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Date:         Sun, 24 Jul 2016 22:24:32 -0700
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: Another pop top hinge repair
Comments: To: BenT <syncro@GMAIL.COM>
In-Reply-To:  <F780E67B-B754-4DFB-BF70-6DD77560A9B8@gmail.com>
Content-Type: text/plain; charset=us-ascii

I like the bearing idea but I wonder about one aspect of it, and this also applies to a tight bushing.

You see in my blog post that I match drilled/milled the hinges. I had the pair stacked in the vice and set as square as they would go. The hinges are not precisely made things, there was no guarantee that the set up would result in absolutely square and perpendicular holes.

But that didn't really matter to me. As long as I got the holes more or less in the same place on the hinge. The bushings I made were reamed ( and the size was just convenient with the reamers I have) to 16mm and the pins were turned for an easy fit. Not a super close fit.

So what I'm trying to say, in a very roundabout way, is that I understood that some slop in the bushing - pin fitment was a good thing as I could not guarantee that the bushings were pressed into the hinges in exactly the same place on both, or that the surface that the bushing was pressed into was truly perpendicular to the huge axis. That and the generous tolerances of the rest of the assembly meant, in my mind, that the bushing and pin would not bind.

If I made the bushing and pin a closer fit maybe it wouldn't move easily when fully assembled.

Jeez but I ramble. What I'm trying to say is that tighter and closer fit is not always better and that a bearing might be a closer fit than a bushing.

But I'd still like to try a roller bearing, just for fun.

Alistair

> On Jul 24, 2016, at 8:02 PM, BenT <syncro@GMAIL.COM> wrote: > > Sorry, Vanagon Cafe is a "closed group" on Facebook. Meaning any link I post would be blocked, unless you are a member. I'm on the road and can't post any photos in a separate site. > > I'm not the person who did the mod. It was another group member. It's essentially the same mod which Alistair made except he used a bearing instead of a bushing. That made lifting even easier. > > > > BenT > sent from my electronic leash > >> On Jul 24, 2016, at 6:19 PM, OlRivrRat <OlRivrRat@comcast.net> wrote: >> >> How 'bout a Link ~ >> >>> On 24 Jul , 2016, at 6:30 PM, BenT wrote: >>> >>> Andy Tillinghast in the Facebook group Vanagon Cafe posted his repair. It's even more overkill as they installed a beating instead of a bushing. I'll attach the pic for you to see but the Listserv will strip the attachment. >>> >>> >>> BenT


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