My new project

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Re: My new project

Postby Sunbmw » Fri Oct 29, 2010 12:04 am

M3 Compact wrote:
Sunbmw wrote:Sorry boys, didn't make meself all that clear, yep, deffo running a 4HA, going to get one from a Jag breakers in Wrexham on Sunday ( I won't tell you the tale about buying a Scimitar one off ebay only to realise that it is far too narrow when I got it back...................oops, I just did! :oops: :oops: :oops: ) and apparently, Ian Jemison is the man with these axles (already spoken to him and hatched a plan for when funds allow) and I am hoping to build a Floating axle that should be reliable. Keep em peeled..............................


Speak to Mark about 4HAs, Lee. :idea: :arrow:

He has some spare 4.6/5.1 CWPs and made his own alloy hubs for his semi-floating/tapered roller bearing 4HA in the TR8. No axle, shaft or diff failures whatsoever in all his BTRDA events.


Excellent, will do Si....................

In fact, I MUST come up to see you, I have neglected so many of my friends of late, but must make the effort to do the rounds.

I will come see you before xmas mate and we can go have a chinwag with Mark................. :D
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Re: My new project

Postby Sunbmw » Sun Nov 14, 2010 4:15 pm

Been a busy boy.....

Been beavering away for a few weeks, sourced a 4HA axle from a Jaguar breakers in Wrexham, then set about the shell modifications to 4 link and make the turrets for the twin shocker set up I intend to use.

Lots of cutting, fabricating and welding has ensued, but I am only a fraction of the way there yet, as there is extra strengtheners and plating to firstly work out where they will need to go to stop the whole lot just ripping out of the shell, then secondly, make and fit them.

Anyway, some pictures to whet your appetite..............

Bit of technical working out where the turrets need to go.........

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Attack!..........Attack!.........

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Nice big hole...........

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Rolled some turret bodies up out of 2mm steel..........

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Tacked in place..........

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Made the turret top plate from 3mm steel..........

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I have then decided to brace the turrets, and tie them to the base of the cage, this brace will transfer some latteral load to the cage from the struts, and also add some more stiffnesss to the rear of the shell............

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And finally, the damper units I am going to use are Escort Group4 Magnesium items, these are just mock ups for now, just to get an idea of open/closed lengths etc.......

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No longer a BMW Rallyist, but please don't kick me out........ :( :(

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Re: My new project

Postby bruvs1 » Sun Nov 14, 2010 5:16 pm

:shock: you doin baja in this lee? :wink: :lol: very intresting!!
http://www.bruvsmotorworks.co.uk 320is, 330is rallying!
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Re: My new project

Postby hsr2.6 » Sun Nov 14, 2010 7:27 pm

Mark Solloway at historic rallysport uses the twin shocker set up on his Historic European spec mk1's, he took the idea from the paris dakar cars.........
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Re: My new project

Postby ultegra » Sun Nov 14, 2010 7:38 pm

What are you going to do to vector the vertical load path from the turrets to the cage?
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Re: My new project

Postby Sunbmw » Sun Nov 14, 2010 9:45 pm

ultegra wrote:What are you going to do to vector the vertical load path from the turrets to the cage?


Not ideal Chris, but I am going to use a small Gusset to the rear cage leg from the front of the turret, like I say, not the best way, but it should be ample.

I never answered you question from ages ago re- cage tube cutting, well, I have done so many, it becomes a skill that just happens, I seem to have the knack of knowing where to cut, trim and dress up and I more often than not, I am somewhere close. I do have a tube notcher somewhere, but have not needed to use it on this cage.

Comes with being an old cnut I reckon................ :oops: :wink:
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Re: My new project

Postby Sunbmw » Thu Nov 18, 2010 10:51 am

Bit of a result with this axle I bought..................

£150 from a Jaguar breakers in Wrexham, I was going to take both he had, but thought I would just get one for now to offer up and see what was what.

Anyway, I thought I would have a look on t'net this morning, to see what ratio the CWP might be, as I know nothing whatsoever about Mk2 Jags, so, it says, 2.4 cars with Manual or Auto box is a 4.27:1, if the car had an overdrive, it should be 4.55:1 :P ,later 3.2 cars have 3.54 and 3.77 with overdrive.

Well, from the state of the car, I was very sure it would be an early car, and it was an Auto with an overdrive,.................fingers crossed...................Removes the back plate, and there she is, 11/50, which to the unitiated means 11 teeth on the pinion, 50 on the crownwheel, which all adds up to................4.545454545454545454545454545454545, :D :D :D .

Just a damn shame she didn't have a nice plate LSD in there too, never mind.
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Re: My new project

Postby m3heaven » Thu Nov 18, 2010 10:10 pm

Good price on the axle Lee. Nice find.

