Marcos Maniacs

Hi All,
Just thought I'd give everyone an update on my wiper mess.
I spent a LOT of time this weekend, but it is finally fixed!
I ended up taking out the entire wiper mechanism to get it to work
though.
It seems that the tubes the leadscrew runs through were a bit bent. The
middle one was tight enough as it is, so the bends didn't help much.
After some straightening and much greasing (of everything involved!),
they seem to be working like a charm now.
BTW, the 120 degree gear is very important, as the wipers now cover the
correct amount of windshield and the automatic wiper park works.
 
So, for the record I now know that Marcos wiper systems contain:
Lucas 14W motor (motor internals are the same no matter application)
A 120 degree gear (special for Marcos-don't know of any other
applications at this time).
 
I also became very intimate with my dash, dash wiring, switches, gages,
and other odd bits I accidentally broke along the way!
Anyway, I was able to get her on the road a little, and I must say.
Marcos are not like anything else I've ever driven!
 
Now. on to the reverse lights..
 
Happy Marcosing,
Jeff Caraway
#8052 1984 V6 GT (now with working wipers!)
 
 
 
 
-----Original Message-----
From: Bob Magnotti [mailto:rhdspritemk1@...] 
Sent: Monday, October 22, 2001 9:04 PM
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] Re: More Wiper motor/ gearing questions.....
Please help!!!!
 
Another point about British wiper systems is that the leadscrew that 
drives them usually only runs against half of the gear on the wiper 
post.  Over the years the gear teeth can become worn and sloppy.  It 
is possible to position the drive gear in each wiper post to use the 
other half/side, which should be in excellent condition provided the 
wiper lead screw cable and wiper motor have not been removed and 
reinsalled by a previous owner.  Remove the wipers from the 
windscreen then from inside the dash remove the two screws that hold 
the rear plate on the wiper post.  You should be able to pull the 
leadscrew cable and cable tubes out enough to spin the wiper posts 
180 degrees then reassemble.  Its worth a try?

My experience with the Sprite/Midget wiper systems has taught me that 
they are not worth the junk they are made from.  They, IMHO are to 
small and not built heavy enough.  The average wiper on a Sprite is 7 
inches long and are very light, and about a 90 degree arc.  The 
Marcos has a longer leadscrew, and larger/heavier wiper blades and 
arms along with a heavier tension spring to hold the wipers against 
the windscreen.  I think I will stick witht the manual system of 
shutting off the wipers until I can identify and locate the proper 
degree wheel for the motor in my car.  When I go to British car shows 
I always look at the wiper motors in the various cars and to date 
have not seen the type of motor used in my car.  The closest I saw so 
far was in a Jag 12 cylinder sedan Series 3.

Bob Magnotti





--- In MarcosManiacs@y..., David Skora <David@a...> wrote:
> Hello Bob
> Wake up!!!! We can't just go down to the local Marcos dealer now 
can we. SO
> get the puny little wiper motor in your marcos and try it. Capich
> Dave 5006
> 
> > -----Original Message-----
> > From:      Bob Magnotti [SMTP:rhdspritemk1@y...]
> > Sent:      Monday, October 22, 2001 1:40 PM
> > To:      MarcosManiacs@y...
> > Subject:      [MarcosManiacs] Re: More Wiper motor/ gearing 
questions.....
> > Please help!!!!
> > 
> > Jeff,
> > 
> > I have been looking for the correct wiper motor for my car also.  
I 
> > broke the park sensor mounting tab which means I have to manually 
> > turn the switch off at the correct time.  That is they will not 
go to 
> > rest position when you switch them off.  No big deal, I can do 
that.  
> > I have found listings for a Sprite wiper motor but that moror is 
> > physically smaller than the one in my car.  I think it being 
smaller 
> > would mean less drive power also.  I have not tried one of those 
> > motors, even though I have several of them.  The 120 degrees is 
the 
> > actual sweep arc of the wipers and 120 is what is in my car.  The 
> > actual sweep drive gear is bout 3.5 to 4 inches in diameter.  Is 
that 
> > what you have now?
> > 
> > Bob Magnotti
> > 68 GT #5179
> > 
> > 
> > 
> > --- In MarcosManiacs@y..., "Jeff Caraway" <DovenWolf@c...> wrote:
> > > Hi All,
> > > I finally got my replacement wiper motor in this weekend, but 
am not
> > > sure that it is quite right.
> > > It moves fairly slow and almost grinds to a halt on a dry 
> > windshield,
> > > and the "high" speed is even worse and can barely move.
> > > It acts OK with the wiper arms off or on a wet windshield, but 
I 
> > still
> > > wonder if it is right.
> > > I used a replacement motor that was sent to me. It looked the 
same, 
> > but
> > > the origin of the motor is unknown. The only real difference I 
did
> > > notice is that the main gear in the original has 120 degrees 
> > stamped on
> > > it and the replacement had 105 degrees. At first I though this 
was a
> > > position marker for the gears, however the more I think about 
it, I 
> > am
> > > lead to believe that the number indicates the arc that the 
wipers 
> > will
> > > follow.
> > > Now, if this is the case, would the 120degree gears have more 
> > torque and
> > > cover more of the windshield than the 105?
> > > Or, could it actually be a weaker motor even though that part 
looked
> > > exactly the same?
> > > I am leaning towards changing the gears because I wouldn't 
think 
> > that
> > > they (Lucas) would radically change a 14W motor for each 
> > application.
> > >  
> > > Can anyone add their opinion/ knowledge/ experience?
> > >  
> > > I'd really like some second opinions before I go ripping the 
whole 
> > lot
> > > back out to change the gears.
> > >  
> > > Thanks,
> > > Jeff Caraway
> > > #8052 1984 V6 GT
> > 
> > 
> > 
> > To unsubscribe from this group, send an email to:
> > MarcosManiacs-unsubscribe@y...
> > 
> >  
> > 
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http://docs.yahoo.com/info/terms/ 
> >


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