Came across this cool little frame for mounting aftermarket cafe seats to the stock seat hinges on RDs (and I am assuming R5s), allowing you to bolt it to the stock location and maintain the flip-open functionality. This way you can still get to your oil filler and battery should you go with a lower-profile seat. I'm definitely interested. I don't know anything about these guys, the quality of their work or what not, but the pics look good. I'll be contacting them in the near future.
In the meantime, here is their product description from an eBay auction:
Now there is a simple solution for mounting your custom fiberglass or carbon fiber cafe seat or street tracker seat. Our all alluminum frames are specifically desiged to allow you to bolt the seat hinges and seat latch off of a stock DS7 or RD 250/350. You maintain normal seat operation. No battery modification. Best of all no ugly gap between the seat and the gas tank. Pre-drilled for installation of your latch and hinges. We supply stainless steel bolts, nylon washers, nuts and lock washers. All you need to do is align your seat and drill the holes to match using the pre drilled holes in the seat frame for the hinges and latch. Rounded stainless steel Allen bolts are easily covered by seat padding.
Will be listing models for XS650 and Triumph in the near future. Other models to come.
These are designed for flat bottomed fiberglass and carbon fiber seat pans. Curved models like the XR750 pans may require some modification.
BTW they make super-trick CF flyscreens too, to complete the cafe look. Very sharp.
UPDATE: Jerry Jensen from RD Innovations sent in some more info on his products:
Really happy to see your piece on our products in your blog. Just to let you know our seat frames are made out of aircraft aluminum. We are currently supplying seat frames to Moto Carrera and HVC. My business is new and little promotions like this are a real shot in the arm. Thanks for helping us out!
This is a site dedicated to the 1970-72 Yamaha 350 R5 two-strokes. These bikes are surprisingly fast for their size and age, lifting the front wheel in the first two gears and keeping up with modern bikes twice their size. It's also extremely flickable and great fun around the city or carving up canyon roads. It was the direct descendant of the Yamaha factory TR production racers. Dirty, loud, crazy quick and relatively affordable when new (and more so now!), it was, and still is, a giant-killer.
I picked up an R5C for my first motorcycle a few years ago, and was frustrated with the lack of information on these bikes available on the web. The original purpose of this site was to document the process of bringing the R5 back to life. But as I spent time gathering as much relevant and entertaining information as possible into one place for my own reference, I thought it would be helpful to share it with people who are also interested in these bikes, as well as other Yamahas, vintage bikes, and cool motorcycles in general.