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Rippthrough

[misc_work] Still Nothing To Do With 205's...

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Rippthrough

Oh and just for more fun we found yet another leaking fuel fitting whilst mapping the engine...so that's got to come back out and down to the hydraulic firm for sorting....what fun.

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Rippthrough

Bit behind on updates again:

Front wing skinned and foam filled in the leading edge for dent resistance, just needs the edges trimming ready for the sideplates fitting then it can be finished off:

FrontWingWrapped2.jpg

I've overshrunk the covering past the ribs slightly - as the final foam fill should re-expand both it and the balsa slightly as it cures - hopefully it should go back almost perfectly flat...but knowing my luck it'll look like a whale in a g-string instead.

New PAS pump:

 

More upgrades today after some testing - and a few teething issues (you know, the normal sheared bolts, oil all over the floor, nearly breaking wrists trying to hold steering wheel against the P/S going nuts) - but I forgot to take pictures, sorry.
The venerable old 106/Saxo pump unit for the power steering system is finally retiring from service, in favour of a more powerful new unit with a solid-state electronic controller.
We now have more fluid flow at full power - which is welcome as with a very short ratio steering rack (a single turn lock-to-lock) the old pump could sometimes lag behind the wheel input in tight corners.
In addition to that it can vary it's speed to hold a target pressure vs loading - so we use a lot less electrical power the rest of the time, including a low speed/low power automatic idle mode when the steering isn't in use such as queueing for a stage start. Might not sound like a big benefit but it's a little more horsepower from the engine due to the lower electrical load, and it eases the strain on the alternator as although we run a large 160amp unit to keep up with the various heavy loads, it still doesn't have much spare when everything is running.
We also have other niceties such as built in fluid filters/air removal chambers and baffled pump inlets to prevent any dirt or air getting sucked into the system whilst bouncing around over the rough.
Anyway, testing today showed everything worked well....eventually anyway...so now we just need to make a new tank for the PAS fluid to suit and perhaps some upgrades to allow a control knob to enable quick switches between various assistance settings (not so much for our car but might be fitting a few to other racers which require more/less pressure).

TL:DR - New P/S pump. Works better than old pump. Is shinier.


And just in case you hadn't had enough of half finished wing pictures yet....another rear element skeleton built up awaiting foam + skinning:

TwinElementRearWingSkeletons1.jpg

Got tempted with carbon fibre for the front wing:

WingTwillSkin.jpg

Did some modelling on the rear wing:

RearWingEnplatesHFDP.jpg

RearWingCleanV2Final.jpg

Mounted the new pump and left the old Saxo/106 one sulking in the background:

NewPASPump.jpg
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Rippthrough

One for old Citroen fans - the new drive system, soon to meet the lathe for some serious weight reduction and some aluminium centres - shouldn't have any issues with any mud/stones that get through the seals either with these!
They also run a lot quieter with less vibration/stress as an extra bonus.

DrySumpNewDrive.jpg

And of course, can't go without more wings.....now they're red. Red cars are fastest, well known fact. You knew it was going to happen:

RearWingRedSkin.jpg

RearWingRedSkin2.jpg

And no, your eyes aren't going, it really is fuzzy - it's the weave from the cloth.

...can't be leaving those pulleys like that can we? Where's the lathe gone...

DrySumpPulleyModified3.jpg

DrySumpPulleyModified.jpg

...a bit of yellow chromate and some of Homer's 'speed holes'

DrySumpPulleyModified4.jpg

DrySumpPulleyModified7.jpg

I reckon that's a winner without going silly on machining time. Best get it made.

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jackherer

Very nice, Andre would approve.

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Rippthrough

Nah, he'd be complaining about using a Renault van gearbox.

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Rippthrough

More odds 'n' sods ticked off the list, this time it was the Magic Box of Ultimate Power!
Has those electrikery pixies inside. Aligns electrons in the wiring. Obviously that means it's worth at least 30bhp.

Fan%20Controller.jpg

Alternatively, might just be a soft starter/fan speed controller to reduce the electrical load spikes when the fans fire up. You're choice. The pixies are more fun.
Also means they can be left on low speed just to dissipate engine bay heat in the pits instead of going flat out SO YOU CAN'T HEAR. CHECK WHAT? THE FANS ARE STILL ON, I CAN'T HEAR YOU! ;)

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Rippthrough

Bare pulleys all machined up, awaiting brazing and plating:

DrySumpPulleyBareMachining.jpg
DrySumpPulleyBareMachining2.jpg

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