Chris's new build of an MX5 based car

[CTWV50]

The hardest part was getting this dial gauge in just the right place. I ended up taking the magnetic base off and bolting through one of the diff flange bolt holes.



Once I had set the backlash and checked it at 12,3,6,9 o'clock I set the preload which was a little more difficult as very small turns of the bearing adjusters made a big difference. I then rechecked and repeated process until I was happy and then fixed to ring locks in place. I did a paint test on the teeth and was happy with the patterning. I used new 12.9 strength allen bolts to reattach the case with spring washers.



I've also had made these stainless steel crush tubes for when it gets bolted into the car. The last diff fitted was just bodged in with whatever I had lying around.

[CTWV50]

Having some inspirational thoughts about my possible failures and potential solutions.....

1. Something to do with the handbrake or rear brakes that I can't sort on the day.

Can't fix this as it is not broken. So put this down to paranoia.

2. I have protected well but not grommeted the wiring coming through the bulk head.

Going to cut the scuttle slightly larger around this wire with a dremel and glue fit rubber trim!


3. Front indicators are too far from the widest part of the car.

If this is an issue I will remove the indicators and fit stalk indicators the the side of the indicator pods!


4. They don't like the radius edges of the modified caterham hazard and fog switches when in use.

I measured the hole and the projections and it only needs to be blunt not radiused which they are.


5. They don't like the stick on side repeaters on they aren't bright enough or too low down.

I've ordered some others that should be IVA OK which I will fit on the day if need be.

[CTWV50]

Originally Posted by CTWV50

2. I have protected well but not grommeted the wiring coming through the bulk head.

Going to cut the scuttle slightly larger around this wire with a dremel and glue fit rubber trim!

DoNe!!!

[CTWV50]

Fixed...

[CTWV50]

Apparently you need a side light tell tale. IVA manual mentions a side marker lamp tell tale for long vehicles but I just found this thread and I'm not risking it. I'll reinstate the binnacle illumination on headlight usage later.

http://www.locostbuilders.co.uk/foru...php?tid=146174

[Stot]

You need a tell tale or the instruments to light up with side light, most do. IVA Manual refers to them as Front and Rear Position Lamps in section 22.

The tell tale must operate with the operation of the position lamp switch, it may be the illumination of the instruments or a separate lamp of any colour (providing it is not likely to confuse the driver) clearly identified in either a pictogram (see section 33) or in a word format.

Cheers
Stot

[SeriesLandy]

I did this with my front indicators, mainly to cover the visibility issues.
I didn't have any problems with them being too far inboard.
Iva indicator extension by Series1Landy, on Flickr