My previous post turned up a couple of surprises about SB1995. The first, smaller surprise, was the owner’s initials on the fork. The bigger surprise was the Imperial diameter tubing. SB1995 reinforces my belief that SBDU frames can be read like a book, but like a good book, it can come back and bite you with unexpected twists.
“Never assume with the SBDU”. That is a phrase I say a lot. It is a mantra I repeat when I’m assessing SBDU frames and bikes. Winding the clock back to 1978 you would think it was safe to assume that the Reynolds 753 tubing type on your frame would be Metric diameter. But remember the mantra, “Never assume with the SBDU”, “Never assume with the SBDU”, “Never assume with the SBDU”.
Recollections are a funny thing. Could you remember details or be precise about a specific date from maybe only a month ago? Could you remember a detail from ten years ago? How about four decades ago? Memories become fuzzy with the passage of time. The brain forgets, and confusion prevails. So what can I figure out about this SBDU Reynolds 753 frame based on the slightly fuzzy information I have?