I was going to say the same thing about using CJRL (cotton jacketed rubber lined) hose for the bar. It's what a FS employee would have used. Handcrews in the fire biz would do the same with short lengths of hose when shouldering a saw going to and from the fireline to keep the cutters on the chain from tearing shirts and necks esp when the sawyer slips or otherwise loses his balance. The wildland agencies don't buy much CJRL anymore- it's pretty much all synthetic now (lighter weight- we haul this stuff for miles sometimes on our backs. Well, it seems like miles). But I think the municipal guys still use it a lot. Try getting ~ 3" diameter hose. But back in the day, it was all CJRL and many wildland engines still keep some on hand for the very start of a hoselay, where pressures on the hose are greatest.