This has been a great help, I've just picked up a newish RGK Hi-Lite Titanium and the castor flutter was horrendous, but thanks to this video I can now do parkrun in it. Thanks so much. 😁
Someone gave me a new wheelchair. It has 2 horrible casters. Both front casters get stuck. I don't know whether something is broken or they were put on incorrectly. I am hurting my arms and shoulders and back. Is this something I can fix? Thank you in advance for your advice.
Caster Shimmy is also caused by - if everything is perfect - by the chairs angle at caster pivot. Rear wheels moved to different mountings holes, changing caster angle. Too much negative/positive caster angle will cause a caster to shimmy. With bubble level set against front of caster mounting tube, move level to true level to see how much gap there is at the bottom. As one can easily see - caster mounts in this video are tilted quite a bit to the rear at bottom of tube mount. When rear wheels touch the floor, this angle will be less. Just noticed this guys video - he explains issue of caster angle in very simple example in first minute. th-cam.com/video/MnxTgHUiRjI/w-d-xo.html Cheers
Take the Chair to an Industrial Supply to get the correct bearings in the first place. Bearings need to be a thrust loaded bearing,, when its on it's side when used as a caster application, where the bearing race is ground with face tilted to carry a heavy load when bearing is laying on it's side. Bearings don't like to be pounded on,, on their side,, this puts golf ball dents in the balls,, and can jam the bearing. Second - They need to be a certified sealed bearing,, close as possible to water-proof. This will now give bearings just a slight drag un-noticed, but last twenty years or more, and never need lube. Now main bolt will need very little tension, but should be lock nut design, to keep from coming loose. Nylock is common. *Not shielded bearings, these are made only with a metal dust cover, and cannot hold lubricant, and are not waterproof. If one has a good set of Dial Calipers,, one could pre-size what bearings should be used. Or if code can be accessed that's stamped on side of bearing, then you have it made to up-grade looking at bearing listings catalog. The initial original code on bearing will show what the dimensions are in the catalog, then search categories with the three basic dimensions. Maybe easier to call chair supplier to get bearing code that they are using for that model. But if one gets stuck on the process,, give me a holler, and we'll get to it. In the mean time,, look up your nearest industrial supplier. They are the coolest people to meet. And cost of these basic parts should be ten times cheaper as well, then heading to wheel chair store. At 67,, pretty darn difficult to fool a farmer now, and won't end well trying. Cheers
Hi....long story short..can I remove the entire assembly and use it on another chair? My new chair looks to be an exact match but the nrw one is too high for me.
Either the bearings are worn out, the axle shaft is worn or bent, or the fork holes may be wallowed out or the fork may be bent. Or the casters may be worn out if the bearings have been bad and someone kept using the chair.
This has been a great help, I've just picked up a newish RGK Hi-Lite Titanium and the castor flutter was horrendous, but thanks to this video I can now do parkrun in it. Thanks so much. 😁
For some reason I waited a few weeks to search for the answer to my caster chatter issue so I’ve just been mobbing in a wheelie everywhere lol
Thank you!
You are a genius my friend. Thank you!!!!!
Also thank you for this tutorial, I have just subscribed to your channel.
Someone gave me a new wheelchair. It has 2 horrible casters. Both front casters get stuck. I don't know whether something is broken or they were put on incorrectly. I am hurting my arms and shoulders and back. Is this something I can fix? Thank you in advance for your advice.
Caster Shimmy is also caused by - if everything is perfect -
by the chairs angle at caster pivot.
Rear wheels moved to different mountings holes, changing caster angle.
Too much negative/positive caster angle will cause a caster to shimmy.
With bubble level set against front of caster mounting tube,
move level to true level to see how much gap there is at the bottom.
As one can easily see - caster mounts in this video are tilted quite a bit
to the rear at bottom of tube mount.
When rear wheels touch the floor, this angle will be less.
Just noticed this guys video - he explains issue of caster angle in very simple example in first minute.
th-cam.com/video/MnxTgHUiRjI/w-d-xo.html
Cheers
Take the Chair to an Industrial Supply to get the correct bearings in the first place.
Bearings need to be a thrust loaded bearing,, when its on it's side when used as a caster application,
where the bearing race is ground with face tilted to carry a heavy load when bearing is laying on it's side.
Bearings don't like to be pounded on,, on their side,, this puts golf ball
dents in the balls,, and can jam the bearing.
Second - They need to be a certified sealed bearing,, close as possible
to water-proof. This will now give bearings just a slight drag un-noticed,
but last twenty years or more, and never need lube.
Now main bolt will need very little tension,
but should be lock nut design,
to keep from coming loose.
Nylock is common.
*Not shielded bearings, these are made only with a metal dust cover,
and cannot hold lubricant, and are not waterproof.
If one has a good set of Dial Calipers,,
one could pre-size what bearings should be used.
Or if code can be accessed that's stamped on side of bearing,
then you have it made to up-grade looking at bearing listings catalog.
The initial original code on bearing will show what the dimensions are
in the catalog, then search categories with the three basic dimensions.
Maybe easier to call chair supplier to get bearing code that they are
using for that model.
But if one gets stuck on the process,, give me a holler,
and we'll get to it.
In the mean time,, look up your nearest industrial supplier.
They are the coolest people to meet.
And cost of these basic parts should be ten times cheaper as well,
then heading to wheel chair store.
At 67,, pretty darn difficult to fool a farmer now,
and won't end well trying.
Cheers
Hi....long story short..can I remove the entire assembly and use it on another chair? My new chair looks to be an exact match but the nrw one is too high for me.
Had it for over a year
I wish I could find a self propelled example
My caster keeps getting stuck and won’t spin 🥺 I can’t hardly push myself in my chair help
How to adjust wheel wobble on Aki wheelchair
Why is one of my caster tires being rubbed by the fork and how can I fix it? How can only one side be so out of alignment?
Either the bearings are worn out, the axle shaft is worn or bent, or the fork holes may be wallowed out or the fork may be bent. Or the casters may be worn out if the bearings have been bad and someone kept using the chair.
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Not really a fix, but a 'hack'
So what's the fix? All my wheel chairs do this even when new. I can't stand it!
@@philipduncan8636 I know, its ridiculous that no one has come up with a dampener small enough for caster wheels.