Humbug
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| posted on 25/10/09 at 08:59 AM |
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Mini wiper questions
From my experiments with a bit of cardboard a protractor and the wiper arm I can see that with a left park mini wiper setup I am going to be left with
quite a big triangle of unwiped screen on the bottom of the driver's side.
From searching on here it is supposedly possible to reduce the sweep of the mini wiper motor from 110 degrees to something less by moving the pivot
point of the drive arm thingy (somebody said put it on the oppostie side closer to the centre). My question is: how, exactly?
I have dismantled the relevant bits following the excellent SVC diagram, but I can;t see how you would move the metal post thingy as it is welded in.
Am I missing something, or can anyone give me some specific steps to follow (I haven't got a welder).
Alternatively, I could make itpark on the right by turning the wheel boxes the other way up... no problem, but then my wiper arms will angle the wrong
way. The arms are original mini ones with the shaft removed and cut down. I could just taken the shafts off again and turn them over, but then the
little raised dot that keeps the wiper blade on would be on the wrong side (I've tried it and the wiper blade slides off fairly easily like
that). So, and tips on how to make the wiper blades stay on if I turn the arms over?
TIA
Simon
[Edited on 25.10.2009 by Humbug]
 
Rescued attachment Wiper bits.JPG
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theconrodkid
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| posted on 25/10/09 at 09:12 AM |
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i vaguely remember doing this on sweet pea one,i think i ground off the pin and moved it a bit nearer to the centre,one or both of the wheel boxes
were turned upside down as well for some reason
who cares who wins
pass the pork pies
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2cv
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| posted on 25/10/09 at 09:20 AM |
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The pin is brazed in and can be removed and moved further in towards the centre. Ideally it's a job for two people;one holding the peg with long
nose pliers, the other operating the oxy-acetylene torch.
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Bluemoon
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| posted on 25/10/09 at 09:31 AM |
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I would change the parking direction, the arms are not to expensive, if this looks o.k. On mine the holes for the wheel boxes are not quite
symmetric, (so I can't swap parking direction, it is fixed to be to the right). My sweep must be close to 110deg.
Note you will need to bend arms anyhow to get them in the correct place when parked, so you might get away with re-bending them (not going to say this
will work, they may snap!).
I think mine do run upside down (with the pip on the wrong side), I guess my blades are different. (If you want to know U2U me and I'll check).
I think moving the pin does involve welding..
Cheers
Danj
[Edited on 25/10/09 by Bluemoon]
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BenB
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| posted on 25/10/09 at 09:31 AM |
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A shorter wiper blade arm and a slightly longer blade might be an option. I've got left hand park and it's absolutely fine... No unwiped.
You want a short blade arm so that the blade almost rotates around the "bottom" of the wiper blade.
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GeoffT
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| posted on 25/10/09 at 09:35 AM |
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quote:
From searching on here it is supposedly possible to reduce the sweep of the mini wiper motor from 110 degrees to something less by moving the pivot
point of the drive arm thingy (somebody said put it on the oppostie side closer to the centre). My question is: how, exactly? I have dismantled the
relevant bits following the excellent SVC diagram, but I can;t see how you would move the metal post thingy as it is welded in. Am I missing
something, or can anyone give me some specific steps to follow (I haven't got a welder).
Simon,
As mentioned at Newlands last week, I reduced the sweep by redrilling the pivot point 180 degrees around the wheel and slightly inwards towards
the centre. All done several years ago now, but from memory I think I moved it inwards around 2mm to reduce the sweep to about 90 degrees.
This obviously means that they would now park at the other end of the sweep, but, again from memory, I think I rotated the park switch assembly
through 180 to correct this.
Unfortunately it did involve the 'w' word - the mig welder. I drilled out the existing weld from the back of the plate and punched out the
pivot post, pressed it into a newly drilled hole as described and secured with a small plug weld at the back of the hole.
This all assumes that the assembly that you've got is the same as mine - if any of this doesn't make sense, then there may be some
variation.
See u2u re: welding btw.....
Geoff.
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Humbug
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| posted on 25/10/09 at 09:59 AM |
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Thanks for the replies, chaps.
I will have another look at the wipers as they are... maybe my measurements are not very good!
Ben - I have still got the windscreen photos you sent me... unsurprisingly, there are none that show the coverage at full sweep, so to speak
(presumably because your park switch works!)
Geoff- thanks for the offer of welding... I think if it is that much effort I might give it a miss.
Thinking about the wiper arms question: maybe putting a generous blob of solder in the hole/dimple would make enough of a dot to hold? I can try that
without it being irreversible.
Simon
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MikeRJ
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| posted on 25/10/09 at 11:07 AM |
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You can buy different drive wheels and wheel boxes for the Lucas wipers from SVC.
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Humbug
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| posted on 25/10/09 at 06:41 PM |
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OK guys - thanks for all the hints and tips. I ended up measuring again (and again several more times!) and decided to keep with left parking wipers.
After measuring up where I thought the driver's side wiper should go I checked the pics and measurements that BenB (Stuart Taylor + Caterham
screen, same as me) sent and found they were almost the same (thanks Ben)... drilled a hole for the driver's side, fitted the arm and it worked
with only a fairly small uncleared area! Then fixed the passenger side per Ben's measurements.
I cut down the outer tubing centre and made a small flare with pliers. I also cut down the outer tubing nearest to the motor.
Now a few more jobs to finish: make a bracket for the motor, fit the washers, then strip the whole scuttle down, fill the holes and repaint it. Jobs
for another weekend!
Cheers
Simon
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BenB
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| posted on 25/10/09 at 10:48 PM |
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 glad to hear it's sorted!!
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sebastiaan
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| posted on 30/10/09 at 07:34 PM |
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I'm trying to tackle this job myself at the moment.
BenB, would it be possible for you to post your measurements on here for us all to look at?
Thanks,
Sebastiaan
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mattg8000
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| posted on 16/11/09 at 03:47 PM |
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FAO Humbug or BenB or sebastiaan
Hi all - I too am going to attempt to fit some wipers (mini lucas ones) to my ST. If any of you have the mesaurements BenB sent to Humbug could you
post them here?
I have that sinking feeling that without some help, no matter how many times I measure, my scuttle will end up looking like a colinder by the time
I'm finished!
Matt
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sebastiaan
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| posted on 16/11/09 at 08:17 PM |
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I've gone for 280mm between the wiper boxes and have both boxes placed symetrically around the vehicle centreline. Still to order wipers, but it
seems to be OK by using mock-up wipers.
Boxes are around 37mm spaced from the front of the windscreen.
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mattg8000
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| posted on 20/11/09 at 08:32 PM |
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Thanks for the info - I'll let you know how I get on when (if?) I finish the install!
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