you are cross cutting dado - not so important because the rip fence is not in use.

Cutting dados (however not in cedar) can be a chore for the saw. Don't cut the entire depth all at once. A couple passes, cutting deeper each time may be a better approach.

Good luck and please let us know how it is going. Has this helped at all. If not, tell us so.

Thank You for the great advice Algale & Dusty

Posted: Fri Nov 15, 2013 6:32 pm
by bow
There is one thing that I noticed and that my fence was off about a quarter inch on the out board side of the saw by about a 1-4" sorry my slash key is not working so I have to use the space. I will check the fence and also I'm ripping the posts on 2 sides because my son wants to be different and put his pickets horzental insteed of vertical lots to cut.
I took the motor off 3 days ago and blew it out and checked the belt and blew all the dust out of it. I took the drive shaft outer spindle off and checked the shives and lubed the spindle and it was missing a ground prong so i installed a 15' #10 cord and I have a lot of books with it and lots of acessories but it sounds like I'd better check my alignments and settings. I also got a bunch of extra tools and parts and pieces with it. I'm not sure what there all for but I hope to figure it out.You guys have been of a great help.[/U][/B] I will be sure to let you know what I've done to help the situation. Can I upload any pictures of the items that I dont know what its for, as an attachment. Thank You cant wait to start building things. I have 20 grandkids and when i have the money I will look to see if there is a jig saw out there so we can work on the smaller projects. My grandkids love to build stuff!

Posted: Fri Nov 15, 2013 7:43 pm
by beeg
You can upload pics as long as they're 800X600 in size. Also see here as to how to doit.
https://forum.shopsmith.com/viewtopic.php?t=114

Posted: Sat Nov 16, 2013 2:44 pm
by JPG
bow wrote:There is one thing that I noticed and that my fence was off about a quarter inch on the out board side of the saw by about a 1-4" sorry my slash key is not working so I have to use the space. I will check the fence and also I'm ripping the posts on 2 sides because my son wants to be different and put his pickets horzental insteed of vertical lots to cut.
I took the motor off 3 days ago and blew it out and checked the belt and blew all the dust out of it. I took the drive shaft outer spindle off and checked the shives and lubed the spindle and it was missing a ground prong so i installed a 15' #10 cord and I have a lot of books with it and lots of acessories but it sounds like I'd better check my alignments and settings. I also got a bunch of extra tools and parts and pieces with it. I'm not sure what there all for but I hope to figure it out.You guys have been of a great help.[/u][/b] I will be sure to let you know what I've done to help the situation. Can I upload any pictures of the items that I dont know what its for, as an attachment. Thank You cant wait to start building things. I have 20 grandkids and when i have the money I will look to see if there is a jig saw out there so we can work on the smaller projects. My grandkids love to build stuff!

1/4" OMG!

Before 'ripping' any more get that fence alignment correct!!!!!!!!!!!!!!!!!




Did I mention aligning the fence????





Oh! by BTW you need to align the fence!

Posted: Sat Nov 16, 2013 4:06 pm
by algale
Be sure that the fence misalignment is not a table misalignment. The main table's miter slots must be aligned to the blade and then the fence to the slots. If you only check fence alignment and correct it without correcting a table misalignment (if there is one) you will just be causing other headaches down the line.

Posted: Sat Nov 16, 2013 9:54 pm
by JPG
First check the set screw that is used to 'bias' the fence. It is on the right end of the fence base that rides on the fence rail. Make sure it is retracted so it does NOT contact the rail.