Hi - I'm looking for high speed pedelec commuting

[efroome]

Hi fellow pelelecs,

Im aiming to save the world by commuting around 23miles each way within a set budget and time bracket. The budget is £800 and the time bracket is 1hr ish.

So here is my entry. A 7year old carrera TDF with a £699 UK Legal bafang BBS01 (Current total weight is around 15kg). Below is the bike in all its glory and screenshot of my first commute, 1hr 8 with an average of slightly over 20mph. Quite pleased with the result but to bring that time down I need to shed a few more pounds off with out spending too much.

1. New lighter Stem
2. New pedal arms (I assume any will work ?)
3. Custom larger crank (Lekkie if I can find a cheap second hand one)
4. Carbon forks

https://drive.google.com/open?id=0B2g9Po0btwPyWEVOWEpRUHotUDZHc1pKb2hqaXZfN0dHQ0dv

https://drive.google.com/open?id=0B2g9Po0btwPyem5CdDNhNTQwOUlXM1hnQXlVTjQxNDdMejRz

 

[anotherkiwi]

Hi fellow pelelecs,

Im aiming to save the world by commuting around 23miles each way within a set budget and time bracket. The budget is £800 and the time bracket is 1hr ish.

So here is my entry. A 7year old carrera TDF with a £699 UK Legal bafang BBS01 (Current total weight is around 15kg). Below is the bike in all its glory and screenshot of my first commute, 1hr 8 with an average of slightly over 20mph. Quite pleased with the result but to bring that time down I need to shed a few more pounds off with out spending too much.

1. New lighter Stem
2. New pedal arms (I assume any will work ?)
3. Custom larger crank (Lekkie if I can find a cheap second hand one)
4. Carbon forks

Your pictures didn't work.

You can mount Shimano Steps pedal arms, they have a nice Q factor or any square taper pedal arms where you have a left and a right one available.
Here is a selection of cranks you can just bolt on: https://www.dutchbikebits.com/alligt/

You can turn your Amps up a bit on the Bafang controller and set top speed to 45 km/h. With a big chainwheel and more Amps you risk frying the controller if you don't start off in low gear, these motors don't like being bogged down.

 

[spanos]

To play devil's avocado

Those tiny weight gains on an ebikeb don't make much sense. They will make little difference

Do you carry a backpack or anything? How much does it weigh? And after a few weeks/months commuting I find it amazing how my pack grows in weight over time. I swear it has same stuff........and just a few bits of accumulated crap. Empty the crap and I'm always shocked at weight loss. I even saved nearly half a kilo by ditching the cheapo work issue laptop backpack

And , of course, have a poo before you leave in morning!

The other proper weight loss is battery. What have you got? Eg a 10ah battery can be made from 40 x 2500 mah cells or 30 x 3250 mah cells ( more or less)

Big weight diff.

And do you really need the Ah you have ? Could you have less and charge at work ? ( new charger less than a tenner on Chinese slow boat)

Plus as already stated you can play with settings

 

[efroome]

@anotherkiwi Thanks for pedal arm link and pointing out the broken images. Do you have to hotrod to increase the amps ? Yeah I get the risks around burning out the motor and I always go to lower gears for starting etc !

@spanos thanks for the response and yeah I suspect your right, but its fun trying to get the bike weight down all the same ! I have a 9ah battery so can't really do much in that area. My own weight is probably the real saving that can be made and I can loose that for free !

 

[anotherkiwi]

@anotherkiwi Thanks for pedal arm link and pointing out the broken images. Do you have to hotrod to increase the amps ? Yeah I get the risks around burning out the motor and I always go to lower gears for starting etc !

@spanos thanks for the response and yeah I suspect your right, but its fun trying to get the bike weight down all the same ! I have a 9ah battery so can't really do much in that area. My own weight is probably the real saving that can be made and I can loose that for free !

Reprogram via cable which is available from various places in the UK.

 

[Deleted member 4366]

It might not be such a good idea to increase the current much. Can you give a link to exactly which battery you have? Don't forget that range will go down more or less in direct proportion to the current increase.

 

[topographer]

Attach a handlebar fairing, shave yer head and wear a shiny latex body suit.