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    Re: Camp fridge,105ah battery and solar?

    The wattage of a solar panel is not really a useful measure of how the panel will perform for your requirement, and you should be wary of advisors who demonstrate their ignorance on this.

    This is...
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    Re: Conqueror suspension issues

    The factory now offers a fix for this issue which is better than anything I or any other outsider could come up with, so please don't contact me about it.
    Go direct to Conqueror in Heidelberg for...
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    Re: Snorkel vs snorkel

    The dynamic pressure at the mouth of the snorkel at 120Km/H will be 555Pa. (P = V^/2 x k) V = 33M/s k = 1. This is 5,55mBar.

    The pressure drop due to air/surface friction is not significant.
    ...
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    Re: Topargee bluetooth water meter

    This is the flow sensor with 2 Gardena G1 fittings attached. If you can jam to 16mm nipples into your hose you only need a pair of stainless steel clips to secure.



    604767

    604854

    In...
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    Re: Topargee bluetooth water meter

    The sensor is an industry standard FS400A flow sensor which costs between R100 and R200, normally closer to R200 It doesn't go in or on the tank, it goes into the outlet pipe before any branches and...
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    Re: Topargee bluetooth water meter

    Thanks Riaan for those kind words and for contacting me with this interesting suggestion. I hope your hedgehog was comfy all winter:)

    I did some work on this yesterday. I incorporated a flow meter...
  7. Re: Another test that shows why K&N is complete rubbish

    I make a device that displays on a mobile phone screen, air pressure between air filter and turbo as well as between turbo and intake manifold, under actual highway conditions at all speeds and...
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    Re: Tyre pressure in sand

    Reducing tyre pressure has almost nothing to do with size of footprint but everything to do with the profile of the footprint.

    A hard tyre is like rolling a beer bottle across the sand - it pushes...
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    Re: Help Me Inteperate Dyno Results

    Sorry. But torque is just a force. There are 3 components of power in physics force, distance and time. Force is given by torque, distance and time are both available in engine RPM. A five year-old...
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    Re: Help Me Inteperate Dyno Results

    585551

    These are the applicable torque figures for the output power shown. Since the torque should peak at about 2400 RPM and not at 2000 RPM I would not trust these measurements at all.
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    Re: Power output V8 Petrol vs V8 Diesel

    Again lots of muddled thinking about torque/power etc.

    To accelerate a mass it requires the injection of energy (in the form of joules). This energy in the case of a car must be supplied by an...
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    Re: ASPW on intercoolers....

    Makes sense. 760 x 4.71 = 3572Nm. Quite some force in 1st gear.
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    Re: ASPW on intercoolers....

    Nice work with the spreadsheet.

    I see elsewhere that this engine, when they don't flatten the torque curve at 650Nm can actually develope 760Nm.

    So I took your data, unflattened the torque...
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    Re: ASPW on intercoolers....

    Thanks
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    Re: ASPW on intercoolers....

    Interesting to see those numbers. Does that engine have TFSI?
  16. Replies
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    Re: ASPW on intercoolers....

    Thanks Dirk and jelo for reproducing the the pic.

    Because the turbocharger is limited to a boost pressure of 1000mB the output air temperature can never exceed ambient x 1.141K. Assuming the...
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    Re: ASPW on intercoolers....

    Sorry about that Dirk.

    I wanted to refer to it to answer a member's question and failed to find it anywhere. In fact I found the post and it still does not display the screenshot on my browser. ...
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    Re: ASPW on intercoolers....

    Hi Simon. I see a sreenshot I posted earlier to illustrate this point has been removed, presumably by the moderators, for whatever reason. This makes it more difficult to get the point across so...
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    Re: ASPW on intercoolers....

    Aluminium is not chosen for its heat conductive property which, while not as good as copper is still twice as good as steel and more than enough for the purpose. They use aluminium because the...
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    Re: ASPW on intercoolers....

    The first occasion that I opened a Garrett turbocharger happened in Moz where I had a 300Tdi standing that had a problem which I (wrongly) attributed to the turbo, since I'd run out off any other...
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    Re: ASPW on intercoolers....

    You're quite correct, when you stop burning fuel the engine just becomes an air pump. A good example of a positive feedback loop fizzling out. In fact I must apologise, the 200mB I quote is just a...
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    Re: ASPW on intercoolers....

    Somebody told me you lose 50% of your readers every time you present an equation, so I try to avoid them even though it takes a lot of words to replace an equation. The only two you need to look at...
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    Re: ASPW on intercoolers....

    Imagine a straight length of pipe. (Any diameter).

    The right hand end of the pipe is blocked off, in the left hand side there's a piston with its face 1 metre from the blockage. Inside the pipe...
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    Re: ASPW on intercoolers....

    I see I didn't adequately address your question about power.

    Power (watts) is given by force (newtons) over a distance (metres) divide by time (per second).

    To find your engine's power you need...
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    Re: ASPW on intercoolers....

    You're quite right - this gadget isn't permanently installed, just long enough to get a performance profile, usually by a tech in the passenger seat. The saved screenshots mean you don't need to do...
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    Re: ASPW on intercoolers....

    This is quite a useful gadget if you're serious about knowing what goes on in your engine's innards, but it's not really suited to the average home user.

    The top number represents the combined...
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    Re: ASPW on intercoolers....

    That's nice to have but far from necessary for most engines since the turbo only starts to to work at high exhaust gas volumes, which implies substantial forward movement.
    Where I have found the...
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    Re: ASPW on intercoolers....

    I have a device that displays on my cellphone under all driving conditions:

    Ambient air temperature
    Under-bonnet air temperature
    Turbo out air pressure and temperature
    Intercooler out air...
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    Re: 6mm˛ or 10mm˛ for solar extension lead

    A copper conductor of 1sq/mm area presents 0,017 ohms for every metre of its length.

    Doubling the length doubles the resistance. Doubling the area, halves the resistance.

    Your 16 (8 x 2, you...
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    Re: Jurgens Explorer vs Conqueror Commandor

    I own both a 2002 Xplorer and a 2016 Conqueror Companion.

    The Xplorer is reduced to scrap since the roof seam leaked and the wood behind the aluminium skin rotted away. The seams start to leak...
  31. Re: When is a intercooler on a turbo diesel really needed?

    Without an intercooler the turbocharger is almost completely useless.

    Read about it here to save me quoting chapter and verse

    http://www.dactyltech.co.za/intercooler.html
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    Re: I have an idea for a gadget

    Many trucks have a pressure monitoring device on each wheel to warn of deflation while driving. Using this you could have access to all wheels from a central point.

    I already have an automatic...
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    Re: EB-License; Towing weights and fines...

    The gross weight of the trailer may not exceed the empty weight of the car when only overrun brakes are fitted to the trailer. A Land Rover is certified to tow 3500kg trailers but, since the empty...
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    Re: Snorkel - Facing forward or backwards

    As has been correctly pointed out before, a snorkel will never increase your power since the ram effect is negligible (if you want to work it out, find the forward speed in metres per second, square...
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    Conqueror suspension issues

    I have a 2016 Conqureror Companion.

    The very first time off the tar (Henties Bay to Omaruru) the left shockabsorber broke at the top eye and the right shock had its eyes stretched to more than...
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