Escort Sigma 1600 Race Car

[Roadsport]

Re: Escort Sigma 1600 Race Car

Even though I've hardly ever had any

[RWD fords rule]

Re: Escort Sigma 1600 Race Car

Lol, when is your next event?

[Roadsport]

Re: Escort Sigma 1600 Race Car

Its 11-12.5.2013

[Roadsport]

Re: Escort Sigma 1600 Race Car

Renewing all the roll pins was worth it. The previous fella who assembled the box had some sort of a brain fart and mixed two roll pins. Ending up with too long pin in the shift rail extension and too short in centering spring thingy Well they are now well sorted with new thicker wall roll pins.

Top that with all new gaskets and seals and now I'm ready to do some more damage to it.

I'll need to renew the roll pins annually. And it propably would be wise to renew the circlips holding down the fifth gears. They seem to take some beating. As for now they went back in since they are thicker than regular circlips and I could not find any. I think I need to order in a spare part package.

[Roadsport]

Re: Escort Sigma 1600 Race Car

The SL72 was declared ready but I decided to go back to it. I had a vision the other night and just could not leave it at that.

The original failure in the gearbox was the centering spring retaining circlip jumping off its groove. That lost gears 4 and 3 while downshifting. And the loose bearing balls damaged the fifth gears. In my vision I saw a permanent solution eliminating the possibility of this happening again.

So yesterday evening I took the tail casing off and removed the centering spring device.



A mate next door made me a spacer for the shif rail.

Even I had a go at the mini lathe




The spacer slides onto the shift rail and stops at the 5th gear selector block witch in turn is retaind by two roll pins.




The centering spring re assembled. With no circlip. So the circlip will never let me down again.



So, what do you think a propper cause for a world wide patent eh ?

While the casing is off I'll order new main and lay shaft retaining circlips. They seem to be bespoke bits so I need order them from Tran X.

[Roadsport]

Re: Escort Sigma 1600 Race Car

BTW that blue gunk in the yellow cup below the gearbox is the gear oil of choice. Red Line lightweight Shockproof.

[RWD fords rule]

Re: Escort Sigma 1600 Race Car

Nice work, now your getting creative

[Tristan]

Re: Escort Sigma 1600 Race Car

clever to fit that spacer.

[Roadsport]

Re: Escort Sigma 1600 Race Car

Thanks Tristan and Jason I'm very pleased with the outcome too. One less thing to worry about.

I believe I reached the hearts of the good folk at Quaife with my sad story. They offered to send me a set of main and lay shaft retaining circlips free of charge

Or perhaps they just want to get rid of me. I have been contacting them quite often recently.

[Tristan]

Re: Escort Sigma 1600 Race Car

Or perhaps they just want to get rid of me. I have been contacting them quite often recently.

hahahahaha!

[Roadsport]

Re: Escort Sigma 1600 Race Car

Started work on the rear brakes today.

The nachine shop did a nice job with the flanges and the RST discs. They ground 1mm off both sides of the disc plus 2mm off from the wheel mounting face. Also the flanges were skimmed down to take the discs.

This new set up has few minor benefits over the old one. I have 11mm's more caliper to wheel clearance which has been a real issue so far. I now have a smarter caliper mount resulting in faster and easier removal. Skimming of the discs reduced my rear track by 4mm's and I shed 600g's of wight per disc. Thats a total of 1,2kg off the unsprung weight. The std Escort RS turbo disc weighted in at 5,4 kgs the shaved down ones are 4,6 kg's a pop. The Focus mk1 discs are 5,2 kg's each.







The adapter is alloy and the bracket is 10 mm steell. Has a true home made look about it as it was manufactured with a cut off disc and an angle grinder Still need to grind some more before welding them on.

[Roadsport]

Re: Escort Sigma 1600 Race Car

The brackets did add .3 kg's each so I'm left with an added .600 kg lighter set up than I did last year. Not much but a nice added bonus to all the other minor / secondary improvements.

[Roadsport]

Re: Escort Sigma 1600 Race Car

The aforementioned caliper to wheel clearance has been so close I actually had to grind down the Wilwood text to clear the wheel

[FOSSIE]

Re: Escort Sigma 1600 Race Car

I'm sure we've discussed this before, but do you really need vented discs on the back? Would be worth using some temperature paint to see what the brake temps do in a race, you might find you can use solid discs and then you'd save a chunk more weight...

[Roadsport]

Re: Escort Sigma 1600 Race Car

I'm quite certain I could use solid discs. And I am quite tempted to do so. Only I'd need to buy new calipers and at the moment I'm on a tight budget so that will have to wait for now. Premier motorsport sells some SWEET lightened sierra solid discs that dont even cost a fortune I have me eyes set on pair of those.