The Forestry Forum

General Forestry => Sawmills and Milling => Topic started by: Larry on November 08, 2020, 07:10:17 PM

Title: Belt dressing
Post by: Larry on November 08, 2020, 07:10:17 PM
I put a new drive belt on the mill about 10 hours ago.  Today it started slipping making 30" wide cuts.  Normally I would have re-adjusted the belt tension but I was in a hurry to finish so I sprayed it with Permatex belt dressing.  The slipping ceased and I pushed it hard cutting another 300 board foot.

Anybody using belt dressing?  I wonder how long it lasts?
Title: Re: Belt dressing
Post by: barbender on November 08, 2020, 07:33:52 PM
I never have, but that's a good idea🤔 I feel that on my diesel powered WoodMizer, the belt tension is always in the verge of slippage on wide cuts, yet I don't want to over do it and bust a crankshaft 😮 Maybe I should just hit it with some dressing and rock on!😁
Title: Re: Belt dressing
Post by: Magicman on November 08, 2020, 08:30:42 PM
A Wood-Mizer technician once told me to use bar soap.  I said what??  He said yes, bar soap.

It is not a substitute for proper tension but it will remove any glaze that may be on the belt.
Title: Re: Belt dressing
Post by: Larry on November 08, 2020, 09:39:38 PM
The soap trick used to be the fix for squeaky "V" belts on cars.  I was never sure if the soap improved belt traction or if it some how just magically made the squeak go away. ???
Title: Re: Belt dressing
Post by: Southside on November 08, 2020, 09:57:12 PM
Funny timing, I did mine last night.  The auto clutch belt, engine serpentine belt, and the drive belt.  Also do the edger belts and the moulder and planer on a regular basis.  This time I have the CRC stuff because that was the best deal at the time.  

Not sure how long the sticky benefit lasts but it does seem to help keep belts running longer.  This drive belt on my 70 is pushing 500 hours, it has one missing tooth lug, otherwise is in very good shape.  At $150 each I like to run them as long as possible.  
Title: Re: Belt dressing
Post by: ladylake on November 09, 2020, 04:58:10 AM
Quote from: barbender on November 08, 2020, 07:33:52 PM
I never have, but that's a good idea🤔 I feel that on my diesel powered WoodMizer, the belt tension is always in the verge of slippage on wide cuts, yet I don't want to over do it and bust a crankshaft 😮 Maybe I should just hit it with some dressing and rock on!😁

 I wouldn't worry about breaking a crank unless you have a CAT.  Cat cranks are breaking in skid loaders with no side load.   Steve
Title: Re: Belt dressing
Post by: mike_belben on November 09, 2020, 07:18:20 AM
Yeah belt dressing is a tack increaser while soap is a reducer, to stop squeeks by reducing the traction thats causing it.  Dont soap a slipping belt. 

If youre ever having belt problems google up on all the technicals of proper belt sheave setup and double check yours.. There is quite a science to getting maximum power transmission through a V belt reliably. 
Title: Re: Belt dressing
Post by: moodnacreek on November 09, 2020, 08:04:14 AM
Some 'belt dressings' are belt cleaners.
Title: Re: Belt dressing
Post by: SawyerTed on November 09, 2020, 08:34:31 AM
Soap is a lubricant.  +1 on don't lubricate V belts.  Clean and adjust belts that slip excessively.
Title: Re: Belt dressing
Post by: mike_belben on November 09, 2020, 08:37:46 AM
The belt dressings that arent a cleaner are essentially like 3M spray adhesive.  spraying it into the fan area while running will basically glue your beard to your cheek.  Your arm hair to your sleeve etc etc.  

Only did that once.
Title: Re: Belt dressing
Post by: barbender on November 09, 2020, 02:37:18 PM
Steve, I've seen pictures of cranks busted on Lombardini diesels too.
Title: Re: Belt dressing
Post by: farmfromkansas on November 09, 2020, 07:04:43 PM
An old farmer I worked for as a kid, said put turpentine on your combine belts, said it was the best belt dressing.
Title: Re: Belt dressing
Post by: Corley5 on November 10, 2020, 06:37:20 AM
Molasses.
Title: Re: Belt dressing
Post by: Crusarius on November 10, 2020, 12:53:38 PM
Coca cola works well to.

The turpentine would soften the belt and make it very sticky. long term effects may be undesirable.
Title: Re: Belt dressing
Post by: Chuck White on November 10, 2020, 06:25:33 PM
FYI:  I've seen this posted on belt dressing labels, Do not use belt dressing on serpentine belts!
Title: Re: Belt dressing
Post by: Southside on November 10, 2020, 10:25:43 PM
Funny. My WM 4000 runs 4 micro V belts that have 8 ribs on them, so a serpentine belt by any other name, and the book calls for routine application of dressing!!  
Title: Re: Belt dressing
Post by: Beavertooth on November 11, 2020, 01:55:58 PM
I have used belt dressing many times on my LT70 62cat and it works great.  
Title: Re: Belt dressing
Post by: kantuckid on November 16, 2020, 08:56:33 AM
Generally speaking a belt dressing is used to solve the symptom of something causing a slip, squeal both. Back when soap was in more common use on belts, belts were not nearly as well made/designed as now days. 
I would never use a solvent based whatever on a rubber type belt. 
I do wire brush my belts a bit when I change blades. 
Title: Re: Belt dressing
Post by: mike_belben on November 16, 2020, 09:46:43 AM
Quote from: Southside on November 10, 2020, 10:25:43 PM
Funny. My WM 4000 runs 4 micro V belts that have 8 ribs on them, so a serpentine belt by any other name, and the book calls for routine application of dressing!!  
The fun thing about having your name on the letterhead is that when your experts cancel each other out, you get to be your own expert.  Youre writing the checks whether it grenades or not right?  Test and tune is the best part. 
Whats the right oil viscosity and change interval?  Can this fitting be crimped on that hose? This one says 55ft lbs dry but that one says 47ft lbs lubed.  
Well none of em are gonna pay me if theyre wrong and im a pretty good mechanic so lets find out.  You learn more diagnosing mode of failure than parroting manufacturer recommendations, i can promise that.  There are thousands of "dont do thats" that work really well. And just as many "i did everything as per manufacturer" that go boom.  
Life is like a rodeo or drag race or combat. The best laid plans sometimes go right out the window when the gate opens, staging lights drop or first shots are fired.  Roll with it.  
Title: Re: Belt dressing
Post by: donbj on November 16, 2020, 06:57:34 PM
Quote from: mike_belben on November 09, 2020, 08:37:46 AM
The belt dressings that arent a cleaner are essentially like 3M spray adhesive.  spraying it into the fan area while running will basically glue your beard to your cheek.  Your arm hair to your sleeve etc etc.  

Only did that once.
Haha good one! Kinda like peein up wind :D