Anyone seen the new roost cylinder prototype?

Just been doing some searching and found a prototype for a new roost cylinder. They call it the havoc.


Quadruple bridged exhaust port

With the occasional bit of liner between the transfers

http://4x4fotos.nl/upload/img.php?image=9028_4d07ba12edf811e2bcde22000a1f9e67_7_qnu4.jpg

98cc cylinder 52 mm bore and stroke of 46mm

http://4x4fotos.nl/upload/img.php?image=3301_302964_509989735729741_2146363904_n_wy76.jpg

Looks amazing, tested at 31.5bhp apparently. Im trying to work out whats going on around the exhaust outlet.Think there may be extra coolant passages surrounding it and pair of bolt on side pieces to cover them up.

 

Blimey. Complicated casting with the auxiliary exhaust ports. Propper swiss cheese.
Is that a power valve on there as well ?

 

I read up a bit more, those definately seem to be extra coolant passages either side and are closed off with a plate bolted over the top.