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Thanks Matt, that 's the first I've ever seen of Dave Aldana riding a round-case flat track Ducati. Its way cool in my book.

I wish I could remember the link, but there was an article where a guy documented his history building a bevel drive road racer along with some help from Axtell, who built a lot of the XR-750 flat trackers. In the end, they both seemed to conclude the 2 valve bevel heads were good, but not really in the class of the XR-750 heads. Thought that was kind of surprising. Maybe that's why Aldana didn't do a whole lot with the Duck flat tracker.

Kinda strange, folks always seem to think, "Oh, its an OHC or DOHC. Its gotta be the best in flow, waaaaay better than any ancient pushrod engine". But I guess that's something that Norton or HD (as far s the XR750 was concerned) might disagree.

Even GM, with their somewhat old-school pushrod LS engines, make crazy power nowadays.

<blockquote data-quote="sportster_restorer" data-source="post: 177617" data-attributes="member: 3107">Thanks Matt, that &#039;s the first I&#039;ve ever seen of Dave Aldana riding a round-case flat track Ducati. Its way cool in my book. I wish I could remember the link, but there was an article where&nbsp; a guy documented his history building a bevel drive road racer along with some help from Axtell, who built a lot of the XR-750 flat trackers. In the end, they both seemed to conclude the 2 valve bevel heads were good, but not really in the class of the XR-750 heads. Thought that was kind of surprising. Maybe that&#039;s why Aldana didn&#039;t do a whole lot with the Duck flat tracker. Kinda strange, folks always seem to think, &quot;Oh, its an OHC or DOHC. Its gotta be the best in flow, waaaaay better than any ancient pushrod engine&quot;. But I guess that&#039;s something that Norton or HD (as far s the XR750 was concerned) might disagree. Even GM, with their somewhat old-school pushrod LS engines, make crazy power nowadays.</blockquote>

[QUOTE="sportster_restorer, post: 177617, member: 3107"] Thanks Matt, that 's the first I've ever seen of Dave Aldana riding a round-case flat track Ducati. Its way cool in my book. I wish I could remember the link, but there was an article where a guy documented his history building a bevel drive road racer along with some help from Axtell, who built a lot of the XR-750 flat trackers. In the end, they both seemed to conclude the 2 valve bevel heads were good, but not really in the class of the XR-750 heads. Thought that was kind of surprising. Maybe that's why Aldana didn't do a whole lot with the Duck flat tracker. Kinda strange, folks always seem to think, "Oh, its an OHC or DOHC. Its gotta be the best in flow, waaaaay better than any ancient pushrod engine". But I guess that's something that Norton or HD (as far s the XR750 was concerned) might disagree. Even GM, with their somewhat old-school pushrod LS engines, make crazy power nowadays. [/QUOTE]