Suspension frame. I do not know how many bricks or bags of ready mix this can handle, but I do believe the wheels will have to be extra strong.
Ladders can be hung on the side.
|less trail equals less wheel flop|
BICYCLE WHEEL 26 x 2.125 HD 11-G STEEL - Worksman 4131QA Compatible
worksman cycles on eBay
Wheel Master Rear Bicycle Wheel 26 x 1.75/2.125 36H, Steel.
STA-TRU FRONT DISC WHEEL HEAVY DUTY 26X2.125"
|This is the right kind of bicycle for a bike share program|
Payload is the weight the ELF will carry (driver and cargo) and does not include the weight
of the ELF. (150lbs)
We are required to limit max speed on flat under electric power to 20mph.
22% grade is tough and I have no data beyond seat of the pants but
we have been able to gear the ELF to meet our customers needs thus far.
There are lots of ELF owners in mountain settings across the US and Canada.We have commercial users pushing the ELF much harder than our claims.
That is 500 lbs on a one HP motor with one to one gearing! But at least it does use a small drive wheel.
Two large lithium batterys, but a third one would help with climbing steep hills.
The best way to add a lower gear to the Elf would be a 12 to 14 inch rim pulley
that would not let the belt slip when wet. Driven by a notched trapezoid timing belt.
A 4 to 1 reduction would help a lot.
Cross ridges inside the rim to fit the belt's notches' pitch would do it for sure.
Held on to the drive wheel with tabs, they should be made in factory so that they
are all the same. You can buy a small pulley for the motor that already have these ridges.
These rim pulleys were used on some of the first motorcycles. And they still can work on
motorized bicycles if there is room for them to fit, as there appears to be on the rear frameof the Elf.
|Rear hub; Needs a larger sprocket for a lower gear, but the brake is in the way.|
|right side of motor|
|left side of motor|
|the pedals need clips|
|slow it down!!|