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+--- Thread: Value of Engine Balancing (/showthread.php?tid=460)
RE: Value of Engine Balancing - dickie65 - 23-01-2020
Just an idea,
You should have the rod perfectly level through its eyes to balance. ( Adjust the height of the scales to suit )
I have heard of hanging the rod on a bit of button thread to balance.
Most electronic kitchen scales do not have the required resolution. ( an lab balance is very accurate 0.01 g resolution )
A very thin rod through the small end / big end will give almost zero friction.
RE: Value of Engine Balancing - Chris KC - 23-01-2020
I quite agree Ray but a scale designed to weigh out flour and carrots is going to be both inaccurate and inconsistent at this level.
RE: Value of Engine Balancing - Bob Culver - 24-01-2020
It seems persons are working to tolerances closer than was/is customary for high revving production cars. The heading is "Value" which suggests a consideration of effect vs time or expense.
RE: Value of Engine Balancing - Howard Wright - 24-01-2020
Hi All
Thanks for the feedback. I’ve ordered some jewellers scales and will check the readings more carefully. I like the idea of additional washers under the big end bolts but I’d need a few to make up the 12 grams difference.
Cheers
Howard
RE: Value of Engine Balancing - Chris KC - 24-01-2020
(24-01-2020, 01:13 AM)Bob Culver Wrote: It seems persons are working to tolerances closer than was/is customary for high revving production cars. The heading is "Value" which suggests a consideration of effect vs time or expense.It's difficult to say how much is enough Bob, but I've never met anyone who regretted making an effort. With nearly half an ounce difference there's certainly some scope for improvement.
RE: Value of Engine Balancing - AustinWood - 24-01-2020
The actual weights measured are not that important. The difference between the rods is. So long as the readings are repeatable the actual accuracy doesn't matter.
RE: Value of Engine Balancing - dickie65 - 24-01-2020
Hi Folks,
My point about most kitchen scales is that they are not accurate enough to be repeatable but they will be within a gram or two.
It depends on how accurate you want to be.