A question of range

Biged

Esteemed Pedelecer
Dec 7, 2010
269
0
Watnall, Nottingham
My bike's an Agattu.
What i would like to know is how to maximise the range on a charge. On hills is it best to put effort in in high gear with the bike matching your input, or use lower gears, up your cadence and just coast along but take longer?
 

flecc

Member
Oct 25, 2006
53,525
30,825
Reducing the pedal pressure on the internal torque sensor reduces the power and therefore the consumption, so taking it easy is better.

Since maximum power and consumption is at up to 40 pedal rpm, keeping above that by using lower gears is also better.

Therefore, combine the two, lower gear choices to keep the pedals spinning above 40 rpm, keeping the pressure moderate.

Also:

Avoid the high power mode.

Plan your routes where possible to avoid the steepest hills.

Switch off power or select Eco mode whenever the going is easy enough to do that.

Coast downhills as fast as you dare commensurate with safety to avoid braking.

Plan ahead for traffic and obstructions to avoid any braking.
.
 

10mph

Esteemed Pedelecer
Dec 13, 2010
351
0
England
My bike's an Agattu.
My bike is going to be an Agattu.:)

I would like to add another consideration to the points by flecc. Use the power from your own legs at a fairly steady constant rate. Certainly, when using legs for running, endurance athletes working near the limit of their endurance tend to find that a rather constant rate of work ensures a shorter time over a given distance. Thus a roughly constant speed when running is the aim. If one judges ones capability wrongly and sets off at too fast a pace the runner will "die" or "hit the wall" and slow dramatically before the end. Equally a slow pace at the beginning may leave one with a lot of capability at the end for a sprint finish or in the case of an electric bike, energy to continue pedalling when the battery has run out- which might actually be useful!

In preparation for the arrival of my Agattu I have been try to determine what my steady state long term power output capability is. I think it is around 70 to 80 watts. (See http://www.pedelecs.co.uk/forum/electric-bicycles/7512-wattbike.html?highlight=wattbike#post94455) My idea is that I should try and contribute 70 to 80 watts continuously and then call on the bike in its different power assist modes as and when needed to help me uphills or into the wind, or if I just need just that extra trickle of power in the eco mode to keep me up to my target speed, which for me is you may tell from my user name is a modest 10 mph.

Whatever your overall speed requirements are, keep the load on yourself fairly steady so that you can contribute the greatest possible number of your own watt hours before your battery's supply of watt hours is used up and both you and the motor grind to a halt simultaneously !
 

Biged

Esteemed Pedelecer
Dec 7, 2010
269
0
Watnall, Nottingham
Thanks for the input, thought it might be the way.
I have always tended (on std bikes) to keep in high gears and 'tough' it out but the other day i was on a cycle track tootling along in 6th gear at about 8-10mph on lowest assist and it all seemed so easy and i thought this has to be easy for the bike as well.
You have just confirmed that.