hi all, wanted to share this with you, more garage mania i know its nothing to do with 4x4 but it is an overland build so it might qualify lol
my sister lost the use off her legs about 2 years ago and living in a rural part of Ireland could not get out any further than her garden gate
so i went about building her an off road wheel chair. now i had this built before top gear showed there's so could not believe they had a dedicated slot
and i looked high and low for bits and pieces and general ideas]
so after some googling and looking around the self build robot sites the easiest way was to use an old wheel chair as everything you need ie: controllers, motors and brains is all in one buy just got to find one worthy
well i managed to get hold of a heavy duty one from a cracking young lady in wales worked perfectly just needed a new set of batteries, all i needed was there
just need to build a frame and get hold of some running gear and sought out the drive
in the end i used ride on lawn mower wheels and tyres these were 22.5 inches high and about 10" wide, low ground pressure , perfect,
well nearly and the set i got a hold of had the bearings in all ready, a lot of these ride ons have a fixed to axle affair so they are shaped to maintain drive square peg into a square hole sought of thing.
as the rims are quiet deep i had to some how get direct drive, this was achieved with the famous gas red band pipe a motor bike sprocket and a fancy bit of turning and welding.
the stub axles i turned in the lathe using some 30mm round bar, first turn for the bearing mount, 2nd turn for the 12mm threaded end, then a 1mm slot for a snap ring to hold the rim in place on the axle.
now drive, ( i have a cunning plan ) as boldrick would say
chris you will like this is, myford ml4, i think it is any way
this is welded in to the rim to space out the sprocket , a large round plate turned, drilled, and welded for sprocket mounts
i am not an engineer of any soughts just a few lessons at school so you can imagine the setting up to get every thing together.
welding here was tight, especially the prep, a wire wheel in the drill was good enough,
now the gearing, i looked at the formula, and looked again and looked again still nothing, so took a guess, the motors i had were four speed 4 pole high torque, would carry some one weighing upto 150kgs so pretty powerfull, right a large crank on the wheel end and the smallest sprocket on the drive got to be a winner,
now the world of motor bike chains and drive sprockets, yes there are differant sizes which one, i went for the size a 125cc uses as the smaller size was for the likes of these scooter things that made an appearance for a while
2 sets were ordered and a couple of chains
right gentlemen im going to pause here for a mo, i seemed to have lost some pics here, will see you soon
later joe
my sister lost the use off her legs about 2 years ago and living in a rural part of Ireland could not get out any further than her garden gate
so i went about building her an off road wheel chair. now i had this built before top gear showed there's so could not believe they had a dedicated slot
and i looked high and low for bits and pieces and general ideas]
so after some googling and looking around the self build robot sites the easiest way was to use an old wheel chair as everything you need ie: controllers, motors and brains is all in one buy just got to find one worthy
well i managed to get hold of a heavy duty one from a cracking young lady in wales worked perfectly just needed a new set of batteries, all i needed was there
just need to build a frame and get hold of some running gear and sought out the drive
in the end i used ride on lawn mower wheels and tyres these were 22.5 inches high and about 10" wide, low ground pressure , perfect,
well nearly and the set i got a hold of had the bearings in all ready, a lot of these ride ons have a fixed to axle affair so they are shaped to maintain drive square peg into a square hole sought of thing.
as the rims are quiet deep i had to some how get direct drive, this was achieved with the famous gas red band pipe a motor bike sprocket and a fancy bit of turning and welding.
the stub axles i turned in the lathe using some 30mm round bar, first turn for the bearing mount, 2nd turn for the 12mm threaded end, then a 1mm slot for a snap ring to hold the rim in place on the axle.
now drive, ( i have a cunning plan ) as boldrick would say
chris you will like this is, myford ml4, i think it is any way
this is welded in to the rim to space out the sprocket , a large round plate turned, drilled, and welded for sprocket mounts
i am not an engineer of any soughts just a few lessons at school so you can imagine the setting up to get every thing together.
welding here was tight, especially the prep, a wire wheel in the drill was good enough,
now the gearing, i looked at the formula, and looked again and looked again still nothing, so took a guess, the motors i had were four speed 4 pole high torque, would carry some one weighing upto 150kgs so pretty powerfull, right a large crank on the wheel end and the smallest sprocket on the drive got to be a winner,
now the world of motor bike chains and drive sprockets, yes there are differant sizes which one, i went for the size a 125cc uses as the smaller size was for the likes of these scooter things that made an appearance for a while
2 sets were ordered and a couple of chains
right gentlemen im going to pause here for a mo, i seemed to have lost some pics here, will see you soon
later joe
Does sis make full use of it?
