Jive/Salsa R2 mixture

[Burgerman]

Does it also say tubeless on the side? It may not as its a different size.

Yours may be genuine too! Mine may be fake...

[expresso]

Does it also say tubeless on the side? It may not as its a different size.

Yours may be genuine too! Mine may be fake...

i will check later - mines is 3.50 - 8

[expresso]

heres my tire - it dosnt say anything on the side - either tubeless or tube -

its close to a year with the tire - i got used to them quickly - almost changed back at first but not cant see going back to the thinner tires - even if black - i have a pair of stock in black - same as the grey it came with - as a last resort if i have to -

[snaker]

No image?

Here is the image
https://photos.app.goo.gl/6yO7b1y3lZjbW1yC3

I feel uncomfortable in sitting, especially when moving down slopes. I think that's because the seat is too forwards. Can you help me to check if the seat in the above pic is really too forwards and needs to be moved backwards? I also want to fit a center footrest to reduce the chair's length. This job might require the seat moved backwards too.

[Burgerman]

Seriously only you can decide. Its easier to get a general view with a side on seated image. But its all a compromise that only you can decide what you prefer.

That image seems to show a seat that is in about the right place but legs stretched way out ahead.

[shirley_hkg]

I ordered a set of Duro tubeless 120/70 - 8, an hour back. Of course it could be the rims? But thats unlikely. Its easy to get dimensions right in alloy! I am going to measure them.

On the plus side I can tell you that its possible to drive even with the tyre deflated and off the rim. I went outside to find out. JUST! And its not easy.

Hope it's not the rim. Did you check the valve too ? Some poor quality ones can't hold air at low psi .

[Burgerman]

It should not be possible to push tyre off rim regardless even if deflated. I suspect the tyre isnt legitimate...

[shirley_hkg]

BM, my chair is like in the below pic. Its seat can be moved backwards about 8cm. Should I move it as far as possible? Or is there a formula to calculate the right position?

The correct and easy way is to find out the weight distribution , 25/75 is nice , 20/80 is good for user with good handling ability say leaning forward to go up inclines .

Most of the recycle shops here have roll-in scale . I just ask and roll on it to get the readings . Easy .

Mine is 22/78 .

[shirley_hkg]

It should not be possible to push tyre off rim regardless even if deflated. I suspect the tyre isnt legitimate...

YES . It should be real tight . We usually need some leverage to push the bred out , when change tyres .

[Burgerman]

Most stock chairs are around 50/50... And so useless and dont steer. Give or take 10.

[Burgerman]

YES . It should be real tight . We usually need some leverage to push the bred out , when change tyres .

These tyres can be pushed over the raised part with a thumb... So either tyre or wheel is out of spec. I suspect the tyre. If these tyres are used on this wheel, with tyre sealer in, the rim can spin inside the tyre at 20psi as you try to turn. And at 10 psi you cant drive!

So I am rather hoping the Duro tyres are going to fit correctly to the rims. The alternative is wash out the sealer, till rim/tyre is clean and fit tubes. Which I would rather not do!

[hank]

Hopefully your new Duro tyres do the trick.

[Burgerman]

They will. Meanwhile I have to put 35 psi in for a secure fit. And it doesent fill me with confidence!

[Burgerman]

Well they work at higher pressures, no problems for a couple of days.

But now my Duro 120/70 tyres are here and they really are a much tighter fit to the tubeless bead.

[shirley_hkg]

[Burgerman]

AND i didnt like how the centre caps were held on with two screws.

So I made a new centre disk in stainless 304 (by calling lasermaster and ordering it! 74.5 x 1.5mm stainless https://www.lasermaster.co.uk/metal-laser-cutting ) and locked it in with the load spreading washers.

[hank]

Now that setup on wheel centres does look well.

[Burgerman]

Theres 2 sorts of work. Goodwork. And badwork. I like to do goodwork Hate a half done a job!

No centre, and rust prone hex bolts would "work" equally well. (badwork). But would bug me indefinitely!

[shirley_hkg]

You're really generous when it comes to quality, aren't you ?

That load spreading washer is a craftmanship .

[Burgerman]

Ebay! But it better look finished. And neater to have them hold the centre disk too. And of course the disk is stainless steel! It actually looks better in real life than a photo with flash. All really well finished.

