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    Winsley, Bradford on Avon, Wiltshire
  • Cars Owned
    Spitfire 1500, built 1975

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GrahamB's Achievements


Expert (4/13)



  1. Acting on a previous recommendation, yesterday I bought four Falken 155*13 tyres for £145 fitted with discount from a local dealer. I think they also produce a 145 width. A lot cheaper than the £80 each previously quoted. They were changed as the previous Michelins, although plenty of tread left, were 15 (!) years old. Only feels like a few years ago that I bought them. So as Pete stated, they will age more than they will wear. New tyres date stamped as December 2020.
  2. I repaired a LED inspection lamp by constructing a battery from two, three rechargeable cell packs designed for analogue telephones. Re-soldered the connections and bound them with PVC tape, half the cost of buying a new lamp. I previously to use an AVO meter (AmpsVoltsOhms) that my father "gifted" himself when he left the RAF in 1948. I now use a digital meter but set to the highest range so that it reads a stable 012 volts rather than 12.34 volts which keeps changing. The last two decimal point may be useful in some electronic engineering context but not when checking whether power is getting to a switch.
  3. Interesting that the Haynes wiring diagram does not show a relay but the owners handbook does show a relay. If a relay is present it is near the ignition coil.
  4. I read several years ago that the parameter which correlation with fuel economy was the weight of the car. I remember watching a small female, probably weighing about 50 kg, the sole occupant, manoeuvring a large 4*4 into a parking space, the vehicle weight must have been 2000kg. The thought at the time was that it was not a very efficient mode of transport.
  5. My 1975 Spitfire 1500 has a relay which is live and actuated by pressing the steering wheel centre which earths the relay coil outlet. I have checked the later wiring diagram for the stalk actuated models and they too have the same relay. It is a special (expensive) relay with only three connectors but you can use a standard four pin device by connecting the two power in connectors together. When the relay is actuated, 12 volts is fed to the two horns which have earth connections to the chassis.
  6. I tackled this task several years ago. The foam had disintegrated but the black vinyl covers were still good so just replaced the foam. I cannot remember any details except it was relatively easy. I secured the covers with black plastic cable ties rather than hog rings as much easier and adjustable but not as neat if you remove the cushions and inspect the underside. Perfectly acceptable when fitted the correct way up in the car.
  7. GrahamB

    Flat EV

    "Powered by a next generation 50kWh lithium-ion battery, Corsa-e can take you up to 209 miles (WLTP)1 on a single charge." Quote from the Vauxhall website. 900 Wh from a solar roof is less than 2% or an extra 4 miles. May not be worth the financial outlay?
  8. I gave up with mine and just fitted a splitpin long enough to bend the end over but short enough not to show. Works fine.
  9. GrahamB

    Flat EV

    According to the Camping and Caravanning Club, all except a rather expensive Jaguar SUV were not approved for towing and even the Jaguar was only for a light weight device. I read that some months ago and at the present rate new models are being introduced, this may no longer be correct.
  10. GrahamB

    Flat EV

    The use of average mileage is very misleading. Now I am retired, my mean journey is about 20 miles, EV no problem. But once every two months, (to resume after restrictions are lifted), we visit my daughter in Mitcham, Surrey, or son in Otley, Yorkshire. This involves return journeys of 250 or 480 miles. Both live in terraced houses with on street parking. As mentioned earlier, you park where you can, not necessarily close to the house. In Mitcham there are three charging points at the end of the road but these are for three roads each with addresses over 70, so about 200 houses. We could spend a couple of hundred pounds and many hours on public transport but each visit is usually accompanied by a request along the lines of "Dad, can you bring your sledge hammer, a spade and your toolbox as we need..." I would quite like an electric vehicle, in my youth I drove an electric milk float but not just yet; the early EV technology is already obsolete. If I buy a new petrol car in five years time a keep it for 15 years, I will be 90 so probably it will no longer be a problem.
  11. I have only removed an overdrive gearbox from a Spitfire, single rail and J type. I had to completely remove the propshaft to get enough clearance to disconnect the input shaft from the clutch. Yes, it is very heavy! I would also recommend cutting the heads of a couple of bolts as suggested by Clive to aid refitting.
  12. I was told that carb cleaner leaves a fine film of oil to protect the metal. Brake cleaner is just degreaser, a film of oil to stop the discs tarnishing is not a good idea!
  13. I am surprised that you could not find an imperial spanner to fit. 7/6" = 11.1 mm. 0.1 mm= 0.004". Perhaps with all the usage your 7/16 spanner has opened up slightly. Or has it been stolen by the crows !
  14. If the coil is too hot to to touch, this is indicative of a coil with a low resistance. If it is 1.5 ohms it must be connected to the ignition switch via the white/pink resistance wire so that it only receives 6 volts during normal running. Has this wire been bypassed to obtain 12 volts for the electronic ignition? If so, then you need a 3 ohm coil. Alternatively, has the feed from the starter solenoid been misconnected so that it supplies 12 volts continuously rather than only when the starter motor is actuated? As for the coil, the extra 0.7 ohms may just be due to the resistance of the test leads. If it is 2.2 ohms it will pass less current and run cooler, and for the same inductance, provide less energy to the ignition system. But the extra resistance could be due to more turns on the primary giving a higher inductance and more energy but at the expense of a longer rise time. After saying all that, I think that the replacement coil will work fine provided it is only being supplied with 6 volts via the resistance wire.
  15. I was told that the manufacturer decided to develop a water dispersant. The first formulation was not upto expectation so they re-formulated and made a second batch. This continued until they were finally satisfied with the formula for the dispersant, on the 40th variation. It was then marketed as WD40. So WD1 to WD39 never went into production.
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