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Very Nice 1972 Yamaha R5. But, it isn't an RD350. They started making RD350's in 1973-1975. Now, the 1974 RD350 in front of this, IS an RD350. The R5 is a piston port motor, as is evidenced by the 2 bolt flanges on the carburetor boots. They usually have a 5 speed tranny, but you can replace it by using an Rd350/400 tranny for 6 speeds. Nice work on the swing arm, it should handle well. I am curious if you had the shock and forks re-sprung and re-valved for the weight of the R5? I am sure the GSXR1000 weighs considerably more than the 280-300lbs this bike probably weighs, and might be a little stiff. The frame geometry looks pretty well balanced, although the bike sits more like a Motard than a Street bike. Lots of ground clearance!! Have you had this on the track, and if so, how does it handle?
Does the 1970 Yamaha R5B have have a battery to generate a spark? Also I might possibly need both carburetors replaced. I wonder if you would have some for sale if I do. 73s from TEXAS!
my 1972 r5c did need the battery charged to spark, but if u have ur stock carbs you can clean them out and stuff, stock jet is 120, 30. I put uni pod filters on it and 135 32.5 jet with the mixture screw 0.9 turns out, stock is 1.5, also i highly suggest sanding the stock ignition points with around 400 grit sandpaper and the connection will really improve the spark, that got my bike running and then i went with a powerdynamo
