Banana bars

[treediver]

Ive got a nice collection of bent chainsaw bars which have been gathering dust for the last few yrs ranging from 16-30"... has anyone ever managed to straighten them and if so how..

[kevwrenn]

my worry is that you would have to heat them to get an effective job and this may cause problems with the properties of the metal...

[Andy Collins]

I'd never profess to being able to straighten bent bars, but I've hammered them back to shape on site to get a job done. Saying that, I've junked the bars at the earliest opportunity. I cant see that the cost of spending time straightening is worthwhile, compared to replacement, except ,maybe on really large bars.

[skyhuck]

How did you manage to bend so many?I've bent 1 in 14 years,worn out plenty .

 

P.S. I'm not being smart I'm genuinely interested.

[MasterBlaster]

Sell them for scrap iron.

[treediver]

How did you manage to bend so many?I've bent 1 in 14 years,worn out plenty .

 

P.S. I'm not being smart I'm genuinely interested.

 

Usually we manage to stuff around 1 bar a year for one avoidable reason or another..normally its never my fault (obviously..)..

Its a case of them getting trapped / pinched/ Pulled /levered / driven over/ droped /oil pump faliure.

[Andy Collins]

Probably bent/twisted about 3 in 11 years, so not a bad average I suppose, still damn annoying when it happens tho.

[skyhuck]

Usually we manage to stuff around 1 bar a year for one avoidable reason or another..normally its never my fault (obviously..)..

Its a case of them getting trapped / pinched/ Pulled /levered / driven over/ droped /oil pump faliure.

 

sack em! sack em all!

 

kidding, sh1t happens!

[Marc]

I've bent a 25" bar back to shape, but it all depends on severity and location. If its twisted bent then its hard to straight.

If its bent at one point, then place it between 2 logs with bend pointing up and central, generally I space the logs about 12" apart, then stand on it. Sometimes you may need to apply more pressure, or increase the gap between logs.

Stihl reccomends a mechanical press to straighten their bars.

 

Out of 3 bent bars i've only ever got one straight enough so that it cuts reliably.

 

And i've NEVER bent a bar ever. Apart from my plastic filled 200T bar.

[bob]

stihl actually sell a bar straightener i believe