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Thread: Goingbush's Electric Vehicle project

  1. #171
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    This conversion is Rad!

    Well done! Very well done indeed!!!

  2. #172
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    I love how it can crawl with only a few RPM .
    Last edited by goingbush; 25th April 2019 at 07:50 AM. Reason: updated video source

  3. #173
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    and a few more RPM. (video)


  4. #174
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    When I converted to Electric I did as few alterations as possible to allow for this rather rare LandRover to put back to original if the need arose, or if I was unhappy with the EV conversion. Well that is never going to happen, as an EV the vehicle is so much better in every respect, I'd have to be nuts to put the Internal Combustion engine back, I'll be moving the engine onto another Lightweight owner as there are a few I know on the lookout for one.

    So having made the decision to keep it as an Electric Vehicle I decided to beef up the back end so that I can realise the full potential of the torque & regenerative braking.

    For the six months since I've had it converted Ive avoided using 1st & 2nd & had the regen braking levels reduced in software for fear of breaking the rare Lightweight half shafts . (10spline inner / 24 spline outer & flat end caps)

    I put a 24 spline TrueTrac inside a D2 housing & used Ashcroft 4.75 gears with Ashcroft CrMo 24 spline series half shafts. Now No fear of breaking anything . Those gears are very substantial ,

    pic shows 4.75 compared to the 3.54 set that came out of the D2 diff .




    The pinion only has 8 teeth rather than 13 (3.54) or 10 (4.7) but they are more of a spiral & have a lot more contact area per tooth.




    The old diff did not have excessive backlash & no visible issues (only 85.000 miles) but the vehicle had quite an overrun vibration before, I assumed was the layshaft bearing , its completely silent now , woo hoo , no need for a gearbox rebuild .

    The bottom line is now I have no fear using 1st (totally not necessary ) and find myself taking off in 2nd gear now to enjoy brisk acceleration & a very cool EV wind up noise as it accelerates through to 7000RPM (= 80kmh doesn't take long).

    The absolute bonus is now I've screwed the Regen braking up to 100% , the braking on it is now phenomenal , the negative g's are impressive, I have altered the wiring so can have the choice of Regen braking invoked by brake pedal via stop light switch or by a potentiometer on the dash , which is going to be useful for downhill descents .

    Before I had the regeneration maxed at 80 Amps , now its pushing up to 400 Amps back into the battery - ( probably have to back it off in the wet weather)
    Last edited by goingbush; 25th April 2019 at 07:45 AM. Reason: fix broken image links

  5. #175
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    St Helena,Melbourne
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    So when is the real off road test ?
    MY08 TDV6 SE D3- permagrin ooh yeah
    2004 Jayco Freedom tin tent
    1998 Triumph Daytona T595
    1974 VW Kombi bus
    1958 Holden FC special sedan

  6. #176
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    Quote Originally Posted by loanrangie View Post
    So when is the real off road test ?
    Im putting it on a trailer and taking it to Bright soon, theres a few tracks I know of that will be test enough for me to determine if its better at proper Low Range stuff, and it will be really interesting to find out how much the battery recharges on the way back down. Just debating on if I should put a TrueTrac & 4.75 in the front diff first.

    The biggest issue will be holding it stopped whilst on a slope , since the motor is just a freewheeling spindle when its off that cant hold the car in gear , got to rely solely on the handbrake . Theres no provision in the regulations to incorporate a parking pawl or locking dog of any type like in an auto transmission, I'll see what I can come up with.

  7. #177
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    Heres a little test of the regen braking .

    I have a dash mounted switch (Red Knob) to activate what I call Hill Descent mode, this enables descending hills without foot on the brake and the level of regenerative braking is controlled by a dash potentiometer.

    When the red knob is off the regen braking is operated by foot brake , from the brake light circuit. it comes on just before the hydraulics. Again the level of regen can be adjusted by dash pot .

    Not much of a hill but the only one in battery range . The braking from 60 was regenerative only (no foot brake) . On the dirt bit the descent control was on max then i decreased regen level with pot & then maxed it again. Works well , this was 3rd gear high range.

    Obviously all the braking is being done by the rear wheels, might be interesting in the wet , but in 4WD that wont be a problem, the test proves that it works & will be really useful in low range downhill. And it charges the batteries as its working .






  8. #178
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    Is there a need to operate the brake lights when the dash switch is used? RMS tried to introduce brake light activation on headers when braking under motor control but loud protests about the cost to retrofit and that headers only travel slowly anyway caused the abandonment of the idea. However on an EV the situation may well be different.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  9. #179
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    Free Again Thanks Dan
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    Quote Originally Posted by Graeme View Post
    Is there a need to operate the brake lights when the dash switch is used? RMS tried to introduce brake light activation on headers when braking under motor control but loud protests about the cost to retrofit and that headers only travel slowly anyway caused the abandonment of the idea. However on an EV the situation may well be different.
    Good point i did think the same when i watched the vid

  10. #180
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    Feb 2005
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    Bracken Ridge - Brisbane - QLD
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    Quote Originally Posted by Graeme View Post
    Is there a need to operate the brake lights when the dash switch is used? RMS tried to introduce brake light activation on headers when braking under motor control but loud protests about the cost to retrofit and that headers only travel slowly anyway caused the abandonment of the idea. However on an EV the situation may well be different.
    Could be worthwhile as it might catch the following car by surprise.

    I know the transmission braking on the trial bushmasters was very aggressive and from memory on at least civilian two cars ran into the rear and comments from the driver was they didn’t see brake light come on..

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