Contrary to what is commonly said out on the interwebs, the Selvys 200R was not a sleeved down 250R cylinder. A sleeved down 250R was the poor man's 200R. It was rediculously peaky and could hardly develop useable power. The Selvys on the other hand, utilized a reduced stroke in the crank and a massively reworked and chopped down cylinder. It produced tremendous useable power for the race track and would make a hero out of a privateer.
And here is a link to the thread from the forums that has scans of the article. This is so the lazy folks don't have to use the search tool. http://www.3wheelerworld.com/showthr...ghlight=selvys
