CV slide lubrication
Moderators: CYBORG, Oldewing, robin1731, Forum Moderators
- Norbert R
- Gold Member
- Posts: 1373
- Joined: Wed Apr 03, 2013 3:13 pm
- Location: Johannesburg South Africa
CV slide lubrication
hi all,
Rebuilding my carbs with Randakk kit - have the CV slides really clean and smooth, great action, but a little dry because they are now so clean.
Question: can I lube the CV slide shaft, and with what ?
Thanks in advance !
Rebuilding my carbs with Randakk kit - have the CV slides really clean and smooth, great action, but a little dry because they are now so clean.
Question: can I lube the CV slide shaft, and with what ?
Thanks in advance !
- CYBORG
- Moderator
- Posts: 24537
- Joined: Mon Jan 14, 2008 12:52 pm
- Location: Muskegon mich
Re: CV slide lubrication
i don't lube them, cause the lube can draw dirt and make them stick. install the spring in the cap and the piston on the top of it. the piston should go done easy, and come back up on its own. if so, good to go
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
1977 custom with 1200 engine
1985 gl1200
- ericheath
- Honored Life Member
- Posts: 9580
- Joined: Wed Jul 29, 2009 11:20 am
- Location: Winnipeg, Manituba
Re: CV slide lubrication
Most of the veterans here adhere to no lube, but one person a few years back claimed the portion in the cap was a permeable material (brass?) and soaked them overnight in a light oil, then wiped as clean as possible before reassembly. I am not sure if that was good info or not.
Whatever I suggest here should be given ample time for a moderator to delicately correct. I apologize in advance.
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
- backyardbob
- High Mileage Guru
- Posts: 778
- Joined: Sat Feb 09, 2008 2:30 pm
- Location: madoc, ontario
Re: CV slide lubrication
the permeable material is known as oilite. consists of zillions of tiny brass balls pressed together and the spaces in between the balls filled with oil. also commonly used for small electric motor bearings and such. If that is in fact what they used, after 25 years the oil is depleted.
i finally made it past the junkyard dogs!!
-
- Gold Member
- Posts: 1476
- Joined: Fri Feb 22, 2008 10:44 pm
- Location: Springfield, MO
Re: CV slide lubrication
If the slides have "great action" without a lube, what's the point? Just something more to gum up the works. There are Teflon sprays, but don't know if that would be ideal either. I suppose by now you know we are not to swap out slides, as they are hand-fitted at the factory by little old elves. I have swapped out a couple that had their skirts blown off by backfiring, but made sure they were not binding and fit good.
The difficult can be done in a day. The impossible takes a little longer, if you don't know it can't be done.
'75 GL YelloWing, '73 Norton Commando, '79 CB750, '80 Fiat Spyder, '83 Silverado w/ BB Cad, to name a few.
'79 Black Hondaline/Vetter bagger Tourer
'76 Yello Café to be
'83 CX650C Needs Work
'83 CX650C #2 Daily Rider
'79 Yamaha XS750
10 others in the project/parts pile
'75 GL YelloWing, '73 Norton Commando, '79 CB750, '80 Fiat Spyder, '83 Silverado w/ BB Cad, to name a few.
'79 Black Hondaline/Vetter bagger Tourer
'76 Yello Café to be
'83 CX650C Needs Work
'83 CX650C #2 Daily Rider
'79 Yamaha XS750
10 others in the project/parts pile
- pistolpete
- Titanium Member
- Posts: 439
- Joined: Wed May 27, 2009 8:57 pm
- Location: USA
Re: CV slide lubrication
Norbert R,
Clean and dry is correct from my perspective.
I would however use Marine Grade Stabil in every tank if you feel that a little lube is necessary.
Pete
Clean and dry is correct from my perspective.
I would however use Marine Grade Stabil in every tank if you feel that a little lube is necessary.
Pete
Pistol
- Norbert R
- Gold Member
- Posts: 1373
- Joined: Wed Apr 03, 2013 3:13 pm
- Location: Johannesburg South Africa
Re: CV slide lubrication
Thank you one and all!
@ Missourimike - so backfiring blows the skirts off ! I had a slide brocken like that and couldnt think how on earth that could happen, real interesting fact. I have two 764A racks so just swapped out a cap and slide pair.
@ Missourimike - so backfiring blows the skirts off ! I had a slide brocken like that and couldnt think how on earth that could happen, real interesting fact. I have two 764A racks so just swapped out a cap and slide pair.
- Toehead
- True Blue Steel Biker
- Posts: 2139
- Joined: Fri Jul 15, 2011 3:10 pm
- Location: Mendon, MA
Re: CV slide lubrication
I tend to run a little stabil and a little MMO in every tank to keep everything lubed. Since doing this, I haven't had a sticking slide yet.
YMMV
YMMV
2012 Golf TDI, fast and frugal oil burner
1980 CX500C, All around road warrior (Sold)
1975 TS125 (Sold), old smoker
1977 naked GL1000, Highway cruiser
'81 GL1100 14,000 (reconditioned and sold)
'81 GL1100 50,000 miles (under construction)
2X 1981 CM400 beginner bike (sold)
1980 CB750C (sold)
1994 Virago 750 (Wifey's bike)
'76 GL1000 Sulphur Yellow (Megasquirted efi build) http://www.ngwclub.com/forum/viewtopic.php?f=47&t=59774
1980 CX500C, All around road warrior (Sold)
1975 TS125 (Sold), old smoker
1977 naked GL1000, Highway cruiser
'81 GL1100 14,000 (reconditioned and sold)
'81 GL1100 50,000 miles (under construction)
2X 1981 CM400 beginner bike (sold)
1980 CB750C (sold)
1994 Virago 750 (Wifey's bike)
'76 GL1000 Sulphur Yellow (Megasquirted efi build) http://www.ngwclub.com/forum/viewtopic.php?f=47&t=59774
- Norbert R
- Gold Member
- Posts: 1373
- Joined: Wed Apr 03, 2013 3:13 pm
- Location: Johannesburg South Africa
Re: CV slide lubrication
Carbs and how they work are still a great mystery to me - how would the lubrication get from the fuel onto the inner tube/piston of the CV slide to lubricate them? I thought there's just air/vacuum in that area?
