Lo Pro on a 034 Super

I've been wanting to try my 3/8 lo pro on on the 034 super since it does so well on the 261. Saturday I finally tried it for the heck of it. I'm not sure it is any faster than 3/8. I'm going to do some testing but I need a 16'' 3/8 bar to compare it to. Anyways here is the video.

 

Your 261 is probably more powerful than the 034S so there may be some benefit to lo pro on it. I seriously doubt I will change to lo pro on the 034S. I got a couple 60 drive link chains Saturday for 3/8. I was bidding on a bar on ebay but I did not win. I'll get one at the dealer.

 

The 034s I have pulls 3/8 chain very good. I run 16-20" bars on it. I don't believe the lo pro would work as good on this size saw.

 

I've run the LP on 046 and 066 (both 20" bars) for years . Its all I buy.

 

Standard. Pretty sure the only difference in LP is the cutter height and double raker. The drive links are the same
Stihl roller nose

 

Here we go!

 

The rim is tighter on the low profile Picco rim drive than 3/8 standard on the 261. The 3/8 rim will work, but it will be a tad loose with low profile. You can also run low profile with a standard 3/8 spur sprocket just fine though on larger Stihl saws.

The real problem with running low profile on a 3/8 standard bar is the nose sprocket is too wide for low profile chain, which is narrower. A standard 3/8 nose sprocket will wreak low profile chain. You can run them with Duro hard nose bars. Stihl and Logosol large format low profile bars with low profile nose sprockets are hard to come by in the USA these days, but they are still available in Europe. Cannon makes 3/8 low profile large and small format bars for Stihl saws in just about any size. They are expensive, but they are available in the USA.

 

Isn't .050 gauge supposed to be .050 gauge. Why the thinner DL ? I've never had a problem with trashing chains or bars for that matter,,,,,, in a commercial logging app.

 

The Oregon 72LP I run does have the double raker.
The chip puller taller than the bumper. I file the rakers angled forward and down on the exit side of the forward cutter. I always thought they stuck out too far.Farther than the point of the tooth. One day I filed them this way and it cut better. So I kept on. Less drag ????????

 

You're talking rim drive sprocket ,,,, correct ???

 

The drive link on the lo pro is shorter. I've only ran lo pro on rims for lo pro. The bottom pic is aligned rivet to rivet.

 

The gauge of the drive links is 0.050 for both, and the pitch is 3/8 for both. Low profile chain width is narrower on top as compared to 3/8 standard chain. If you flipped the chains in the above photo 90 degrees so you look down at the loops, the low profile will be narrower. If you run a loop of low profile chain over a 3/8 standard bar sprocket tip, you will see that it rides up around the nose and does not touch the bar. That is because 3/8 standard bar sprocket roller tips are wider for running wider 3/8 chain. Low profile bar sprocket roller tips are narrower so the low profile chain rides on the rails of the bar around the nose. Check it and you will see what I mean.

 

Is the lo pro chain being discussed, the size chain that is filed with a 5/32 file, like the 91vxl or the 63ps or the 30lp?

 

Doesnt MasterMech have a post on this where he describes this and posts pics of the roller noses of bars with 3/8 and 3/8lopro and you can see what StihlHead is talking about. You can see the lopro chain riding up on the tip sprocket and also shows what 94BULLITT is talking about with the longer DL.

Maybe its not MasterMech but I have seen this post somewhere and thought it was him? Yea I am pretty sure he has a post he can link us too that he made on it?? But if I am wrong I know someone else probably remembers it too.

Edit: pretty sure this is the thread.

http://firewoodhoardersclub.com/for...t-3-bars-3-chains-5-sprockets-and-1-saw.3690/

 

Yes.

 

Lo pro is longer than 3/8" by a few thousandths. I know some milling guys ran 404" rims with less binding than the 3/8"