DNP Freewheel Gears

[awol]

I don't know anything about dnp freewheel gear-sets (yet) and am interested in the Q128H motor d8veh is reviewing which needs one of these gear-sets.
Will this 7 speed one work ok with my existing KMC X8.93 chain, 8 speed shimano acera shifter and shimano M171 48/38/28 chainset and shimano alivio derailleur if I adjust the derailleur stops at one end or the other?
My cassette is currently rated 11-32 I don't use all my gears anyway and this one is 14-28 so will the motor+gears width be less with 7 speeds and therfore fit the frame easier too or are they spread apart more?
https://bmsbattery.com/ebike-parts/48-shimano-14-28-teeth-freewheel-shimano-parts.html?search_query=freewheel&results=4

 

[flecc]

Yes, they are compatible. Indeed the Acera rear mechanism works well even on six sprocket cassettes and Megarange rear sprockets.

In general anything from 5 to 8 sprocket cassettes are compatible, it's the 9, 10, and 11 sprocket rear clusters that need different accompanying components.
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[Deleted member 4366]

I've fitted them on loads of bikes that originally had 8 amd 9 speeds. I never had a problem. In the worst case, you have to do two clicks on one or two of the middle gears and/or the occasional click back when you change.

 

[awol]

Will my cassette removal tool work on the shimano freewheel too of will I need a new removal tool?
All the ones I find on ebay look too similar to guess.

 

[anotherkiwi]

Nope it is slightly different, thinner