Burgerman wrote:http://www.wheelchairdriver.com/board/download/file.php?id=14782&mode=view
If that dog is real its a throwback to the punk era. Does it hafe safety pins etc too?
expresso wrote:i have the same chair - i am using 350-8 tires on the stock rims - you have to do nothing to make it fit and work - only maybe lift the fender up a bit - they are a bit taller OD
this would fit and work - i never used these - i would bet they are better than the stock tires -
https://www.jpcycles.com/product/29966/ ... jIQAvD_BwE
https://www.revzilla.com/motorcycle/shi ... WQQAvD_BwE
i use the same size but mines are street tires -
yeshelp wrote:expresso wrote:i have the same chair - i am using 350-8 tires on the stock rims - you have to do nothing to make it fit and work - only maybe lift the fender up a bit - they are a bit taller OD
this would fit and work - i never used these - i would bet they are better than the stock tires -
https://www.jpcycles.com/product/29966/ ... jIQAvD_BwE
https://www.revzilla.com/motorcycle/shi ... WQQAvD_BwE
those black tires with the dog - those are what i have on my chair - same chair 646se - 350-8 size tire using the stock rim - it fits perfect for me only had to raise the fender - i cant say 100% how the snow tire knobby one i posted a link to will fit on your chair - but the the size is the same 350-8 - it should fit your rim the same way mines did - then you have to see if you need to raise the fender or not and also how close to your chair frame - if it hits - you can add an washer to the wheel - i didnt have to do nothing but raise the fender -
i use the same size but mines are street tires -
hi the black tire where your dog is surely is not good for snow. But the tires that i see when i click the link, the 421 do have decent squace for traction. i like them. Are you sure and certain that they will fit my chaire if i remove the fender? with the same original rim?
it could be a great improvement
Burgerman wrote:Well the two tyres I use in the picture above on my BM2/3 chairs work much better in snow than the narrow 3.00 tyres do. And sand. But you cannot fit those to a stock chair as it will be much too wide. The chair was designed to be narrow so the wider tyres end up at the same width as a stockchair.
On ice they are both useless.
On soft ground in winter any wider tyre helps. I have 120/70-8 low profile tyres on the Salsa, and the Q700R chairs.
I dont do much snow but soft ground/heavy chair needs more tyre width. So my "normal" over the counter lightly modded chairs, such as the Salsa, viewtopic.php?f=2&t=7455&start=600#p122818 (read the first post CAREFULLY since you are looking for a new rear drive chair). This is a sunrise chair 4 years ago now.
And the newer Sunrise Q700R chair I recently bought also has 120/70-8 tyres. Its tech parameters are almost identical to the salsa. Which is why I suggested reading that well. And applying it to any new chair that is rear drive.
Burgerman wrote:Well the two tyres I use in the picture above on my BM2/3 chairs work much better in snow than the narrow 3.00 tyres do. And sand. But you cannot fit those to a stock chair as it will be much too wide. The chair was designed to be narrow so the wider tyres end up at the same width as a .
Burgerman wrote:Every chair is different. Even the same brand/model changes according to prescription form options.
STOCK 3.00 x 8 tyres are Three inches wide, and 3 inches tall (sidewall)
So a 3.50 x 8 tyre is half an inch wider in total overall width. That means its 1/4" wider on the outside. And on the inside. And will be 1/2 inch taller on the bottom, and on the top... So take a look at your chair/tyre and look at the gap.
So you may or may not need to move the mudguard/fender up (or take it off). Look at the gaps. Is there room for 1/2' ich or 12.4mm taller?? And look at the gap on your stock tyre, on the inside between any parts like the motor casing. Is there 1/4" or 6mm gap now? If the answer is yes,in both cases it will fit no problem.
Although be careful as tyres are sized approximately. They call it nominal sizing. So this may be 2 to 3mm out.
expresso wrote:i have the same chair - my 350-8 fit just enough - i didnt have to do anything other than raise my fender
i dont have the same tire you are looking at - so it can be different - mines are smooth tires but dont see why those wont fit -
at the very worse - add the washer - but you may be fine with just the fender raised
i like to hear how they feel to you - at first i was going to try those also - but since its mostly road here - i went with the slick looking smooth tire
swalker wrote:I live where it snows a lot. The average in town is around 180 inches per year, but where I live, we often receive 300 inches.
I have found that the best tires for my Permobil 14 inch drive tires (3.00x8) are the Permobil Mud and Snow tires. They have a bit of tackiness to them that really helps them stick in snow and, to some degree, on ice.
In the US, these can only be purchased from a Durable Medical Equipment (DME) provider. I am in the process of obtaining a pair from NuMotion to replace the worn out tires on my Permobil C500.
These tires wear quickly when driven on bare asphalt. As little as 100 miles of driving on bare asphalt is sufficient to wear them out. Yet, they will go close to 1,000 miles on snow and ice.
They cost me about $100 per pair of tires, though the DME wants to sell the tire and wheel assembly for close to $1,000.
Steve
Burgerman wrote:The 3.50 x 8 tyres will fit, but are 1/4 inch wider each side. So depending on motor/frame and tyre gap you might need some 3 to 6mm spacers or washers.
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