Solida was originally a French manufacturer of steel cottered cranks for the lower priced market.

At some point, probably in the mid 70's Solida was taken over by Stronglight.

From the late 70's until the end of the 80's??? Solida made cast aluminum 2nd tier cotterless cranks with swagged on chainring webs to compete against the deluge of Japanese "melt forged" cast aluminum cranks used on entry level to mid range models like this Tourney model.



It's hard to tell what model crank you have because Solida produced a wide variety of alloy cotterless cranks. By the late 80's Solida was also making models with integral webs for the MTB market. Your triple cranks were probably made for that market.

Your question about the chainrings, Stronglight brought out their own version of the Shimano BioPace oval chainrings called BioStrong. Your cranks probably have chainrings made with that design.



My objection to swagged together alloy cranks is that making crankarms with cast in spiders had just about the same manufacturing costs and provided a more rigid part.

The early Japanese swagged cranks had a lot of failures and those memories stuck in my craw: 40+ years as a manufacturing engineer - do it right!!!



Stronglight and Nervar made some inexpensive cast cranks with integral spiders for that same market.

Stronglight TS crank arms.



Nervar Cast Cranks



Making pressure cast "melt forged" parts is fast and easy. Adding an integral web adds very little to the cost of the part.

verktyg (retro grouch)