Spreader bracket compression tube frozen - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #11  
Old 07-15-2009
AdamLein's Avatar
Senior Member
 
Join Date: Nov 2007
Location: SF Bay area
Posts: 1,862
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 8
AdamLein will become famous soon enough
Happily I've just run into exactly the same problem today. Exactly exactly (same boat even). I've started drilling into available end of the bolt but it's taking a long time and it's a real PITA... we've already broken one titanium drill bit. Hopefully not much more to go before I can turn the mast over and grind off the hex cap on the other side.

Couple of questions for you since you've been through it:

1) About how long did it take you to drill out the threaded end of the bolt? How deep did you go?

2) What setup did you use to grind the hex cap off the cap end of the bolt? I'll probably have access to an angle grinder. I don't think I'll have enough clearance to get between the cap and the tang. I'm considering grinding right through the old cast aluminum bracket to essentially cut off the bolt.

3) When the little bits of burning metal are flying around, how did you prevent them from getting all over your gelcoat (and your neighbors' gelcoat)?

4) Any other gotchas during the bracket replacement after that?

I'd say, "Thanks for having this problem three months ago," but I wouldn't wish this work on anybody. Thanks for solving this problem and posting about it, I guess

p.s. I can confirm that on the C27 the tang bolt hole is wide enough for the bolt, but not for the compression tube. The instructions that come with the spreader bracket retrofit kit from Catalina Direct suggest cutting a notch into a 20-or-so-foot-long PVC pipe and using that to feed the tube into the mast.
__________________
s/v Essorant
1972 Catalina 27
Reply With Quote Quick reply to this message Share with Facebook
  #12  
Old 07-15-2009
Senior Member
 
Join Date: Dec 2008
Posts: 114
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
donlofland is on a distinguished road
1)I was using new drills, and it took 5-10' to drill the threaded end of the bolt down to just inside the inside wall of the mast. 2)I used a Saws All (?spelling) to cut the hex head off the bolt between the aluminum spreader bracket and the hex head. I found SS bolts cut fairly easily but are difficult to drill! Then ground it down flush with the outside of the mast and drilled until it fell inside the mast-by some fortuitous quirk of fate, the bolt did not spin as I drilled it. For grinding I used a grinding wheel on my drill...3) the mast was in my back yard, so flying bits of metal were not a problem. 4) the mast was stripped down to nothing but a bare extrusion, and the PVC pipe routine worked, but was very tricky. And they're right about not over-torquing the upper spreader bracket bolt-it's easy to dimple the mast! 5) Hope this helps! Good luck!
Reply With Quote Quick reply to this message Share with Facebook
  #13  
Old 07-15-2009
AdamLein's Avatar
Senior Member
 
Join Date: Nov 2007
Location: SF Bay area
Posts: 1,862
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 8
AdamLein will become famous soon enough
That does help a lot. I have noticed that newer bits drill in pretty quickly... but then my newer bolt blew up and I switched to an older bit which was not significantly sharper than my thumb. I guess I'll grab some new bits and grinding wheels so that I'm not dependent on my friend's angle grinder.

As for the metal bits, I'm thinking of draping a wet bed sheet around the A-frame, which is still in place.

Thanks for your input!
__________________
s/v Essorant
1972 Catalina 27
Reply With Quote Quick reply to this message Share with Facebook
  #14  
Old 07-15-2009
Senior Member
 
Join Date: Apr 2008
Location: Melbourne, Florida
Posts: 418
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
fullkeel7 is on a distinguished road
Adam, If you are aware of this already, my apologies. In addition to using a sharp or new bit, the key to drilling SS or any hardened steel, is to keep the bit speed to a minimum. Heat is your worst enemy, so trying to drill into steel at the same speed as say aluminum, will only prematurely dull the bit and harden the steel. A little machining oil applied by a helper while drilling helps to cool things down as well.
Reply With Quote Quick reply to this message Share with Facebook
  #15  
Old 07-15-2009
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
In addition to what FULLKEEL7 said, you want to have the bit turning slowly enough that you can watch the individual flutes rotating... if you can't you're probably turning it too fast.
__________________
Sailingdog

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

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #16  
Old 07-16-2009
AdamLein's Avatar
Senior Member
 
Join Date: Nov 2007
Location: SF Bay area
Posts: 1,862
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 8
AdamLein will become famous soon enough
Yep. My crew is much more tool-savvy than I am and they gave the same advice. We started off going slow and being generous with the oil. I found that the bit seemed to cut better (felt like it was cutting) at the lower speeds. However in spite of all the concern about heat, the bit never heated up... I think the mast might act as an enormous heat sink.

Anyway I think now it's time for a couple of sharp new bits to go at it... I feel like I'm not really making progress anymore.
__________________
s/v Essorant
1972 Catalina 27
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Outboard Motor Bracket "not for use with 4 stroke engines" petertribo Gear & Maintenance 13 2 Weeks Ago 11:55 AM
Mast, spreader, shroud design, help Talisman66 Gear & Maintenance 1 11-23-2008 04:41 AM
Getting a compression tube into mast sailboy21 Gear & Maintenance 1 08-17-2008 10:54 PM
Broken Spreader augbug27 Gear & Maintenance 49 07-09-2007 09:47 PM
Packing gland coming out of top of rudder tube! duffer1960 Gear & Maintenance 2 08-25-2005 09:26 PM


All times are GMT -4. The time now is 03:57 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.