Hobie Cat Forums

It is currently Fri Aug 01, 2014 1:53 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Comptip replacement
PostPosted: Mon Mar 01, 2010 2:15 am 
Offline
Site Rank - Deck Hand

Joined: Wed Nov 25, 2009 8:22 pm
Posts: 2
I broke the comptip section of my H17 mast. I have a new one but the old one seems pretty firmly glued in place.

Any advice on the best way to get the remnants of the old fiberglass section out of the aluminium mast ?

Thanks
Allan


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Mon Mar 01, 2010 10:50 am 
Offline
Site Admin

Joined: Tue May 27, 2003 12:44 pm
Posts: 8918
Location: Oceanside, California
If broken off flush... you need to carve out the foam and then cut the fiberglass from the inside to collapse within the aluminum extrusion.

_________________
Matt Miller
Director of Parts and Accessory Sales
Hobie Cat USA


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Mon Mar 01, 2010 11:53 am 
Offline
Hobie Approved Guru

Joined: Mon Jul 14, 2003 7:11 pm
Posts: 4580
Location: Detroit, MI
mmiller wrote:
If broken off flush... you need to carve out the foam and then cut the fiberglass from the inside to collapse within the aluminum extrusion.


Which means you're going to chip it out in many little pieces. Hammer and chisel - gently. Don't mess up the extrusion.


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Mon Mar 01, 2010 12:34 pm 
Offline
Site Rank - Old Salt

Joined: Mon Sep 20, 2004 12:36 pm
Posts: 758
Location: Tri-Cities, WA
When I broke my mast a few years back I wanted to keep the comp tip. I removed mine unharmed by drilling off the heads of the rivets holding on the tang and used a punch to push the rivet bodies into the comptip. Then I used a heat gun to heat the aluminum mast around the comp tip to soften the bondo the factury used to seat the comptip into the extrusion. The comp tip pulled right out. :wink:


Last edited by fastcat on Fri Mar 05, 2010 9:02 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Mon Mar 01, 2010 8:30 pm 
Offline
Hobie Approved Guru

Joined: Mon Jul 14, 2003 7:11 pm
Posts: 4580
Location: Detroit, MI
fastcat wrote:
When I broke my mast a few years back I wanted to keep the comp tip. I removed mine unharmed by drilling off the heads of the rivits holding on the tang and used a punch to push the revit bodies into the comptip. Then I used a heat gun to heat the aluminum mast around the comp tip to soften the bondo the factury used to seat the comptip into the extrusion. The comp tip pulled right out. :wink:


That works fine if there's something to grab on to - like a whole Comptip. Even if you've got a bit of a stub left of the Comptip, you could drill a hole transversely through the stub and string a piece of line through it to help pull it out.


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Mon Mar 01, 2010 8:55 pm 
Offline
Site Rank - Deck Hand

Joined: Wed Nov 25, 2009 8:22 pm
Posts: 2
Thanks for the ideas. I have about 2 inches of comptip sticking out of the mast.

I'm going to drill the foam out and cut a groove down the inside of the fiberglass section with a hacksaw blade, then heat the aluminium and try to pull and prise the thing out.

Ill let you know how it goes.


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Fri Mar 05, 2010 9:10 am 
Offline
Site Rank - Old Salt

Joined: Mon Sep 20, 2004 12:36 pm
Posts: 758
Location: Tri-Cities, WA
:idea: If you didn't have enough comp tip to pull on (or horizontally through) , you could drill a hole down through the center of the comp tip (you would need a long bit) and insert a large moly bolt with a T handle attached to the other end to gain the purchase you would need to pull out the comp tip end from the extrusion. 8)


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Fri Mar 05, 2010 9:37 am 
Offline
Site Rank - Old Salt

Joined: Wed Jul 21, 2004 7:46 pm
Posts: 1468
Location: Santa Cruz
adornan wrote:
I'm going to drill the foam out and cut a groove down the inside of the fiberglass section with a hacksaw blade, then heat the aluminium and try to pull and prise the thing out.


+1

That's how I've done it several times. You're on the right track!

_________________
Sail Revolution
Join us on our new FB Page!


Top
 Profile  
 
 Post subject: Re: Comptip replacement
PostPosted: Fri Mar 05, 2010 8:45 pm 
Offline
Site Rank - Old Salt

Joined: Thu Oct 25, 2007 7:04 am
Posts: 853
Location: Clinton Lake Kansas
Surf City Catamarans wrote:
adornan wrote:
I'm going to drill the foam out and cut a groove down the inside of the fiberglass section with a hacksaw blade, then heat the aluminium and try to pull and prise the thing out.


+1

That's how I've done it several times. You're on the right track!

+2 that's how I got ours out...which was broke off flush

I sawed towards the corners (if you will) where there's a little gap in each side at the mast track.
Was then able to drive flat blade screwdriver/s in, then a chisel. Finally, with enough pressure, the epoxy joint popped loose.

Used heat to take the good donor comp-tip out of a cut off mast...a longer process...lots of pounding with a mallet :x

Use your mast cradle as a vice...hope the weather's nice.

Let us know how it went for ya

_________________
Sheet In...Max Out
www.fleet297.org
sailflatlands at gmail dot com


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: Google [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group