Subject: Re: Loctite on carrier bearings?
Author: John Chicoine
Date: May 10, 2005, 12:13 PM
Post ID: 1718840103
When in doubt call the experts. According to the Loctite person I just
spoke to two products will work.
The 641 bearing retainer or the blue 242 thread locker. He stated that both
are medium strength and based on the same chemistry. He also stated that
they will bridge a 0.006 inch gap. We're only talking about 0.001 to 0.002
between the u joint and the carrier bearing so there's no problem there.
I've toyed with the idea of opening up the swing arm bore and using a set
screw to keep the bearing from moving. That way the u joint and bearing
could be installed as a unit. Who knows, perhaps I'll try it some day.
John C.
----- Original Message -----
From: "Bruce Giller" <bgil-@mitre.org>
To: <Loopfram-@topica.com>
Sent: Tuesday, May 10, 2005 2:36 PM
Subject: RE: Loctite on carrier bearings?
| Your free subscription is supported by today's sponsor: ------------------------------------------------------------------- Help us support US Troops - Just Register Here. http://click.topica.com/caadtaMb1dfltbN7eKTa/PermissionData ------------------------------------------------------------------- What about using Loctite's bearing retaining adhesive (#681 ?) instead of red or blue thread locking ? It might have different releasing |
Bruce -----Original Message----- From: Greg Field [mailto:gre-@gregfield.com] Sent: Tuesday, May 10, 2005 11:39 AM To: Loopfram-@topica.com Subject: Re: Loctite on carrier bearings? I haven't got the u-j yet. Should today. I actually did the test last week. Found another bearing yesterday, and tried it again with blue loctite. It stuck really well. It sets up really fast, in under 5 minutes. I had to pound it out, but I was able to do so with a plastic dead-blow, and it came out without need for heat or destroying the bearing. This was after setting up for less than an hour (which is all the time I had), so I don't know if the bond would become overly strong after longer setting. I'm pulling another carrier bearing out of a bike today, so I may try it again, to see if time makes the bond too strong. I actually believe that if you don't have to pound the u-j into the carrier, it may last longer, since you're not side-shocking the carrier and end-shocking the u-j bearings with hammer blows. Seems like when I peen them, I have to pound them in, just as I have to with brand-new parts. If the loctite gives a good enough bond between the slip-fit parts to withstand the inertia of regular use, and is "disassembleable," that's surely the way to go. In my opinion, the red is not disassembleable. The blue seems to be. So, the question remains, does the loctite hold in service? Have any of you had occassion to disassemble a u-j/carrier that you had earlier bonded with loctite? Did the loctite keep the u-j yoke from spinning in the carrier, or did it give up the ghost in service? I've never had to go back in to see if it worked. If I had my druthers, I'd JB Weld the carrier to the U-joint while the u-j and carrier are on the bench, so I'd be sure of a good bond. Then, I'd slip them as a unit into the swingarm. This would require slightly enlarging the swingarm's bearing tunnel for a slip-fit, so you don't have to pound the u-j/carrier unit into the swingarm. How then to fix the carrier in the swingarm (you could not install the circlip)? Maybe loctite around the outside edge of the carrier, leaving off the circlip? This might work because you usually have to heat the swingarm to get them out anyway, so that would melt the loctite. The only question is does the carrier get hot enough in running to also melt the loctite? I'd bet not, but don't really know. I may try this on one of my bikes. On Tuesday, May 10, 2005, at 05:21 AM, John Chicoine wrote:
Your free subscription is supported by today's sponsor: ------------------------------------------------------------------- Sign up today for a No Annual Fee Discover®Platinum Card and get. 0% Intro APR on Purchases & Balance Transfers for 8 Months, Up to 2% Cashback Bonus®reward on your purchases & 100% fraud protection. http://click.topica.com/caadtrVb1dfltbN7eKTf/DiscoverCard ------------------------------------------------------------------- |