Author Topic: Back yard Saw Race. (Tips)  (Read 779 times)

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Offline Cut4fun .

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Re: Back yard Saw Race. (Tips)
« Reply #20 on: November 27, 2013, 05:38:05 pm »
Again what was the raker set at?  Thats why I ask. Looked way low.   The others mentioned what else was wrong.

Look at my raker on my 72dl chain in pic.
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Offline Adirondackstihl

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Re: Back yard Saw Race. (Tips)
« Reply #21 on: November 27, 2013, 05:56:30 pm »
Yes it does vibrate bad lol If I file back more tooth will it correct that or do I grab a new chain and start over?
The farther back you file, the less vibration you'll get, but I think you may have taken this one a little too far. Put some angle or ramp back into the rakers as well. In other words, take some of the bluntness from the leading edge of the raker......round it over some

Offline 660magnum

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Re: Back yard Saw Race. (Tips)
« Reply #22 on: November 27, 2013, 06:35:04 pm »
A bigger more powerful saw will reduce the vibration a little sometimes
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Offline neil

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Re: Back yard Saw Race. (Tips)
« Reply #23 on: November 27, 2013, 06:36:00 pm »
if I may add a little from an aussie's perspective, here is some new chain I done up, my race chains now days are from new. (second chain is a new loop to show the difference) I do them up as training chains 1st, then as they are filled back and times improve I then move them into a second or spare race chain, once they get near their best, I run them as 1st race chain for a particular saw to cut in a particular race.
In other words I usually have maybe 6 to 12 chains at different stages. Once I get them filled back and going properly, they will then last a few seasons because they cut 1 discipline.

One piece of advise I learned the hard way,,,, leave raker height adjustment till last, reshape and thin / polish it to reduce drag.



another thing with speed chains, its very easy to do a lot in the wrong direction.

edit...
Here is another pic showing detail in polishing / thinning before the cutting edge has even been touched.
My process may not be the best but, it works for me, years ago I made race chains from work chains, just run them until they were filled back enough to start being competitive.


Offline Miller-Thinner2

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Re: Back yard Saw Race. (Tips)
« Reply #24 on: November 27, 2013, 07:49:09 pm »
"Again what was the raker set at?  Thats why I ask. Looked way low.   The others mentioned what else was wrong.

Look at my raker on my 72dl chain in pic. "

I just went at it with a flat file. I have no idea about setting proper raker height. ??? I have always just gave them a a couple rubs with the flat file about every 3 filings. I know its probably  not the proper way And with this chain I went at it a little more then usual.  I used a guide to file the rakers but all it does is make them all the same height.
 
I have an old thing kicking around here some where file o mate or something like that can I use that to set rakers? I have no idea when it comes to this stuff and that is one of the reasons i come to this forum lol

Offline Cut4fun .

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Re: Back yard Saw Race. (Tips)
« Reply #25 on: November 27, 2013, 07:54:39 pm »
You dont want your chain suking the rpm's out of the saw in the cut.  You want to keep peak rpms all the way through the cuts. 

I think I could find a 49cc I ran and show 3 good cuts in a video and then another video pushing to hard and pulling to hard, pulling it off the rpms in the cuts.  This wasnt the chain, but operator error.   
Your chain with raker low will only make it worse on you running the saw and pulling it down.
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Offline Cut4fun .

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Re: Back yard Saw Race. (Tips)
« Reply #26 on: November 27, 2013, 08:08:15 pm »
listen to saw rpm, good decent run for me.

http://www.youtube.com/watch?v=RVHXhf6UoNA


grrrr cant find the same partner 5000 in different bad run.  So here is a redmax 5000 and you can hear me pulling it off the sweet spot in ths cuts too.

http://youtu.be/cD_0M6ezvb8





Listen to your motor and keep it in the sweet spot of peak rpm's in the cut.   You need to match your chain, gears, operating style etc to your saws sweet spot.   Lot more to it if you want a contender in the redneck leagues.  ;)
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Offline Miller-Thinner2

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Re: Back yard Saw Race. (Tips)
« Reply #27 on: November 27, 2013, 08:26:11 pm »
"Listen to your motor and keep it in the sweet spot of peak rpm's in the cut.   You need to match your chain, gears, operating style etc to your saws sweet spot.   Lot more to it if you want a contender in the redneck leagues. "

I am enjoying reading all the info and trying different tips I see and read. Learning real quick its way more then having a good working saw, I am going to turn this into a winter hobby and hopefully be a contender in the next back yard saw contest in the spring.

I think my next step is to get  a couple logs sawed out so i have something clean and consistent to do practice cuts on.

Offline HolmenTree

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Re: Back yard Saw Race. (Tips)
« Reply #28 on: November 28, 2013, 12:09:51 pm »
Build your self a solid log stand that can be setup and made as portable as possible.
Here are some pics of my log stand setup that I built. I welded together some steel tubing with a 4" strap cargo winch welded on the side.
 I have used this setup to hold round blocks verticle for standing block chop, just bore cut with chainsaw a slot near bottom of block for the 4" strap to pass through and then winch standing block down solid.
Square or round log can be used horizontal for bow saw and powersaw.
As my pics start from over 10 years ago you can see how I have advanced it from a stand on sheet of plywood to mounted on a stage trailer. I run this competition every February 3rd weekend.
Making a living with a saw since age 16.

Offline Cut4fun .

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Re: Back yard Saw Race. (Tips)
« Reply #29 on: November 28, 2013, 12:18:09 pm »
Good idea above.  cant stand aka log stand thread  http://chainsawrepair.createaforum.com/tools/cant-stand/msg2460/#msg2460
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