SS Planer

[jsburger]

Don,

My post was not directed at you. Just a general observation/opinion. Of course if the pulleys are crap they need to be replaced. Anything close will work and if it changes the cutter head speed a bit so be it. It is not a big deal.

[dgreen810]

update:

When I replaced the SS pulleys, and belt, I found the Grizzley "Twist Belt" for the 4L replacement rides about 1/8" above the rim of a "A" section pulley. The SS original belt guard is so close to the original pulleys the new belt will not clear the guard. I didn't want to start cutting up the SS guard which you can clearly do. I decided to make a replacement out of some 1/4" Lexan poly. I know it's over-kill but had it so why not use it.

Boy this thing now runs super smooth, no vibrations and quiet.


Don G

[charlese]

...
Cuts per inch is the defining factor. The only way planers with a fixed feed rate can change the cuts per inch is change the cutter head RPM. That is what Dewalt does with their two speed lunch box. Their two speed 735 planer cuts 96 or 179 cuts per inch.

Minor correction is dude here, John. Recently had the experience to take apart my Dewalt 735. Had to fix a problem with a broken sprocket on the front drive roller. Parts are readily available and inexpensive. http://www.ereplacementparts.com/dewalt ... fgodu3MK7A

The way DeWalt changes the cuts per inch is by changing the feed speed. The cutter speed remains unchanged. BTW 96 cuts per inch is smooth enough for most uses, but the 179 cuts per inch saves blade longevety. Smaller slices = less wear on the blades.

[jsburger]

...
Cuts per inch is the defining factor. The only way planers with a fixed feed rate can change the cuts per inch is change the cutter head RPM. That is what Dewalt does with their two speed lunch box. Their two speed 735 planer cuts 96 or 179 cuts per inch.

Minor correction is dude here, John. Recently had the experience to take apart my Dewalt 735. Had to fix a problem with a broken sprocket on the front drive roller. Parts are readily available and inexpensive. http://www.ereplacementparts.com/dewalt ... fgodu3MK7A

The way DeWalt changes the cuts per inch is by changing the feed speed. The cutter speed remains unchanged. BTW 96 cuts per inch is smooth enough for most uses, but the 179 cuts per inch saves blade longevety. Smaller slices = less wear on the blades.

Interesting, I stand corrected. So does the 935 only have a single motor? If so how do they change the feed rate? Some kind of two speed transmission to drive the feed rollers?

[charlese]

Interesting, I stand corrected. So does the 935 only have a single motor? If so how do they change the feed rate? Some kind of two speed transmission to drive the feed rollers?

Yep! a set of gears is present on the left side of the machine. Flipping the feed lever throws the change gear either in or out to mesh with the roller gear. The front roller turns the back roller with chains.

The cutter is turned by a belt from the motor. The cutter shaft turns the main gear in the gear box.

Part number 126 is the gear housing. http://www.ereplacementparts.com/dewalt ... _2987.html
There is an open view of the gear box in the lower left.

The single motor also directly turns the high powered exhaust fan.

[Sazerac81]

update:

When I replaced the SS pulleys, and belt, I found the Grizzley "Twist Belt" for the 4L replacement rides about 1/8" above the rim of a "A" section pulley. The SS original belt guard is so close to the original pulleys the new belt will not clear the guard. I didn't want to start cutting up the SS guard which you can clearly do. I decided to make a replacement out of some 1/4" Lexan poly. I know it's over-kill but had it so why not use it.

Boy this thing now runs super smooth, no vibrations and quiet.


Don G

That is one sexy mod Don! Care to provide information on where you acquired those cast iron pulleys (Product numbers and mfg. would be very helpful!)? I might do the mod just because it looks so unique and although my planer is without significant vibration, I would love a sturdier set of pulleys if the prices were reasonable.

The red grizzly link belt has a nice "don't touch this" flair to it!

Cheers,
John

[dgreen810]

Sazarac81

John I bought from Amazon. Top pulley is a TB Woods AK 3058 3.05" at $ 8.14, Bottom pulley is a TB Woods AK 5658, 5.4" at $ 13.65. The belt is a Grizzly T21992 at $32.99. Note: on the larger pulley I went for an item that was shown as slightly used at about half price. I have found that Amazon lists items as slightly used when in fact they are probably open box or damaged box items that in fact are "New". In any case if it was slightly used it would probably be an item that was returned for some reason but I took the gamble.

If you go this route, it will be necessary that the belt guard will need to be either modified or make a new guard as I did. I just noticed Amazon only has one more AK5658 in stock and the price will probably go back up.

As I stated before, you will be pleasantly surprised at how much quieter and smoother your planer will operate. If you do take the plunge, please let me know what you think?

Don G

[billmayo]

Not to steal your topic. I have been using the link belts for many years in my personal Mark V headstocks. It was 35 links with the Power Twist Plus belts. Yes, It keeps the sheave vane surfaces clean with very little wear. The Mark V headstock does run quieter with less vibration using the link belt and appears to change speed a little easier when going form FAST to SLOW.

[dgreen810]

Bill Mayo

Your not stealing anything. Just trying to provide some options. On the same note, I put Grizzlys on my Delta 14" drill press and was amazed at the difference in vibration and noise. I have not put one on my Mark V mainly because I had no reviews of what to expect in a variable situation.

Don G

[JPG]

I remember Bill stating the link belts cause more wear to the aluminum sheeves.

Still true, or is my memory faulty?