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RobH

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About RobH

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  • Location
    Newbury, Berkshire
  • Cars Owned:
    TR3A
    MG M type
    ex-TR7
    ex- AH Sprite
    ex- Saab 900turbo
    ex- an assortment of 'grey porridge'

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  1. Polarity of supply is unimportant David. This probably isn't the exact model but it might help: http://www.vintagemg.com/articlepdfs/thorns1-2.pdf
  2. Ah Hamish - sounds as though you need one of them newfangled wi-fi earths https://www.wireless-earth.com/collections/vendors?q=Wireless Earth Online Shop ...............either that or tyres with metal spikes. (Before anyone is gullible enough to take the link as actual science - -really it isn't. )
  3. According to Wikipedia: The H1 was the first halogen lamp approved for automotive use. It was introduced in 1962 by a group of European bulb and headlamp manufacturers. The bulb was not approved for use in the US until 1997.
  4. The requirements for car bulbs are here: https://unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/R037r7e.pdf The specification for the H-prefix bulbs does not dictate the fill gas but it does dictate the wattage and light output. While it may be possible to achieve the latter without a halogen fill, the bulb life would be very short.
  5. The words were obviously written by someone who thinks that all incandescent headlight bulbs are halogen. Don't forget that non-halogen bulbs pre-date even sealed beam headlamps and so are really ancient history. Whether the testers recognise the distinction in the words depends to be seen. I would guess they probably won't.
  6. You need to clean a file occasionally anyway when doing fine work Rich, because the filings get caught in the teeth and can mark the surface preventing you from getting a good finish. File-card is used to clean them https://www.proopsbrothers.com/wire-brush-file-card-cleaner-ideal-for--jewellery-modelling-engineering-and-woodworking-m0617-1646-p.asp but a wire brush will work - used across the file along the grooves of the teeth. If you are doing fine small work like clock parts you will probably need a set of needle-files like this: https://www.rdgtools.co.uk/acatalog/10PC-NEEDLE-FI
  7. Well there's not a word about it on the BBC news website this evening (no surprise there then). Their lead story on parliament is about an MP who sounded like a dalek on a zoom meeting...... Priorities anyone?
  8. The tail lights take 10W total which is just over half an amp so unless the wiring is very poor there would be no noticeable improvement Keith. The brake lights take 42W which is 3.5 amps so you might see some minor improvement but really not worth the effort compared to LED bulbs.
  9. May is good. Not too many other visitors and the midges haven't really woken up.
  10. Sorry for not being more specific in my post above. 'Rheostat' is a rather old-fashioned term, usually describing a large wire-wound variable resistor connected in series with a load. Wire-wound resistors are used where the current is high, as it is with standard light bulbs in this application, because it will get rather hot and a less robust type of resistor would burn out. The point is that the standard dimmer rheostat can only drop enough voltage to affect the bulb brightness if the current is relatively high. (voltage dropped = resistance times current) LEDs draw very
  11. S Sounds the typical thing - once the tourist boards start to advertise something, it gets ruined by crowds. I drove that route a couple of times in the late '70s and early '80s when there was virtually no other traffic, and it was marvellous. There was a ferry at Kylesku then, not a bridge.
  12. In a word - no. The resistance of the standard rheostat is much too low for that so the led bulbs will be on max brightness all the time. You would need to replace it with a much higher resistance potentiometer if you want to vary the brightness.
  13. If he has disturbed the connections on the ignition switch it is most likely due to that as Bob says. I don't think crossing anything to do with the charging circuit under the bonnet will not cause this, at least with standard wiring arrangement for a Lucas alternator. We need rather more detail to be able to help - what exactly has the chap been doing and is the wiring standard?
  14. Absolutely Paul. I once lived in a flat which had underfloor electric heating. Unless there were long spells of settled weather it was pretty useless - always at least a day behind what was actually needed. Either you were shivering waiting for it to heat up or the windows were wide open trying to cool things down.
  15. Most likely. Don't forget that petrol engines produce water as a by-product of combustion John. The engine needs to be run for some considerable time at full temperature to evaporate off the water that accumulates during the warm-up process.
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