larger sprocket = more speed ?

[stu]

Has anyone put a larger sprocket on to go faster when you have reached 15 mph, the gearing on my bike (e voyager ) is 7 gears and is not enough, when on the flat or going downhill there is no point in me peddling as my legs cant keep up with it,

 

[Deleted member 4366]

You need a DNP rear free-wheel set with a 11T top gear, which you can get from Cyclezee. Alternatively, you can use a 52T/39T double chain-wheel, which you can find on Ebay. You might have to fit a longer BB for that to get the chain-wheel away from the frame,but not usually.

 

[Arbol]

You might have to fit a longer BB for that to get the chain-wheel away from the frame,but not usually.

This question is not really related to the original question of the post, but:

which kind of longer BB are there in the market? I ask this because I would like to put a 18650 battery in the frame, and one of the constraints is the angle of the triangle at the BB. Getting a few extra mm width would be handy there.

 

[Deleted member 4366]

http://www.ebay.co.uk/itm/Shimano-BB-UN26-Square-Taper-Bottom-Bracket-110-113-117-5-122-123-/380884066544?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item58ae75a0f0

 

[stu]

You need a DNP rear free-wheel set with a 11T top gear, which you can get from Cyclezee. Alternatively, you can use a 52T/39T double chain-wheel, which you can find on Ebay. You might have to fit a longer BB for that to get the chain-wheel away from the frame,but not usually.

Thanks for the advice, please forgive my ignorance but what is a bb.

 

[Artstu]

BB, bottom bracket, the spindle that connects the two pedal cranks together.

 

[D C]

Bottom bracket which the pedal cranks rotate around. d8veh's link has a picture

 

[stu]

much obliged Dc Artstu d8veh