Tyre off wheels, wheel off hub?

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Tyre off wheels, wheel off hub?

Postby funkykeyboard » 03 Sep 2019, 20:05

I have the wheels that BM had, the aeroplane nosewheel, but cannot get it off the wheelchair even though the central bolt and all the bolts holding the wheel together have been taken out. Can anybody help with 2 things;

1. What is the best way to separate the wheel without damaging the tyre?
2. What is the best way to get the wheel off the hope if it remains stuck on?

https://www.youtube.com/watch?v=RV-VBoD ... e=youtu.be

Any advice appreciated, Tremulous Tetra. :-)
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Re: Tyre off wheels, wheel off hub?

Postby Burgerman » 03 Sep 2019, 20:40

That must be impossible!

I have the wheels that BM had, the aeroplane nosewheel, but cannot get it off the wheelchair even though the central bolt and all the bolts holding the wheel together have been taken out. Can anybody help with 2 things;


Remove the 6 wheel bolts The wheel now should have absolutely no way to stay on and should drop to the floor. If not then I have no clue whaat you are doing there...

Put 6 bolts and nuts back in the wheel to hold both halves together. Take to a car tyre shop and tell them to use the beadbreaker. Now unbolt the halves and take the tyre away...
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 03 Sep 2019, 20:56

Applied a lot of pressure to try and remove it. We had already removed the other side no problem. Definitely removed the central bolt and the bolts that hold the wheel together. Even with a post 4 foot long could not remove the wheel.

https://www.youtube.com/watch?v=_LN9TXl ... e=youtu.be
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 03 Sep 2019, 21:02

I do remember right, don't I, that those wheels split? It's been a long time.
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Re: Tyre off wheels, wheel off hub?

Postby hank » 03 Sep 2019, 21:06

Are you trying to pull the hub off the motor shaft with the wheel
at the same time.
The wheels split in two halves.
You should be able to pull the wheel off the hubs with 6 screws removed only
as Burgerman said easy. :problem: czy
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 03 Sep 2019, 21:21

hank wrote:Are you trying to pull the hub off the motor shaft with the wheel
at the same time.
The wheels split in two halves.
You should be able to pull the wheel off the hubs with 6 screws removed only
as Burgerman said easy. :problem: czy

That's how I remembered it, the wheel splits.

I already have the other side off the hub and the wheelchair. Even when the other wheel is off, the wheel isn't splitting. I'll have another look tomorrow. Unfortunately I don't have any tire irons, have been using a 12 inch flat screwdriver so far, but I don't want to ruin the tyre as it's only got a puncture.
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Re: Tyre off wheels, wheel off hub?

Postby flagman1776 » 03 Sep 2019, 21:27

Might the output adapter be machined a very tight fit to the rear wheel half? Now locked by corrosion. Try some penetrating spray from behind the wheel. Was anti-sieze used during assembly?
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Re: Tyre off wheels, wheel off hub?

Postby steves1977uk » 03 Sep 2019, 21:35

I would never try and force the wheel off, not unless you want to risk breaking the output shaft on the motor. Take a closer look and see what's stopping it from being removed.

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Re: Tyre off wheels, wheel off hub?

Postby flagman1776 » 04 Sep 2019, 18:53

I agree. Levering is a twisting force. If anything, it needs a straight off pull. But using force, you risk damages... to the motor or the wheel. You successfully disassembled the other side so you know which bolt does what.
Is their mud or debris locking it in place from the inside? I would try a penetrating lubricant first. PB Blaster or similar.

A straight off pull might be attempted by building a puller. A thick plate drilled to match the wheel assembly bolts and a center bolt which when screwed through would bear directly on the axle end. I''d want to install a thread protector in the center bolt hole. We used to pull bronze propellers... frequently salt corroded in place. We'd tension a puller then use a light hammer to tap the hub, to set up a resonance. Typically the parts would suddenly let go, pieces flying.
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Re: Tyre off wheels, wheel off hub?

Postby Scooterman » 05 Sep 2019, 21:37

How about over inflating the tyre while maybe tapping around the perimeter of the wheel rim with a tap hammer :hammer. Would that not cause the two halves to suddenly split apart with a BANG!

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Re: Tyre off wheels, wheel off hub?

Postby Burgerman » 05 Sep 2019, 21:59

Seems to me that someone made the hub wrong and forced the wheel on with the bolts. Now you cant get it off. Forced onto badly drilled studs or badly fitting hub centre.
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Re: Tyre off wheels, wheel off hub?

Postby steves1977uk » 05 Sep 2019, 22:24

It was probably put on by some bodger who force it on. :roll: Even over-inflating the innertube wouldn't guarantee the rims splitting apart.

