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09-08-2010, 07:14 PM
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#1
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Newbie
Join Date: Sep 2010
Posts: 1
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2002 Mainship Sliding door rollers
Need to find new rollers for the starboard side sliding door on my 2002 Mainship 390 trawler.* Mainship no longer stocks them.
Captain Jay
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09-08-2010, 07:55 PM
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#2
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Guru
City: Thibodaux, Louisiana
Vessel Name: Gumbo
Vessel Model: 2003 Monk 36
Join Date: Oct 2007
Posts: 3,882
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RE: 2002 Mainship Sliding door rollers
This palce sells parts for home doors maybe some of the rollers can interchange?
http://www.allaboutdoors.com/index.php?cPath=74 If there is a mainship owners group maybe someone there can help
Steve W
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09-10-2010, 04:32 AM
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#3
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Guru
Join Date: Jun 2008
Posts: 4,872
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RE: 2002 Mainship Sliding door rollers
Remove the door and rollers and you will be able to match them up at a well stocked Lowe's or a local True Value type hardware store.
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09-11-2010, 07:41 AM
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#4
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TF Site Team
City: Saltspring Island
Vessel Name: Retreat
Vessel Model: C&L 44
Join Date: Nov 2007
Posts: 5,538
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RE: 2002 Mainship Sliding door rollers
Your rollers came with ordinary steel ball bearings, hence the failure. You can replace with the same, from Home depot, or search for all stainless, and get many more years than the originals. Search online. I found some from a hardware supplier in North Carolina that shipped to Vancouver. Years ago and I don't have the old invoice any more, sorry. Those came with aluminum track to ride on, but that corroded and wore low spots, so I recently replaced the tracks with SS. Those from Speedy Glass, who sell them for domestic sliding door retrofit. Now smooth running, and should last for quite a while.
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09-12-2010, 07:02 PM
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#5
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Guru
City: Juneau Alaska
Vessel Name: Arctic Traveller
Vessel Model: Defever 49 RPH
Join Date: Oct 2007
Posts: 607
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RE: 2002 Mainship Sliding door rollers
It's quite common for the rollers to rust up.* Lots of folks simply remove the rollers and place a thin strip of plastic on the bottom of the door.* When I did this, the door went from impossible to open to opening on its own in big seas...........* Arctic Traveller
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03-20-2014, 12:05 PM
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#6
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Senior Member
City: MN and FL
Vessel Name: Serendipitous
Vessel Model: Mainship 390 and Bayliner 4788
Join Date: Feb 2013
Posts: 268
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Lots of good advice here...
Unfortunately for the 350/390s, Mainship used a very unusual door that requires rollers only 1/2" wide (which is the width of the channel inside the bottom of the door).
I took mine apart last week to identify the rollers and then spent a couple of DAYS looking at every hardware store within 25 miles, to no avail.
What I eventually learned is that the doors were made by "Better-Bilt" and that the specific roller is quite rare, seemingly the only roller that was ever made in a 1/2" width. (and yes, I did try to force-fit a commonly available 9/16" wide unit and failed)
Here is a picture of what came out of the bottom of my door (in pieces):
http://bartonkramer.com/art/product/...s/illo/514.jpg
Once I knew the exact dimensions, I was able to locate them on Amazon!
Prime-Line Products D 1758 Sliding Door Roller Assembly with 1-1/8-Inch Steel Ball Bearing - Amazon.com
Unfortunately, these do not appear to be available in stainless steel or nylon, so I am just going to pack the bearings with the best grease I can find and make it a point to re-grease them regularly.
Hope this helps other Mainship 390 owners, I understand these roller have been a constant source of trouble...
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03-21-2014, 09:36 AM
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#7
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Senior Member
City: Louisville
Vessel Name: Lucky Dog
Vessel Model: Mainship 350 Trawler
Join Date: Oct 2007
Posts: 101
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Thanks, RG.
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03-21-2014, 03:39 PM
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#8
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Guru
City: Pender Harbour, BC
Vessel Name: Gwaii Haanas
Vessel Model: Custom Aluminum 52
Join Date: Sep 2013
Posts: 3,791
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Sorry, but what a piece of crap to put on a boat! I suppose they might be ok if you never went near salt? Maybe have a machine shop make some up in 316 and you can sell them, these must be crapped out on every Mainship.
