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Post by carlyd on May 12, 2020 22:54:37 GMT
it's quite old the chassis now sadly 2012 but deffo did not have vin no. In comparison to the electric regs im hoping this is easy to fix ! I did wind the suspension up and down with the jack and all seemed to move freely both sides but i will peal back the boot and look at the tripods carefully as you suggest before taking it off the axle stands - yes the gearbox mount is the perfect size for the DC-DC converter although quite heavy duty for this component but may help a bit if it gets hot i guess. I was a little surprised by the temperature the controllers got to (45 deg) after 5 minutes of turning with no load so i may need a couple of chiller plates and a small radiator and cooling pump etc i think i guess a small oil cooler will probably be enough looking at the controller spec i think i need to dissipate about 1KW of heat about 10% of the power of the motor. The amount of work you guys are putting into this build is very impressive. I am looking forward to seeing it completed and on the road. Great work guys!
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Post by jacksdad on May 15, 2020 14:36:18 GMT
FIRST DRIVE TODAY YAYYYY !!!!! Big big moment for us it has been 8 years first seats fitted : taped up a few loose cables should be fine for IVA !! and go slowly at first : then a bit quicker it feels quite promising to as we have throttle map at 30% and time for torque to reach maximum when throttle fully pressed at 1.5 seconds (minimum 0.2s) and current limited 50% and reverse (flick of a switch the beauty of AC)
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Post by Stiggy on May 15, 2020 15:30:25 GMT
it's quite old the chassis now sadly 2012 but deffo did not have vin no. In comparison to the electric regs im hoping this is easy to fix ! I did wind the suspension up and down with the jack and all seemed to move freely both sides but i will peal back the boot and look at the tripods carefully as you suggest before taking it off the axle stands - yes the gearbox mount is the perfect size for the DC-DC converter although quite heavy duty for this component but may help a bit if it gets hot i guess. I was a little surprised by the temperature the controllers got to (45 deg) after 5 minutes of turning with no load so i may need a couple of chiller plates and a small radiator and cooling pump etc i think i guess a small oil cooler will probably be enough looking at the controller spec i think i need to dissipate about 1KW of heat about 10% of the power of the motor. it be be a cross current issue if you have one speed pot for 2 controllers.
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Post by jacksdad on May 15, 2020 16:01:44 GMT
The motor is two motors on a single shaft and controllers are master and slave so the throttle pot drives the master controller and the slave just follows - it didn't get really hot just up to 45 degs everyone who has this motor i realise has put chiller plates on the controllers so i think they probably just need them i have downloaded all the paramaters from both controllers during a motor run no errors all seems fine current and voltage as expected
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Post by kiwicanfly on May 15, 2020 21:00:11 GMT
I thought that the first rules for toys was that if the kid gets it out to play with he has to put it away afterwards.
Well done guys.
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Post by carlyd on May 20, 2020 23:38:47 GMT
Exciting times guys, now take it for a blast up the road
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Post by jacksdad on May 21, 2020 19:36:47 GMT
Exciting times guys, now take it for a blast up the road
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Post by jacksdad on May 25, 2020 21:50:21 GMT
Amazingly our house move to devon is back on we were about to exchange just before lockdown and then it was all cancelled. This means i will need to put the car in storage for a few months as im staying in bucks till october and will need to take the batteries out - does anyone have experience of in build insurance ?? would like to get this if possible before moving it. just need to find a rental in devon with a decent garage. in the meantime will try to find time to get motor unit out whilst moving i can strip the motor unit down for final fit.
Does anyone have a view on powder coat vs colour anodising for my aluminium motor unit parts that hold the motor the aluminium has got pretty tarnished and the car has been in the garage the whole time so it needs some protection. The unit is basically a series of flat allloy plates watercut to specific shapes that all bolt together the problem with powder coating is getting all the mated surfaces protected from being coated i guess i could powder coat once built together and protect the bolts - im not sure of the longevity of anodising and as the finish from the watercutting is a bit rough im guessing this will need a lot of tiding up prior to anodizing - any thoughts welcome.
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Post by kiwicanfly on May 26, 2020 5:41:37 GMT
I would go anodised over powder any day. Adds no thickness to the part and does not chip.
However you really need to remove any scratches from the material prior as does not hide them, rather it converts the surface.
Colours are a bit tricky though, some places do colours but often range is limited and colour matching is almost impossible as final result depends on the material composition.
However black is a good safe bet.
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Post by jacksdad on Jun 1, 2020 20:44:57 GMT
I have found a store for the car. This means unlikely to be able to do much major for the next month or so but we have been doing some tidying up the plan is to make just 1 12v electrics box for both the BMS and motor controller electrics and to tidy it up inside to fabricate a PCB with molex connectors for each cable and joining up within the PCB and add a driver circuit for the fuel guage from the SOC output from the bms. Here is the design just sent for fabrication £10 each for 3 boards: Have to take out the batteries this weekend to put into store separately - so this is the last week we can drive it for a while
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Post by jacksdad on Sept 8, 2020 21:43:30 GMT
Finally have new house isolated farmhouse in cornwall with lots of potential workshop space still need to bring car over and install benches and toolrack in one of the barns then will be going full on for IVA - semis retired now so should have more time.
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Post by casesensitive on Sept 28, 2020 9:17:34 GMT
FIRST DRIVE TODAY YAYYYY !!!!! and reverse (flick of a switch the beauty of AC) What I'm hearing here is you can drive 100mph in reverse. I imagine there's a hillclimb/autocross event you could crush with a (car's) ability like that!
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Post by jacksdad on Jan 5, 2021 15:52:27 GMT
lockdown is stuffing me now as i cant pick up the car as planned
garage set all ready with air compressor plumbed in tools and bolts all sorted out neatly all ready
im thinking of quick convert to 48v to avoid electrical safety certification (there is motor exactly the same size as mine with 48 v) it is 30% of the power but i only need 26 batteries rather than 96 so i lose 112Kg but will still be slower - i could add a second motor keeping it still 48v or apply for electrical safety later
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