RUDDER BUSHES

Use this thread to share technique tips or ask questions of the experts. Also discuss boat modifications and rig tuning.
boris2
Posts: 21
Joined: Wed Jun 14, 2006 2:55 pm

RUDDER BUSHES

Postby boris2 » Tue Sep 06, 2011 10:28 am

I am thinking about bushing my rudder as described in Pimp my Skiff.

The instructions suggest drilling out with a 12mm bit but the bushes I have measure 11.5mm in dia which I would have thought would give a pretty sloppy fit.

I am also nervous about drilling acurately to maintain alignment with the pin. The whole think is too big to get under my pillar drill so I would have to do it with a hand drill which seems a bit dodgy to me.

Can anyone who has done this comment?

User avatar
paul manning
Posts: 2005
Joined: Tue Oct 09, 2007 10:02 am
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3
Contact:

Re: RUDDER BUSHES

Postby paul manning » Tue Sep 06, 2011 1:34 pm

I would always go under and work your way up on the diameter.
Paul Manning
MSCA Secretary

Phone 0044 (0)7843 269353
Fax 0044 (0)1621 785735
paulsmanning01@gmail.com
http://www.mustoskiff.com

User avatar
DanV193
Posts: 329
Joined: Mon May 21, 2007 12:15 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 5
Location: Stokes Bay

Re: RUDDER BUSHES

Postby DanV193 » Wed Sep 07, 2011 8:17 am

I thought it looked like a tricky operation and got a friend who has en engineering firm to do it for me. From memory the bottom of the rudder stock is fairly straightforward as you can drill unimpeded from the outside. The top hole is harder as you have to drill from below, which creates an access problem - luckily he had a special 'drill round corners' attachment. In the end he did a brilliant job. Therefore I would recommend asking around and getting it done professionally.
Dan Vincent
GBR 557 "Get Wavey"
Stokes Bay

Serega
Posts: 332
Joined: Mon Sep 25, 2006 10:49 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 5
Location: London
Contact:

Re: RUDDER BUSHES

Postby Serega » Wed Sep 07, 2011 9:03 am

managed to do it myself quite satisfactory. need a vice and a good quality drill. Since there is already a hole there, just need to try to follow the 'lead', not to force it to sides. And as Paul said, "go under and work your way up" if in doubt.

boris2
Posts: 21
Joined: Wed Jun 14, 2006 2:55 pm

Re: RUDDER BUSHES

Postby boris2 » Wed Sep 07, 2011 11:13 am

Further to what Dan is saying the other thing that crossed my mind is that the bush is much shorter than the top hole through the stock - so if I understand what you are saying correctly, you have not drilled the top hole clean through, you have just drilled it out to the required depth from the bottom?? That definitely doesn't sound like a home job!

User avatar
DanV193
Posts: 329
Joined: Mon May 21, 2007 12:15 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 5
Location: Stokes Bay

Re: RUDDER BUSHES

Postby DanV193 » Thu Sep 08, 2011 8:06 am

Correct -mine is drilled to the required depth from underneath.
Dan Vincent
GBR 557 "Get Wavey"
Stokes Bay

boris2
Posts: 21
Joined: Wed Jun 14, 2006 2:55 pm

Re: RUDDER BUSHES

Postby boris2 » Mon Oct 10, 2011 12:01 pm

I have now fitted my rudder bushes.

I used a 29/64 inch drill which produced a big enough hole and gave a tighter fit than the 12mm recommended.

I also found that the "brim" of the top hat bush lifted the rudder so that the pintel wouldn't quite go through so I had grind of a little off the bottom of the top gudgeon.

On reflection I was worrying too much about aligning the top hole. As the casting is hollow and you are only going through a few mill' of metal it isn't such a big issue.

I am now wondering if at some time I may need to bush the rudder gantry. Has anyone needed to do this?

