Project of the Month built by mayhugh1

Help Support Home Model Engine Machinist by donating using the link above or becoming a Supporting Member.
Home Model Engine Machinist > Building Them > General Engine Discussion > connecting rods and bushings

Reply
 
Thread Tools
Old 12-24-2008, 02:44 PM   #1
Kermit
Guest
 
Posts: n/a
Default connecting rods and bushings

I think this is a unique type of rod bearing that would more suited to miniture models in that it allows the use of one single bolt to adjust bearing grip.



But how to provide with lubrication?


any ideas?

Kermit


 
 
Reply With Quote
Old 12-24-2008, 03:02 PM   #2
chipstractor
 
Join Date: Aug 2008
Posts: 54
Liked 9 Times on 9 Posts
Likes Given: 2

Default Re: connecting rods and bushings

You probably can't get a good look here...

But this engine has a zerk fitting. Since this is an "upside" down motor "splash" lubrication was insufficient. It does throw of a blob or two of grease, but that just teaches people not to be wearing a suit near me and my machines.

Zerk fitting for this one to...


chipstractor is offline  
 
Reply With Quote
Old 12-24-2008, 03:53 PM   #3
Kermit
Guest
 
Posts: n/a
Default Re: connecting rods and bushings

so a standard zerk that one uses to inject grease?

If these bearings will work on grease and don't need oiling then that's my answer.

Thanks,
Kermit
 
 
Reply With Quote
Old 12-24-2008, 04:34 PM   #4
Paula
 
Join Date: Jan 2008
Posts: 87
Liked 12 Times on 12 Posts

Default Re: connecting rods and bushings

Hi Kermit,

That's an interesting design! Have never seen it before. Have you considered using a grease cup? There are some on this page:

http://deboltmachine.com/_wsn/page6.html

You put some grease in the cap, then screw it onto the body. As you screw the cap down, it forces grease into the bearing. I used these on my Stickney hit/miss engine (from a DeBolt kit) and they worked splendidly. They are a bit messy to fill, however.

Paula

(PS... There doesn't seem to be a way to assemble that bearing, the way it's drawn up.)
__________________
Have you hugged a model engine today?
Paula is offline  
 
Reply With Quote
Old 12-24-2008, 04:40 PM   #5
chipstractor
 
Join Date: Aug 2008
Posts: 54
Liked 9 Times on 9 Posts
Likes Given: 2

Default Re: connecting rods and bushings

Yes standard zerk for grease gun, with channels to allow grease get to where it needs to be. In my applications I am running for minutes to hours, so I can't testify to industrial use.
Depending on application it may work for you.
chipstractor is offline  
 
Reply With Quote
Old 12-24-2008, 08:45 PM   #6
compound driver 2
 
Join Date: Jan 2008
Posts: 207
Liked 10 Times on 10 Posts

Default Re: connecting rods and bushings

Hi Kermit
Iv been fitting taper adjusters on big ends on models for many years, with a split brass its the only way to get accurate bearing setup. It also allows any wear to be filed out of half the brass. Lubrication is by way of an oil cup.
I think you can just see the adjuster nut on the big end in this picture.







compound driver 2 is offline  
 
Reply With Quote
Old 12-25-2008, 03:21 AM   #7
Kermit
Guest
 
Posts: n/a
Default Re: connecting rods and bushings

Quote:
Originally Posted by Paula
(PS... There doesn't seem to be a way to assemble that bearing, the way it's drawn up.)
I see two half brasses, one with the slot on the flat away from the shaft. I'm not seeing any problems with it(the dwg). If I'm missing something I guess you're gonna have to spell it out for me.

Blind in one eye and can't see out of the other,
Kermit
 
 
Reply With Quote
Old 12-25-2008, 03:46 AM   #8
scoop
 
Join Date: Nov 2008
Posts: 83
Liked 3 Times on 3 Posts

Default Re: connecting rods and bushings

Hi Kermit
I must agree with Paula on this,how do you get the flanged brass segment into the square hole?Is this a test or am I just dim?

puzzled regards Steve C.
__________________
non plaudite-modo pecuniam jacite.
scoop is offline  
 
Reply With Quote
Old 12-25-2008, 04:44 AM   #9
Kludge
Guest
 
Posts: n/a
Default Re: connecting rods and bushings

Quote:
Originally Posted by Paula
(PS... There doesn't seem to be a way to assemble that bearing, the way it's drawn up.)
On staring at it with my med and caffotine soaked brain, I think I see it. It looks like the wedge piece on the right - the one held down by a bolt - can be removed leaving enough room to wiggle the rest out without resorting to large hammers, torches or bad language. Well, not a lot anyway.

I think.

Best regards,

Kludge
 
 
Reply With Quote
Old 12-25-2008, 04:55 AM   #10
joeby
 
Join Date: Nov 2008
Posts: 310
Liked 22 Times on 21 Posts

Default Re: connecting rods and bushings

Could be that the flange is only on both sides at the left end, the right end would be held in place by the crank journal and wedge? If so, removing the wedge would allow it to come apart.

The individual who made the drawing has apparently left out some information. What exactly does the hidden line around the bore represent?

Kevin


joeby is offline  
 
Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sold--Large connecting rods mnay Buy / Sell / Trade / eBay 1 01-17-2013 01:17 AM
Machining connecting rods. cubman General Engine Discussion 6 05-11-2011 11:58 PM
TB3 - Connecting Rod kustomkb Team Builds 0 07-15-2008 08:43 PM
TB1 - Connecting Rods BobWarfield Team Builds 0 04-25-2008 02:54 PM
Split taper bushings for the Siamese Twin deere_x475guy Photos and Videos 12 12-29-2007 02:23 PM



Newest Threads






- Top - Member List