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  1. george_tlc

    Some pics from a trade event

    and a few more...
  2. george_tlc

    Some pics from a trade event

    More...
  3. george_tlc

    Some pics from a trade event

    Older son was at a toyota event for the trade - for companies building after market stuff. Pics are 'cleared' for sharing. He sent some to me, so posting them up for you guys that are hot to trot to buy one. cheers, george.
  4. george_tlc

    Solving parasitic draw

    Not quite right :) A zener has a break down voltage. It will break down (reverse biased) and conduct when you reach that voltage (it's not instant on/off...). Typically there would be a resistor in series to limit current and the voltage across the zener would then limit to the zener voltage...
  5. george_tlc

    Solving parasitic draw

    It's not actually quite like that... The capacitor is used as part of the timing, the transistor (and leaking zener) are what control power to the ring. Read my write up in the link further up and it explains a little about the circuit and the actual failure (the zener). cheers, george.
  6. george_tlc

    Solving parasitic draw

    https://george4wd.taskled.com/ignition_bulb.html Ignition ring... cheers, george.
  7. george_tlc

    What Did You Do with Your 80 This Weekend?

    lifepo4 is a 'safe' chemistry versus li-ion. It will not 'catch fire'. The battery also has a BMS to protect from charging when the battery is too cold or too hot. The battery is operationally safe to 55C. I've never seen 60C in the front/battery area of an 80 - 60C is OUCH temperature to your...
  8. george_tlc

    What Did You Do with Your 80 This Weekend?

    Thanks for your concern, but the lifepo4 will be just fine in the battery case in the front area of the engine bay and so will the charger PETG is fine for this application. Cheers, George.
  9. george_tlc

    What Did You Do with Your 80 This Weekend?

    Well, a bunch of weekends and planning. Re-doing my dual battery setup to use a lifepo4 as the aux and that has entailed a bunch of planning and rethinking my existing solenoid based system (that has/had been working for the past 20+ years). The move to lifepo4 was to better utilize the aux...
  10. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ you have to look closely at say an 80 series (others are similar) and you will find there are NO ground straps to the chassis. It is not part of the ground circuit in any way. The 80 (as the example) has a big ground connection from battery to block and that IS the path that the starter...
  11. george_tlc

    Winch cover, yes or no?

    My home made cover, scrap marine vinyl, sewing machine, bit of time. > 20yrs old and 80 lives outdoors. cheers, george.
  12. george_tlc

    Winch cover, yes or no?

    I've run hand made covers (I'm cheap...) on both my 80 (m12000) and my oz patrol (8274) for a couple of decades. Used some scrap marine grade vinyl material. The 80 lives outside (norcal) and patrol in a garage. The winches look pretty well new when the covers are removed for use. There's...
  13. george_tlc

    Anybody knows about electronic loads?

    I'm sure there's a limit, don't know offhand what it is. Something to verify in the product's documention/spec. Fancier units that gave scpi may have pretty fancy capabilities... cheers, george.
  14. george_tlc

    Anybody knows about electronic loads?

    1 second was just an example. The fastest is 0.1 sec per change :) cheers, george.
  15. george_tlc

    Anybody knows about electronic loads?

    You can program steps in the various modes. Below shows Constant Resistance and changing the resistance values every second. It will log current, voltage, power etc so you can get curves. You can save the data and then pull it into excel for instance and do more with it. I'm sure most...
  16. george_tlc

    Anybody knows about electronic loads?

    I have and use a Manyuo electronic load. It's well proven and there's a few similar units out there. Fairly old school in terms on 'UI', but it works just fine. I've used for a bunch of years. Mostly as an electronic load for LED driver testing and also for smaller battery runtime tests. They...
  17. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ Agreed, misinformation in a thread that people will refer to is not a good thing. Landlocked93 clearly doesn't understand the distinction between a poor ground path and an ENGINEERED one by Toyota etc. He doesent understand how the body mounts to the frame and at what places there's a...
  18. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    Sorry, but no. The frame is not a ground path. It may connect to the ground system via bearings, springs etc, but it is NOT intended to carry current. Again, there is no point where Toyota uses the frame to carry current. Current is carried from the battery to the block for high current and to...
  19. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    Yes, and tailshaft and bearings to axle etc. The point is that ground is via engine and body. Frame/chassis may have indirect grounding, but is not used as a ground path. I've got a pretty good grasp of ground loops - my EE work ensures I understand that along with circuit design and board...
  20. george_tlc

    Renogy 50amp DCDC w/ MPPT - Chassis Ground?

    ^ Yes, manifold/engine/body etc. NOT the frame/chassis. Manifold is 'part' of the engine - it's bolted to it as is the exhaust system. Essentially the entire engine/transmission/transfer box/body are suspended on rubber from the frame/chassis. So, if you want a good ground you need to connect...
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