Engine balancing
11-15-2006, 12:57 PM
#2
3rd Gear Member
Join Date: May 2006
Location:
Posts: 622
RE: Engine balancing
The entire roating assembly (crank, rods, pistons, harmonic balance and flywheel) is balanced as an assembly. Kinda like balancing a tire. Avoids vibration and premature weaar of the engine. Cheep insurance i you are dumping some cash into your motor.
11-15-2006, 05:50 PM
#4
I ♥ Acer
Join Date: Oct 2004
Location:
Posts: 17,565
RE: Engine balancing
Pretty much the same as blueprinting, where each engine part is weighed, shaved to precise weight etc. Some say it makes the parts weaker, but the less vibration and smooth action outweighs any of that.
11-16-2006, 02:25 PM
#5
3rd Gear Member
Join Date: May 2005
Location: Georgia
Posts: 540
RE: Engine balancing
Everyone explained it in generality. I take the rods weigh them. Then which ever one is the lightest I shave material off of the others to match that wieght. I also try to balance the rods, taking the center point and making sure that each one balances. This is not always possible. Then I take the pistons and weigh them and shave them to the lightest piston in the group.
11-16-2006, 09:48 PM
#6
4th Gear Member
Join Date: Mar 2006
Location: Concord, NC
Posts: 1,261
RE: Engine balancing
you don't want to that yourself unless to have a gram scale the rods acyully have two weights the big end and the little end and its not balanced with just total weight. It is done as follows 1/2* reciprcating + 1*rotating. that gives you the bob weight to balance the crank.
11-16-2006, 11:50 PM
#7
5th Gear Member
Join Date: Jun 2006
Location:
Posts: 4,089
RE: Engine balancing
Yeah...I use a completely different method. I drop my stuff off at the machine shop and say a magic spell. When I return a week later, my rotating assembly is fully balanced.
ORIGINAL: mustanglover66
you don't want to that yourself unless to have a gram scale the rods acyully have two weights the big end and the little end and its not balanced with just total weight. It is done as follows 1/2* reciprcating + 1*rotating. that gives you the bob weight to balance the crank.
you don't want to that yourself unless to have a gram scale the rods acyully have two weights the big end and the little end and its not balanced with just total weight. It is done as follows 1/2* reciprcating + 1*rotating. that gives you the bob weight to balance the crank.
11-17-2006, 09:00 PM
#8
4th Gear Member
Join Date: Mar 2006
Location: Concord, NC
Posts: 1,261
RE: Engine balancing
ORIGINAL: Colorado_Mustang
Yeah...I use a completely different method. I drop my stuff off at the machine shop and say a magic spell. When I return a week later, my rotating assembly is fully balanced.
Yeah...I use a completely different method. I drop my stuff off at the machine shop and say a magic spell. When I return a week later, my rotating assembly is fully balanced.
ORIGINAL: mustanglover66
you don't want to that yourself unless to have a gram scale the rods acyully have two weights the big end and the little end and its not balanced with just total weight. It is done as follows 1/2* reciprcating + 1*rotating. that gives you the bob weight to balance the crank.
you don't want to that yourself unless to have a gram scale the rods acyully have two weights the big end and the little end and its not balanced with just total weight. It is done as follows 1/2* reciprcating + 1*rotating. that gives you the bob weight to balance the crank.
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