hi does any one know what propshaft i would need for my locost i had a pint but know changing to 1000cc yamaha engine but have no idea what fits do ihave to get one made or modified

You will have to get one modified at least.

You will need one with a center bearing to, otherwise it will be to long.

As others have said, a new or modified 2 piece prop. I would say pay the extra for a TRT (torque resiliant tube) as it takes out a lot of the banging and crashing on gear changes - well worth the slight increase in price.

I would reccomend Bailey Morris - they were very helpful and well priced for me.

Do you often think of engine changes when you have had a pint

Another thumbs up for Bailey and Morris put my order in on the Friday and was on my car the following Thursday excellent service and workmanship!! I sent them a picture by email of my sprocket adaptor and the lengths i required and they did the rest.
Greg