P PerkinsPowered ArboristSite Lurker Joined Aug 28, 2018 Messages 26 Reaction score 3 Location Norway Dec 19, 2019 #1 Does anyone use computer program for calculate port timing durations for chainsaw engines? "Rexxys mopedprogram" works great for 2-stroke engines with expansion chamber exhaust. Can it also be used for engines with "back pressure exhaust" ? Here i inserted numbers for Husqvarna 254, year: 87
Does anyone use computer program for calculate port timing durations for chainsaw engines? "Rexxys mopedprogram" works great for 2-stroke engines with expansion chamber exhaust. Can it also be used for engines with "back pressure exhaust" ? Here i inserted numbers for Husqvarna 254, year: 87
Yotaismygame Juiced Saws #GetJuiced Joined Nov 1, 2017 Messages 2,322 Reaction score 2,263 Location Orgone Dec 19, 2019 #2 But why?
buttercup Addicted to ArboristSite Joined Aug 8, 2019 Messages 2,738 Reaction score 4,336 Location North Dec 19, 2019 #3 Yotaismygame said: But why? Click to expand... Ideal exhaust opening for a two stroke high performance engine; Di := 2 ⋅ 2.03 ⋅ ccm Example: 20ccm: Di := 2 2.03 ⋅ 20 Di = 12.744 mm
Yotaismygame said: But why? Click to expand... Ideal exhaust opening for a two stroke high performance engine; Di := 2 ⋅ 2.03 ⋅ ccm Example: 20ccm: Di := 2 2.03 ⋅ 20 Di = 12.744 mm
Yotaismygame Juiced Saws #GetJuiced Joined Nov 1, 2017 Messages 2,322 Reaction score 2,263 Location Orgone Dec 19, 2019 #4 Are you saying to eliminate any guess work?
buttercup Addicted to ArboristSite Joined Aug 8, 2019 Messages 2,738 Reaction score 4,336 Location North Dec 19, 2019 #5 Yes I do.
buttercup Addicted to ArboristSite Joined Aug 8, 2019 Messages 2,738 Reaction score 4,336 Location North Dec 19, 2019 #6 Yotaismygame said: Are you saying to eliminate any guess work? Click to expand... I will explain the crow tows when I'm sober if you interested. I have to look in to it. Not able to do it myself but you are certainly capable of doing it.
Yotaismygame said: Are you saying to eliminate any guess work? Click to expand... I will explain the crow tows when I'm sober if you interested. I have to look in to it. Not able to do it myself but you are certainly capable of doing it.
P PerkinsPowered ArboristSite Lurker Joined Aug 28, 2018 Messages 26 Reaction score 3 Location Norway Dec 20, 2019 #7 Could theese numbers be fair for a woods ported saw; Attachments HQ 254 nye tal.jpg 129.4 KB · Views: 7