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oldtimer Guest
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Posted: Sat Feb 05, 2011 6:40 pm Post subject: adjusting the sweep/arc of a wiper motor? |
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I would be grateful if someone could tell me if such an exercise is feasible or,alternatively,more trouble than it is worth.
I have been toying with the idea of fitting a wiper to the rear window of my 1968 Volvo estate but the options for fitting same and positioning are limited.For this reason Iwondered if alteration to the swept area may increase my options.
My thanks in anticipation. oldtimer. |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Sun Feb 06, 2011 1:41 pm Post subject: |
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Hi
I would imagine its a case of changing the position of the crank pin on the drive wheel, you would have to cut or drill the old one out and weld or braze a new one in? if the pin is closer to the edge of the drive wheel, it should give a longer arc as the crank will be traveling further.
Dave |
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oldtimer Guest
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Posted: Sun Feb 06, 2011 2:25 pm Post subject: adjusting wiper arc |
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Hello Dave
My thanks for your reply.It gives me a concept when,before, I had only some vague,wooly headed thinking. I thought that it may not be too involved if motors were standard but many different sweeps would be required for many different applications.
Thanks again
John |
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peter scott
Joined: 18 Dec 2007 Posts: 7119 Location: Edinburgh
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Posted: Sun Feb 06, 2011 8:13 pm Post subject: |
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Hi John,
Dave's suggestion would certainly permit a reduced travel but I wouldn't have thought that there would be much scope to increase travel just because of the limits of the slide. The standard crank will probably be pretty near its maximum radius anyway.
Peter _________________ http://www.nostalgiatech.co.uk
1939 SS Jaguar 2 1/2 litre saloon |
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BigJohn
Joined: 01 Jan 2011 Posts: 954 Location: Wem, Shropshire
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Posted: Sun Feb 06, 2011 8:26 pm Post subject: |
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Have you thought of modifying a 240 estate one, I have no idea if it would fit, but it might be worth getting a scrapyard one just to see. Failing that I seem to remember my series 2 Landrover had a short sweep. |
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oldtimer Guest
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Posted: Sun Feb 06, 2011 10:29 pm Post subject: adjusting sweep/arc of wiper motor |
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Hello Peter and Big John
Thanks to both for your input.I am accustomed to Peter's long suffering tolerance but UK Dave and JOHN are recent recruits to the cause.
I suspect that I shall ,probably, do nothing on this matter but it pops up ad nauseam over the years since I have had this car for 37 years!.
I thank you all since you may well prove to be the catalyst this time.
John |
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BigJohn
Joined: 01 Jan 2011 Posts: 954 Location: Wem, Shropshire
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Posted: Sun Feb 06, 2011 10:37 pm Post subject: |
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I think an event like reversing into an unseen object due to crud on the back window might be more of a catalyst!! |
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Jim.Walker
Joined: 27 Dec 2008 Posts: 1229 Location: Chesterfield
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Posted: Tue Feb 08, 2011 6:38 pm Post subject: |
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I don't know about availability now, but many cars had the same remote wiper motor driving a wheel box via a spiral wound cable (rack).
Wheel boxes came with a variety of different sized gears to give differing sweeps.
Might it be possible to fit a remote motor with rack-drive to a suitable wheelbox.
I have a car with a Herald wiper motor driving Mini wheelboxes to reduce the sweep. _________________ Quote from my late Dad:- You only need a woman and a car and you have all the problems you
are ever likely to want". Computers had not been invented then! |
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oldtimer Guest
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Posted: Tue Feb 08, 2011 6:48 pm Post subject: adjusting wiper arc |
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Hello Jim,
I have long recognised you as another of the band of knowledgeable chaps on the forum and what you describe is the kind of setup I envisaged may exist to give makers the versatility without major changes to the design.
My thanks to you,as to the other cognoscenti.
John |
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