My first build: Kobra

[clinkadink]

I damaged one of the 32 pin sockets in the process, but managed to solder directly on to the track - so no real damage done. Locked in place with hot glue.

[clinkadink]

I have received 2 old Smiths speedometers, bought as 'parts' off ebay. I plan to use one for the speedo, and one for the tacho.

I stripped one down and fitted the BMW Z3 workings inside. I then cut the Z3 gauge surround, and mounted it around the face of the Smiths gauge. It came with 2 analogue odometers; trip distance and total mileage. These had to be removed in order to fit the Z3 stepper motor in flush, so I cut them down, removed the number wheels, trimmed them and fixed them in place.

This is the speedo, now ready to fit.

[DaveP]

Just reading through this again Chris.

Stupid question of the evening is :

On the side of the fabricated frame how do you do up the nuts / bolts ?

There looks to be quite a lot of overlap with the runners.

Dave

[clinkadink]

Hi Dave,

I could access via the top (with a little difficulty) or through the end of the bar with a spanner.



To be honest, I am considering changing the design, to make them lower, and to make it easier to fit. Intead of using rectangular bar for the top and bottom horizontals, I would use flat bar. Something like this ...

[molleur]

Brilliant! I'll make mine is this fashion, thanks.

[clinkadink]

For anyone interested in the custom rollover hoops, I have included the dimensions I used below.

I had them made by Tom Wood, at Tube Bender.

Website: https://tube-bender.co.uk/
Email: tom@tube-bender.co.uk

Spec: 38.1mm OD x 2mm Wall x Stainless Steel x 240mm centres
Cost: £87.50 + £15 Delivery + VAT, about £120 delivered.




They are smaller overall radius, but the stainless steel is considerably thicker than stock and ebay aftermarket ones.



Here is one fitted through the 'washboard' style parcel shelf.

[molleur]

Many thanks

Jack

[DaveP]

Chris

Thanks again. The flat bar for the seat brackets makes a lot of sense.

Dave