I have the other 2 wheels with the duro tyres fitted. Will swap when I get a carer here. Still only getting 2 hours per day off my bed...
That laser cutting company is super accurate and 2 day delivered! My favorite company at the moment.
Take a look at their rapid online ordering page!

Fibre optic super accurate cutting. https://www.lasermaster.co.uk/metal-laser-cutting

Need a steel, alloy, or stainless steel footplate? Or any other part? Cut, folded, delivered 48 hours!
Wheel adapters? Easy!
E.g I am about to make a new better swing away that positions the joystick correctly, and has zero free play, so solid rigid in use. No need to cut or drill parts! Up to 12mm thick.

[Scooterman]

Theres 2 sorts of work. Goodwork. And badwork. I like to do goodwork Hate a half done a job!

No centre, and rust prone hex bolts would "work" equally well. (badwork). But would bug me indefinitely!

It does look nice. I've never heard of load spreading washers before. Did you get them made or did you buy them like that?

[Burgerman]

EBay...

For allen screws
https://www.ebay.co.uk/sch/i.html?_from ... s&_sacat=0

Also, slimmer, allen countersunk washers alloy if you do a quick search. In steel, alloy, coloured, and in titanium if you want!

[Scooterman]

Wow! I will remember that now if I need some in the future. I’ve also bookmarked that laser cutting service you used.

[Burgerman]

Basically I buy everything on ebay!
Except a few things they dont have... Some tyres, some rims or other stuff from china or USA, maybe speciaist chair parts or controller parts.

[Burgerman]

Except these tyres. Bought in belgium. Delivered 2 days!

These are a much tighter fit to the tubeless rim. These are very high quality and tough tyres for motorway speeds. And are designed for racing and so the rubber goes all sticky if you get them hot! That wont happen in a chair! Fitted these to the 2nd set of rims I bought from Shirley. I got 4 because I may need a spare, and £9 each!

These tyres are 18mm bigger diameter and 6mm narrower than the other set. But they are harder to get off the bead after inflation so safer if you want to run really low pressures. Both types are fine at 20psi or higher. Been testing. Down to 10 both types, they are OK. So 20 is very secure. running at the recommended 36psi they are super safe. I think I had a leaking valve core before, that let one tyre go to a real low pressure. Its hard to tell because the sidewalls are stiffer than mobility sized tyes. So you cant easily tell its deflated a lot.

Existing...
download/file.php?id=7743&mode=view

[expresso]

nice - i guess the ones i have and using are for Tubes - if i wanted to keep the same size as a 350-8 - i would need 120/70 tire ? what is the link for that tire - model etc, - curious for when i need to replace mines -

thanks

[Scooterman]

£9 each!

Them tyres were £9 each or am I reading your msg wrong. They can’t be £9 each. Or were the rims £9 each that’s ridiculously cheap an all

[Burgerman]

The rims are 9 uk pounds on the chinese version of ebay... Shipped by shirley to me.

Those tyres are 50 uk pounds!
Each!
But are very strong, tubeless, high quality scooter race tyres. You get what you pay for in this case. Good construction, radial, and proper rubber with steel banding on beads. You wouldnt trust your life at 80mph on a bend with cheap mobility/kenda/chinese copy tyres!

[Scooterman]

The rims are 9 uk pounds on the chinese version of ebay... Shipped by shirley to me.

Those tyres are 50 uk pounds!
Each!
But are very strong, tubeless, high quality scooter race tyres. You get what you pay for in this case. Good construction, radial, and proper rubber with steel banding on beads. You wouldnt trust your life at 80mph on a bend with cheap mobility/kenda/chinese copy tyres!

Ah I see. I pay 50 quid for a pair of 24x1 schwalbe man wc tyres and there’s a lot more rubber on them there tyres of yours. Re the rims and Shirley. Without wishing to appear nosey, is Shirley someone you know living china?

[Burgerman]

Expresso, I think this is going to be another thing thats hard to find in the US.

Try searching for:
Heidenau K75 120/70-8
or
Duro Or Kitaco 120/70-8

Both are the same diameter as what you have now actually a fraction less. But are low profile and so wider. You need the 3.5J wide rims for these - very cheap. From that chinese auction site or if shirley will ship them too you even better. If you ask him nicely! But right now hes still in 2017 and drunk.

If you want to fit the same size as you have now, those are available in 3.50 8 as well, and are on one of my chairs. http://www.wheelchairdriver.com/images- ... r-1024.jpg and in this case with a cheap steel tubeless rim.