Earlier this week I placed a picture of my Viscount Aerospace 600ex on a Facebook thread where another owner had posted a picture of his 600ex .
The eagle eyed other owner was soon messaging me with a list of questions to answer , starting off with asking me ” What size is the biggest rear sprocket?” , then came “Yours has mudguard eyes and does it have any cut outs in the bottom bracket shell ?”
As I was counting the teeth on the sprocket I had a closer look at the wheels as I presumed it had 700c wheels as per the brochure I found on line but they are actually 27” rimmed wheels and looking at the brake calipers there is not enough drop for them to reach 700c sized wheels like the other owner has . When I turned the bike over there were no cut outs in the bottom bracket shell to be seen .
I also noticed that mine has half chromed front forks whilst his don’t , so there are quite a few variations between 2 ” identical” bikes . It would be interesting to see what his frame number is to see which one was built first. My frame number looks to be 6024 or 9, now what that actually means who knows as the top tube decal proudly tells anybody looking it was bike of the year in 1981 so I would expect somewhere between 1982 and 1984 as a build date but who knows .
I suppose a harder look for some production dates on some of the components fitted to the bike might give more of a clue to the production year area .
It’s strange that so many variations can exist between two versions of the same bike , I am not that bothered about the differences as I much prefer the way 27” wheeled bikes ride over the narrower 700c wheels which can lead to a bit of a harsh ride at times . Mudguard mounts are always handy as they give you the option of fitting guards or carriers without having to use “P” clips . I like chrome, so the addition of chromed forks be they half or fully chromed is a real bonus to me .
Of course both bikes are at least 30 years old so they might well have had loads of modifications made over the years as it has passed through the chain of previous owners . I was told by the seller of mine that he was the 2nd owner and all he had replaced were consumables and no major components during his 7 – 8 years of ownership .