More wheels

PostPost by: abstamaria » Wed Aug 10, 2005 11:45 am

The ultimate Elan wheel may be the magnesium wheels the factory fitted on
the 26Rs. They are very light and are of course "correct" for the Elan, and
they do come in a knock-off version. New replicas are available at the
sites mentioned by other listers earlier. The wobblies, so far as I know,
will not fit and were never used on the Elan by the factory.

I weighed the 26R wheels when I first received them some time ago and,
reviewing on my journal, find the following weight comparison:

Original steel (KO) wheel with Dunlop SP Sports: 30 lbs..
Magnesium 6" 26R (KO) wheel with Dunlop CR65s: 21 lbs.

I was surprised my steel wheel/tire combo weighs more than the 26 lbs that
Tom Moore mentioned. Perhaps the Series 4 KO wheels are heavier. Since the
tires are off my steel wheels, I can't verify. Can someone do this?
However, I did have the same mag/CR65 set handy and weighed these again on
my trusty bathroom scale: about 21 lbs. Note that the CR65s are also very
light.

The 26R wheels use a different knock-off (do the English say "knock-on"?),
made in aluminum. When I first got them, I weighed the alloy KOs and the
standard KOs on my wife's baking scale (500 grams maximum). Results as
follows:

26R aluminum KO: 190 grams (about 6-1/2 ounces)
Standard Federal KO: 315 grams
Standard "eared" KO: Off the scale! (over 500 grams)

So more unsprung weight savings there.

Magnesium wheels I don't believe are prone to cracking, as was stated by a
well-meaning lister. I had an "off" during a race and bent one against a
wall. It twisted and deformed, but didn't crack. If anything, it is
probably more reliable, stiffer, and stronger than the standard steel wheel.
It also will not burst into flames, except in very high heat (in which case
one has bigger problems than a burning wheel). I read the danger might be
in very thin sheet magnesium, but again very intense heat is necessary.

The biggest problem, in my experience, is corrosion. I have not noticed any
corrosion in my painted 26R wheels, but do have to keep polishing the
exposed outer rims on the Wobblies. The magnesium wheels on an Italian car
I have also seems more prone to corrosion, paint notwithstanding; I just had
to replace these. Magnesium corrosion just goes through the substance,
unlike aluminum, which corrodes at the surface. It is almost impossible to
stop magnesium corrosion once it starts.

The problem with the 26R KO wheels on the Elan is that one will need to
change the hub assembly, which makes the switch an even more expensive
proposition. Having done that, one can no longer use the standard KO
wheels.

The original Minilites I recall used a steel adaptor for splined Rudge
wheels (eg. Jaguar), which increased their weight. I do not believe they
ever had KOs for the Elan. The Panasports also have a steel adaptor, and
this may increase weight somewhat.

That may be more about wheels than you care to know, so my apologies.

Warm regards,

Andres
1969 DHC 45/8439
Manila
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PostPost by: s2lola » Wed Aug 10, 2005 12:56 pm

"Beware of magnesium wheels!"


OK, let's debunk the myth that mag is explosion prone - its not, except
under very certain circumstances. Those circumstances DO NOT include any
possible use on a road car. Rather, mag only poses a risk in certain states
of manufacture. For example, if you took a pure mag wheel and used your die
grinder on it WITH an open flame in the midst of the stream of mag dust
coming off the die grinder, that could be an unfortunate situation. But
cast mag does not pose any danger otherwise.

The bigger issue with mag, as someone noted, is corrosion. Most paints do
not work, as the mag simply corrodes under the paint and eventually the
paint falls off. Other than the Dow dichromate process (expensive and hard
to find), the only other coatings known to me that will work are a PPG
industrial coating called DP90 (any paint supplier can get it), or a fab
little rattle can paint called "NuCast" (available at your local hot rod
shop). Both of these are high in zinc content, which is the only way
they'll stick to mag. DP90 is spray gun applied, and I have done many
racing wheels with it - available in a variety of boring colours, but the DP
90 itself can be painted with any enamel to get the look you want.

The NuCast stuff, despite its origins, is fantastic. The mag gearbox case
on my March Formula Atlantic was done, and its tough as nails - seems to
even resist brake fluid, cleans up with Brake Clean. I'm really impressed.
Available in cast aluminum, cast iron, and a couple of other "colours" I
think.

BTW, welding mag is not a problem for any decent welder with a tig machine
and a knowledge of welding rod. Many, many formula ford bits are mag and
have been well welded over the years - trust me!

Cheers,
Bill Tebbutt


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PostPost by: ddddumas » Wed Aug 10, 2005 5:57 pm

--- In ***@***.***, "Steve Foster" <sotuknang@a...>
wrote: "...I searched back through the archives to figure out how
much wheels weigh. I found out that a stock S2 "knock-on" wheel
weighs about 12 lbs. I also discovered from the R.D. Enterprises
web site that a "knock-on" Panasport weighs in at about 11.25...I
have a hard time getting really jazzed about spending $900 and
saving 3lbs of unsprung weight... thanks -Steve
--------------------
Magnesium is very brittle, and for racing only; they need to be
crack checked constantly.

The flywheel effect is all about momentum, but it takes more power
to move the heavier wheel, or any object for that matter, in order
to build up that momentum.

Unrequired weight is always the enemy. Unsprung weight in wheels
and suspension is very critical to responsive handling; the less
weight the better. Generally, the less unsprung weight, the tighter
and faster suspension control.

I'm surprised the 13" Panasports weigh so much. Many years ago I
owned some 13" dia. x 7" wide American Racing Equipment four-
spoke "Libre" wheels, and they weighed a tad less than 8 lbs. each.

I agree about modern aftermarket street "alloy" wheels are silly,
and for looks only. Many of them weigh more that the OEM wheels
they replace; the popular 16", 17" and 18" dia wheels often weigh
well over 30 lbs. each. I asked one of the biggest aftermarket
wheel dealers about what a particular the wheel weighed, and he said
no customer had ever asked him that question before.
Paul Garrett
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PostPost by: type36lotus » Wed Aug 10, 2005 10:46 pm

What timing! I'm looking for new wheels for my WRX. It is amazing
how the same dimension wheel can vary so much in weight. What I have
looked at so far;

Kosei K1 TS, 17 x 7, low pressure cast, 14.6 Lbs (Fragile?)

Subaru WRX STI BBS 17 x 7.5, forged, 16.5 Lbs (FORGED and BBS!)

Prodrive O.Z. P1 17 x 7, Low pressure cast, 19.5 Lbs (As strong as
BBS?)

And of course there were plenty at 22 - 25 Lbs. 4 corner anchors.

I have not been able to find the weight of my current 16 x 6.5(?)
wheels to determine how much additional weight I will be adding.

Mike
--- In ***@***.***, "Paul Garrett" <pgarrett@p...> wrote:
...

Mike Geiger
66 S3 Coupe', no more :-(
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PostPost by: lotuselan2 » Wed Aug 10, 2005 10:52 pm

Mike

Did you check any 3-piece wheels?



Ken

'69 Lotus Elan +2 with BDR

_____

From: ***@***.***lto:***@***.*** Behalf
Of Michael Geiger
Sent: Wednesday, August 10, 2005 6:46 PM
To: ***@***.***
Subject: [LotusElan.net] Re: More wheels



What timing! I'm looking for new wheels for my WRX. It is amazing
how the same dimension wheel can vary so much in weight. What I have
looked at so far;

Kosei K1 TS, 17 x 7, low pressure cast, 14.6 Lbs (Fragile?)

Subaru WRX STI BBS 17 x 7.5, forged, 16.5 Lbs (FORGED and BBS!)

Prodrive O.Z. P1 17 x 7, Low pressure cast, 19.5 Lbs (As strong as
BBS?)

And of course there were plenty at 22 - 25 Lbs. 4 corner anchors.

I have not been able to find the weight of my current 16 x 6.5(?)
wheels to determine how much additional weight I will be adding.

Mike
--- In ***@***.***, "Paul Garrett" <pgarrett@p...> wrote:
...











CopyrightC LotusElan.net and the author:





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PostPost by: type36lotus » Wed Aug 10, 2005 11:38 pm

Last time I checked on 3 piece wheels was for my Esprit. They are
soooo far out of my price range. IIRC they were about $1,000 per
wheel!

--- In ***@***.***, "Lotus" <lotuselan2@c...> wrote:
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PostPost by: markvo » Wed Aug 10, 2005 11:44 pm

You can get 3 piece wheels from Kodiak motorsports in our sizes for little ovver $300 each.

Mark V
----- Original Message -----
From: Michael Geiger
To: ***@***.***
Sent: Wednesday, August 10, 2005 4:38 PM
Subject: [LotusElan.net] Re: More wheels


Last time I checked on 3 piece wheels was for my Esprit. They are
soooo far out of my price range. IIRC they were about $1,000 per
wheel!

--- In ***@***.***, "Lotus" <lotuselan2@c...> wrote:

















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PostPost by: Bill » Thu Aug 11, 2005 2:26 am

Mike

Is it really worth it?

I have a WRX and considered going to 17" OZ's. Mine is a road car only (forgroceries) and parts for the Elans. 'Tante worth it.

I have old Cosmics on the S1and I have to admit they are prettier than the origional bolt on pressed steel wheels (and cheaper by far) Perfect origional wheels are hard to find (and to keep restored as well) I must admit thatmy "spirited" back road driving in the Elan over the past 40+ years does no longer approach competition requirements for unsprung weight - but - whatthe hell it is all in the fun factor anyway.

Keep your stick on the ice

26/0538

Bill
----- Original Message -----
From: Michael Geiger
To: ***@***.***
Sent: Wednesday, August 10, 2005 3:46 PM
Subject: [LotusElan.net] Re: More wheels


What timing! I'm looking for new wheels for my WRX. It is amazing
how the same dimension wheel can vary so much in weight. What I have
looked at so far;

Kosei K1 TS, 17 x 7, low pressure cast, 14.6 Lbs (Fragile?)

Subaru WRX STI BBS 17 x 7.5, forged, 16.5 Lbs (FORGED and BBS!)

Prodrive O.Z. P1 17 x 7, Low pressure cast, 19.5 Lbs (As strong as
BBS?)

And of course there were plenty at 22 - 25 Lbs. 4 corner anchors.

I have not been able to find the weight of my current 16 x 6.5(?)
wheels to determine how much additional weight I will be adding.

Mike
--- In ***@***.***, "Paul Garrett" <pgarrett@p...> wrote:
...
















SPONSORED LINKS Plus Sprint Devoted
Including Enjoy Impressions


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***@***.***




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PostPost by: type36lotus » Thu Aug 11, 2005 11:26 am


OZ look nice. My Elan does have the standard pressed steel wheels.
I did think about minilites (or the current version). But decided
there are fewer and fewer original Elans around that I would make
mine the exception by it's originality.

Mike... Who can't keep his stick on the ice cuz' here in Florida
it's in my drink!


--- In ***@***.***, Bill Rathlef <billrathlef@s...>
wrote:


Perfect origional wheels are hard to find (and to keep restored as
well) I must admit that my "spirited" back road driving in the Elan
over the past 40+ years does no longer approach competition
requirements for unsprung weight - but - what the hell it is all in
the fun factor anyway.














Mike Geiger
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PostPost by: rodbean » Thu Aug 11, 2005 2:32 pm

Hello Andres,

The original magnesium Minilites were indeed available in either bolt-on
or knock-off configuration. I have a set of knock-off Minilites (mag).
They are from John Clark's slalom-prepared Elan that I co-drove a few
times in the seventies.

The wheels are 13 x 6 with a custom offset for an Elan without flares
(but with judicious grinding here and there). They were used on John's
S4 Elan which he had also been using as his main street transportation.
When John decided to get a S1 1/2 Elan for exclusive slalom use for
both of us to drive, and which would have flares and 10" wide Revolution
(knock-off) wheels, I bought the Minilites from him on the chance that I
would want to make one of my (S1/S2) Elans into a compromise car similar
to John's S4.

The wheels each have a steel piece in the center to accept the knock-off
nut. John used the hex nut. I would have used the eared nut in my
application. The wheels still have mounted the very narrow looking (now
hard as rocks) 6" Dunlop slicks that we used.

Rod Bean
(S1, S1, S1, S2)

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PostPost by: Bill » Fri Aug 12, 2005 12:10 am

Mike.

My origional pressed steel bolt ons are WD40ed and in plastic bags standingby for origionallity, my Cosmics have been on the car for over 30 years because it is cheaper than attempting to ever repair the origionals.

Hey, and hockey is back! (Maybe not with the Panthers) - Go Canucks!!

Bill
----- Original Message -----
From: Michael Geiger
To: ***@***.***
Sent: Thursday, August 11, 2005 4:26 AM
Subject: [LotusElan.net] Re: More wheels



OZ look nice. My Elan does have the standard pressed steel wheels.
I did think about minilites (or the current version). But decided
there are fewer and fewer original Elans around that I would make
mine the exception by it's originality.

Mike... Who can't keep his stick on the ice cuz' here in Florida
it's in my drink!


--- In ***@***.***, Bill Rathlef <billrathlef@s...>
wrote:


Perfect origional wheels are hard to find (and to keep restored as
well) I must admit that my "spirited" back road driving in the Elan
over the past 40+ years does no longer approach competition
requirements for unsprung weight - but - what the hell it is all in
the fun factor anyway.





























SPONSORED LINKS Plus Sprint Devoted
Including Enjoy Impressions


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PostPost by: abstamaria » Fri Aug 12, 2005 1:24 am

Hello, Rod.

It's good to hear from you. I never knew those Minilites existed! Now, I
know better. Do they have holes for the original peg drive?

Considering the nature of magnesium, your Minilites must by now be very
rare. Take good care of them! I would fit them even on a road car. Would
the original 155s be too narrow for the 6" rim?

Warm regards,

Andres
45/8439
Manila
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PostPost by: Elan45 » Fri Aug 12, 2005 2:08 am

Andres,

My 45/26R has S1 26R wheels (5-1/2" wide) for street tires and S2 26R (6" wide)wheels with race tires fitted. It has a spare fitted into the boot of aS1 wheel w/ I believe one of the original 145R 13 Dunlop SP radials. It fits on, but would look rather strange if 4 were fitted to the car. It accomplishes the goal of a spare though.

I'm also wondering if you may have gotten the alum alloy 26R repro wheels. My original wheels aren't as light as the mag American Silverstones, but they compare w/ the wobblies on the 20/22 or 23. And there were some companies making both alloys in this pattern.

Roger



It's good to hear from you. I never knew those Minilites existed! Now, I
know better. Do they have holes for the original peg drive?

Considering the nature of magnesium, your Minilites must by now be very
rare. Take good care of them! I would fit them even on a road car. Would
the original 155s be too narrow for the 6" rim?

Warm regards,

Andres
45/8439
Manila

























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PostPost by: abstamaria » Fri Aug 12, 2005 2:49 am

Hello, Roger,

Thanks for the information. I do have the magnesium 26R wheels
(reproduction from TTR), which are as light my Wobblies. How much do your
wheels weigh?

Do you have bolt-on 26R wheels? I assume they fit on the standard hubs?
The KO 26R wheels need special hubs, as you know, which won't take the
standard wheels.

I was looking at period pictures of the Elan as reference (to see where to
reinstall the "S4" and "World Champion" badges on the sides) and was struck
at how good the Elan looks high off the ground with skinny tires. I first
saw the Elans that way but had forgotten. I was wondering if I could fit
155R13s on the 6" 26R rims, but decided this probably wasn't a good idea. I
have Dunlop racing CR65s on, which look vintage but look fatter.

Warm regards,

Andres
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PostPost by: Thornts » Fri Aug 12, 2005 9:56 am

On the subject of wheels, my pressed steels have been abused and are
suffering from 'oblonged' peg holes.

Anyone have any experience of repairing this fault? All bright ideas
gratefully accepted.

Many thanks list

Rob

S3 SE FHC

-----Original Message-----
From: ***@***.***lto:***@***.***
Behalf Of Bill Rathlef
Sent: 12 August 2005 01:06
To: ***@***.***
Subject: Re: [LotusElan.net] Re: More wheels


Mike.

My origional pressed steel bolt ons are WD40ed and in plastic bags standing
by for origionallity, my Cosmics have been on the car for over 30 years
because it is cheaper than attempting to ever repair the origionals.

Hey, and hockey is back! (Maybe not with the Panthers) - Go Canucks!!

Bill
----- Original Message -----
From: Michael Geiger
To: ***@***.***
Sent: Thursday, August 11, 2005 4:26 AM
Subject: [LotusElan.net] Re: More wheels



OZ look nice. My Elan does have the standard pressed steel wheels.
I did think about minilites (or the current version). But decided
there are fewer and fewer original Elans around that I would make
mine the exception by it's originality.

Mike... Who can't keep his stick on the ice cuz' here in Florida
it's in my drink!


--- In ***@***.***, Bill Rathlef <billrathlef@s...>
wrote:


Perfect origional wheels are hard to find (and to keep restored as
well) I must admit that my "spirited" back road driving in the Elan
over the past 40+ years does no longer approach competition
requirements for unsprung weight - but - what the hell it is all in
the fun factor anyway.





























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