Variable Intermittant Wipers

Frequently asked technical questions and common modifications/improvements
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mat_fenwick
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Re: Variable Intermittant Wipers

Post by mat_fenwick » Thu Jul 05, 2012 11:31 am

Dead easy - just undo the nut on the linkage (in the park position it is all in a line) and then move the wiper to the other side. At this point the linkage should still be in a line, but the opposite way round. It will all make complete sense once you see it, honest!
I tried it briefly but found the wiper constantly sitting in my field of vision more annoying than the occasional trickle of water coming up the screen, which never really was a big problem for me in the first place. I suppose I could put it in the centre if I was so inclined...
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Dollywobbler
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Re: Variable Intermittant Wipers

Post by Dollywobbler » Thu Jul 05, 2012 1:13 pm

I've pondered that change too. Might yet try it as the linkage is squeaking so I'm likely to pull the whole lot out for a proper lube session anyway.

The trickle effect is bloody infuriating I must admit - reduced if you adjust the wiper so it sweeps nice and low on that side.

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Re: Variable Intermittant Wipers

Post by citsncycles » Wed Oct 10, 2012 7:33 pm

Just fitted one of these to Timex, and can confirm that it works on Mk1's too with 1 minor difference - if you want to reduce the delay you have to switch it off and back on again, as switching to constant and back makes no difference.
Mike Sims
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Re: Variable Intermittant Wipers

Post by Dollywobbler » Wed Oct 10, 2012 7:45 pm

That's as I'd expect Mike. Don't think anyone said anything about being able to reset the wipe interval from full-on setting.

I very hastily swapped the relay from Green Tiger to TXD. Forget the variable intermittent - it's worth it just to have fewer wipes when you wash. PSA stuff always seems to wipe too many times, usually starting to smear again during the winter months. Annoying!

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Re: Variable Intermittant Wipers

Post by citsncycles » Wed Oct 10, 2012 7:48 pm

I think Mat's original post mentioned it, but I could be wrong.
Mike Sims
BX 19RD Estate Mk1 - Timex!
BX 4X4 Estate - Oh god, I've done it again!
BX 17RD MK1 - it called to me!
BX14 TGE, - SOLD
XM Turbo SD,GS Club Estate,Visa 17D Leader,HY Pickup,Dyane Nomad,Dyane 6,2CV AZL,Falcon S,Trabant P50,3x Land Rovers (88" series 1,109" series 2a FFR,series 2a Marshall ambulance),DKW F7, Lambretta LD150 x 1.5,Mobylette SP93,Ural Cossack,Ural M63,CZ 250 Sport,Honda Varadero 125,lots of bicycles & tricycles including (but not only) Sunbeams,Higgins & Bates!

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Re: Variable Intermittant Wipers

Post by mat_fenwick » Wed Oct 10, 2012 10:18 pm

I'm sure mine does - if it rains tomorrow :rofl: I'll double check!
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Re: Variable Intermittant Wipers

Post by frog » Thu Oct 11, 2012 3:25 am

Not sure if this has been mentioned. I've fitted S1 405 stalks in my bx - the wiper stalk has a half that twists controlling the intermittent interval time. Obviously they look different but they're still nice.
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Re: Variable Intermittant Wipers

Post by mat_fenwick » Thu Oct 11, 2012 8:20 am

It's been mentioned, but not in any detail. Did you also have to change the relay? Were the stalks a straight swap wiring and fixing wise?
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1993 1.9 TZD Turbo Estate
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1993 VW LT35 campervan
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Re: Variable Intermittant Wipers

Post by mat_fenwick » Thu Oct 11, 2012 10:38 am

citsncycles wrote:Just fitted one of these to Timex, and can confirm that it works on Mk1's too with 1 minor difference - if you want to reduce the delay you have to switch it off and back on again, as switching to constant and back makes no difference.
I can confirm that on mine at least, flicking briefly to full on from intermittent reduces the delay. Interestingly, it doesn't on the van. That might mean there's slighthly different relays (although both marked as 99) but I think more likely it's down to the indicator stalk switch itself.

On the Mk2 BX it appears to be a break before make type, i.e. if you move the stalk slowly from one position to the next there will be a halfway point at which the wipers will stop. So when you move from intermittent to full on, you're actually flicking them off very briefly, and it may be the tranistion from off back to intermittent (rather than the intermittent to full on transition) which actually resets the interval. If the Mk1 switchgear goes straight from one setting to the other, i.e. a make before break type (it's easier to determine going from normal to fast speed) you won't get this. Hope that makes sense!
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1993 1.9 TZD Turbo Estate
2006 Renault Kangoo
1996 3.9 V8 Discovery
1993 VW LT35 campervan
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Re: Variable Intermittant Wipers

Post by frog » Thu Oct 11, 2012 11:34 am

405 S1 stalks are a straight swap, no relay change needed. The rubber shroud on the wiper stalk (that sits inside the steering column surround does sit a touch further out but no modification needed. I'll take a picture tomorrow.
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Re: Variable Intermittant Wipers

Post by citsncycles » Thu Oct 11, 2012 8:15 pm

On the Mk2 BX it appears to be a break before make type, i.e. if you move the stalk slowly from one position to the next there will be a halfway point at which the wipers will stop. So when you move from intermittent to full on, you're actually flicking them off very briefly, and it may be the tranistion from off back to intermittent (rather than the intermittent to full on transition) which actually resets the interval. If the Mk1 switchgear goes straight from one setting to the other, i.e. a make before break type (it's easier to determine going from normal to fast speed) you won't get this. Hope that makes sense!
Tried this in the rain earlier (I had plenty of opportunity today) and the Mk1 switch seems to be break before make too, but it's a much smaller gap than I remember on a Mk2. While experimenting with this, I did manage to get it to alter the delay by slowly switching to constant too, so it seems that it needs to be off for a minimum period to alter the delay time.
Mike Sims
BX 19RD Estate Mk1 - Timex!
BX 4X4 Estate - Oh god, I've done it again!
BX 17RD MK1 - it called to me!
BX14 TGE, - SOLD
XM Turbo SD,GS Club Estate,Visa 17D Leader,HY Pickup,Dyane Nomad,Dyane 6,2CV AZL,Falcon S,Trabant P50,3x Land Rovers (88" series 1,109" series 2a FFR,series 2a Marshall ambulance),DKW F7, Lambretta LD150 x 1.5,Mobylette SP93,Ural Cossack,Ural M63,CZ 250 Sport,Honda Varadero 125,lots of bicycles & tricycles including (but not only) Sunbeams,Higgins & Bates!