636, 646 Wheel Hub Adapter

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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 11 May 2018, 09:13

Not if you have to fit them backwards and have a nut sticking out of the middle. I wouldnt.
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 11 May 2018, 15:46

yeah - i wouldnt want them backwards etc, - i guess i put this to rest then - leave it alone the way it is - unless its broken i wont try to fix it - - the other user who made his stocks rims wider by adding a spacer between two rim halfs - he did a great job - that can be something i can try just to see - i have spare rims -

but i wont be able to do it myself - what would it take to do what he did - maybe half inch wider ? - that would make the tire fit nicer -
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 11 May 2018, 16:07

Not seen your wheel but maybe its easy. Maybe not.
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 11 May 2018, 23:32

While we are talking 636 wheels and tires, my same stock setup measures 25 3/4" wide. I would love to get a tubeless tire that would be slightly taller and wider. I like the look of the 120/70 tires that were pictured. Are there wider wheels with more offset, which can be bolted to the stock hubs? I don't mind adding extra width to the chair.
Thanks
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 11 May 2018, 23:43

None I ever found. However if you cant make an adapter, shirley_hkg can do it aparently.
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 12 May 2018, 00:16

by adding an adapter - wouldnt that alone make the wheel about a inch wider ?

in that case a 2.5 inch rim or 2.75 inch rim with a bit wider tire would work - - at what cost to the width of the chair ? 28 inch wide ?
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 12 May 2018, 00:21

hobie1dog wrote:While we are talking 636 wheels and tires, my same stock setup measures 25 3/4" wide. I would love to get a tubeless tire that would be slightly taller and wider. I like the look of the 120/70 tires that were pictured. Are there wider wheels with more offset, which can be bolted to the stock hubs? I don't mind adding extra width to the chair.
Thanks



if you end up doing it - post some pics - i like the wide tires - but want to keep it at a min. if i can - your chair is the same as mines - size wise etc,
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 12 May 2018, 00:32

Burgerman wrote:None I ever found. However if you cant make an adapter, shirley_hkg can do it aparently.



I wonder if he can post up a drawing for us that I could take to a machine shop?
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 12 May 2018, 01:52

I have no drawing as such, but heres what you need to draw or make. viewtopic.php?f=2&t=7455&start=140#p114267

Scroll/read.

I ordered some laser cut alloy disks. And just used a pillar drill in my bedroom.
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 12 May 2018, 22:00

nice - this may not be the best thing for me to take on - even with shirley making the hub adapter and getting the rims - it may not end up as nice or too wide i believe afterwards - thanks for the facts and whats needed to get it done -

i recall shirley added the rims to his chair etc, but it didnt add any width over the 3.50 x 8 tire he was using before ? i think he went to 10 inch rims - but seems the same width from some pictures i seen a while back
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 13 May 2018, 04:25

Sorry if this has been covered before, but what is the bolt pattern dimensions on the shirley_hk wide rims? Monkey bike rims? I think the stock 636 wheels have a 3 1/4" bolt pattern (4 bolts)
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 13 May 2018, 08:14

90.5mm pcd. 4 bolt. 75mm centre hole.
If you try to convert that to inches you get 3.5629921 inches. Or 3 and 3563/1000 of an inch. Which is why the rest of the world uses decimals and mm. :fencing
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Re: 636, 646 Wheel Hub Adapter

Postby sin85 » 17 May 2018, 14:09

On my Optimus I have 4.25"x 14" rims. Can anyone suggest which tyres I could fit? My current tyre is C166 5.30/4.50-6 (https://www.csttires.com/nl/tire/c166/). These are hard to get in black and Meyra charges fortune for them.
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 17 May 2018, 15:38

The turf tyres I use will fit.
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 17 May 2018, 16:13

Burgerman wrote:The turf tyres I use will fit.



Which tire is that ? i have a chair that uses same tire but 6 inch rim instead - 4.10/3.50 6 - theres another tire i can use on mines also ?
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 17 May 2018, 16:17

15 X 6.00 - 6 TURF...
oR
145/70 - 6 Off road style.

http://www.wheelchairdriver.com/BM-MK3- ... rchair.htm

http://www.wheelchairdriver.com/images- ... rchair.jpg

Both need 6 inch diameter 4 to 5 inch wide rims.
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 17 May 2018, 16:29

oh i see - those are alot larger than mines - OD etc, - wont work for me - but nice tires -
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Re: 636, 646 Wheel Hub Adapter

Postby shirley_hkg » 18 May 2018, 03:29

Sorry to interrupt.

When doing a hub from sketch , you're unleashed from the limitation of the original bolt-plate position .
That is you are free to move the mounting plate in and out , so that you can design to put the new wheel as close to the motor as possible .

You need to determine which tyre and rims ( 2.5'' , 2.75'' , 3.5'' ) you gonna use .
Add it to the side of motor , and you will have a close estimation of the entire width of your chair .