User avatar
DanV193
Posts: 329
Joined: Mon May 21, 2007 12:15 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 5
Location: Stokes Bay

Re: RUDDER BUSHES

Postby DanV193 » Tue Oct 11, 2011 8:37 am

Yes - I bushed the gantry (sounds wrong), prior to that it was the most oversize of the holes. I was dreading it, but in the end it was straightforward. The job was done while it was still on the boat. In order that the gantry didn't bend and move as the drill pushed down on, I cut a piece of wood to fit snugly into the gap between the gantry and the lower gudgeon? then rested the transom on some padding on the floor. That way I could push down and everything stayed more or less where it should. I asked a friend to keep on an eye on the alignment of the drill, but as you are drilling through an existing hole it isn't that challenging. Then I gently persuaded the bush to go in- from underneath - so that the overall length of the pin would still be Ok. The final result was a tight fitting rudder with no 'jiggle'.
Dan Vincent
GBR 557 "Get Wavey"
Stokes Bay

User avatar
Rick
Site Admin
Posts: 3160
Joined: Tue Nov 01, 2005 3:48 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3
Location: Millbank, UK
Contact:

Re: RUDDER BUSHES

Postby Rick » Tue Oct 11, 2011 9:39 am

DanV193 wrote:... with no 'jiggle'.


oohh you don't want any jiggle when you ram your pin snuggly into the bushed hole ... somtimes a bit of lube helps ...
Rick Perkins. GBR

chriswrightlaser
Posts: 663
Joined: Mon Jul 28, 2008 9:24 pm

Re: RUDDER BUSHES

Postby chriswrightlaser » Wed Jan 18, 2012 11:02 am

My rudder is like new, all the ware is in the gantry, no gain would be achieved by bushing my rudder, is it legal to bush the gantry? are a lot of boats like mine that the pin sticks in the rudder so all movement is on the bottom plate and gantry, I have always put waterproof grease on mine from the start.
Thanks
Chris

User avatar
paul manning
Posts: 2005
Joined: Tue Oct 09, 2007 10:02 am
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3
Contact:

Re: RUDDER BUSHES

Postby paul manning » Wed Jan 18, 2012 8:04 pm

Yes, you can bush the gantry and stock
Paul Manning
MSCA Secretary

Phone 0044 (0)7843 269353
Fax 0044 (0)1621 785735
paulsmanning01@gmail.com
http://www.mustoskiff.com

Popeye
Posts: 55
Joined: Mon Jan 02, 2012 7:11 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3

Re: RUDDER BUSHES

Postby Popeye » Tue Jan 24, 2012 5:00 pm

Was going to do this earlier but thought I would seek advice first. looking at the existing hole in the gantry it doesn't look like there is enough metal there to enlarge the hole to a 11.5mm or 12mm hole for the bush. Will this not dramatically weaken the gantry.

Am I also right in thinking then that you all only have bushes in the top and bottom of the stock and in the top gantry only. (3 bushes used?)


Popeye

chriswrightlaser
Posts: 663
Joined: Mon Jul 28, 2008 9:24 pm

Re: RUDDER BUSHES

Postby chriswrightlaser » Tue Jan 24, 2012 6:42 pm

I was thinking of bushing the ganty with a very thin bush or using hard as steel putty, mine has only a very slighty oval hole in it(ganty), you could drill it out to make it round and use a loose thin bush? or the bush would only be 1mm and a light iterference fit, what material would we be allowed to use?
What material would be best to use as a bush, i dislike plastic? most people I know only open the bonnet of the car once a year now, how many people can use a reamer now?
Chris

User avatar
paul manning
Posts: 2005
Joined: Tue Oct 09, 2007 10:02 am
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3
Contact:

Re: RUDDER BUSHES

Postby paul manning » Tue Jan 24, 2012 8:51 pm

Class rules...

If it doesn't say you can, then you cannot.

In this case it's the supplied bushes or nothing please :!:
Paul Manning
MSCA Secretary

Phone 0044 (0)7843 269353
Fax 0044 (0)1621 785735
paulsmanning01@gmail.com
http://www.mustoskiff.com

Popeye
Posts: 55
Joined: Mon Jan 02, 2012 7:11 pm
So I know you are a real person not a spambot please enter the middle number from the below list (i.e. 3): 3

Re: RUDDER BUSHES

Postby Popeye » Tue Jan 24, 2012 9:02 pm

paul manning wrote:Yes, you can bush the gantry and stock



So we can or can't bush the gantry Paul?


Return to “Coaching, Technique & Technical Area”

Who is online

Users browsing this forum: No registered users and 1 guest