my wife’s finding the gearing on her mu uno too easy – for the speed of getting something bought online today, what type sprocket do i need for the rear? and any specific tools required?

it ‘should’ have a shimano single freewheel.. possibly 18t? looks the specs up on dahon website?

if you you can replace with a 16 or 17t… 16t available in shimano..

if it is shimano freewheel you need Park Took FR6 and a spanner/socket to drive it.. or put tool in vice

probably quicker/cheaper to take to shop, buy the 16t freewheel from them and ask them to remove the old one.. don’t need tool to refit the new one

but simpsons cycle offer good mail order service and shoudl supply both or get from ebay

well it’s not the coaster hub version – so possibly is shimano freewheel?
definitely an 18t – so would be looking at 16t or lower due to cambridge flatness

for some reason – my work internet is blocking dahons site – so if someone can post the details that would be nice 🙂

you will not get a smaller than 16t for std freewheel

you could of course also/instead fit a bigger chairing (looks to be 130BCD? std road so you could fit 53, 54, 56 etc, but i would try a 16t first

freehweels at CRC – you can see the 4 prongs for the tool

http://www.chainreactioncycles.com/Models.aspx?ModelID=7805

http://dahon.com/mainnav/folding-bikes/single-view/bike/mu_uno-1.html

Detail Specifications
GENERAL INFORMATION
Speeds 1
Frame Sizes 1
Gear Inches 57″
Distance: Seatpost to Handlebar Min: 625 mm (24.4″) Max: 625 mm (24.4″)
Distance: Saddle to Pedal Min: 685 mm (26.7″) Max: 960 mm (37.0″)
Suggested Rider Height 142 – 193 cm (4’8″ – 6’4″)
Max. Rider Weight 105 kg (230 lbs)
FRAME
Frame PA SERIES – DALLOY ALUMINUM, CUSTOM DRAWN SONUS TUBING, LATTICE FORGED HINGE, PATENTED FUSION AND V-CLAMP TECHNOLOGY
Fork DAHON SLIPSTREAM, DALLOY, PATENTED FUSION TECHNOLOGY, DOUBLE-BUTTED TUBING
COCKPIT
Handlepost FORGED ALLOY, RADIUS FIXED, PATENTED FUSION AND V-CLAMP TECHNOLOGY
Handlebar 6061-T6 ALLOY, FLAT, 580mm
Headset FUSION+, ZERO STACK, CARTRIDGE BEARING
Grips TWO COLOR, ERGONOMIC
Saddle COMFORT, W/ DAHON LOGO, SMOOTH
Seatpost 34 mm x 580 mm ALLOY, FORGED ALLOY CLAMP, MICRO ADJUST
Seat Clamp DAHON TURTLENECK CLAMP
BRAKES
Brakes ALLOY, V-BRAKE, 110 mm
Brake Levers 3 FINGER, ALLOY BRACKET / ALLOY LEVER
Brake Cables LIVEWIRE 5.0, ANTI-COMPRESSION HOUSING, SLICK CABLES, DUPONT L3 LUBRICANT, ALLOY FERRULES
WHEELS
Front Hub NEUTRON, CART. BEARINGS, ULTRALIGHT 58 GRAM DESIGN, 20H, W/ DAHON LOGO
Rear Hub SHIMANO COASTER, 1 SPEED, 28H
Spokes 18/8 GA STAINLESS STEEL
Rims 20″ x 1.5″ ‘DAHON BY VUELTA’, ALLOY, DOUBLEWALL, CNC SIDEWALL
Tires 20″ x 1.75″, 60 PSI, W/ DAHON LOGO, REFLECTIVE STRIPE
TRANSMISSION
Crankset FORGED ALLOY 6061 ARMS, DOUBLE ALLOY GUARDS, 52 T, 170 mm
Freewheel SHIMANO 18T
Bottom Bracket CARTRIDGE, SEALED BEARING, ZINC PLATED SPINDLE, SQUARE TAPER
Chain SINGLE SPEED W/ RUSTBUSTER COATING
Pedals FOLDING, ALLOY BODY – ALLOY CAGE
EXTRAS
Kickstand ALLOY, SINGLE, CENTER MOUNT
Carton 5 PLY
Luggage Socket FRAME INTEGRATED
Clip System PATENTED SYSTEM

ta very muchly