Nearly finished

Yes, its almost ready to be fired up. Just a few odds and ends to finish off. Loads done today, I was hoping to position the carburettor on top of the engine, but there isn't quite enough space inside the cowling so plan "B" takes effect and the carb is mounted under the engine mount, between the exhausts.

View of the front underside

The carb is mounted with a 4.5mm offset. This is to compensate for the differing lengths of delivery tube. (They are different due to the 9.0mm cylinder offset.) The 4.5mm offset makes the mixture transit distance equal to both port and starboard cylinders.

Temporary fitting to the firewall

View of the rear with mount removed to show delivery tubes

The delivery tube system is made from 10mm micro bore tube and two standard elbow fittings. These fittings were modified to remove the solder ring and to add lightness. The two joints either side of the carb are butt joints. All the joints on the delivery tubes are silver soldered and there is a spigot silver soldered to the main part which extends into the carburettor manifold and the aluminium adaptor is glued to the spigot using Loctite 603 oil tolerant retainer. The carburettor is held in place using two M3 grub screws.

I can hear it running already!