« previous next »
Pages: [1]   Go Down

Author Topic: what type of machines are needed to balance piston rods and cranks on chainsaw  (Read 990 times)

0 Members and 0 Guests are viewing this topic.

Offline huguenot ny

  • 3 cube
  • *
  • Posts: 5
  • Karma: 0
what type of machines are needed to balance piston rods and cranks on chainsaw
« on: April 01, 2012, 03:59:25 am »
i would like to know what type of machines and ways there are to balance cranks and piston and rod assemblies
Logged

Share on Facebook Share on Twitter

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: what type of machines are needed to balance piston rods and cranks on chainsaw
« Reply #1 on: April 01, 2012, 08:44:30 am »
The general practice is to make the counterweights be the total of the weight of the crankshaft end of the rod and half the weight of the piston, ring(s), circlip(s), wristpin, and small end of the connecting rod.

On a single cylinder engine, balance is always a compromise so dynamic balancing is sometimes used to reduce the vibration.
Logged
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline Al Smith

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2779
  • Karma: 181
Re: what type of machines are needed to balance piston rods and cranks on chainsaw
« Reply #2 on: April 08, 2012, 09:52:53 am »
On an auto type engine it's a little complicated .The rods are balanced as per weight in general plus dynamically big end to small end .Pistons have weight "bosses " which are milled to get the exact weight for each assembley .In modern production methods it's all done on CNC machinery . I would have no idea how a person using standard manual machine tools would do it .
Logged
Pages: [1]   Go Up
« previous next »
 

Related Topics

  Subject / Started by Replies Last post
9 Replies
1545 Views 		Last post April 26, 2011, 04:43:54 pm
by rick
20 Replies
3495 Views 		Last post November 09, 2012, 06:23:19 am
by Al Smith
0 Replies
337 Views 		Last post March 02, 2014, 12:20:32 pm
by Cut4fun .
23 Replies
1161 Views 		Last post April 17, 2014, 04:37:58 am
by KilliansRedLeo
1 Replies
361 Views 		Last post November 08, 2014, 09:17:54 am
by aclarke
3 Replies
286 Views 		Last post September 13, 2015, 12:38:21 pm
by Cut4fun .
17 Replies
945 Views 		Last post October 30, 2015, 08:26:24 am
by 660magnum
4 Replies
662 Views 		Last post March 10, 2017, 10:15:33 am
by Nathaniel Vansickle
1 Replies
497 Views 		Last post January 01, 2020, 04:41:46 pm
by Old Iron Logging
1 Replies
649 Views 		Last post June 26, 2019, 05:35:35 am
by Al Smith