Go Back   RIBnet Forums > RIB talk > RIBs & ribbing
Click Here to Login

Reply
 
Thread Tools Search this Thread
 
Old 06 April 2014, 18:52   #1
Member
 
Country: UK - England
Boat name: Son of a Beach
Make: Avon SR4
Length: 4m +
Engine: Mercury 50hp
Join Date: Sep 2012
Posts: 130
Anyone fitted a keelguard to an SR4 or similar?

If so how far did you take the keel guard back? - I'm trying to work out what length to go for.

Also has anyone used Keeleazy as an alternative?

I'm just figuring out the best way to protect the hull on a drying mooring...
__________________
Tim in Yorkshire is offline   Reply With Quote
Old 06 April 2014, 19:52   #2
Member
 
Country: UK - England
Length: 4m +
Join Date: Jun 2013
Posts: 39
im also quite intrested as the mooring i keep my sr4 no longer has sand underneath :L not ideal having it dry out on sharp rocks im half temped to flip it over and lay a layer of mat on the length of the keel but depends on time really
__________________
kernowsr4 is offline   Reply With Quote
Old 06 April 2014, 19:58   #3
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
We have a 6" wide one I think left over from the MacRib project. It's not an east job on an SR because of the chines, drain holes and planing pad.

I think you bought the Orange and Cream SR4 that I looked at, nice boat that.

__________________
whisper is offline   Reply With Quote
Old 06 April 2014, 20:04   #4
Member
 
Country: UK - England
Boat name: Son of a Beach
Make: Avon SR4
Length: 4m +
Engine: Mercury 50hp
Join Date: Sep 2012
Posts: 130
Yep orange tubes and whiteish hull. Nice, perhaps a little on the expensive side but had everything I wanted and the owner seemed pretty genuine. When you factor in diesel in to going to look at boats etc it seemed worth going for. Just a few chips in the gel coat to go over as it'll be living in the water a lot. Also toying with the idea of anti fouling, but not sure.

How long is the 6" wide keel guard you have left over? And what kind of donation would you want?
__________________
Tim in Yorkshire is offline   Reply With Quote
Old 06 April 2014, 22:16   #5
Member
 
specsmallcraft's Avatar
 
Country: UK - England
Town: Uxbridge
Length: 5m +
Join Date: Apr 2014
Posts: 2
Hi, my name is Mark... This is my first post on RIB Net. Hello all.

I worked at Yamaha Motor UK Ltd for 16 years, latterly being responsible for Marine Special Projects, where we fitted KeelGuard to RNLI Rescue Water Craft amongst a number of others. I recently decided to leave Yamaha to start my own business, and am now sole importer / distributor of KeelShield for UK & Eire (amongst other products).

I can add a few details that my assist Tim with his enquiry (and will try to do so without doing a sales pitch!)...

I supplied a 6' Black KeelShield to Rib 4 Macmillan in support of the fabulous work they were and are doing with a great Cancer Charity. I guess it is a KeelShield (rather than a KeelGuard) that is being referred to. I had a conversation with R4M about selling it to raise money for the charity. The RRP of a 6' KeelShield is £149.95.

Both KeelGuard & KeelShield are 5 inches wide. Visually KeelGuard and KeelShield have different profiles and are made from different materials. KeelGuard is made from a more rubbery material and KeelShield is made from a urethane. Both are available in a variety of lengths. Both benefit from fitment when the protection strip and boat are warm & dry (70 degrees ideally) - this both for flexibility of the strip and maximum adhesion.

Both products recommend pre-cleaning the boat with an alcohol before fitting - KeelShield insist on Isopropyl and nothing else (as other alcohol solvents can leave a film). From memory KeelGuard are not so insistant. The SR4 has strong chines right up to the bow, so either strip would be under more strain than if they were stuck to an "unchined" bow. Personal Watercraft also have strong chines and can have hull protection strips fitted, although I concede an SR4's chines are sharper & more regular. KeelShield recommend using a PU product such as Sikaflex to add extra strength and protection to the edge of the strip. When I was with Yamaha, we took the decision to do this with KeelGuard aswell after a few issues with lifting adhesive.

