How to mount a top box on a bike?

[cwah]

Hello there,

I've been lurking for A WHILE for a decent BIG quick release box allowing me to put 10 kg battery on it. There are some 48V20AH aluminium battery case I can import from china but shipping cost an arm due to volumetric density, and it's not as big as I need anyway.

I've found this:
http://www.amazon.co.uk/Ryde-17l-Small-Motorcycle-Top/dp/B00CJC5E8U/ref=pd_sim_sbs_auto_5?ie=UTF8&refRID=0SAHEM1J64V43Y79FY6G

That looks like the right solution.

The question now is... how to mount it to the bike frame? I've spotted some cheap £50 bike like this one:
http://www.gumtree.com/p/for-sale/apollo-paradox-mountain-bike/1062588865#photo-content


Mounting it on the rear would create a massive handling issue due to the motor also on the back. I was thinking on the top of the frame? I'm not sure how handling would be however, it might be too high.

That's the best I can find for cheap price for now

 

[Deleted member 4366]

It's virtually impossible to fit that box and put a 20aH battery in it on that bike because of the rear suspension, which will force it too high. A battery of that size and weight needs to go forward of the seat-post if you've got a rear motor on a bike like that.

 

[cwah]

Yes I was planning to put it in front of the seat post but it can prevent me from pedaling properly and might be too high?

 

[Deleted member 4366]

Time to think again!

 

[pdarnett]

In front of the seat post if you've legs like John Wayne.

 

[cwah]

Isn't there any quick release box I can modify in the market apart from this one?