AzBaja.com, Home of the VW Baja Bug  
Toggle ContentToggle Content
Toggle Content AzBaja Site info

Welcome Anonymous

Nickname
Password

Membership:
Latest: ecthemc
New Today: 1
New Yesterday: 0
Overall: 3567

People Online:
Members: 0
Visitors: 104
Total: 104
Who Is Where:
 Visitors:
01: AMAZON.com
02: Baja Forums
03: Baja Forums
04: Baja Forums
05: Baja Forums
06: AMAZON.com
07: AMAZON.com
08: Baja Forums
09: AMAZON.com
10: AMAZON.com
11: Event Calendar
12: AMAZON.com
13: AMAZON.com
14: AMAZON.com
15: Baja Forums
16: AMAZON.com
17: AMAZON.com
18: Baja Forums
19: Baja Forums
20: AMAZON.com
21: Baja Forums
22: Baja Forums
23: Baja Forums
24: AMAZON.com
25: Baja Forums
26: Baja Forums
27: Baja Forums
28: Event Calendar
29: AMAZON.com
30: Baja Forums
31: AMAZON.com
32: Baja Forums
33: Baja Forums
34: Baja Forums
35: AMAZON.com
36: AMAZON.com
37: Baja Forums
38: Baja Forums
39: AMAZON.com
40: AMAZON.com
41: Baja Forums
42: Baja Forums
43: AMAZON.com
44: Event Calendar
45: AMAZON.com
46: AMAZON.com
47: AMAZON.com
48: AMAZON.com
49: AMAZON.com
50: AMAZON.com
51: AMAZON.com
52: AMAZON.com
53: AMAZON.com
54: AMAZON.com
55: AMAZON.com
56: Baja Forums
57: Baja Forums
58: Baja Forums
59: AMAZON.com
60: AMAZON.com
61: AMAZON.com
62: AMAZON.com
63: AMAZON.com
64: Baja Forums
65: AMAZON.com
66: AMAZON.com
67: AMAZON.com
68: AMAZON.com
69: AMAZON.com
70: Baja Forums
71: Baja Forums
72: Baja Forums
73: AMAZON.com
74: AMAZON.com
75: Drivers
76: Event Calendar
77: AMAZON.com
78: AMAZON.com
79: AMAZON.com
80: Baja Forums
81: Baja Forums
82: Baja Forums
83: AMAZON.com
84: Baja Forums
85: AMAZON.com
86: Baja Forums
87: Baja Forums
88: Event Calendar
89: AMAZON.com
90: AMAZON.com
91: AMAZON.com
92: AMAZON.com
93: AMAZON.com
94: AMAZON.com
95: AMAZON.com
96: Baja Forums
97: Baja Forums
98: AMAZON.com
99: Baja Forums
100: Baja Forums
101: AMAZON.com
102: Baja Forums
103: Baja Forums
104: Baja Forums

Staff Online:

No staff members are online!

Toggle Content GPS

Baja Forums -:- AzBaja.com Members -:- Projects and Builds -:- BugLife
Amazon Store

BugLife
Tell us about your Project, Were you at in tyour build. Post Pictures etc.
Users browsing this topic: None
Post new topic Reply to topic Printer Friendly Page
View previous topic :: View next topic
Author Message
BugLife
Private 1st class
Private 1st class

BugLife

Offline

Joined: Feb 16, 2010
Posts: 73
Location: Canton, Ohio
Karma: +2

Post Post subject: BugLife
Posted: Fri Mar 25, 2011 03:17 PM
Reply with quote

Never heard of this....using needle bearings on the rod jurnal's. Whats the skinny on this setup?

Back to top
View user's profile Yahoo Messenger
AzBaja
1st SGT.
1st SGT.

AzBaja

Offline

Joined: Mar 06, 2006
Posts: 4512
Location: Mesa, AZ
Officers (Dues)
Recruit
Karma: +16

Post Post subject: BugLife
Posted: Mon Mar 28, 2011 12:40 PM
Reply with quote

Not a good idea, The flat baerings like we have now ride on a film of oil that is under presure from the oil pump. You have a large surface area to ride on much like how a hover craft floats over the ground there should never be any metal to metal contact.

Roller bearings have metal to metal contact and do to the way the rods cycle up and down it will pound the crank. You will also need a lot more oil to keep the bearings from burning up. A little hick up in the oil flow and you have burnt up your bearings. Questions on that ask some guys that loose oil flow to a turbo and see how fast the turbo burns up it's bearings.

The roller bearings that would also add to the rotating mass of the internals, not a good thing.

On the other hand like in wheels the roller bearings move at a slower speed and have a more or less evan rotation on them unlike the pounding the bearings would get in a rod.

You could probaly get away with roller bearings in the wrist pin, but your still giving them a pounding with every power stroke. I have heard that some cams have roller bearings and this is do to the evan rotation on the cam.

If I recal Porche at one time had some sort of roller bearings on the carnk in some cars, but to run them you needed a lot of oil and you had to rev the engine at a higher RPM to keep oil on the bearings. Seems the bearings did not like the slower speed at idle were oil flow dropped off.


