I've got a re-purposed road-bike with 80's vintage Shimano 600 calipers, paired with flat-bar brake levers. I'd like for my wife to use it, but she complains that it takes too much grip strength (she has tendinitis that makes it painful for her to grip things tightly) to activate the brakes. She thinks that the return springs in the calipers are too stiff.
Does anyone have recommendations for an inexpensive replacement set of brake calipers that combines the following qualities:
- Not a recessed bolt mount
- Compatible with flat-bar levers
- Long / variable reach (this was a 27" wheel bike converted to 700c wheels)
- Clearance for 700C x 28 tires, fenders are optional
- Most important: the force required to actuate the brakes is less than that required for an 80's vintage Shimano design. Would a dual-pivot design require less force? Center-pull?
I'm aware that there are other braking technologies (coaster brake, hydraulic discs, cantilevers) that might serve her better, but I'm trying to get her interested in the activity of cycling, before buying a new / different bike (with different brakes) for her.
Thanks in advance!