Brad The Bike Boy: My revised muffler baffle for Minnie

Sunday, November 12, 2017

My revised muffler baffle for Minnie

This is the baffle I knocked up prior to riding to the FOIM. I realised I was later than I expected at that point, so it was quick. Not pretty, but very effective as it happens. Many years ago Mark Harris who was Madaz at that time told me a baffle needs to fully obstruct the linear flow of the gas to really work, but without that obstruction being overly restrictive as such. The previous one was a shorter tube much the same size with an open end, like a Staintune baffle would be. It really didn't make that much difference.

Not sure how this will work on the dyno. Not sure that I want or care to find out.

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The 851

The 400SS

I bought this 400SS (genuine 93 model Australian delivery! Woo hoo huh.) after seeing it in Ebay for what was possibly an good price. As ever, good was too good to be true. Badly repaired and rusted out fuel tank, badly repainted side panels, lots of km (83,000 of the bastards), etc. You know, the usual. Purchased in October 2012, as of now (Jan 2014) I've nearly finished a major service. The cam timing is done with some of the Madasl adjustable pullies that have been drilled in 4 different settings for easy dyno testing. And I have some 900 headers to try a 40mm dual exhaust set up on it (ala M400). Not a great deal of progress for 15 months, so it's taking on a long term feel. There's an F1 endurance style seat base (more taper at the rear) and front fairing sitting around, which will require frame mods to fit. It's a bit of a mental sticking point as this time. But hey, it's not like I can devalue it much more.

The Mighty KR1S 250

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