Re: worn spline fix???

Scott Donnelly (oharajem(at)free.midcoast.com)
Tue, 29 Dec 1998 10:58:04 -0500


Re: epoxy splined hub fix - Anyone interested in looking into this further may want to check Gougeons table of engineering data at: http://www.concentric.net/~westsys/physical.shtm/

On the subject of heat generated by bearings and braking - how hot would you expect the splined hubs to get during normal duty? If the hubs got hot enough to melt the epoxy, it seems like the bearing grease would also be burned off. Any further thoughts/comments?

Scott Donnelly Series V

Tim Stiffy wrote: >
> Scott,
> I thought about using something like J-B Weld but didn't think it would take
> the pressure. I'm not familiar with this epoxy. If it is removable at low
> temperature, would the heat of the bearings and braking effect the bond? How
> thin a coating could be applied? Might be worth looking into.
>
> Tim
> ---------------Original Message---------------
> Here1s a long-shot idea that might serve to quite splined
> hub clunks and maybe extend their service lives. Be
> forewarned that I have not actually tired this and cannot
> predict what mechanical or safety concerns resulting from
> this hair brained idea may ensue...
>
> Here1s the idea: Using a two part epoxy system such
> Gougeon1s West System, create a sufficiently thickened
> mixture (epoxy and high density filler) to fill the voids
> between the worn splines. Their 404 High Density filler is
> designed for high cyclic loading of bonded hardware and has
> been extensively proven in marine applications where
> hardware is subject to substantial shock, shear and
> compression loading. With proper preparation, epoxy will
> bond to metals. Obviously, it would not be desirable to
> permanently bond the wheels to the splined hubs thus a
> release agent (wax) would need to be used on one of the
> mating surfaces. If the idea doesn1t work, no permanent harm
> (to the splines) is done as removal of the hardened epoxy
> mix is easy with a low temperature propane torch. Extensive
> technical data and application information is available from
> Gougeon1s Technical Manual and Product Guide if anyone would
> like to pursue this...
>
> OK engineers! Let the hole shooting begin!
>
> Scott Donnelly
> Series V - clunking hubs, awaiting retrofit bolts-ons and
> Minilites
>
> ----------End of Original Message----------