A word of warning, once you install that piece the door will slide like crazy so remember to go easy on it. I lubricated one of my sliders and my wife nearly launched it off the boat because the "new" door slid so well.
__________________
Don't believe everything that you think.
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06-11-2018, 11:50 AM
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#11
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Member
City: Myrtle Beach
Join Date: May 2018
Posts: 8
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Great info but... how the heck did u get the side door out to replace rollers... I got the back door removed, repaired and reinstalled with a lot of effort and nashing of teeth but the side door is a whole different story
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06-11-2018, 12:19 PM
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#12
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Guru
City: Cypress Landing Marina (NC)
Vessel Name: Heron (2)
Vessel Model: '88 Cape Dory 28 Flybridge #115
Join Date: Nov 2014
Posts: 1,305
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Quote:
Originally Posted by fryedaze
fits.
As metioned by Artic Traveller above some folks just go to a high density poly track modification.
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That's what I did.....I made up some low friction blocks to ride in the existing track and It's been a perfect solution. Occasional lube with a silicone grease and it's been perfect for 2 years..
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Steve
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06-13-2018, 10:21 PM
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#13
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Member
City: Myrtle Beach
Join Date: May 2018
Posts: 8
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Understand the plastic vs. rollers but how did u get the door out to replace the rollers with the plastic blocks... there is a trim piece that has to be removed top and bottom but it is impossible to get even a 90-deg screwdriver in the space between the trim and flybridge... on my back door it took an impact driver to loosen these die to AS to aluminum corrosion... regardless of gowbi replace the rollers I still have to get the door out to do that!
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12-19-2018, 08:04 AM
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#14
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Senior Member
City: MN and FL
Vessel Name: Serendipitous
Vessel Model: Mainship 390 and Bayliner 4788
Join Date: Feb 2013
Posts: 268
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Quote:
Originally Posted by vividsea1
Understand the plastic vs. rollers but how did u get the door out to replace the rollers with the plastic blocks... there is a trim piece that has to be removed top and bottom but it is impossible to get even a 90-deg screwdriver in the space between the trim and flybridge... on my back door it took an impact driver to loosen these die to AS to aluminum corrosion... regardless of gowbi replace the rollers I still have to get the door out to do that!
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When you unscrew the bottom track from the fiberglass deck, it can then slide outward (to starboard). This allows you to lift out the door.
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RiverGuy~~
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12-19-2018, 08:49 AM
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#15
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Guru
City: Baton Rouge, Louisiana
Vessel Name: Old School
Vessel Model: 38' Trawler custom built by Hike Metal Products
Join Date: Dec 2007
Posts: 1,018
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I had a similar problem w/ the bearings on my sliding doors, found exact replacements here: kscdirect.com, go to bearings and search for the type that is shown on yours.
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02-12-2019, 06:31 PM
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#16
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Veteran Member
City: westbrook, CT
Vessel Name: schatzi
Vessel Model: mainship 390
Join Date: Sep 2014
Posts: 38
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390 sliding door wheels
Ace hardware stocks the correct wheels. They are two different sizes. Getting the door out is a job for two people. Take wheels out and take them to Ace.
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02-12-2019, 07:47 PM
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#17
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Guru
City: Carrabelle, FL
Vessel Name: Morgan
Vessel Model: '05 Mainship 40T
Join Date: Jan 2008
Posts: 2,073
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Did mainship change the rollers after 2002? I'm worried about my 05 400 now.
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05-28-2020, 08:34 AM
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#18
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Member
City: South Portland ME
Vessel Name: Serenity
Vessel Model: 350 Mainship
Join Date: Apr 2016
Posts: 11
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Riverguy, I have a 1998 350 mainship that needs rollers, I have purchased the 1/2" wheels, question is did you disassemble the door frame? I at wits end trying to figure how to!
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04-19-2022, 10:10 AM
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#19
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Veteran Member
City: Cape Haze FL
Vessel Model: Mainship 390
Join Date: Dec 2019
Posts: 69
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Where are helm door screws to remove bottom track
Quote:
Originally Posted by Riverguy
When you unscrew the bottom track from the fiberglass deck, it can then slide outward (to starboard). This allows you to lift out the door.
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Where are the screws for the bottom track on the helm door? I don't see them anywhere. Are they on the bottom of the bottom track? Or the side?
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