How much did you manage to save off the original asking price :)
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Re: My new project

Postby Blueberries » Tue May 03, 2011 9:27 am

As for colour scheme, I have always wnted a car in Computervision Livery, and now I have a car that can officially get away with it, so it is cut and dried in my eyes. 8)
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Re: My new project

Postby mrfuzzyfelts » Wed May 04, 2011 9:15 am

WOW missed this thread!

I had an SD1 when i was a kid to blast around the field in.

Cant beat the sound of a V8 8)
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Re: My new project

Postby Sunbmw » Wed May 04, 2011 9:54 am

Hi guys, not been updating on here as much as elsewhere, I will get around to it this week.

In the meantime, check out this link, and scroll all the way down and next page to get an idea as to where I am at the min.....................

http://www.turbosport.co.uk/showthread.php?158925-And-now-for-something-completely-different-Rover-Sd1-Stage-rally-car
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Re: My new project

Postby Sunbmw » Wed May 18, 2011 10:34 am

Hi fellas, a quick update as to where I am, please forgive if the text to the pics makes no sense sometimes, I have copied and pasted a lot of the topic from the SD1 club forum, enjoy.........................

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Four linking the rear...........

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Offered the axle up..........

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Not bad for a lot of guess work!...........

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Not enough room for the axle, so yet more chopping required.....

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Trial fitting a makeshift watts linkage.........

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Filled in.........

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Axle now connected with all the link bars (not bolted or spaced up yet)............

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Twin dampers again, however, I only have two at the minute, so to attach the axle, I have used one each side.........

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Some underside pics, as you can see, next job is to fabricate the watts bars...............

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This pic gives an idea of how I have tied the strengthening plate to the shell............

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Fully floating car!

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Finally, erm...........I was gonna say beauty and the beast, but neither are particularly beautiful at this moment in time!

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I also had been bidding on a "Cheetah" subframe on ebay, basically, it allows the engine to be lowered and moved back, well, I got out bid.......twice in two weeks, so make of that what you will, so, I studied the pics and decided to make my own.

Firstly, remove the middle of the subframe...........

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Chop the middle section down..........

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Weld back in place..........

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Fill the gaps.............

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Done......(well, nearly)

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Note that I haven't re-affixed the original eninge mount brackets (albeit down and back) as I think I am going to chassis mount the engine, and also, I want to dry sump it, so I will leave the engine positioning till I suss that out.

Then just trial fitted the struts to see what kind of castor and camber I might hope for.....

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This weeks project was to fabricate the Watts linkage bars, here's a "How to" guide.............

Firstly, get some appropriate tubing, in this case, 1" CDS...............

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Then get some threaded bosses...........(I cheated and bought these :oops: )

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The bosses were an absolute perfect size, they were about 0.5mm to big, so I just gound a leading edge on them and pressed them into the tube........

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Leaving a little shoulder to weld to............

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Then weld, I have hired a TIG to do this, but it has been a while since I used a TIG, and I was very rusty, so they aren't all that good............ :roll:

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Joints in............

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Watts bars........Done!

Install, and see that my measurements were not that bad!

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Dry sump pan..........

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Engine in place, measured up as to where she needs to be.........

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Chassis brackets tacked in place...........

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Tubes tacked to the original mountings, which I have modified and cut down.........

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Tried the heads and covers on to check for clutch cylider clearance, by the way, this has moved the engine back 3 inches, and down 2 inches............

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Then take her all out and weld em up properly!

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A bit of a gap to fill on this un............

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This one was better though.........

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Chassis mounts..........Done!

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So, after breaakfast :lol: I did the pedal box...............

Bias adjuster on original pedal...........

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Plate for cylinders on pedal box, to match the one I had already done in the shell ages ago..........

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So then, the shell is just about ready now, few little jobs but for all intents and purpose, ready to dip and paint.

I am Soooooooooooo glad that I went on to "Evo 2" with the shell, I would have been dissapointed with myself had I left it as it was when I first painted it with the standard axle etc.
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No longer a BMW Rallyist, but please don't kick me out........ :( :(

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Re: My new project

Postby Sunbmw » Wed May 18, 2011 10:44 am

Also, the very final bit to the shell, the strut tops, strengthening plate welded on and elongated holes for some extra camber adjustment..............

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Ran out of grey primer, so satin black had to suffice........

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Meanwhile, back at the ranch, I had been thinking about the exhaust, and having looked after a TVR for a fella a few years ago, it got me thinking about how the manifold arrangement is on a Griffith/Chimera, so I went and bought a pait of "Headers" for a trail fit, results later this week.............

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For those not familiar with the TVR set up, the manifolds come forward to a "Y" piece, then down the frront of the enginne and back under the subframe.
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No longer a BMW Rallyist, but please don't kick me out........ :( :(

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Re: My new project

Postby mrfuzzyfelts » Wed May 18, 2011 2:29 pm

FAIR PLAY

Your a skilled bloke! 8) :shock:
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Re: My new project

Postby Tris-m3 » Wed May 18, 2011 3:32 pm

Good work, i enjoy reading your updates on this!
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