Regards length, in general, from under the U-bold / bow eye to the first full load bearing keelroller is recommended when used regularly on a trailer. The reason being that with a sticky keelroller on one side and a boat on the other, movement may be taken up by the hull protection strip, eventually potentially causing the adhesive to blister (a bit like going for a long walk in your wellies with only one pair of socks on...!). If being kept on a drying mooring then this may not be an issue. I'm not familiar with the full hull profile on the SR4, but theoretically, a KeelShield could be fitted to a RIB's full keel length. A personal watercraft has a similar changing hull profile to a pad, as the vee-hull changes to flat profile for the jet intake. I've never known a problem with adhesion in this area. The drain holes could certainly be an issue. Both products can be cut if required (don't use a saw as the dust will stick to the adhesive).

The KeelShield installation video may assist and can be found here: .

My company has a facebook page which has various pics and images on it (most recently 8 photos from an installation of Kevlar KeelShield with C-Fury): https://www.facebook.com/specialistsmallcraft

If you decided you wanted to have a hull protection strip on your SR4, it certainly wouldn't be the most straight forward hull to fit it too. Ultimate adhesion would I think depend on the preparation, temperature at time of installation and fitting as much as the product. KeelShield is available from all good Dealers - Yamaha Dealers especially will know me. If they have a warm dry workshop, they should be able to fit it for you too if required.

Forum members will of course be able to advise you from their personal experience of course, but I hope this assists.
__________________
specsmallcraft is offline   Reply With Quote
Old 07 April 2014, 08:17   #6
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
I have a roll of this gear that Mark donated to the macrib. I have had a talk with Mark and we are going to do a little test on his product. We will be putting some on a small tender I have here and I'll be towing it up the drive without a trailer to see how good it's abrasive qualities are. Pics will follow.
You might think that the band is pricey but repairing a keel to it former glory would cost a a whole lot more.
As mark has pointed out some boats have chines that may make it difficult to fit the band satisfactorily. We can have a look at macrib when we have our meeting as I think this one will be the most difficult that you will encounter. If it's doable then I'll fit it. Pics will follow
__________________
biffer is offline   Reply With Quote
Old 07 April 2014, 12:25   #7
Member
 
Country: UK - England
Boat name: Son of a Beach
Make: Avon SR4
Length: 4m +
Engine: Mercury 50hp
Join Date: Sep 2012
Posts: 130
Thanks for the above so far, very useful. Has anyone on here fitted any of the above products to an SR4? Or even a bigger SR?
__________________
Tim in Yorkshire is offline   Reply With Quote
Old 08 April 2014, 05:45   #8
Member
 
Country: USA
Town: Rhode Island
Make: avon
Length: 6m +
Engine: 90hp merc
Join Date: Mar 2006
Posts: 326
I have fitted them to both a 4.0 and a 5.4. the one on my 5.4 has come loose and i ended up removeing it. as stated earlier it is really tough because of the chines on the seariders, Flip the boat over, will make things a lot easier and a better job. the 4.0 isnt as bad as the 5.4. to apply, there arnt as many chines to cover, what i did is where the guard comes over the chine i used a razor knife to to slice it so it would sit nice and flat. On the 4.0 i had the guard extended almost 3/4 the way back on the boat. the 5.4 ended just a few feet back from the bow. Lay the guard out and dry fit it a few times, look for any spot that will give u problems. its really only going over the chines, thay dont allow the guard to lay flat and they will fail and start to come loose. I used a hair dryer and applied it in direct sunlight so it was nice and pliable, definately helped. I did have to cut a couple notches in front for the holes but just a little, my guard wasnt wide enough to completely cover the holes. Follow directions , scuff the hull good. and be carefull when u use the primer cleaner they gave you, the applictaer fell apart while useing it before i finished the job. I started applying from the bow back. had marked out where with a pencil so i knew the glue and guard would match. and just press tightly for good seal. also they dont recomend guard not contact any roller on trailer..., hope this helps
__________________
learning to fly is offline   Reply With Quote
Old 08 April 2014, 08:13   #9
Member
 
Country: UK - England
Boat name: Son of a Beach
Make: Avon SR4
Length: 4m +
Engine: Mercury 50hp
Join Date: Sep 2012
Posts: 130
Thanks for the extra tips.
__________________
Tim in Yorkshire is offline   Reply With Quote
Old 11 April 2014, 12:05   #10
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Click image for larger version

