WheelchairDriver.com  

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Updated:  01-Jul-11

Welcome

1. POWERCHAIR ONLY:
Detailed Full PowerChair Related ONLY Menu HERE

2. VEHICLE ONLY:
Detailed Wheelchair Accessible Vehicles ONLY menu HERE

3. EVERYTHING ELSE:
Detailed Menu of Everything else HERE!


MY OWN VEHICLES:
Dodge Grand Caravan


VW Caravelle VR6

MY HOME BUILT ULTIMATE POWERCHAIRS:
My SLIGHTLY Modified Improved Powerchair

Part 1 | 2 | 3 | 4 | 5 | 6

My VERY Modified Off Road & All terrain DO ALL Powerchair!
Part 1 | 2 | 3


MISCELLANEOUS POWERCHAIR RELATED:
What Goes Wrong Power Wheelchairs

Powerchair Tyres

Drive your Powerchair by Radio Control

Powerchairs & Range
>

Off Road DO ALL Indoor & Outdoor Powerchairs

Off Road ONLY Outdoor Powerchairs & 4x4
Page 1 | 2

Manual or Electric Wheelchair?

Why ALL Powerchairs NEED  to be Off Road Capable!

Choosing  a Suitable Powerchair

Wheelchair Width


BATTERY AND ELECTRICAL (POWERCHAIRS & SCOOTERS + MOTOR VEHICLES):
Batteries for Both Vans & Power Wheelchairs


Inverters & Chargers

Very flexible charger!


Charging Batteries

Fast Charge Your Power Wheelchair

Which batteries to buy


"DRIVE FROM A WHEELCHAIR" VEHICLES:
Dodge Grand Caravan 1

Dodge Grand Caravan 2
Dodge Grand Caravan 3
Dodge Grand Caravan 4

Latest 2008 2009 2010 Disabled Converted Dodge Chrysler And Voyager Minivans
 
Chrysler Voyager Entervan Diesel

Suzuki Wagon R

More Here

Mercedes Vito - soon!
Kia Sedona - soon!


INSURANCE:
Modified Disabled Vehicle Insurance

Breakdown Cover

USED VEHICLES & OTHER EQUIPMENT:
Disabled Adapted Cars

WHEELCHAIR TRANSPORT
& DRIVE BY TRANSFERRING:


VW Caravelle

Dodge Grand Caravan can be used to transport up to 4 Wheelchair Seated Occupants

Fiat Doblo

Renault Kangoo - soon!
Citroen Berlingo
- soon!
Citroen Dispatch
- soon!
Kia Sedona
- soon!
Volkswagen Sharan
Mercedes Vaneos
Toyota Hiace
Fiat Multiplas
(Wheelchair
passenger travels in the front)

Kangoo ASSIST
(wheelchair
passenger transfers & drives)


ESSENTIAL DISABLED
EQUIPMENT STUFF:

Understanding


Grabbers

Puncture proof tyres

Run Flat tyres

Tyre Weld Aerosol

Fuses!

Spare Key


Wheelchair Ramps

Small Generator

Tools!


VEHICLE ADAPTATIONS:
Control Systems etc
Hand Controls Manual
Hand Controls Electronic
Van / Car Door openers
Van / Car Wheelchair Tie Downs

 


OTHER STUFF:
Used Disabled Equipment for sale

How to lose weight  FAST!

Email about modifying powerchairs

Keep it looking new 1 2

My Accident!


Climate Change

Electric Cars are a Joke!

Disclaimer & About Me

Site Map

Contact

Links

John Williamson


Powerchair and Scooter "Range" Most powerchairs have a specification sheet. On it will be range. This figure is all but meaningless.

Detailed PowerChair Only Menu

Range depends on a large large number of variables. A normal figure quoted will be 20 or 25 miles. In the real world that figure will only ever be achievable by a 5 stone weakling on a levelled smooth surface on a warm day in absolute straight line like a runway. 

