Lotus Elan

Suspension bushings

PostPost by: "Roger Sieling" » Mon Nov 07, 2005 1:11 pm

Bill,
I made bushings for my 20/22 out of Acetron, a lubricant filled brand name of a material similar to Delrin. They've worked quite well. I also made steel sleeves to fit over the bolts so the bushes pivot on them rather than the bolts themselves. The bolts lock the steel sleeves in place and the Acetraon bushes are pressed into the wishbones. I'm not so sure I'd want these on a street car though, as my Elan gives way more feedback then needed on truck worn freeways.

Roger

>> ***@***.*** 11/4/2005 9:49 AM >>>

Is Delron a feasible material in this application???

Cheers,
Bill Tebbutt


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PostPost by: "Bob Layman" » Mon Nov 07, 2005 6:08 pm

--- In ***@***.***, scott potter <[email protected]>
wrote:
> I am not worried about the compliance of standard bushings as
much as

their likely non-linear contribution to effective spring rate.
> Compliance, however is a concern

Hi Bob, you might also be able to source proper sized od bushes
with a

larger id, reducing the amount of rubber, and simply sleeving the
id to

the right size.
Scott
***************************************
Hi Scott,


Thanks for the info in your two posts. I had wondered about
dimensional tolerance of plastics that were machined. The idea
above, while great technically, is not legal for the SCCA Solo2 ASP
class as the proportion of metal to non-metal in the "replacement"
bushing is supposed to remain the same as "stock." However, I have
never heard of anyone being forced to take apart a bushing for this
measurement.

Regards,
Bob




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PostPost by: "denicholls2" » Tue Nov 08, 2005 1:53 pm

--- In ***@***.***, "Lotus" <[email protected]> wrote:
Scott

That is a good resource. I still like the offset option.
I "adjusted" the

rear toe-in of my +2 with offset bushes.


I have a set of four of these, as I recall, (but maybe 8) that came
with some Europa control arms I picked up. I'm guessing the bushes are
the same for the Elan. Not sure what they're made of but it's off-
white like Nylon, and they are offset. If you're interested, I'll take
some pics and measurements for you. They're hat-style and unused.

If nobody's interested, just how do you make sure the offset winds up
in the right place? I never figured this out. It seems to me they
would tend to migrate after installation. They're a tight, but I'd say
short of a press fit. It also seems it would be difficult to get them
in the right place when installing.

Doug Nicholls, 54/1822
"denicholls2"
 

PostPost by: lotuselan2 » Wed Nov 09, 2005 5:25 am

I set the offset by calculation and Loctite stud or bearing lock will keep
them in place, yes even the Teflon ones hold okay with it.



Ken

'69 Lotus Elan +2 with BDR

_____

From: ***@***.***lto:***@***.*** Behalf
Of denicholls2
Sent: Tuesday, November 08, 2005 8:54 AM
To: ***@***.***
Subject: Re: [LotusElan.net] Suspension bushings -- Part Deux



--- In ***@***.***, "Lotus" <[email protected]> wrote:
Scott

That is a good resource. I still like the offset option.
I "adjusted" the

rear toe-in of my +2 with offset bushes.


I have a set of four of these, as I recall, (but maybe 8) that came
with some Europa control arms I picked up. I'm guessing the bushes are
the same for the Elan. Not sure what they're made of but it's off-
white like Nylon, and they are offset. If you're interested, I'll take
some pics and measurements for you. They're hat-style and unused.

If nobody's interested, just how do you make sure the offset winds up
in the right place? I never figured this out. It seems to me they
would tend to migrate after installation. They're a tight, but I'd say
short of a press fit. It also seems it would be difficult to get them
in the right place when installing.

Doug Nicholls, 54/1822








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'69 Lotus Elan +2 with Cosworth BDR
'84 Ferrari 400i
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