6 speed shifter, 7 speed cassette?

Hi, I'm sorting my daughters uni bike ready for the new term. Just a cheap thing.
The back wheel got kicked in last year, so I was going to replace it with a spare wheel I have.
Trouble is, the old wheel/ shifter is 6 speed (freewheel), the spare wheel is 7 speed (freehub). Will I be able to set up to use 6 gears on the 7 speed cassette with the current shifter, or is the cable pull different between 6 and 7 gear?
Otherwise, I'll get a 7 speed shifter.
Cheers
The back wheel got kicked in last year, so I was going to replace it with a spare wheel I have.
Trouble is, the old wheel/ shifter is 6 speed (freewheel), the spare wheel is 7 speed (freehub). Will I be able to set up to use 6 gears on the 7 speed cassette with the current shifter, or is the cable pull different between 6 and 7 gear?
Otherwise, I'll get a 7 speed shifter.
Cheers
0
Posts
Drop the chain onto the 7th sprocket with the lever in 6th gear, tension the cable and tighten the bolt and use the cable adjusters to line everything up then go up the block and see if all the other gears index cleanly.
If they do then just set the limiting screws accordingly, if they don't work then get the 7 speed shifter.
Google 7-speed shifter right hand and see what you get.
I got this Shimano Altus 7-speed shifer for ££8.95
https://www.amazon.co.uk/Shimano-Respon ... th=1&psc=1
All you have to be sure of is that the shifter and mech match by brand, normally if it's not Shimano, then it's SRAM
This one for example at £9.99
https://www.bikester.co.uk/bike-parts/g ... v_chn=shop
Don't take my word for it do your own checking and shopping!
A 7 speed shifter will work just fine with your 6 speed mech, so you only need a new (or new to you) shifter.
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