_________________
There has been a hostile takeover by an extreme militant group with an unknown agenda, I have lost complete control of AzBaja.com..... ︻┳デ═一

AzBaja.com founding officer and CEO



www.scoutmagazine.com
www.IMRRO.com
Back to top
View user's profile Visit poster's website
BugZyla.com
1st SGT.
1st SGT.

BugZyla.com

Offline

Joined: Mar 20, 2006
Posts: 4377
Location: Mexicopa County, Barackistan
Karma: +35

Post Post subject: Re: BugLife
Posted: Mon Mar 28, 2011 02:30 PM
Reply with quote

Actually VW produced some industrial motors that had roller bearings. The crankshaft was made of multiple pieces in order to slide the bearings on the journals and then the crank was pressed together. Not possible to do with a standard VW crankshaft that most of us have seen.


_________________
Bugzyla Fabrication
480-444-2501
www.bugzyla.com


132 (O\!/O) VWs and counting since 1/2005

Hillary for PRISON 2016
Back to top
View user's profile Visit poster's website MSN Messenger
MojaveRacer208
Staff SGT.
Staff SGT.

MojaveRacer208

Offline

Joined: Oct 13, 2008
Posts: 711
Location: Lake LA - SoCal Mojave Desert
Karma: +9

Post Post subject: BugLife
Posted: Mon Mar 28, 2011 07:18 PM
Reply with quote

Roller bearings are normal in motorcycle engines, especially 2-strokes. In VWs, they've been used for high performance at least since the early 50s.

In 1952, my dad was working for a guy named Johnny Von Neuman, who was instrumental in importing VWs and Porsches into the US and was involved in getting VW Of America setup up and rolling. My dad's car at the time was a 52 Bug with an "Okrasa" engine. That was German Tuner version of a "25 horse" 1,100cc with a roller crank, high performance cam, dual port heads and dual carbs. He said that it screamed. High praise for a hot rod guy who was used to highly modified V8 powered cars, raced dry lakes, track roadsters and an Offy Midget in their heyday.

A roller crank can be a good thing. But make sure you know how the motor should go together before you toss it in.


_________________
Richard
A.R.T.S. Off Road Race Tech Inspection
M.O.R.E. / MDR
Back to top
View user's profile Send e-mail
AzBaja
1st SGT.
1st SGT.

AzBaja

Offline

Joined: Mar 06, 2006
Posts: 4512
Location: Mesa, AZ
Officers (Dues)
Recruit
Karma: +16

Post Post subject: BugLife
Posted: Mon Mar 28, 2011 10:48 PM
Reply with quote

You also need to remember that most motercycles are High RPM engines and a light internal roating mass. Most out boards use roller beraings in them too. But look at the loading your turning a prop or a small tire as in a motorcycle and your running somthing that runs at high RPMs.

The only other thing is if it was a good idea don't you think that some car maker would have decided to use this in full large scale production? I'm thinking there is a huge trade off in bearing life over the life time of the engine.

There is also some other eginering stuff the needs to be looked at.

ROI is not that good. better places to spend your money for better gains


_________________
There has been a hostile takeover by an extreme militant group with an unknown agenda, I have lost complete control of AzBaja.com..... ︻┳デ═一

AzBaja.com founding officer and CEO



www.scoutmagazine.com
www.IMRRO.com
Back to top
View user's profile Visit poster's website
BugLife
Private 1st class
Private 1st class

BugLife

Offline

Joined: Feb 16, 2010
Posts: 73
Location: Canton, Ohio
Karma: +2

Post Post subject: BugLife
Posted: Wed Mar 30, 2011 04:32 PM
Reply with quote

I wanted to post some pics of this crankshaft but I forgot how to do that...lol.
The rods are made on the crank.....with roller bearings, bronze coated.

Back to top
View user's profile Yahoo Messenger
Post new topic Reply to topic Printer Friendly Page

 Topics   Replies   Author   Views   Last Post 
Normal
No new posts VW Volkswagen & Baja Bug General Discussion BugLife 1 BugLife 1719 BugLife
 Fri Apr 15, 2011 06:46 PM 
JWHracing View latest post
No new posts New Members BugLife
Ware to put my full flow oil filter
3 BugLife 1882 BugLife
 Sat Feb 27, 2010 09:37 PM 
DONT View latest post
No new posts New Members BugLife
Findin the year of a longblock
[ Go to pageGo to page: 1, 2 ]
27 BugLife 10615 BugLife
 Fri Feb 26, 2010 03:49 PM 
BugLife View latest post
No new posts VW Volkswagen & Baja Bug General Discussion BugLife
Electrical
6 BugLife 3157 Re: BugLife
 Mon Feb 22, 2010 02:58 PM 
BugZyla.com View latest post
You cannot post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Toggle Content Picture Box

Toggle Content Great things to Buy

Toggle Content Other Sites

Toggle Content Parts - For your Car

If you see Errors please E-mail Eric (AT) AzBaja.com X XX XXX
azbaja.com Webutation

eXTReMe Tracker
XXXX
The logos and trademarks used on this site are the property of their respective owners
We are not responsible for comments posted by our users, as they are the property of the poster. Any use, commercial or educational, requires written permission from the author.
Interactive software released under GNU GPL, Code Credits, Privacy Policy