MA40 rims were state of the art and as far as I can remember top of the range Mavic clincher rims in the 1980s. I had some made up onto Specialized hubs with SS spokes and have used those wheels for 25 years without even having them trued up again, as they are still true (touch wood I don't hit a big pothole next time out). I also had the sprint rim equivalent, the GP4, made up at around the same time, give or take a year or two, onto Royce hubs with SS spokes for timetrialling and again those wheels are still true. This is a testament to the wheel builder Mick Madgett of Madgett's Cycles in Diss, Norfolk, as well as to the Mavic rims. Recently I got him to make me some Mavic Open Pros onto Ambrosio hubs. Hopefully they will last me 25 plus years as well.
If your MA40s are still in good condition then it's worth rebuilding them (if they need it) - they are strong and not heavy rims.
p.s. Sorry for the diversion Johnnywbike, and sorry, my MA40s are not for sale!
MA40 rims were state of the art and as far as I can remember top of the range Mavic clincher rims in the 1980s. I had some made up onto Specialized hubs with SS spokes and have used those wheels for 25 years without even having them trued up again, as they are still true (touch wood I don't hit a big pothole next time out). I also had the sprint rim equivalent, the GP4, made up at around the same time, give or take a year or two, onto Royce hubs with SS spokes for timetrialling and again those wheels are still true. This is a testament to the wheel builder Mick Madgett of Madgett's Cycles in Diss, Norfolk, as well as to the Mavic rims. Recently I got him to make me some Mavic Open Pros onto Ambrosio hubs. Hopefully they will last me 25 plus years as well.
If your MA40s are still in good condition then it's worth rebuilding them (if they need it) - they are strong and not heavy rims.
p.s. Sorry for the diversion Johnnywbike, and sorry, my MA40s are not for sale!