Alternative to drilling Slave Cylinder Flange - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 6 Old Feb 14th, 2007, 11:50 pm Thread Starter
Senior Member
 
JPSpen's Avatar
 
Join Date: Jul 2005
Location: Jones, OK, USA
Posts: 3,525
Alternative to drilling Slave Cylinder Flange

I'm just thinking out loud here, So I need to bounce this off the folks who've had the bike apart. I've not seen this part..Yet !

Paging David Shealey

I just was thinking that some may be fearfull of drilling a hole in the flange and having it come out in the wrong place.

What if you used a cutoff tool and just cut a groove in the bottom of the flange into the area where it would drain....It would seem to me that this would work as well as drilling a hole and possibly safer than screwing up and drilling too deep or too shallow..

Is this a plausible idea ???

Input needed....This is on my list this month while Lola is down for maintenance.


Thanks

John

Live and direct from the new earthquake capitol of the U.S. Jones, Oklahoma
08 Can-Am Spyder (Miss Lindy's)
03 R1200CLC Capri Blue "Flipper"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

01 R1100RT Glacier Blue "Lucky"
91 R100GS "It'sNotAMoneyPit"
The voices in my head may not be real, But they have some good ideas!


"I like the wind in my face and Boobies on my back. No, Wait, I got that backwards"

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
JPSpen is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old Feb 15th, 2007, 12:21 am
Senior Member
 
sheldan2's Avatar
 
Join Date: Mar 2005
Location: kings mountain, NC, usa
Posts: 2,099
Smile

As someone who has done this a few times, your suggestion might work, but when you get to take it all apart, and you pull the cylinder out you will see it is probably easier to just drill a hole ,you can see where you need to go and where the drill bit will come out. A whole lot less work than trying to cut a flange out.
sheldan2 is offline  
post #3 of 6 Old Feb 15th, 2007, 1:28 am
IBR# 366
 
meese's Avatar
 
Join Date: Apr 2002
Location: West Linn, OR
Posts: 16,442
Garage
I agree with Mike. A face slot would work, but once you get the slave out, it's pretty easy to see what's going on. And BMW even calls for a gasket there, just to be sure none of the leaking fluid escapes to a safe place.

The discussion we had at a recent tech session focused more on the possibility of drilling the weep hole without removing the slave cylinder. That may be possible for newer bikes, but once you get over 50K miles, you probably want to swap out the slave cylinder anyway.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles
'09 Magnesium Beige Metallic K13GT, 63K miles
'03 Anthracite Metallic K12LTC, 66K miles
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#143, IBA# 366, MOA# 111996, SCMA# 24032


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
meese is offline  
 
post #4 of 6 Old Feb 15th, 2007, 9:57 am Thread Starter
Senior Member
 
JPSpen's Avatar
 
Join Date: Jul 2005
Location: Jones, OK, USA
Posts: 3,525
Thanks

Thanks Ken, Mike

Just one of those things that goes flying through my mind....

Bike had a new clutch at 32K so I'm hoping the slave was changed at that time..
Don't know where the work was done so I can't go back and check up on it..

That area of the bike is pretty greasy, But right now I'm thinking it's shock oil..

Bout the only thing up there that could get the back of the slave cyl area greasy..


Wish I had the bucks for new shocks while I got her apart...

Oh well, next year will come around..

Thanks again

John

Live and direct from the new earthquake capitol of the U.S. Jones, Oklahoma
08 Can-Am Spyder (Miss Lindy's)
03 R1200CLC Capri Blue "Flipper"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

01 R1100RT Glacier Blue "Lucky"
91 R100GS "It'sNotAMoneyPit"
The voices in my head may not be real, But they have some good ideas!


"I like the wind in my face and Boobies on my back. No, Wait, I got that backwards"

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
JPSpen is offline  
post #5 of 6 Old Feb 15th, 2007, 10:29 am
Senior Member
 
dshealey's Avatar
 
Join Date: Apr 2002
Location: Dandridge (Near Knoxville), TN, USA
Posts: 12,165
Quote:
Originally Posted by JPSpen
I'm just thinking out loud here, So I need to bounce this off the folks who've had the bike apart. I've not seen this part..Yet !

Paging David Shealey

I just was thinking that some may be fearfull of drilling a hole in the flange and having it come out in the wrong place.

What if you used a cutoff tool and just cut a groove in the bottom of the flange into the area where it would drain....It would seem to me that this would work as well as drilling a hole and possibly safer than screwing up and drilling too deep or too shallow..

Is this a plausible idea ???

Input needed....This is on my list this month while Lola is down for maintenance.


Thanks

John
Drilling the drain hole is still probably the best way to go. The nose of the cylinder is not tight in the bore of the tranny housing, but there is not a lot of space around it. I would want the drain path to be as close to the nose of the cylinder as I can get it. If the leak is slow, then just cutting out the lower portion of the gasket to allow it to drain out between the cylinder flange and tranny boss would likely work. However, if the slave fails pretty drastically, as many do, the flow of fluid may overwhelm a small or tortuous drain path and still be forced forward to the clutch.

I don't want to achieve immortality through my work...I want to achieve it through not dying.

David Shealey
Dandridge, TN
EX: '01 Black LT, BAT BYKE (Totaled at 110,000 miles)
IBA SS, BB, BBG, 10/10ths.
No bike now, but maybe in the future.
dshealey is offline  
post #6 of 6 Old Feb 15th, 2007, 3:30 pm
Senior Member
 
Zotter's Avatar
 
Join Date: Mar 2005
Location: Casper, WY, USA
Posts: 1,742
Think stresses too. Nice round holes pass stress around them.

Straight lines tend to cause stress points and can lead to cracks.

Cutting a slot:
1 - you're breaking the circle (mounting face). Mount is now weaker. (ok, not much, but it's there)
2 - you're weakening the cylinder. Continuing the 'breaking of the circle' down the length of the cylinder. Of course, further you go, worse it'll be.
3 - you're introducing stress points (at least at the end of the slot) that may lead to more failures.

At best, it'd work
Maybe it'll just distort the cylinder over time
at worst - maybe it'd lead to splitting the cylinder altogether (ok, that's a bit of a reach - but the theory is there)

From that viewpoint alone - let alone the muss and bother of getting there to do it. Drilling a small, round, weep hole away from the mounting flange (body of cylinder) seems like a MUCH better idea all around.

Tate

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

02 Mauve - my 'Light Truck'
Wyoming Immigration Officer, Cyberhiway tour guide and
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Zotter is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Slipping Clutch - Clutch Slave Cylinder lhendrick K1200LT 24 Mar 29th, 2009 8:02 pm
Slave Cylinder Drilling Procedure kevincook K1200LT 21 Oct 17th, 2008 3:58 pm
Slave Cylinder Drilling Procedure??? kevincook K1200LT 31 Sep 9th, 2006 11:50 pm
Tech Session in NY for Slave Cylinder Drilling kevincook Mid West 1 Sep 5th, 2006 9:59 am
Tech Session for Slave Cylinder Drilling? kevincook North East 13 Aug 13th, 2006 12:13 pm

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome