Marcos Maniacs

-----Original Message-----
From: Dave Barton [mailto:dbarton62@...]
Sent: Monday, September 15, 2003 7:40 PM
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] Re: (no subject)

Hi Paul
I bet it looks great, are you going to Bronte on Sunday I am
definitely gonna be there this year without a car though ,next year I
hope to bring the Marcos........
Cheers Dave#5577






--- In MarcosManiacs@yahoogroups.com, pauldransfield@i... wrote:
> Hi guys,
>
> Well, I finally got my new wheels and tires mounted, and they
really do look
> quite spiffy, even if I say so myself. I was changing from
185/70R13 tires
> on 13 x 5.5" rims to 205/45ZR17 and 215/45ZR17 tires on 17 x 7"
rims. The
> slightly larger tires were put on the rear to correct a speedometer
which
> was over-reading. In retrospect, it would have been better to have
had a
> bigger backspace on the rear wheels because the tires protrude
beyond the
> wheel wells a little more than I wanted. They don't protrude beyond
the
> width of the car but they definitely could have been more inboard
by 3/4" or
> even an inch. The front wheels look exactly right. The car tended to
> understeer on hard cornering so I always thought the old wheels
needed a
> smaller backspace. There again, maybe the understeer was due to the
higher
> profile tires. The handling has dramatically improved with the car
feeling
> even more like it's on rails than before. I need to raise the back
of the
> car a little (by adjusting the shock seats) to avoid fouling on the
rear
> wheel arches under hard cornering. I'll then be able to determine
what
> became of the prior understeer.
>
> Even though the tire profile is a lot lower, the only time it feels
harsher
> is when I drive over severe ridges on the road surface. My old
tires must
> have been in a terrible state internally because the new ones feel
like I'm
> driving on glass, without a twitch or tremor, especially on the
highway.
> During a test run, I surprised myself when I was up to 100mph while
it felt
> like I couldn't be going more than 60. In comparison to before, the
car is
> now a pure joy to drive.
>
> Putting it all together was actually a lot more work than I
anticipated. The
> hardest part was replacing the front hubs because there was
insufficient
> clearance for the back of the new aluminum hubs to clear the bolts
holding
> the backplate assembly. On one side, the brake caliper was fouling
on the
> hub as well. I resolved the problems by using my trusty Dremel tool
to grind
> down a couple of mms off the side of the problem bolt heads and
about 1 mm
> from the caliper body to provide enough clearance. I had another
problem
> when I found that the old hub body had threads tapped into it and
the brake
> rotor was attached by bolts. The new hub was drilled and recessed
for nuts
> and bolts. I had to get some stainless steel bolts and cut them
down to the
> correct size so they wouldn't protrude beyond the wheel mounting
face.
> Fortunately the recesses for the bearings were the correct size or
I would
> have had a serious problem. Replacing those was quite
straightforward. It
> took 3 3/4 hours to do the first side and 1 1/4 hours to do the
other.
>
> The rear wheels were relatively easy because the stud holes were
already
> drilled for a 4.25 bolt circle. I just had to drive out the studs
and
> reposition them. The brake drums were also pre-drilled. It took an
hour to
> do the first side, mainly because one of the studs wouldn't
cooperate and I
> had to remove the brake shoes to get at it properly. The other side
took 20
> minutes.
>
> I'll have to get my hands on a digital camera and take a shot for
the web
> site so you can see how it turned out. It may appall purists but I
think the
> car looks significantly better with the larger wheels.
>
> Regards,
>
> Paul Dransfield
> 3 litre Volvo



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-----Original Message-----
From: Dave Barton [mailto:dbarton62@...]
Sent: Tuesday, September 16, 2003 9:57 PM
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] Re: Bronte

Will do Ron .........I did see your car 3 years ago at Bronte but
could not track you down.....hopefully this year
Cheers Dave #5577