Actually that's not quite true, but it may as well be. There is a standardised system in place to measure it here  The REAL test is actually in a big circle, on a flat floor. And much of it is calculated from a full speed few laps. And then the actual range is calculated from the discharge Ah measured. But still for a number of reasons its meaningless.

The meaningless tests ignore the following:   Hills, some turning left and right, and a few street ramps and road cambers and a normal weight human and expect about half of that quoted range. And remember as your batteries age capacity reduces slowly after about the first two weeks until it starts to bother you after a good few months. For the first two weeks capacity will increase by around 6 to 10 percent as the battery gets "run in" or its plates "formed".

And even that figure will vary enormously.
And remember that an average discharge level of 50 percent is preferred if you want your batteries to last more than a year and you begin to see the problem. Their "test" presumes a 100 percent discharge. As it is WITHOUT adding any off road use I run out of range and kill a set of batteries every 10 to 12 months. 

The best way to evaluate and make a "guestimated" real range figure on a powerchair is to look at the following:

a) its top speed. Speed means taller gearing which murders batteries! With 70Ah group 24 "big" full sized batteries and a normal human being, 6mph is a sensible maximum.  4 mph if you are fat takeaway eating slob like me, 8 mph is ok if you are built like a 13 year old ballerina.  Sorry to be blunt. But this is the REALITY if you expect all or most of a days use.

b) user weight. A skinny young girl will go twice as far on a charge as an average guy. A fat person will go HALF as far. Its all about power to weight. Double the weight? You need double the batteries. Or a chair with half the speed.

c) battery size. In Ah (Amp Hours) A 100Ah (Amp Hour) battery has twice the energy of a 50 Ah battery. (But not all of it is always usable) And a double capacity battery is double the weight too - see user weight! In real terms you want the BIGGEST Ah battery you can get.

d) usage. All day? Hills? Many miles? Sat at home? Thick carpets/grass? Of road? Ramps, or flat shopping centres?  HUGE differences in the amount of power used up here. Travelling fast on the flat uses about 1/4 of the power that turning on a carpet, or climbing a small hill does.

So the ultimate bad case? Fat guy with attitude that goes miles everyday and goes off road or on grass walking the dog, uphill, and to the pub/club at night (me!) with small 50Ah batteries in an 8mph powerchair.50Ah batteries under these conditions will  get about 3 or 4 hours heavy use at very best.

So the ultimate good case scenario? Batteries like huge 100Ah, slow 4mph wheelchair, skinny 7 stone ballerina, lives in a flat smooth area, doesn't have a dog, doesn't go far, stays in at night, no off-road, sits at home most of the time. Her powerchair will go all day long (or two) without problems and batteries will last 3 or more years easily if she charges them every other night.

Even tyre pressures (and type) effect range. Correct Powerchair Tire (Tyre) pressures?

What this all amounts to is that you need to understand Powerchair dynamics and batteries gearing (speed) and assess what you need based on usage/environment and user weight.

Don't expect the "pros" to do it for you, because mostly they are VERY clueless about these things.  And salesmen the same. Plus they just want to sell you something to make a dollar.

And absolutely ignore the wheelchair services in the UK since I have yet to speak to anyone there in 12 years with any remote clue about Powerchairs whatsoever!  Same with all the OT's I ever met though.

If you REALLY want all day range, and some speed as well as a few takeaway's then learn to fast charge your powerchair during the day to top up!  It helps your batteries live longer too.

MORE BATTERY INFORMATION
Batteries for Both Vans & Power Wheelchairs

Inverters & Chargers
Charging Batteries
Which batteries to buy
fast charge your powerchair
Very flexible charger!

Lithium Ion Batteries for Powerchairs and Scooters

Powerchair Battery State of Charge

Power Add On for manual wheelchairs
After reading this page you probably already know these are a bad idea!

Detailed PowerChair Only Menu

 

 

 

 

 

 

 

 

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