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| Teflon-Mike |
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Teflon-Mike
tl;dr
Joined: 01 Jun 2010
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 Posted: 13:27 - 09 Jan 2012  Post subject: Indicator Switch MOT/C&U regs |
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Right, scratch building the wiring for my DT; I need an indicator switch.
Switch cluster I have has a 'slot' where one used to be, with a couple of bic biro plugs pushed into it & the label peeled off; to get it through tests without. New cluster would be about £30, but be 'too easy' and spoil my fun. Idea is to salvage the 'old' switch, and as it's wrecked anyway, use it to make a custom cluster. So.
Direction Indicator switch; normally one lever push it left to indicate left, push it right to go right; centre is 'off'.
A centre feed, three position toggle switch, would mimic this nicely, and replace the original with a bit of space to spare. BUT, getting ideas; what about two, illuminated, latching, push to make switches?
Side by side; one for left, one for right. Push once to indicate, again to cancel.
Only 'issue' I can see is that possible to turn on both indies at the same time..... I call that 'Hazard Warning Lamps'.... as pressing one, wont 'cancel' the other.
Not looked at the MOT Test regs or C&U Lighting amd's for a while; but last time I checked was a bit vague about operation of actual switches. Plenty about light colour; tell-tale's, light possition; flash rates & all that.
Any-one got interpretation of whether its permisseable?
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?' |
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| weasley |
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weasley
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Joined: 16 Oct 2010
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| Kickstart |
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Kickstart
The Oracle
Joined: 04 Feb 2002
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| Teflon-Mike |
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Teflon-Mike
tl;dr
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| Posted: 14:53 - 09 Jan 2012 Post subject: |
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| weasley wrote: | Will it actually result in 'hazard' lights if you have both 'on' though? Is the flasher relay actually configured to do that? No idea, but I remember on my old Mini there was one flasher for the indicators and a different one for the hazards. I would assume a flasher unit would have to be capable of running all four bulbs at the right rate to actually work like that...? |
Will be using a 10A Solid-State, two wire, Flasher, as we used on 'The-Pup', with good results.
Four 21w bulbs in each indy = 84w + 4w on the 'tell-tale' = 88w; gives total continiouse draw of 7.5a-ish, so 75% of current capability for the flasher with all four bulbs plus tell tale running conventional tungsten bulbs, and drawing together 
Flash rate is Chrystal timed to fixed flash rate; so putting different 'load' on it wont effect how fast it blinks, like it does with an electro-mech flasher; (probably why the mini had two; one timed for the half load on indy, one timed for the double load of hazards).
Also means that can fit LED bulbs, without balast resistors, and low power draw wont effect flash-rate; and can even mix & match bulb types. So, 'yes' basically; flasher is up to the job, and if I don't run individual push switches for each indy, I'll probably be fitting seperate illuminated latching push switch for hazards, anyway..
| Kickstart wrote: | Can't see why it wouldn't be permissible. Only issue is whether it is treated as 2 switches (which would take a fairly imaginative thought process). |
Some BMW's of the 80's/90's had two indy switches; one on the left for left, one on the right for right... only I presumed there was a 'cancel' mechanism between them.
| Kickstart wrote: | On the other hand there is nothing I can see that renders the mods you already have to destroy the indicator switch to pass an MOT without indicators to be required. |
That's how I got it; it's down to interpretation; 1975 bike doesn't have to have indicators, but at variouse times, MOT guides have changed; and fails issued if not there and bike had them 'as standard' or if there's a switch, there ought to be the device.
Bike was belt and braces prepared for off-road by some-one in the dim & distant past; pillion foot-pegs and grab-strap removed to make it a 'solo-seat'; indies were removed and ALL the wiring stripped out. Head & tail lamps were retained; but with 'simplified' wiring, eliminating the battery; and what was left was carefully hard-jointed with near aero-space standard solder-splices where there would have been bullet connectors; then there is a proliferation of lock-wire; again done by some-one trained to use it. Ie: this was 'considered' modification, for competition or serious off-road work; not usual Field-Bike Bodgery; keeping an MOT fail running! So I guess who ever did it must have had good reason; even if it was he merely had a pedantic MOT Man, or a local plod with a grudge!
I'm refurbishing it as a 'toy'; to pootle about town on, and maybe head down some of the local 'Lanes; but done my 'seriouse' off-roading in comp-trials, so it's just for occassional 'fun'; so I'm slowly putting together the bits to put it back to street-spec.
With Christmas out the way; want to crack on and try and get it in commission for this summer... but it is not being very co-operative at the moment.
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?' |
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| Kickstart |
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Kickstart
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| stinkwheel |
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stinkwheel
Bovine Proctologist
Joined: 12 Jul 2004
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| Posted: 18:32 - 09 Jan 2012 Post subject: |
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What you described there is how some Harleys work as standard. Three switches for left, right and cancel. It's really fucking annoying.
Second only in annoyingness to a C90 which has a three position switch that works front to back (forwards for right, backwards for left).
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Teflon-Mike
tl;dr
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Old Thread Alert!
The last post was made 14 years, 180 days ago. Instead of replying here, would creating a new thread be more useful? |
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I'd forgotten that one; that's what it was on the C50 I fixed up for my lad umpety years ago! Forgotten riding that thing to the MOT station & being utterly vexed by it! 
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