Now you may be unhappy with the centre nut sticking out . Still it can be accomplished by making an aluminum flange shape cover / spacer , with hollow center . Not difficult to make at all. Can also be used as 3mm ..... 10mm spacer betwee hub / rim if you find wheel is to close, simply by changimg its order .
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Re: 636, 646 Wheel Hub Adapter

Postby shirley_hkg » 18 May 2018, 14:22

expresso wrote: -

i recall shirley added the rims to his chair etc, but it didnt add any width over the 3.50 x 8 tire he was using before ? i think he went to 10 inch rims - but seems the same width from some pictures i seen a while back


Want to see my chair again ? drunk2

viewtopic.php?f=2&t=5380&p=82283&hilit=shirley_hkg+tubeless#p82283
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 18 May 2018, 18:57

shirley_hkg wrote:
expresso wrote: -

i recall shirley added the rims to his chair etc, but it didnt add any width over the 3.50 x 8 tire he was using before ? i think he went to 10 inch rims - but seems the same width from some pictures i seen a while back


Want to see my chair again ? drunk2

viewtopic.php?f=2&t=5380&p=82283&hilit=shirley_hkg+tubeless#p82283



nice - i seen that - what size tire did you use - i know its a 10 inch rim tire - is the width the same as stock tire or wider etc, ?

my Goal was to try those rims with tubeless tires - but i dont want to really widen my chair more than it is right now

as it sits now - with stock rims - 3.50 -8 tires - 26.5 wide - which is an inch wider than stock - and i felt that difference - i like the look now with the tires - i was under the impression if using the rims you got but just wider than the stock rims - to stretch the tire a bit and lower the OD maybe ?

with out adding more width to the chair - i may be asking for too much - or making more problems for me later - ?

maybe this was the reason i dropped this a while back and forgot about it - if its too much involved and too wide the chair - i rather not have all the work done for nothing then -

this being if you were able to make the hub for me adapter - get the rims etc, - i just want to be sure what i am getting into before asking you to go out of your way to do it for me -

i hate making decisions that i cant fix myself later you know - its easy for you to make things etc, thats great - :)
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Re: 636, 646 Wheel Hub Adapter

Postby shirley_hkg » 21 May 2018, 02:44

expresso wrote:As it the tire rim sits right now on my chair - its as close as it can be to the motors - i mean its so close that i didnt think it would work but it does - the tires can not go in closer the motor any more.

If i understand you correctly BM - does this mean that if i used the rims from shirley with a hub adapter he may make for me - and use the same 3.50 x 8 tire on a 2.5 rim - this would make my chair even wider than it is right now at 26.5 inches ?

-


OK , no more room to get wheel inwards , means no fatter tyres.

Won't be any wider expected with my rims and hud , than what it is with you . Maybe a bit lower profile too with 2.75'' rims .

3.50-8 tyre on 2.75'' rim seem to be your best candidate . cheers

Is your tyre tubeless ? drunk2
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Re: 636, 646 Wheel Hub Adapter

Postby expresso » 21 May 2018, 15:23

@shirley - No my wheel is not tubeless now its a tube 350-8 on stock rim -

what your saying is i could use a 2.75 inch rim with tubeless tire lower profile - same width as i have now on the chair ? 26.5 wide

what size tire would that be to fit on ur rims -

would the center of the rim be covered up nicely also ?
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Re: 636, 646 Wheel Hub Adapter

Postby shirley_hkg » 23 May 2018, 08:21

Can't find good quality tyre here .

Everything will be meaningless , unless you can get decent 3.50-8 tubeless tyre at your end .
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 23 May 2018, 11:04

3.50 x 8 tubeless, is DURO tyre.
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 26 May 2018, 01:24

If you take a 6061 aluminum disc and machine it for the original bolt pattern, put a new set of studs in with countersunk heads, it should be strong enough correct? When I raced karts, all our wheel hubs were 6061 aluminum. It looks like the stock Quickie steel hub has a center about 1 inch thick which would be how thick a wheel adapter would be.
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 26 May 2018, 01:27

Thats more or less what I did.
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 26 May 2018, 01:42

Looking something like this when you are done:
https://wheeladaptersusa.com/collection ... 2x1-5-25mm
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 26 May 2018, 02:06

viewtopic.php?f=2&t=7455&start=140 Scroll down.

Quite. Heres one I made earlier as they say. That works great for the 3.5j rim with 120/70-8 tyre.
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Re: 636, 646 Wheel Hub Adapter

Postby hobie1dog » 27 May 2018, 18:06

So an aluminum disc wheel adapter 1" thick, would need your 90.5mm bolt pattern (monkey wheels), and a center hole that will go over the Quickie hub post, and have the Quickie hub 4 bolt pattern....ok I missed the dimensions for the Quickie bolt pattern centerline somewhere. I think my son can draw this up on his PC program and then can send it to his machinist for a quote. I bet it will be 3 times the amount of the standard ones.

Burgerman wrote:90.5mm pcd. 4 bolt. 75mm centre hole.
g
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Re: 636, 646 Wheel Hub Adapter

Postby Burgerman » 27 May 2018, 18:13

All the dimensions you need are in mm. Somewhere on that page or thread. But only to suite the 3.5j rims, not the narrower ones. So you will then need the 120/70-8 tubeless tyres too. But yes.

You dont need a machinist. I just ordered some disks cut by laser online, and used a pillar drill in my bedroom.
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