Kees,
As mentioned the tie rod limits the fore/aft motion of the
engine/gearbox assembly. The gearbox mounting also includes a bracket
with a rubber block on the left and right sides of the OD or gearbox
extension (torsional) and a rubber bumper on the bottom side for the
downward motion.
Cheers,
Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php
On 10/23/2015 06:32 AM, Oudesluys wrote:
> I did not realise that the tie rod was orientated front/rear. In that
> case you are absolutely right.
> These rods are more usually used to prevent torsional movement of the
> engine to keep clutch judder (amongst others) in control. I those cases
> I would go for rubber bushes.
> Kees Oudesluijs
>
>
>
> Op 23-10-2015 om 4:27 schreef WILLIAM B LAWRENCE:
>> I think I disagree. The main purpose of the tie rod is to keep the
>> engine from shifting forward and damaging the radiator. It has very
>> little function as a shock absorber. Its orientation to the engine
>> center line means there is little vibration in that direction. On the
>> other hand the rubber bushings fail very quickly on exposure to oil
>> and water. if the bushings fail and allow the engine to move forward
>> under braking it can do some substantial damage. I think Austin
>> probably would have used a more durable material in that place if one
>> had been available (and economic). My car is not concours and never
>> will be so my emphasis is going to be on durability. I'm definitely
>> going to urethane for this application.
>>
>> Bill Lawrence
>>
>> > To: healeys@autox.team.net
>> > From: coudesluijs@chello.nl
>> > Date: Thu, 22 Oct 2015 12:14:23 +0200
>> > Subject: Re: [Healeys] Suspension bushings - tangent
>> >
>> > I do not think so as this also has to work as a vibration damper and
>> > rubber is better in that respect than PU. Perhaps you can fit a sleeve
>> > around it to protect it from oil.
>> > Kees Oudesluijs
>> >
>> >
>> > Op 22-10-2015 om 12:04 schreef Bob Haskell:
>> > > Larry and Michael,
>> > >
>> > > Would you use urethane bushings for the engine tie rod (lower/rear
>> > > gearbox/OD mount)? Urethane doesn't deteriorate like rubber when oil
>> > > soaked. But it doesn't absorb as much shock loading either.
>> > >
>> > > Cheers,
>> > >
>> > > Bob Haskell
>> > > AHCA 3000 Mk I registrar
>> > > http://www.ciahc.org/registry_3000mk1.php
>> > >
>> > > On 10/22/2015 04:04 AM, Larry Varley wrote:
>> > >> Absolutely agree with Michael here, from past experience I would
>> > >> completely avoid urethane for any car to replace original rubber
>> bushes.
>> > >> Its a pity that the correct rubber bushes are not made, but I would
>> > >> still use the reproductions rather than urethane. From an engineering
>> > >> standpoint urethane has a totally different way of operating to
>> what the
>> > >> car was originally designed for, stretching rubber fixed against
>> steel
>> > >> surfaces is not the same as rotating urethane on a pin. Has
>> anyone ever
>> > >> asked any of the urethane bush manufacturers if their products are
>> > >> approved by current auto manufacturers, or if they will accept
>> liability
>> > >> for any damage they will cause? I would prefer to stay with a product
>> > >> that is as close as possible to the original specification. In
>> closing,
>> > >> enlighten me, do any current auto manufacturers use urethane as their
>> > >> standard suspension bush?
>> > >> Cheers
>> > >> Larry Varley
>> > >>
>> > >> On 22/10/2015 7:08 AM, Michael Salter wrote:
>> > >>> Bob,
>> > >>> I suspect that I'm not telling you anything that you don't already
>> > >>> know here BUT:
>> > >>> I think the critical point is that the original suspension
>> bushes work
>> > >>> in the same way that rubber engine mounts are designed to work. The
>> > >>> steel mounting plates (or in the case of mounts steel tubes) are
>> > >>> rigidly attached to parts that move relative to each other and that
>> > >>> movement is accommodated by the flexing of the rubber medium
>> bonded to
>> > >>> each plate.
>> > >>> The plastic bushes work more like bearings in that the rotational
>> > >>> movement is accommodated by rotation of the bolt (shaft) within the
>> > >>> bush (bearing). All very well while you are flying straight and
>> level.
>> > >>> The problem, as I see it, is that when angular displacement is
>> > >>> required, as in body roll, the plastic bushes must distort and
>> as the
>> > >>> plastic is by necessity relatively rigid, when compared to the
>> > >>> original rubber, the loads imparted to the mounting points will be
>> > >>> substantially higher than that for which they were designed.
>> > >>> Maybe you will get away with it, maybe you won't., I just don't want
>> > >>> to be passing you in the opposite direction if you don't!!!!
>> > >>> Michael S
>> > >>> BN1 #174 (All rubber bushes :-))
>> > >>>
>> > >>
>> > >>
>> > >>
>> > >> _______________________________________________
>> > >> Support Team.Net http://www.team.net/donate.html
>> > >> Suggested annual donation $12.75
>> > >> Archive: http://www.team.net/archive
>> > >> Forums: http://www.team.net/forums
>> > >>
>> > >> Healeys@autox.team.net
>> > >> http://autox.team.net/mailman/listinfo/healeys
>> > >>
>> > >> Unsubscribe/Manage:
>> > >> http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net
>> > >>
>> > > _______________________________________________
>> > > Support Team.Net http://www.team.net/donate.html
>> > > Suggested annual donation $12.75
>> > > Archive: http://www.team.net/archive
>> > > Forums: http://www.team.net/forums
>> > >
>> > > Healeys@autox.team.net
>> > > http://autox.team.net/mailman/listinfo/healeys
>> > >
>> > > Unsubscribe/Manage:
>> > > http://autox.team.net/mailman/options/healeys/coudesluijs@chello.nl
>> > >
>> > >
>> > >
>> > > -----
>> > > Geen virus gevonden in dit bericht.
>> > > Gecontroleerd door AVG - www.avg.com
>> > > Versie: 2015.0.6172 / Virusdatabase: 4450/10869 - datum van uitgifte:
>> > > 10/22/15
>> > >
>> > >
>> >
>> > _______________________________________________
>> > Support Team.Net http://www.team.net/donate.html
>> > Suggested annual donation $12.75
>> > Archive: http://www.team.net/archive
>> > Forums: http://www.team.net/forums
>> >
>> > Healeys@autox.team.net
>> > http://autox.team.net/mailman/listinfo/healeys
>> >
>> > Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/ynotink@msn.com
>> >
>>
>> Geen virus gevonden in dit bericht.
>> Gecontroleerd door AVG - www.avg.com <http://www.avg.com>
>> Versie: 2015.0.6172 / Virusdatabase: 4450/10871 - datum van uitgifte:
>> 10/22/15
>>
>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net
>
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
|