Help! Same bike elo26

[kp 29]

I've bought a same bike elo26 it's in bits but saveabill so I need some help please I need to no can I change the back cassette from 7 speed to a 8 speed and the bottom one from a 3 speed to just one

 

[thelarkbox]

Yes to both, ( unless your bike has a perculiar BB and crank) BUT......
fwiw i upgraded my 7speed rear cassette to 8 speed when converting my bike, not a lot of hassle at the wheel end but the replacement 8 speed gear changer is a LOT stiffer than the original 7 speed, and i dont use the extra gear at all, 99% of the time im in the top gear (smallest rear cog) switching to a mid gear only for faster/easier to start pull aways from junctions/lights, when riding both with and without assistance.

With hindsight upgrading your 7 speed cassette with one with a smaller tooth count high gear to aid in 15 mph pedalling if your currently using a gear with 13-14+ teeth may be a better option,,

Also be mindful that when using the motor assist uphill if the gear/pedalling pace + motor cant maintain 8mph+ the mtor will be under undue duress and be at risk of overheating. So the best gear teeth count range on the cassette tosuit you will depend on how and where you intend to ride the bike

 

[saneagle]

I've bought a same bike elo26 it's in bits but saveabill so I need some help please I need to no can I change the back cassette from 7 speed to a 8 speed and the bottom one from a 3 speed to just one

It depends whether you have a cassette (freehub) or freewheel gear set. 7-speed is normally freewheel, and when you fit an 8-speed, it becomes wider on that side so that the wheel is no longer in line with the front one. There are solutions to that, but they're complicated.

Before anything, you need to look at the gears and determine whether it's a freehub or freewheel. Use Google for pictures if you don't know the difference.

What are you trying to achieve by going to 8-speed? The difference is negligible and not really necessary on an electric bike.

 

[kp 29]

It depends whether you have a cassette (freehub) or freewheel gear set. 7-speed is normally freewheel, and when you fit an 8-speed, it becomes wider on that side so that the wheel is no longer in line with the front one. There are solutions to that, but they're complicated.

Before anything, you need to look at the gears and determine whether it's a freehub or freewheel. Use Google for pictures if you don't know the difference.

What are you trying to achieve by going to 8-speed? The difference is negligible and not really necessary on an electric bike.

Thanks for your help if I don't put a 8 speed on the back can I change the center from a 3 speed to a single speed

 

[matthewslack]

Thanks for your help if I don't put a 8 speed on the back can I change the center from a 3 speed to a single speed

Of course. It is standard bike stuff, not specifically electric bike stuff.

If you want specific advice then post pictures of your front cogs and bottom bracket so that people know what you are starting with.