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About Edge

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    Obsessed Member
  • Birthday 09/05/1970

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    Leamington Spa

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  1. Hi Dave Not a build review exactly, but Mike Grant built a Beaver for the Airfix Build & Convert series - book 2. He has some interesting tips in there about the build & adding some extra detail. If you're interested there's also a good book called 'Think Like A Bird' by Alex Kimbell which features the AAC Beaver quite heavily. I found it a great read. Edge
  2. Edge

    Diesel cars

    Hi Dave To answer your question I'd have to say 'it depends'. On Toyota & Lexus, the electrical part of the hybrid system assists the petrol so you do have plenty of grunt from stationary because of the torque from the electric motor(s). In normal use the petrol engine provides most of the motive power, with some help from the electrical part. Below approx 32 mph it's possible to drive in electric only mode, using the energy stored in the HV battery. The HV battery is re-charged by the motor generator unit (MGU) when braking or coasting. All of this is controlled by the car's ECUs so they are very similar to drive as any car fitted with an auto gearbox to drive. From memory the BMW i3 uses the 'stationary engine' principal with a (motorbike) engine used to charge the battery which then provides all the motive force. Of course it's possible to use the stored energy in the battery faster than it can be replenished! You're point about the stop/start driving pattern being wasteful is, in my opinion, absolutely on the ball. All engines are most efficient when warm & operating within a relatively small rev range. The gradual proliferation of 'traffic calming' measures in many urban areas, whilst having admirable aims, also has led to an increase in pollution because all vehicles now have a series of braking & accelerating cycles on a single road. So instead of a moderately efficient cruise at, say 20mph, past the local junior school, we are forced to slow for the speed hump or road obstruction then accelerate, brake for the next etc. Edge
  3. Edge

    Diesel cars

    Hydrogen is split to generate electricity which powers a motor
  4. Edge

    Diesel cars

    Hi Bentwaters. Interested in your comment about replacements. I assume you mean the High Voltage batteries? If so we sell so few replacements that I honestly can't remember the last one. We also run a check on every Hybrid service which gives the owner additional warranty cover on Hybrid components - up to 100k miles or 10 years. Edge
  5. Edge

    Parrabellum Models

    Well remembered Mike! Another great little shop.
  6. Edge

    Parrabellum Models

    It's a proper Aladdin's cave in there and as Alfisti says take plenty of cash! If you're driving take some change for the parking meters too. Edge
  7. Edge

    Diesel cars

    Having read a lot of posts on this thread I think a lot of us are confusing fuel economy with emissions regulations. Although inextricably linked, a car with excellent MPG may still be a high polluter due to the soot particles (the bits the governments are trying to reduce) it produces. I work for a large, global car manufacturer and have a tiny insight into product planning and I think the best description for our European strategy is to increase our Hybrid sales whilst reducing diesel, which is already happening due to retail customers making the choice for themselves. That said there will always be a place for other fuel types such as diesel, hydrogen (fabulous technology and great to drive) as well as turbocharged small capacity petrol. Developing this technology is hugely expensive and as is the case with all businesses, we follow where legislation pushes us. For example there is a regulation that means from late this year (I believe) all new models must have an emergency alert function. This is to automatically alert the emergency services in the event of an accident. My point here is that we have to place our bets on the future strategy most likely to appeal to a market very different to the one we grew up with and which not all existing drivers find attractive. My current preference is Hybrid. Why? With a large capacity HV battery driving an electric motor, acceleration from a standing start is phenomenal (remember an electric motor develops lots of torque across the Rev range). There's no range anxiety that full electric vehicles have as the petrol engine is there, still doing a lot of the work, aided by that electric motor. And with relatively careful driving can deliver good MPG with less emissions anxiety. My wife's C-HR is a 1.8 litre Hybrid & she's currently on 57mpg - not bad I don't think. Ultimately there's a huge choice out there & what's right for one won't necessarily be ok for others, but rest assured the industry is a changing and very quickly indeed! Edge
  8. Edge

    Diesel cars

    As Max Headroom says, modern diesel engines with DPF need regular high speed, high engine temp runs to allow the system to regenerate. Essentially the particulates from the exhaust gasses are captured within the filter (DPF) which, being a filter, clogs and reduces in efficiency. The engine ECU calculates how full the filter is by various methods, but ususlly by measuring exhaust gas pressure and temperature before & after the catalyst. When the threshold is reached some vehicles show a warning to the driver that action needs to be taken, some vehicles don't... To clean the filter, an amount of fuel is burnt in the exhaust system at high temperature to reduce the size of the soot particles and allow them to pass through the filter into the exhaust stsyem proper. If the regen is succesful, the filter is almost entirely clean and ready to do it's job again. If the regen either doesn't happen, or worst still starts & doesn't finish, the fuel injected in order to burn the soot particles can combine with the soot & create a thick, tar-like substance leading to further blockage. The ECU will continue to try to trigger the regen process, so the optimal drive patter has to be used to succesfully complete the process. For the majority of drivers this is not a real problem, in my experience it is those who make many short journeys, or the occasional journey where the regen process starts then is stopped because one of the paramaters required to complete the regen (usually road speed in the data I see) is lost. These enfines also need high quality, usually low-ash oil to operate correctly. This is expensive but reduces the soot build-up and the frequency of regenerations required. Edge
  9. Just a little way from my front door! I'll add it to my 'must visit' list! Edge
  10. Edge

    1/72 Harrier GR5

    Thanks for the heads up Rob. Perhaps green GR5 isn't so far away after all! Thanks Serge. Looks like Airfix is the better option, perhaps with some improved exhaust nozzles and the panel lines reduced somewhat. Edge
  11. Edge

    1/72 Harrier GR5

    Thanks Dave. I think I'll give that a go. Plenty ok Airfix GR.7/9 kits around. Edge
  12. Edge

    1/72 Harrier GR5

    Thanks Serge I'm aware of the Hasegawa kit but they are non existent these days so was looking at alternatives. You are correct that markings could be a bit of a problem, but one bridge at a time! Edge
  13. Edge

    1/72 Harrier GR5

    I'm thinking of adding a Harrier GR5 to the ever growing pile in the loft and was wondering which is the better option, Airfix kit or Hasegawa AV8-B with a Quickboost nose? I'd also like a 1/48 version of the same but have given up hope of ever seeing a re-release of the Hasegawa kit! Edge
  14. Edge

    Hannants Lowestoft

    That's exactly how I felt Stew! I'd have needed a lorry to move all the kits I took a fancy to! Edge