Just wondering what others have done regarding the choke cable with the twin Hitachi SU set up. Currently I have a choke cable connected to just one carb. I figure it's not so bad since it warms up quickly enough that the choke doesn't need to be on for so long.

I've thought about fab'ing a bracket and connector to go betweent the two carbs, but i don't think it's the most elegant solution. I have a vague recollection of having a twin cable on my old mini I had years ago. I think it had two cables, but only one pull knob.

I made up a cable with second hand parts from a motor cycle wreckers. Lots of bikes split a single cable (usually throttle, but sometimes choke as well) into a double cable. They terminate the single cable in a little plastic tube about 5cm long which has a little "slug" that slides up and down in the tube on the end of the cable. Then on the far end of the tube there is a cap which allows two cables to enter and the inners attach to the slug. Voila! a single cable double-acting at the other end.
I'll try to take a picture and post it.
The bits cost me about A$15 at a wrecker and I got the three cables as well (one in - two out)

I'd be interested in that picture for sure. Thanks.

Find the choke cable from a 180bsss, or a 510sss. They have a twin split cable set up.