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Tool Talk Discussion Forum

chain saw chain

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Adam J

12-29-2003 04:16:42




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I've seen chain saws discussed here before, so I got a question. Why sometimes when I cut off a small branch it will throw the chain off?I don't run the chain banjo string tight but not hanging below the bar either.




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Adam J

12-29-2003 23:19:30




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 Re: chain saw chain in reply to Adam J, 12-29-2003 04:16:42  
thanks guys for the info. I do have a roller tip bar, and don't have any trouble with larger stuff just small branches and twiggs. again thanks.



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BOB MARO

02-01-2005 09:14:40




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 Re: Re: chain saw chain in reply to Adam J, 12-29-2003 23:19:30  
I have an older 16" Timber Bear chain saw. Can you tell me what H.P. it is?



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SamH

12-29-2003 18:38:00




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 Re: chain saw chain in reply to Adam J, 12-29-2003 04:16:42  
I bet you have a roller tip bar. A solid tip will work a lot better with small branches.



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bob

12-29-2003 20:16:40




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 Re: Re: chain saw chain in reply to SamH, 12-29-2003 18:38:00  
when you cut small branches with a roller tip bar AT AN ANGLE, they will leverage the chain off the tip. The solid tip bar almost entirely eleminates that problem.



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treeboy

12-29-2003 15:37:00




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 Re: chain saw chain in reply to Adam J, 12-29-2003 04:16:42  
can't stay on too long tonight, the pacers are hopefully playing... first lets talk about the chain being tight , the chain should be able to snap back if pulled away from the bar , BUTT should pull around the bar by hand freely, should not droop down away from the bar... ok the end of some bars ,esp.with replacement tips get worn about 2" in from the tip due to "wear", this will add to the problem of chains jumping off..
AND when you cut a small limb it has a tenadacy to pinch on the bar directly below the chain & this forces the chain away from the bar & your usually cutting out near the tip &&& bingo the chain comes off..also most people don't run the saw at high rpm"s when cutting small stuff ALL of the above adds to the likelyhood of chains coming off. if your wearing your hardhat, chaps, & have a chainchatcher under your saw: try more throttle
go pacers, hope this helps & was not a waste of your time

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jokers

12-29-2003 09:37:11




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 Re: chain saw chain in reply to Adam J, 12-29-2003 04:16:42  
Adam

Small branches can and do get between the bar and chain and cause the chain to derail. I assume that you aren`t having this problem at other times.

Russ



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Ben in KY

12-29-2003 08:21:39




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 Re: chain saw chain in reply to Adam J, 12-29-2003 04:16:42  
Something is not right if the chain is being thrown off. Loose chain, bad bar, etc. A warm chain should fit well around the bar and not droop.



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