Greetings . . .
Spent some quality time with a triple beam balance and a set connecting rods I purchased off ebay several years ago. They are machined for insert bearings - and were sold as ready to go.
I am weighing them for balance and was surprised by the variability:
Assembly...Rod....Cap...Pin Bolt..Rod Bolts..TOTAL
A..........475.0...202.5...21.9.......88.7......788.1
B..........456.8...172.0...22.5.......88.8......740.1
C..........461.5...221.6...22.0.......88.1......793.2
D..........445.4...198.3...22.5.......87.6......753.8
E..........458.3...186.4...22.0.......89.4......756.1
F..........466.8...185.0...21.9.......88.7......762.4
Average..460.6...194.3...22.1.......88.6......765.6 grams
Max Var....29.6....49.6.....0.6........1.8..... 53.1 grams
Ave Var..6.426%...25.5%...2.711%....2.033%....6.936%
Abs Var..6.646%...28.8%...2.740%....2.055%....7.175%
With so much variability I am wondering if they are worth any more investment in time. Perhaps I should pursue another set?
I guess I will grind the parting lines off the beams and weigh them again. But the one 'runt' cap will cause me to have put the others on a 25% diet . . . seems extreme . . .
Thoughts?
Thanks in advance.
stock49