Name:	ForumRunner_20140411_120153.jpg
Views:	334
Size:	59.8 KB
ID:	93216



Click image for larger version

Name:	ForumRunner_20140411_120153.jpg
Views:	334
Size:	59.8 KB
ID:	93216
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 12:12   #11
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Doing the test on the keel shield today but Mark has given me something that is in my opinion far more interesting. Look at the pics of the sheet stuff. It's called gatorskinz.comes in a roll. Can be used straight on to tubes or deck. Uses are endless
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 12:49   #12
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
All done. Looks good
Attached Thumbnails
Click image for larger version

Name:	ForumRunner_20140411_124858.jpg
Views:	280
Size:	26.0 KB
ID:	93217  
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 13:01   #13
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Keel shield on hypalon. Straight on. Just clean prime and drop it on. No sanding
Attached Thumbnails
Click image for larger version

Name:	image-468175650.jpg
Views:	210
Size:	37.2 KB
ID:	93218   Click image for larger version

Name:	image-2010702566.jpg
Views:	216
Size:	28.3 KB
ID:	93219  
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 13:03   #14
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Gators lynx is the same application
Attached Thumbnails
Click image for larger version

Name:	image-2324276589.jpg
Views:	271
Size:	114.3 KB
ID:	93220  
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 13:05   #15
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
We've stuck a bit round a moulding line just to show you guys with chines
Attached Thumbnails
Click image for larger version

Name:	image-4200117057.jpg
Views:	255
Size:	57.5 KB
ID:	93221  
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 13:08   #16
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
It's on there. I was thinking with the ease of use you could mend punctures with it. Where normal glue doesn't like moisture I wonder what this stuff is like. Another test in the offing me thinks
Attached Thumbnails
Click image for larger version

Name:	image-2659268945.jpg
Views:	182
Size:	54.9 KB
ID:	93222   Click image for larger version

Name:	image-1036291467.jpg
Views:	230
Size:	55.8 KB
ID:	93223  
__________________
biffer is offline   Reply With Quote
Old 11 April 2014, 16:28   #17
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
Good work Biff, just arrived at the caravan
__________________
whisper is offline   Reply With Quote
Old 12 April 2014, 09:26   #18
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Pics say it better than me. I just put it on my boot and scuffed it round the yard. The two pics of the sample are of it after we had scuffed it. I cleaned it with acetone. You can still see some scratches on it but it look far better than what you're boat would have it you had done the same test
Attached Thumbnails
Click image for larger version

Name:	image-583338119.jpg
Views:	273
Size:	34.2 KB
ID:	93246   Click image for larger version

Name:	image-3111810557.jpg
Views:	282
Size:	59.5 KB
ID:	93247   Click image for larger version

Name:	image-2651156737.jpg
Views:	392
Size:	61.4 KB
ID:	93249   Click image for larger version

Name:	image-1671035638.jpg
Views:	238
Size:	39.2 KB
ID:	93250  
__________________
biffer is offline   Reply With Quote
Old 11 November 2014, 20:30   #19
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,299
Biff.. This needs resurrecting.Far too interesting. so what are your thoughts on the gatorskinz stuff in comparison to Keelguard?
https://www.google.co.uk/url?sa=t&rc...92tQ1guXE3AMmw

Ps love the dancing O the yard. I would have been kippering myself!!
__________________
Member of S.A.B.S. West Country Division
matt h is offline   Reply With Quote
Old 12 November 2014, 08:17   #20
Member
 
Ribshop's Avatar
 
Country: UK - England
Town: River Hamble
Length: 6m +
Join Date: Oct 2005
Posts: 726
We have seen a lot of the Keelguard peeling away from the adhesive backing. We now sell and fit the Keelshield and have not seen any problems as yet.
Keel, bow and skeg protection products
__________________
RIB REPAIRS | RE-TUBES | RE-FIT - OUTBOARD SERVICING - ONLINE SHOP FOR RIB & TOHATSU PARTS .
Phone: 01489 556800 www.rib-shop.com
Ribshop is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 10:44.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.