Thread: #714 rebuild

What a gorgeous old beast!!!

Just what machinery should look like!!

great looking old saw, weird setup for tracking, is the leaver sprung loaded or does it slide up & down to ingage.

Originally Posted by scrounger

great looking old saw, weird setup for tracking, is the leaver sprung loaded or does it slide up & down to ingage.

My saw - the ones with the ugly yellow paint - just has a T attached to a bolt. The photo below is what was on the 36" Enterprise saw than Shane Whitlock restored. I think the lever is mounted in a slot attached to the sprocket shaft. The slot would allow moving the lever far enough to disengage the cog it is in. The lever would have a pin perpendicular to the face of the lever. You would raise the lever up to disengage and move to the next or desired cog. The weight of the would prevent any movement of the sprocket.
The photo of the 714, you can see a lever of some sort at about the 7:30 position. There is little nothing else up there to adjust.

I can't find anything to help me better describe this.

Thanks

Don

Tracking
A colleague told me it might be a pawl and ratchet. Well sort of but not quite. I am going to try and make some scale measurements from Shane's finished 36" as guide to fabricate my own.
Tension.
The original tension spring on this saw is a disk of gum rubber about 2" thick. It was cracked and looking tired so I replaced it with 2 1" disks. It is not particularly effective. I am thinking of changing to a good compression spring.

I want the band speed closer to 5000 SFPM, so i increased my motor sheave diameter by nearly 1". Needless to say, the 3HP motor won't quite handle the load, so I purchased a 5HP unit. Because of the mounting, I asked the motor shop to rotate the end covers 90 degrees so the grease zerks were accesible. Good thing I did. After doing the work, they tested the motor and noticed a slight imbalance. A new motor is on its way. I am glad I had not mounted it. The thing weighs over 80 lbs.

Any comments or suggestions appreciated.

Don