*Posted this on AS, related to the Oregon Speedcut bars (
http://www.arboristsite.com/communi...f-chain-and-speedcut-guide-bars.285694/page-8 ). My attempts to judge the effects of lighter weight and stiffness might apply to evaluating these other lightweight bars:
Angle of the Dangle
Weight is not everything. It has more of an effect on longer bars, especially out towards the tip, due to leverage. So I wanted to see what effect the lighter bar had on saw balance.
I suspended the 353 (empty tanks) from an overhead beam using a couple of ropes, so that it could pivot, and find its own balance point. I attached a carpenter's angle gauge to the only flat spot I could find (rear hand guard) with zip-ties and twisty-ties, to get relative angle measurements (yeah, I could do better in a 'real' laboratory, but this is what I had). I measured:
- (? unbranded) 16" nominal length:
21 ounces total weight
- Oregon SpeedCut 20" nominal length:
23.5 ounces
- Husqvarna branded, 20" nominal length;
28.6 ounces
Power Head Only (PHO) -
14°
Power Head with 16" conventional, NK bar -
6°
Power Head with 20" SpeedCut NK bar -
3°
PowerHead with 20" conventional bar -
0°
Small differences with bars this length - full fuel tank would probably hide it even more. Larger effect likely with longer bars.
Philbert