- rcmatt007
- Treasurer
- Posts: 31305
- Joined: Fri Oct 21, 2005 12:48 pm
- My Album: http://www.ngwclub.com/gallery/v/wingmans/rcmatt007/
- Location: New River Valley, Virginia
Re: CV slide lubrication
I think it is the MMO fairies the get it there
-Rodger-
all it takes for evil to prosper is the want of a few good men to do nothing-Edmund Burke
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978, BOTM June 2015 de-evolving this very moment viewtopic.php?f=30&t=65511
76 Ltd "cookies bike" ALMOST DONE
79 project, finished, FOR SALE
'86 1200 (Beth's)(FOR SALE) with motorvation sidecar (sidecar sold) , July 2017 BOTM
'17 HD Road king and 08 HD Heritage softail (Beth's) (FOR SALE). I guess you can say we have MBS
all it takes for evil to prosper is the want of a few good men to do nothing-Edmund Burke
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978, BOTM June 2015 de-evolving this very moment viewtopic.php?f=30&t=65511
76 Ltd "cookies bike" ALMOST DONE
79 project, finished, FOR SALE
'86 1200 (Beth's)(FOR SALE) with motorvation sidecar (sidecar sold) , July 2017 BOTM
'17 HD Road king and 08 HD Heritage softail (Beth's) (FOR SALE). I guess you can say we have MBS
- pistolpete
- Titanium Member
- Posts: 439
- Joined: Wed May 27, 2009 8:57 pm
- Location: USA
Re: CV slide lubrication
It gets some moisture (stabil, fuel, MMO etc.) When the carbs are being choked.
Pete
Pete
Pistol
- Norbert R
- Gold Member
- Posts: 1373
- Joined: Wed Apr 03, 2013 3:13 pm
- Location: Johannesburg South Africa
Re: CV slide lubrication
Uhh.......,so it's not the fairies ?pistolpete wrote:It gets some moisture (stabil, fuel, MMO etc.) When the carbs are being choked.
Pete
- CYBORG
- Moderator
- Posts: 24537
- Joined: Mon Jan 14, 2008 12:52 pm
- Location: Muskegon mich
Re: CV slide lubrication
thanks for the info Pete. I had wondered about that myself
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
1977 custom with 1200 engine
1985 gl1200
- Hal
- True Blue Steel Biker
- Posts: 2822
- Joined: Fri Sep 24, 2010 5:00 pm
- Location: France
Re: CV slide lubrication
The Keihin Carb Fairies do work in mysterious ways, but they recommend Stabil and MMO in the fuel, just like Pistol Pete and Randakk do.
"The Moving Finger writes, and having writ, moves on,
nor all your Piety nor Wit
can lure it back to cancel half a line...
so....probably best use Tipp-Ex in future?"
1977 GL1000 in bits
1978 SR 500 Yam
1995 Harley Sportster/Buell street-tracker
1992 Grinnall Scorpion SC3 prototype
2002 Caterham SV 220 Evo (4 wheeled motorcycle)
Hal's Nalbum
nor all your Piety nor Wit
can lure it back to cancel half a line...
so....probably best use Tipp-Ex in future?"
1977 GL1000 in bits
1978 SR 500 Yam
1995 Harley Sportster/Buell street-tracker
1992 Grinnall Scorpion SC3 prototype
2002 Caterham SV 220 Evo (4 wheeled motorcycle)
Hal's Nalbum
- ericheath
- Honored Life Member
- Posts: 9580
- Joined: Wed Jul 29, 2009 11:20 am
- Location: Winnipeg, Manituba
Re: CV slide lubrication
When you think about it, the slide is hanging down in the throat getting some mixture on it. Then it's sucked upwards. It's tight, but plenty of room for some to be pulled into the lower chamber. The next time it's sucked up, it would pull some around the slide's outer diameter. From there it can get pulled onto the slide and the bore. I have one of my 77's that is addicted to MMO, if it doesn't get it, it complains a lot. That said, I think I remember Mike Nixon, saying the cleaner you keep them, the better.
Whatever I suggest here should be given ample time for a moderator to delicately correct. I apologize in advance.
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
77 WING, 1200 engine with 77 heads, cams, gl1100 foot pegs, Magna V65 front end, 764A carbs, [-gone Suzuki M109 monoshock--, replaced with gl1100 shocks] gl 1200 swing arm, gl1500 final drive, wheel and rear brakes Valkyrie seat, Meanstreak tank, Sportster pipes, Power Arc ignition off crank.
77 Wing. black
83 Wing, in pieces
"Continuing education is important even if the subject matter is fairly useless (as in this case)."---Greg Foresi
-
- Similar Topics
- Replies
- Views
- Last post
-
- 8 Replies
- 796 Views
-
Last post by Shadowjack
-
- 4 Replies
- 461 Views
-
Last post by cfairweather
-
- 11 Replies
- 750 Views
-
Last post by Shadowjack
-
- 20 Replies
- 681 Views
-
Last post by Old Fogey
-
- 6 Replies
- 333 Views
-
Last post by Solina Dave