Scooterotica

I have been doing a bit more to Dans barrel tonight and its not far of finished I have finished of putting the rest of the ports in the back of the cylinder, I must say it looks pretty impresive when you look at it with a piston in place at bdc (Iam sure that Dan will have some pics up soon when he comes over to have a look at it ) one of my biggest wories is the piston as I have done this mod using the STD piston with those big fat rings, cos the ring pegs point forward and won't foul on the rear ports I have also kept the ex port width within its tolerance to help the rings stay together also with the feed's to the new ports I have kept them as tight as posible so they are as gentle to the rings as posible, at the end of the day this is a test barrel and will be alterd if required to gain max power and reliability as we can maintain, I know that the std pistons are sh1t I didn,t have any other to use Dan is talking about using a modern piston with thiner rings my only concern is where the ring pegs are located will they foul in the ports that I have put in if so it is back to the drawing board and re locate the ports (these things are set to try us ) I will keep you all posted with the progress of the work.

Cheers
Mick.

My fave post of 2009 so far.....

I'm really looking forward to seeing the result of Mick's efforts.

Fascinating. Some people are just toooooooo clever!

And they all live too far away from my location.

Cylinder coming along, still needs a bit of tidying and chamfering, but Mick is doing a sterling job:

It's all looking very tasty so far Mick.
So will you be designing and making the pipe also, to unlocks it's true potential ??

what exhaust and transfer/inlet timings will you use ????

looks good, the work. But I hope you will use some other piston !!!

fishi

rog60 wrote:And they all live too far away from my location.

Yeh bud, talk about far from home

20hp @ 8500 on the dyno should be possible - that's the sort of figures people can manage with rotary Polini 135 Vespas and the Lammy has a less restrictive inlet.

Would be a good idea to find a better piston now though as Fishi says.

its ok chaps.......we are well aware a better piston is required...................

Supereibar wrote:

rog60 wrote:And they all live too far away from my location.

Yeh bud, talk about far from home

How do you think I feel,I live in Australia
Other side of the freakin' planet...