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Old 24 July 2007, 21:59   #1
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Searider - patches strake and what have you

Well...I'm pushing ahead with the Searider renovation as now have four weeks off work!
I have taken delivery of 8 metres of black rubber D section rubbing strake, about 5 inches wide.
The original tubes on my searider have been painted, and what seems like an original and weedy rubbing strake is attached under this paint.
This is a good two inches narrower then the strake I want to fit.
Do you think I can get away with glueing the new strake on top of this old one, or should I take it off?
How do I get the thing off !!?! A heat gun? It looks like its been on since the boat was new. Also I notice that there are one or two patches that will need to come off if I'm going the get the strake to lie flat along the tube.
Anyone got any tips on fitting the new strake?
Do I need to get it warmed up to start with?
I've not attempted this kind of thing before so any tips/advice is welcome.
thanks
Andy
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Old 25 July 2007, 00:54   #2
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Not sure about getting the old one off but have a horrid feeling that when I was going to do the same you need more than 8 m - assuming you have the 4m boat...

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Old 25 July 2007, 02:19   #3
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I think a hair drier will be better than a heat gun and contact paul tilley on here for any tips and fittings
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Old 25 July 2007, 05:38   #4
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um 8m seems a bit short for a 4m boat? Also i'm not sure how well it would stick to the paint......
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Old 25 July 2007, 10:53   #5
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thanks for that...
Its the 4m Searider...really hoping I can make it work with 8m.
The stuff costs a fortune...wasn't sure about how to handle the strake on the cones at the end of the tubes...maybe stop before I reach them!

I'm concerned about the Hypalon paint...will the 2402 hold fast to this?
thanks
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Old 25 July 2007, 14:22   #6
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Andy,

Iam actually in a very similar situation just having recently bought my first sr4 searider which like yours has been painted with hypalon paint. Ive looked at the pics of yours on your previous posts and I must say yours looks alot better than mine which is probably a bit older as well!

Anyway back to the rubbing strake - Ive also bought the same rubbing strake as you have(probably from the same seller) if its the same stuff you will have noticed that its very heavy duty and is meant to be fitted to a much larger boat but it will look well cool and give excellent protection to an old sr4:-)

I havent been out on my sr4 yet as ive only just bought an old 40hp yamaha engine and want to see what its like before I start to renovate the boat - so it will be a while before I get to fitting the new strake.

I say "I" but it will in fact be my brother who will be doing most of the work and providing the expertise as he used to work for several years repairing ribs and lifeboats etc some time ago so he knows what hes doing:-)

Off the top of my head going by what hes told me previously - you will need to remove the hypalon paint and buff the original material on the boat as the glue wont stick to the paint well or if it does it wont hold on for long especially with the heavy duty strake! Also you will have to remove the old strake with a heat gun(carefully) - as for the patches if they are there from a previous puncture repair I would be inclined to leave them and put the strake over them - not ideal but taking them off and patching from the inside is the only other option which is not really a job for a novice.

I dont know how well up you are on the removal/preperation and glueing techniques but if you need any help let me know and I'll try to help you out - I will be interested to know how you get on and maybe you can post some pics if you get the chance.
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Old 26 July 2007, 08:17   #7
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Thanks for that reply OLDS..
one of my concerns in taking off the old strake, is that I may end up doing some damage to the tubes/seams.
There are quite a few small patches that I think at one time probably held D clips etc ... where the clip has been lost and they are now just patches glued flat to the side of the tubes.
I'm also not brave enough to change the old valves in the tubes, but I think it would be sensible to do so.
Do any members know a place in the North East of England that could do that?
I will definitely post more pics.
The motor is being serviced currently by Powerhouse Marine in Newcastle, the new console will be here tomorrow. I am hoping to have it all back together by in a week or so.

Andy
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Old 26 July 2007, 08:19   #8
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I actually managed to get hold of another 10 metres of rubbing strake.
So now got no worries about the amount needed.
I wanted to make a fairlead piece...not having done this before, my idea was to take a piece of the strake and cut the top off the D section, to leave an open channel, and fit it vertically to the front tube section.
Any ideas / tips?
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Old 26 July 2007, 08:42   #9
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I used the tool below to get the old glue off.

Old Glue Removal - Tip
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Old 26 July 2007, 09:43   #10
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I wouldn’t be too concerned about damaging the tubes whilst removing the old strake as long as you take it easy with the heat gun – use it on its lowest setting quite a bit away from the strake to begin with and gradually get closer to it and you will find out just how much heat it takes to get the glue behind the strake softened – once its soft enough the strake will start to come away with pulling on it but rather than heat the hell out of it to get it off quickly you are better to use a flat blunt instrument like a putty knife and get it in behind the strake and prise it off whilst pulling on the strake. You will probably find that it wont be too much of a struggle getting it off as its quite an old boat but if you get to a bit that seems well stuck then start from the other side of it with the heat gun and prise it away as sometimes it comes off easier pulling in one direction than the other.

As for the old loop patches id remove them if they are in the way of the strake as they are no longer functional with the loops cut off. Id tackle the whole job by first marking out preferably with a china graph pencil where you want the new strake to go as you can use the original strake as a guide before you remove it which will help a lot when repositioning the new strake. Then you can remove the old strake and the glue residue that remains. I’ve seen my brother use a special type of soft rubber block to remove the glue which doesnt damage the tubes – not sure where you get it but I’ll try to find out for you. After you’ve cleaned the old glue off you can start the buffing with preferably a 60 or 80 grit sanding flapwheel on a drill. Take it easy on the material as you don’t want to go through to the fibre on the hypalon but just slightly roughen up the surface to get a good key for the glue. Also remember to be especially easy on the material under the old strake as this will have already been sanded in the factory to fit the original strake so the material will most likely be a bit thinner there. You will probably need to buff the tubes slightly wider than where your new strake is going to fit as you want to make sure the edges are well stuck and you can remove the excess glue after you finish fitting it.

The largest part of the job will be the buffing of the tubes and also remember you will need to buff the entire underside of the new strake as well. You would be there forever with a drill and flapwheel and as you wont have to be as careful as when preparing the tubes you may be able to use a powered sander like a belt or finger belt sander. You will also need to get some glue thinners or acetone/toluene etc to clean both the tubes and strake after sanding so its nice and clean for the new glue to be applied.

I can advise you about the glueing later as I think that will be enough work for you to be getting on with just now but remember you will spend the majority of the job doing the preparation and if you get this right it will be a much better job in the end!

I would need to ask my brother if he knew anyone who would replace the valves in the north east but we’ll be replacing the valves on my sr4 also as he reckons it’s a fairly simple job – then again nothing really seems to phase him when it comes to reapairing ribs as hes seen it all before!lol…

That’s a good idea about making a fairlead – I never actually thought of that myself but your quite right the strake is thick enough to have a channel on it if you cut the top off although you would need to be careful so it doesn’t end up looking all hacked up on the edges.
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