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michla
Samba Member
Joined: January 17, 2003
Posts: 331
Location: Wasilla, AK (yes, there's drag racing up here !)
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 Posted: Wed Feb 03, 2010 12:33 am Post subject: Polishing the ring and pinion ? |
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To help alleviate stress-risers, I've always polished the sharp root edges of the pinion and ring gear root teeth with a fine emory bit in a Demel tool, but has anyone ever tried polishing the teeth faces ? I mean the side of the teeth that mesh.
Yes, I realize removing too much material can change the mesh of the gear teeth, but we're only talking POLISHING--not using an abrasive. |
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Bruce
Samba Member
Joined: May 16, 2003
Posts: 17290
Location: Left coast, Canada
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| Posted: Wed Feb 03, 2010 12:46 am Post subject: |
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Doing anything to the ring gear is a waste of time. The teeth on the pinion always crack first.
Many stock R&Ps that are used have teeth that are already polished from use. Cracks don't originate from the center of the tooth contact. Polishing there won't help.
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| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
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michla
Samba Member
Joined: January 17, 2003
Posts: 331
Location: Wasilla, AK (yes, there's drag racing up here !)
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| Posted: Wed Feb 03, 2010 12:53 am Post subject: |
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| thanx |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Wed Feb 03, 2010 3:40 am Post subject: |
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| Bruce wrote: |
| Polishing there won't help. |
That's what SHE said! 
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Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747
| Glenn wrote: |
| satterley_sr wrote: |
I just wanted to bitch but I'm getting no sympathy. |
Welcome to the Samba. |
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dragster3
Samba Member
Joined: April 20, 2009
Posts: 54
Location: West Palm Florida
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| Posted: Wed Feb 03, 2010 4:28 am Post subject: |
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if pinion depth is wrong, the ring gear will eventually become sharp on the edges from the gear running off, aka heel and toe.
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1963 chopped bug for sale
1998 tdi
2006 tdi |
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nsracing
Samba Member
Joined: November 16, 2003
Posts: 9481
Location: NOVA
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| Posted: Wed Feb 03, 2010 7:10 am Post subject: |
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DO NOT TOUCH THE FLANKS!
These surfaces are lapped from factory to certain tolerance. If you go grinding by hand on the tooth flanks, might as well throw them in the trash as you just made them useless.
Are they not smooth enough for you? YOu got too much time on your hands, man. Why don't you grease the CV joints or the front axle bearings or something?  |
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michla
Samba Member
Joined: January 17, 2003
Posts: 331
Location: Wasilla, AK (yes, there's drag racing up here !)
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| Posted: Wed Feb 03, 2010 8:28 am Post subject: |
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I wasn't taking about "grinding", just polishing the tooth faces. But that's why I asked here---figured it could spell trouble doing so.
No, I'm just a perfectionist, that's all !  |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Wed Feb 03, 2010 12:43 pm Post subject: |
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| michla wrote: |
| No, I'm just a perfectionist, that's all ! |
OCD, more like.
_________________
Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747
| Glenn wrote: |
| satterley_sr wrote: |
I just wanted to bitch but I'm getting no sympathy. |
Welcome to the Samba. |
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michla
Samba Member
Joined: January 17, 2003
Posts: 331
Location: Wasilla, AK (yes, there's drag racing up here !)
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| Posted: Wed Feb 03, 2010 1:26 pm Post subject: |
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Your Mama's Mama !!!  |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Wed Feb 03, 2010 1:30 pm Post subject: |
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She don't polish things that ought not be polished, so there. 
_________________
Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747
| Glenn wrote: |
| satterley_sr wrote: |
I just wanted to bitch but I'm getting no sympathy. |
Welcome to the Samba. |
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veedubcrazy
Samba Member
Joined: February 14, 2005
Posts: 2130
Location: La Porte, Tx.
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| Posted: Wed Feb 03, 2010 1:40 pm Post subject: |
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| miniman82 wrote: |
| She don't polish things that ought not be polished, so there. |
Doing your best to bring back the rants, I see... 
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1967 Deluxe Sedan |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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veedubcrazy
Samba Member
Joined: February 14, 2005
Posts: 2130
Location: La Porte, Tx.
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| Posted: Wed Feb 03, 2010 2:48 pm Post subject: |
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^^^ Yeah, that...
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1967 Deluxe Sedan |
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[email protected]
Samba Member
Joined: May 17, 2003
Posts: 4863
Location: Harmony, PA
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Jake Raby
Samba Member
Joined: August 23, 2003
Posts: 7433
Location: Aircooled Heaven USA
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| Posted: Wed Feb 03, 2010 9:56 pm Post subject: |
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I use REM/ Isotropic Super finishing with my engines quite a bit. We've also used it for ring and pinions for road race cars with great results.
_________________
Jake Raby
Raby Engine Development
www.rabyenginedevelopment.com
"I've never given anyone Hell, I just told them the truth and they thought it was Hell" |
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nsracing
Samba Member
Joined: November 16, 2003
Posts: 9481
Location: NOVA
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| Posted: Wed Feb 03, 2010 11:34 pm Post subject: |
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Isotropic superfinishing is the way to go.
I would love to have my own giant vibratory finisher. |
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[email protected]
Samba Member
Joined: May 17, 2003
Posts: 4863
Location: Harmony, PA
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| Posted: Thu Feb 04, 2010 5:56 pm Post subject: |
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| Jake Raby wrote: |
| I use REM/ Isotropic Super finishing with my engines quite a bit. We've also used it for ring and pinions for road race cars with great results. |
I was hoping you would chime in Jake. I seem to remember reading that you used this process, along with coatings, and cryo stuff. I'm lucky enough to have a shop the does the REM Process very close to me, and was thinking of trying it out on some tranny parts. Did you use the REM Process on just the ring & pinion, or did you use it on any of the drive gears, or diff parts as well? |
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millerje78
Samba Amishman
Joined: October 16, 2005
Posts: 2445
Location: Holmes County, Ohio
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| Posted: Thu Feb 04, 2010 7:57 pm Post subject: |
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| Jake Raby wrote: |
I use REM/ Isotropic Super finishing with my engines quite a bit. We've also used it for ring and pinions for road race cars with great results.
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that looks like a surgeons instrument table.
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always seeking a better way
my 73 standard project
do your research, consult with experts, and buy quality parts. you won't be sorry |
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Jake Raby
Samba Member
Joined: August 23, 2003
Posts: 7433
Location: Aircooled Heaven USA
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| Posted: Thu Feb 04, 2010 9:26 pm Post subject: |
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| millerje78 wrote: |
| Jake Raby wrote: |
I use REM/ Isotropic Super finishing with my engines quite a bit. We've also used it for ring and pinions for road race cars with great results.
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that looks like a surgeons instrument table. |
Thats my old operating room...
Here is the current one 
_________________
Jake Raby
Raby Engine Development
www.rabyenginedevelopment.com
"I've never given anyone Hell, I just told them the truth and they thought it was Hell" |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Fri Feb 05, 2010 5:58 am Post subject: |
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Hey Jake ,The local Health Dept. would be proud That's cleaner then most restaurants 
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'Black Ice'Drag Buggy 'Turbo'
Rail Buggy 1915 turbo
76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works" |
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