Electric Power Steering? SE6

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Electric Power Steering? SE6

Post by spegru » Sun Jan 14, 2018 9:08 pm

Some research needed I can see....



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Electric Power Steering? SE6

Post by philhoward » Sun Jan 14, 2018 9:18 pm

I have a feeling that some of our Continental owners have done a modification to use (I think) an adapted rack off a late Escort? I’m sure there’s something out there that could be made to work but whether it would be better is another matter.

There certainly isn’t anything that is (or very close to) plug-and-play.


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Electric Power Steering? SE6

Post by scimitargtc » Mon Jan 15, 2018 6:53 pm

my reply yesterday seems to have disappeared. in essence i was suggesting a mk2 fiat punto - motor / matching ecu al on the column and cheap, if the geometry worked out


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Electric Power Steering? SE6

Post by spegru » Fri Feb 16, 2018 1:12 pm

I just did a quick search around the garage for a possible alternative rack.
The key points are I think that a) that the pinion must be 'under' unless you get an LHD alternative, since the rack is in front of the wheels b) the pinion needs to be at an angle c) the width between the ball joints (not the track rod ends) must be same/similar to the Austin 1800 derived item in order to avoid altering steering geometry and risking bump steer.

I have several Escort Mk1/2 items but those are too narrow. A pity since quick racks for those are very common.
However I also have a Sierra item that might fit the bill. Looks to be about 72cm between the ball joints which is about right, with an 'under' pinion that is at an angle. Alot more common than the original.
Although quick rack kits are more expensive than I hoped @ ~£200 I imagine that even the standard rack is quicker than the leisurely 4.5 standard manual item. (Ford Power racks for this are also about 200 on ebay btw)

Worthy of further investigation I think - with additional questions around precise pinion angle to avoid chassis, and of course trackrods/ends to join up with the steering arms

I don't suppose anyone has tried this? I reckon a 2.8 turn epas system might be a nice alternative



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Electric Power Steering? SE6

Post by gtcse8 » Fri Feb 16, 2018 1:59 pm

THE SCIMITAR SE6 ONWARDS IS NOT AUSTIN 1800, THE SE5A IS A LHD UNIT MOUNTED UPSIDE DOWN.

The SE6 onwards is an Austin/BL rack which was fitted to a few models.

" I reckon a 2.8 turn epas system might be a nice alternative," this would ONLY work if you found a rack with 2.8 turns THAT fit the Scimitar, in which case you probably wouldn't then need EPAS.


See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Electric Power Steering? SE6

Post by spegru » Fri Feb 16, 2018 3:12 pm

Yes LHD Austin 1800 I had forgotten that - but I didnt know SE5 & 6 were different.
Unfortunately those old Austins are probably rarer than Scimitars now, let alone with LHD quick racks

As I mentioned Ford Sierra looks promising on SE6 so I will investigate further



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Electric Power Steering? SE6

Post by gtcse8 » Fri Feb 16, 2018 4:59 pm

I do the rebuilds for the AOC club as the1800/2200 body is the same as SE5/a, the internals are slightly different and the ratio`s are too.


See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Electric Power Steering? SE6

Post by spegru » Fri Feb 16, 2018 6:39 pm

Thanks. Do you know what the ratio of the original SE6 PAS rack is? Or indeed where to get one?
Incidentally my latest investigation reveals that you can also get an Electric pump for a hydraulic rack at very low prices (later Ford Focus among others) which may well be a heck of alot easier than cutting up the column to use a Corsa/MGF/Fiat electric mechanical motor - just as long as you can get a suitable Hydraulic rack to use it with. Electric control also means variable assistance.
I may buy a couple of sample bits to try, as even if they don't fit the Scimitar I have another possible use



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Electric Power Steering? SE6

Post by *JP* » Fri Feb 16, 2018 7:41 pm

The SE6 on power rack is only about two and a half turns (although the lock is poor) and was always to me a very satisfactory "quick" rack.
There must be quite a few conversion kits of used parts (rack and pipe work,pump and different trunnions,etc.) from previously broken cars,if you put a wanted ad on here.
The rack will need a rebuild probably due to leaks but that is where our friend above from Yorkshire comes in.
(I always thought this PAS set up derived from the Rover SD1??)



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Electric Power Steering? SE6

Post by gtcse8 » Fri Feb 16, 2018 9:22 pm

History Lesson # 1 was widely published in Slice a few years ago.
PAS rack is an extended version of a Burman rack that Rover had manufactured for the very first SD1`s, pipes and body are very different to the Reliant version.
A friend of mine from Way up North is fitting a scorpio engine and has fitted an electric pump for his rebuilt rack, it is now working perfectly at only Half the published pressure.
Last edited by gtcse8 on Sat Feb 17, 2018 12:47 am, edited 1 time in total.


See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Electric Power Steering? SE6

Post by derekoss » Fri Feb 16, 2018 11:14 pm

Do you happen to know which electric pump ? Is it switched in any way do you know. i.e. drop out over certain speeds.

Thanks, Derek



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Electric Power Steering? SE6

Post by Datsundrew » Fri Feb 16, 2018 11:37 pm

I recently broke up a ssanyong Musso mk1, and when I looked at the rack and compared it to my se6, it was similar in that the angle is similar, and the length between the ball joints too. It’s far more bulky being a 4x4, but with mounts and rods modifications it could fit. It’s a very sturdy unit and in a scimitar it’d be having a holiday not having to steer 2 tonnes. I plan to have a play later this year.



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Electric Power Steering? SE6

Post by gtcse8 » Sat Feb 17, 2018 12:40 am

Derek
I will ask Alex for his details, he lives at St Combs and he has just joined the RSSOC and I believe he contacted me because he heard about my rebuilds on scimweb.
Really nice chap, and very technically savvy.


See the Beast on youtube under" RELIANT SCIMITAR CONVERSION LOL.,Se5,Se5a, Se6a, Two Se6b`s, GTC, SST 1800Ti & not a lot of sense

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Electric Power Steering? SE6

Post by spegru » Sat Feb 17, 2018 11:55 am

I don't suppose you guys follow Project Binky?
https://www.youtube.com/watch?v=7hCPODjJO7s&t=60s
In the latest episode they have just started to use Toyota hydraulic rack with a Mercedes A class Electric pump. I'll definitely be watching the next episode



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Electric Power Steering? SE6

Post by spegru » Sat Feb 17, 2018 12:39 pm

I just remeasured the Sierra rack and unfortunately I misread it by 10cm so probably no good @72cm between ball joints vs the Scimitar 82cm.



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