[modeleng] Re: Loctite - what are we actually using it for?
- From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Tue, 10 Aug 2004 23:16:06 +0100 (BST)
Just thinking about this problem from a different viewpoint, if we loctite
the wheel to the axle, and then pin it after the loctite has dried, how
would we ever know if the loctite joint had broken?
If we strongly believe that we need to put a pin in place, we must be
concerned that the loctite will break, and that if/when it does, the pin
will happily carry all of the load, otherwise whats the point of putting
the pin in.
Do we actually use the loctite because we don't want to have to press the
wheels on, or because a clearance joint which we are going to loctite
takes much less careful turning (with the loctite taking up the space).
If we are just using the loctite to take up the space, and we are relying
on the pin to stop the wheels shifting on the axle, then it surely matters
not if we weaken the joint by drilling into the loctite after it has set.
On a related note, when there is a clearance joint, how do others prevent
misalignment? Certainly loctiting after the whole lot up AFTER drilling
the whole for the pin might cause problems on this front, unless the pin
has a clearance joint as well, and then this might affect how accurate the
quartering was!
Yours,
Rich.
PS One or two people mentioned loctite 601, isn't this not produced
anymore? Isn't the direct replacement 603? Has anyone tried this yet, and
does it work okay?
On Tue, 10 Aug 2004, Dennis Rayner wrote:
> Hi all,
>
> I have followed up on my vague memory of "hoop stresses" by emailing
> Loctite and asking them about the effect of putting a pin half in the wheel
> and half in the axle of a loctited bond. The following is their (very
> responsive) reply.
>
> Regards
>
> Dennis
> ----- Original Message -----
> From: <Loctite.Connect@xxxxxxxxxxxx>
> To: <dennis.rayner@xxxxxxxxxxxx>
> Sent: Tuesday, August 10, 2004 9:08 AM
> Subject: Re: Technical Service/11947
>
>
> >
> > Dear Dennis thank you for your enquiry
> >
> > Generally this will reduce overall strength of the bonded joint, you
> will
> > have uneven stress distribution within the bonded joint & if large
> amounts
> > of heat are generated during the drill process this can reduce the
> overall
> > strength of the adhesive
> >
> > Please test to be 100% certain of all data supplied
> >
> > If you require any additional technical assistance regarding Loctite
> UK
> > adhesives do not hesitate to contact me
> >
> > Yours sincerely
> > Ian Gatherum
> > Application Engineer
> > HENKEL LOCTITE ADHESIVES LTD
> > TeL No 01707 358865
> >
> >
> >
> > dennis.rayner@ntl
> > world.com To:
> loctite.connect@xxxxxxxxxx
> > cc:
> > 09/08/2004 20:18 Subject: Technical Service
> >
> >
>
> >
> >
> >
> >
> > UK_TECH_SERVICS_SELECTION ProductInfo
> >
> >
> >
> >
> > YOUR_MESSAGE If I use Loctite retainer to fix a wheel to a
> > shaft, does drilling a hole and inserting a
> > pin, half in the wheel seat and half in the
> > axle, have any effect?
> >
> >
> >
> >
> > SALUTATION Mr
> >
> >
> >
> >
> > FIRST_NAME Dennis
> >
> >
> >
> >
> > LAST_NAME Rayner
> >
> >
> >
> >
> > ORGANIZATION
> >
> >
> >
> >
> > EMAIL dennis.rayner@xxxxxxxxxxxx
> >
> >
> >
> >
> > STREET 137, Second Avenue
> >
> >
> >
> >
> > POSTAL_CODE PO6 1JT
> >
> >
> >
> >
> > CITY Farlington
> >
> >
> >
> >
> > COUNTRY United Kingdom
> >
> >
> >
> >
> > PHONE 02392789964
> >
> >
> >
> >
> > FAX
> >
> >
> >
> >
> > MYSUBJECT Technical Service
> >
> >
> >
> > IP:80.3.160.6
> >
> >
> >
> ____________________________________________________________________________
> _______________________
> >
> >
> > The following statement is Company policy and must be sent with every
> > e-mail.
> >
> > This e-mail is confidential and may contain information that is legally
> > privileged. If you are not the intended recipient of the e-mail or have
> > received it in error, do not disclose its contents to anyone. Please also
> > contact the sender immediately. The views of the author may not
> necessarily
> > reflect those of the Company.
> >
> ____________________________________________________________________________
> _______________________
> >
> >
> >
> >
>
> MODEL ENGINEERING DISCUSSION LIST.
>
> To UNSUBSCRIBE from this list, send a blank email to,
> modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
> line.
>
>
MODEL ENGINEERING DISCUSSION LIST.
To UNSUBSCRIBE from this list, send a blank email to,
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.
Other related posts:
