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PCM



Member Since: 25 Jan 2019
Location: North East
Posts: 874

United Kingdom 
Thanks for the info:

Power steering pump comes with the kit.
Hella do a Vacuum pump for the brakes. Will do a bit of research and see how much fettling is needed.

https://www.hella.com/microsite-electronic...ps-43.html



I'm not sure on the DC-DC converter as this will be sourced once the battery is confirmed. But these are readily avialable.

I'm stumped on the speedo being controlled by the ECU. I thought it was just a speed sensor. See below: Anyone know what year model they changed them?


Click image to enlarge


Once the 12v system is powered up. what other bits will need tweaking?
Ignition definitely...


BIG question.... Motor into clutch makes it manual. Will down tune the motor to run at a max of 4000rpm. (Easy according to supplier) Keeps the interior the same.

However if you bypass the clutch completely and use a reduction drive it becomes automatic. Probably the feel of a "real" electric conversion. Motor will then be able to run at max RPM but the drive will reduce this to not wreck the transfer box. possibly need a different electric motor with a bit more grunt. Hmmm.... Will also have to alter the interior a bit but not much.
Post #952563 15th May 2022 6:57am
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mikeh501



Member Since: 07 Jan 2013
Location: United Kingdom
Posts: 1142

United Kingdom 
You can get a gps speedo which looks fairly Oem. Greeni has one. Not cheap but totally self contained.
Post #952571 15th May 2022 8:28am
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2639

Scotland 
The Td5 speedo is not ECU controlled. It’s the same part (made by VDO) from 1999 to 2006.
Post #952573 15th May 2022 8:40am
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mikeh501



Member Since: 07 Jan 2013
Location: United Kingdom
Posts: 1142

United Kingdom 
Does the transfer box transducer go straight into the speedo then?
Post #952576 15th May 2022 9:03am
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PCM



Member Since: 25 Jan 2019
Location: North East
Posts: 874

United Kingdom 
Thanks Retroanaconda
That's what I thought. Good to clarify though.
And thanks for your drawing. Smile

Don't like the idea of a GPS speedo. it may work but can't see the need. Very Happy
Post #952579 15th May 2022 9:31am
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
Sorry I thought the speedo was ECU controlled but still you cab use the older version with the cable.

If you can do it without the gearbox I would prefer that. Probably less noise too. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #952634 15th May 2022 7:41pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2639

Scotland 
mikeh501 wrote:
Does the transfer box transducer go straight into the speedo then?


Yes.

You could use the older type of speedo but the Td5 one is far superior.
Post #952635 15th May 2022 7:43pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17359

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It's the TD5 Disco2 which has the speedo under ECU control, it's derived from the ABS wheel-speed transducers.
Post #952639 15th May 2022 8:27pm
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PCM



Member Since: 25 Jan 2019
Location: North East
Posts: 874

United Kingdom 
Blackwolf
As one of the more knowledgeable contributors anything to add on the above potential issues?
What should I expect to just work and what will need a lot of playing? Bow down
Post #952642 15th May 2022 8:40pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17359

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
You're starting with a Defender, so expect nothing to work!

I don't think you're the first to do this, I am sure I have read of an electric conversion with a Tesla motor connected directly to the transfer box and batteries everywhere. I don't see any reason why it couldn't be done. Once you remove the engine and its supporting electrical system from the vehicle the remainder of the 12 Volt system is very rudimentary.

It would be simpler to start with a vehicle without a/c and without ABS, although I see no reason why both shouldn't also be made to work with an EV conversion.

I suspect however that this conversion, if done to a decent standard, will be a lot more expensive than you expect. It will suck up many, many hours in labour, and if you are paying for that labour it will really mount up. If your engineering skills are up to it, DIY would be much cheaper.
Post #952648 15th May 2022 10:21pm
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Ramsay



Member Since: 30 Sep 2015
Location: Moffat, Dumfries & Galloway
Posts: 627

Scotland 1995 Defender 110 300 Tdi CSW Auto Keswick Green
Did you find these guys on your search for companies https://www.electrogenic.co.uk/cars/land-r...icultural#

I like their approach in not going for all out performance but enough grunt to get you around off road.

I am interested in how you get on as I am looking at a conversion. As the ranges are short I think converting my Lightweight might make more sense than the TDi. Again it would then do all my short journey work for firewood or ranger work on solar electric. 1995 Defender 110 CSW
1971 SIIA Lightweight
Post #952800 17th May 2022 7:13pm
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PCM



Member Since: 25 Jan 2019
Location: North East
Posts: 874

United Kingdom 
Hi Ramsey
Yes. Their HV solution seems to be quite appealing. However i stopped after receiving the availability and price.
I also quite like the idea of working out all the bits of the puzzle too.
Post #952890 18th May 2022 5:40pm
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LiftedDisco



Member Since: 17 Aug 2014
Location: Towcester
Posts: 352

 
I’ll watch this with interest…

I take it you’ve come across Vintage Voltage in Wales… I think they have done a number of Land Rovers and am pretty sure that they mate the motor direct to the transfer box. I also have a feeling they needed to run the motor backwards due to their placement of it…

I think the direct to transfer box is the way to go - full torque right through the range with no gears to worry about and therefore no additional point of weakness, plus the weight saving of ditching the gearbox.

I know the FD at Electrogenic and their route is to retain the gearbox - apparently this is more to do with keeping original stuff in the vehicle in case owners want to revert to ICE at a later date rather than optimising the EV element.

In terms of base vehicle, I’d echo the comments above - keep it as simple as possible. Note, losing the gearbox would eliminate your speed sender, so you might end up with a GPS speedo.

The other useful resource for bits along the way might be Car Builder Solutions!

Good luck, keep us informed…
Post #952891 18th May 2022 5:56pm
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katana069



Member Since: 28 Mar 2022
Location: Northern Ireland
Posts: 44

United Kingdom 
Post #952924 18th May 2022 10:23pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17359

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
LiftedDisco wrote:
Note, losing the gearbox would eliminate your speed sender, so you might end up with a GPS speedo.


No, it's on the back of the transfer box so won't be affected by the removal of the gearbox.
Post #952927 18th May 2022 10:44pm
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