--- In MarcosManiacs@yahoogroups.com, "McLeod, Ronald"
wrote:
> Dave . . .
>
> I will be at Bronte with the Mantis - unless it snows! Look me up.
>
>
> Regards . . . Ron McLeod
> 1970 Marcos Mantis P8/5858
>
>
>
> -----Original Message-----
> From: Dave Barton [mailto:dbarton62@y...]
> Sent: Monday, September 15, 2003 7:40 PM
> To: MarcosManiacs@yahoogroups.com
> Subject: [MarcosManiacs] Re: (no subject)
>
>
> Hi Paul
> I bet it looks great, are you going to Bronte on Sunday I am
> definitely gonna be there this year without a car though ,next year
I
> hope to bring the Marcos........
> Cheers Dave#5577
>
>
>
>
>
>
> --- In MarcosManiacs@yahoogroups.com, pauldransfield@i... wrote:
> > Hi guys,
> >
> > Well, I finally got my new wheels and tires mounted, and they
> really do look
> > quite spiffy, even if I say so myself. I was changing from
> 185/70R13 tires
> > on 13 x 5.5" rims to 205/45ZR17 and 215/45ZR17 tires on 17 x 7"
> rims. The
> > slightly larger tires were put on the rear to correct a
speedometer
> which
> > was over-reading. In retrospect, it would have been better to
have
> had a
> > bigger backspace on the rear wheels because the tires protrude
> beyond the
> > wheel wells a little more than I wanted. They don't protrude
beyond
> the
> > width of the car but they definitely could have been more inboard
> by 3/4" or
> > even an inch. The front wheels look exactly right. The car tended
to
> > understeer on hard cornering so I always thought the old wheels
> needed a
> > smaller backspace. There again, maybe the understeer was due to
the
> higher
> > profile tires. The handling has dramatically improved with the
car
> feeling
> > even more like it's on rails than before. I need to raise the
back
> of the
> > car a little (by adjusting the shock seats) to avoid fouling on
the
> rear
> > wheel arches under hard cornering. I'll then be able to determine
> what
> > became of the prior understeer.
> >
> > Even though the tire profile is a lot lower, the only time it
feels
> harsher
> > is when I drive over severe ridges on the road surface. My old
> tires must
> > have been in a terrible state internally because the new ones
feel
> like I'm
> > driving on glass, without a twitch or tremor, especially on the
> highway.
> > During a test run, I surprised myself when I was up to 100mph
while
> it felt
> > like I couldn't be going more than 60. In comparison to before,
the
> car is
> > now a pure joy to drive.
> >
> > Putting it all together was actually a lot more work than I
> anticipated. The
> > hardest part was replacing the front hubs because there was
> insufficient
> > clearance for the back of the new aluminum hubs to clear the
bolts
> holding
> > the backplate assembly. On one side, the brake caliper was
fouling
> on the
> > hub as well. I resolved the problems by using my trusty Dremel
tool
> to grind
> > down a couple of mms off the side of the problem bolt heads and
> about 1 mm
> > from the caliper body to provide enough clearance. I had another
> problem
> > when I found that the old hub body had threads tapped into it and
> the brake
> > rotor was attached by bolts. The new hub was drilled and recessed
> for nuts
> > and bolts. I had to get some stainless steel bolts and cut them
> down to the
> > correct size so they wouldn't protrude beyond the wheel mounting
> face.
> > Fortunately the recesses for the bearings were the correct size
or
> I would
> > have had a serious problem. Replacing those was quite
> straightforward. It
> > took 3 3/4 hours to do the first side and 1 1/4 hours to do the
> other.
> >
> > The rear wheels were relatively easy because the stud holes were
> already
> > drilled for a 4.25 bolt circle. I just had to drive out the studs
> and
> > reposition them. The brake drums were also pre-drilled. It took
an
> hour to
> > do the first side, mainly because one of the studs wouldn't
> cooperate and I
> > had to remove the brake shoes to get at it properly. The other
side
> took 20
> > minutes.
> >
> > I'll have to get my hands on a digital camera and take a shot for
> the web
> > site so you can see how it turned out. It may appall purists but
I
> think the
> > car looks significantly better with the larger wheels.
> >
> > Regards,
> >
> > Paul Dransfield
> > 3 litre Volvo
>
>
>
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