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Re: Tyre off wheels, wheel off hub?

Postby flagman1776 » 05 Sep 2019, 22:36

I can't seem to find BM's pictures showing the Hegar tubeless light aircraft wheel. OR the adapter to the motor output shaft. The adapter must be larger than the center hole and must have raised center circle which the wheel indexes on. It might have been too tight and been forced on as BM suggests OR corroded in place as rust expands the base material. The wheel itself is aluminum alloy.

https://www.hegar4.com/zc150/index.php? ... x&cPath=98
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Re: Tyre off wheels, wheel off hub?

Postby Irving » 05 Sep 2019, 22:41

None of which makes sense if you watch the video. There's a lot of movement of the wheel on the shaft, far more than you'd expect if it was stuck on the hub or the studs...
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Re: Tyre off wheels, wheel off hub?

Postby flagman1776 » 05 Sep 2019, 23:32

YES! The wheel is moving all over the place. Is the motor unbolted / stripped from the chassis?
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Re: Tyre off wheels, wheel off hub?

Postby steves1977uk » 06 Sep 2019, 00:15

I noticed that too, but the question remains, why isn't the wheel coming off if it's wobbling all over the place? It even moved the whole chair and it's still not budging! :?

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Re: Tyre off wheels, wheel off hub?

Postby woodygb » 06 Sep 2019, 00:48

Burgerman wrote:Seems to me that someone made the hub wrong and forced the wheel on with the bolts. Now you cant get it off. Forced onto badly drilled studs or badly fitting hub centre.


Agreed.

It looks to me like the rear half of the split rim is stuck on the motor hub and what you see flopping around is just the rims front half retained inside the tyre.

I'd suggest the scientific application of brute force via a wooden block and hammer from behind the stuck rim half and as close to the rim center as possible, rotating the wheel and hub 1/4 turn or more after each blow....it might also be possible to jemmy the rim off with a screwdriver / tire lever combo.
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Re: Tyre off wheels, wheel off hub?

Postby Scooterman » 06 Sep 2019, 06:50

Heat?

Heat the aluminium?
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 10 Sep 2019, 19:10

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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 10 Sep 2019, 19:11

Does anybody remember what the valve stem size is?
Image
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 10 Sep 2019, 19:15

Managed to get the wheel back to this situation;
Image

But the tyre won't inflate as the air just rushes through the gap all the way round. Any tips?

Any advice appreciated, Tremulous Tetra. :-)
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Re: Tyre off wheels, wheel off hub?

Postby rlnguy » 10 Sep 2019, 19:24

a ratcheting cargo strap, around the tire, centered on the terad, when you tighten it, the bead gets pushed out, and a good blast of air should seat it.
Like this:
https://video.search.yahoo.com/search/v ... ction=view

an option is to tie a loop of rope around the center of the tread-then put something like a screwdriver between the rope and the tire and twist the rope loop, several times-same effect as the ratchet strap-as the center of the tire gets squeezed, the bead spreads.
https://video.search.yahoo.com/search/v ... ction=view


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Re: Tyre off wheels, wheel off hub?

Postby flagman1776 » 10 Sep 2019, 19:56

A tire store will remove the valve insert temporarily to seat the bead. I think they use a lube too. Then seat the bead with really high air pressure like 200-300 psi. Time to apply wrap as described to expand tire. Once seated, deflate, bead stays seated. Reinstall valve. pressurize normally.

PS What was the hangup?
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Re: Tyre off wheels, wheel off hub?

Postby duke1 » 10 Sep 2019, 20:21

not that its recomended method but i have seen desperate folk use butane gas and squirted inside the tyre and throw a match at it! its standard roadside fix for lorry tyres,alternatively do as said above and remove the valve and use a big garage compressor the small hobby types are not much use for stubborn tubeless tyres and rims or those fat tyres,good luck
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Re: Tyre off wheels, wheel off hub?

Postby hank » 10 Sep 2019, 20:45

Ratchet straps round centre of tread
Then a good compressor that makes decent pressure quick :dance :thumbup:
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 11 Sep 2019, 12:21

funkykeyboard wrote:Does anybody remember what the valve stem size is?
Image

Any advice appreciated, Tremulous Tetra. :-)
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Re: Tyre off wheels, wheel off hub?

Postby Burgerman » 11 Sep 2019, 12:40

They are the same common valves sold everywhere, as used in most cars, bikes, scooters, etc.

https://www.tirerack.com/tires/tiretech ... techid=208
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Re: Tyre off wheels, wheel off hub?

Postby funkykeyboard » 14 Sep 2019, 22:53

TYBM
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