Four Stroke and two Stroke Capacity Comparison.
#1
Senior Member
Thread Starter
Join Date: Sep 2007
Location: Johannesburg, SOUTH AFRICA
Posts: 497
Likes: 0
Received 1 Like
on
1 Post
Four Stroke and two Stroke Capacity Comparison.
I often hear people asking what four stroke is needed for an equivalent two stroke engine.
I often wondered about that myself and seems that the general consensus is that a four stroke needs to be 1.5 times the capacity of a two stroke for the same power.
So assuming thet being true and generally agreed upon, I slapped a quick spreadsheet together with some comparative info with regards to two stroke versus required four stroke capacity and which Saito and OS engines I would use in their respective instances.
I know this is not rocket science or cast in stone, but I think this sort of sums it up according to my opinion.
Feel free to disagree or agree with this.
Marcel
I often wondered about that myself and seems that the general consensus is that a four stroke needs to be 1.5 times the capacity of a two stroke for the same power.
So assuming thet being true and generally agreed upon, I slapped a quick spreadsheet together with some comparative info with regards to two stroke versus required four stroke capacity and which Saito and OS engines I would use in their respective instances.
I know this is not rocket science or cast in stone, but I think this sort of sums it up according to my opinion.
Feel free to disagree or agree with this.
Marcel
#3
My Feedback: (2)
Join Date: Jun 2005
Location: Omaha, NE
Posts: 4,109
Likes: 0
Received 0 Likes
on
0 Posts
RE: Four Stroke and two Stroke Capacity Comparison.
Four strokes in the .52~.56 size range are underrated. These engines are equivalent to .40~.46 two strokes when tuned and propped correctly. The .70~.82 size four strokes are more equivalent to .51~.56 two strokes.
#4
Senior Member
Join Date: Apr 2005
Location: goolwasa, AUSTRALIA
Posts: 1,680
Likes: 0
Received 0 Likes
on
0 Posts
RE: Four Stroke and two Stroke Capacity Comparison.
I personally would double it. That way you wont be disapointed, but thats just me and if you have too much power , perfect . Cheers the pope