I recently purchased new knobly mountain bike tyres for my off road wheel 
24x2 from my local bike shop and they suggested fitting downhill tubes 
inside
these are thick oversized tubes, that when fully blown up arn't 
overstretched and offer better puncture protection
I also had some more tyres fitted to my spynergie spox as well
but i must say that pushing with the knobbly tyres (despite the greater 
rolling resistance) even on smooth surfaces is far better than the spox with 
smooth tyres on
to the point where I use the off road wheels nearly all the time.

Yoda

Yoda wrote:

>I recently purchased new knobly mountain bike tyres for my off road wheel 
>24x2 from my local bike shop and they suggested fitting downhill tubes 
>inside
>these are thick oversized tubes, that when fully blown up arn't 
>overstretched and offer better puncture protection
>I also had some more tyres fitted to my spynergie spox as well
>but i must say that pushing with the knobbly tyres (despite the greater 
>rolling resistance) even on smooth surfaces is far better than the spox with 
>smooth tyres on
>to the point where I use the off road wheels nearly all the time.
>
>Yoda
>  
>
Hi Yoda,

Do you use a standard (wheelchair) rim or a cycle rim? The reason I ask 
is that last year I asked about such tyres, as I found that cycle tyres 
do not fit wheelchair rims you did kindly give a reply. I did get a 
quote for spoking up a mountain bike rim to my quick release hubs, but 
found the cost prohibitive.

TIA

Mark

>
>
>  
>

"Mark Horton"  wrote in message 
news:fvapji$gb4$1@aioe.org...
> Do you use a standard (wheelchair) rim or a cycle rim? The reason I ask is 
> that last year I asked about such tyres, as I found that cycle tyres do 
> not fit wheelchair rims you did kindly give a reply. I did get a quote for 
> spoking up a mountain bike rim to my quick release hubs, but found the 
> cost prohibitive.
>
> TIA
>
> Mark
I have a set of wide rims from Cyclone (about £200ish that was a couple of 
years ago though) they have offset centres, which makes your wheelchair a 
bit wider but allows for decent tyres
similar to this http://www.wheelchairjunkie.com/offroadwheel.jpg

i looked for the knobbliest tyres i could find and pushing using the side 
knobles and push rim combined (with global leather wet weather gloves) is a 
lot easier than gripping the push rim on my spynergie spox, infact i would 
happily loose the spox in favour of the wider rims, they really are that 
good - i would recommend them to anyone
there is a puncture proof layer that you can put between the inside of the 
tyre and the inner tube, but the shop told me that ultimatly these do lead 
to a puncture doe to them rubbing agains the tube

just seen these on the net too
http://www.wildfirecycles.com/Wheelchair%20wheels%202.jpg
http://www.wildfirecycles.com/fatbikes.html

Yoda

Responding to Yoda...
>
> "Mark Horton"  wrote in message 
> news:fvapji$gb4$1@aioe.org...
>> Do you use a standard (wheelchair) rim or a cycle rim? The reason I ask is 
>> that last year I asked about such tyres, as I found that cycle tyres do 
>> not fit wheelchair rims you did kindly give a reply. I did get a quote for 
>> spoking up a mountain bike rim to my quick release hubs, but found the 
>> cost prohibitive.
>>
>> TIA
>>
>> Mark
> I have a set of wide rims from Cyclone (about £200ish that was a couple of 
> years ago though) they have offset centres, which makes your wheelchair a 
> bit wider but allows for decent tyres
> similar to this http://www.wheelchairjunkie.com/offroadwheel.jpg
>
> i looked for the knobbliest tyres i could find and pushing using the side 
> knobles and push rim combined (with global leather wet weather gloves) is a 
> lot easier than gripping the push rim on my spynergie spox, infact i would 
> happily loose the spox in favour of the wider rims, they really are that 
> good - i would recommend them to anyone
> there is a puncture proof layer that you can put between the inside of the 
> tyre and the inner tube, but the shop told me that ultimatly these do lead 
> to a puncture doe to them rubbing agains the tube
>
> just seen these on the net too
> http://www.wildfirecycles.com/Wheelchair%20wheels%202.jpg
> http://www.wildfirecycles.com/fatbikes.html
>
> Yoda
>

FWIW

For the powerchair, we use old tyres as puncture stoppers. Cut the
sidewalls away (carefully!!!), cut the resulting "hoop" so you can
overlap the ends inside the new type, and line your new tyre with the
old carcass. If you want to be sure about friction punctures with
cheap tubes (its often the material they're made from that causes the
problems), follow up by lining the inside of the new tyre plus old
carcass with something forgiving like gaffer tape (fiddly, but 
worth the effort).

