Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
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Hello lakeboy, welcome to the forums. your SR rear derailleur should handle a 7spd just fine provided the largest cog is not bigger than..... I think 28T and you rings are "standard" like 42/52 or close to that.
as to which is better.. that can cause a real fight here *giggle* you certainly do not needa Regina unless you are going for a true vintage rebuild. the suntour will work just fine. if you can find one and the price is not too high a shimano uniglide or 'twisttooth' style might shift better but these are getting pricey too.
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,
Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape