I'm planning to install a new anchor roller on my 22 Cruiser this winter. Seems like an easy enough project, but I'm wondering what material to use between the new roller and the top of the hull. The material the factory installed beneath the current roller is starting to wear down. An thoughts?
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Anchor roller installation
- Thread starter Boomer
- Start date
Are you putting in an entirely new SS piece with roller? Is it because your anchor will fit better? While you have the roller off, check to see if the bolt pattern is the same, or different. While the roller is off, it is a great opportunity to either fill the old holes with glass and resin, and to drill new holes (if necessary) and route out the core around the hole, fill and seal with thickened epoxy to prevent any water from getting into the core of the deck.
My experience with older C Dorys is that the only material between the SS roller bracket and the deck is a bedding compound. I would probably use 3M 4000. It is possible that they used a butyl tape--that depends on the bolts being kept very tight, and does not have any adhesive property...
My experience with older C Dorys is that the only material between the SS roller bracket and the deck is a bedding compound. I would probably use 3M 4000. It is possible that they used a butyl tape--that depends on the bolts being kept very tight, and does not have any adhesive property...
Barry Rietz
New member
Locate some "UHMW" about 3/8" thick and shape it to fit the profile of the stainless mount. Pre-drill bolt holes to match the mount and bed using a tube of "Boatlife". UHMW can be found in scrap bins at most of the plastic supply outlets. The material is very resistant to ultra-violet and should outlast the boat!
Barry Rietz":2gmf8176 said:Locate some "UHMW" about 3/8" thick and shape it to fit the profile of the stainless mount. Pre-drill bolt holes to match the mount and bed using a tube of "Boatlife". UHMW can be found in scrap bins at most of the plastic supply outlets. The material is very resistant to ultra-violet and should outlast the boat!
I have to disagree on several respects with my good friend Barry's post. First my boat does not have any material except some bedding compound between the SS roller and the fiberglass. Specifically no plastic material. It is possible a boat a year or two newer might have a different mount.
UHMW is not resistant to UV--in fact one of its only bad characteristics is that it does not have UV resistance. One major manufacturer goes so far as to say:
To get much UV resistance, one has to order a very specific UHMW.HOW DOES THE ENVIRONMENT AFFECT UHMW?
Sun without protection – depends on thickness and location. The thicker the better. In Florida, Arizona, New Mexico, and other desert areas – less than one year.
All of this type of plastic have UV susceptibility. There are some specific UV resistant HDPE which are used in playground materials, which are more resistant--but the raw materials are all not good with the sun, unless specifically UV treated.
King Starboard (HDPE) states:
They also note that black pigmented material will last longer than lighter colors.The sole purpose of the UV stabilizer is to bond molecularly with the base polymer and prevent the polymers molecular chains from breaking down due to UV exposure. The type and amount of UV stabilizers used and the amount of UV exposure are the main variables that affect polymer life. As with our pigments, King Plastic Corporation uses only the finest UV stabilizers available.
There are a number of "Boat Life" products. I suspect that Barry means "Boat Life Life Seal" Which is a hybrid compound--Urethane and silicone. I have found this good specifically for bedding plastics. If using an HDPE or UHMW the Life seal would be one of proper products to use, But I have used 3 m 5200 with HDPE, with no ill effect, and with dovetail and flame hardening, one can get moderately good adhesion. None of the high density products allow good adherence without special treating (such as flame treating the surface) of any bedding or sealant.