Some of the cheaper Chinese solids for manuals give a ride similar to
a firmly inflated pneumatic, but don't (obviously) get punctures,and
help prevent rim-dinks. (Our experiences tells us to avoid Greentyre
products like the plague BTW.)

Hope this helps some.

-- 
   \===* www.jonestheweb.myby.co.uk *===/
    )8  Data-Pimped by your ISP yet?  8(
      (For clues, search "anti phorm")

Yoda wrote:

>I have a set of wide rims from Cyclone (about £200ish that was a couple of 
>years ago though) they have offset centres, which makes your wheelchair a 
>bit wider but allows for decent tyres
>similar to this http://www.wheelchairjunkie.com/offroadwheel.jpg
>
>i looked for the knobbliest tyres i could find and pushing using the side 
>knobles and push rim combined (with global leather wet weather gloves) is a 
>lot easier than gripping the push rim on my spynergie spox, infact i would 
>happily loose the spox in favour of the wider rims, they really are that 
>good - i would recommend them to anyone
>there is a puncture proof layer that you can put between the inside of the 
>tyre and the inner tube, but the shop told me that ultimatly these do lead 
>to a puncture doe to them rubbing agains the tube
>
>just seen these on the net too
>http://www.wildfirecycles.com/Wheelchair%20wheels%202.jpg
>http://www.wildfirecycles.com/fatbikes.html
>
>Yoda
>
>
>  
>
They definitely look the way to go. I shall be using my next DLA to get 
them. I have heard of a solid inner tube that has the obvious benefits 
of being puncture proof, but has none of the drawbacks of having the 
accelerated wear normally associated with solid tyres (especially 
Greentyres).

Has anyone else heard of these? I have been trying to find a retailer, 
but with no luck.

Mark

"Mark Horton"  wrote in message 
news:fvo6q4$1ci$1@aioe.org...
> Yoda wrote:
>
>>I have a set of wide rims from Cyclone (about £200ish that was a couple of 
>>years ago though) they have offset centres, which makes your wheelchair a 
>>bit wider but allows for decent tyres
>>similar to this http://www.wheelchairjunkie.com/offroadwheel.jpg
>>
>>i looked for the knobbliest tyres i could find and pushing using the side 
>>knobles and push rim combined (with global leather wet weather gloves) is 
>>a lot easier than gripping the push rim on my spynergie spox, infact i 
>>would happily loose the spox in favour of the wider rims, they really are 
>>that good - i would recommend them to anyone
>>there is a puncture proof layer that you can put between the inside of the 
>>tyre and the inner tube, but the shop told me that ultimatly these do lead 
>>to a puncture doe to them rubbing agains the tube
>>
>>just seen these on the net too
>>http://www.wildfirecycles.com/Wheelchair%20wheels%202.jpg
>>http://www.wildfirecycles.com/fatbikes.html
>>
>>Yoda
>>
>>
>>
> They definitely look the way to go. I shall be using my next DLA to get 
> them. I have heard of a solid inner tube that has the obvious benefits of 
> being puncture proof, but has none of the drawbacks of having the 
> accelerated wear normally associated with solid tyres (especially 
> Greentyres).
>
> Has anyone else heard of these? I have been trying to find a retailer, but 
> with no luck.
>
> Mark
>

Take a look at flexel
They supply infill tyres (you have to send wheels
to them and a compound is put in to the tyre
and baked in an oven)
or inserts, which are like solid tubes.
http://www.flexelmobility.co.uk/punctureproofing.htm

Unfortunately, they don't sell to the public.
Also, unless the dealer is ordering in quantity they
are charged a small handling fee, which pushes the
price up considerably.