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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  stupid question time..inner tubes!?!
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Author Topic: stupid question time..inner tubes!?!  (Read 1523 times)

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Offline Jt

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stupid question time..inner tubes!?!
« on: October 26, 2007, 09:34 PM »
right then..have fitted some 1.5 tyres to 1.75 tims for sleek looks and am liking it...using 1.75 tubes etc..

what tubes do i use for 1.5 rims, as i'm building 2 sets for so i have options of builds, but i think the 1.75 standard tubes will be too big?

am i right or am i stupid or both? and more besides?

many thanks

Dumb bastard JT!!

Offline lazychubs

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Re: stupid question time..inner tubes!?!
« Reply #1 on: October 26, 2007, 09:55 PM »
im sure they do 1.5 to 1.75 tubes as i got mine from lbs on canvey

Offline Jt

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Re: stupid question time..inner tubes!?!
« Reply #2 on: October 26, 2007, 10:03 PM »
im sure they do 1.5 to 1.75 tubes as i got mine from lbs on canvey
done a search on google and theirs fook all....only 26 x 1.5

so i thought on here..anyone actually running 1.5's on their bikes? if so whats the dealio?

ta

Jt

Offline lazychubs

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Re: stupid question time..inner tubes!?!
« Reply #3 on: October 26, 2007, 10:47 PM »
on the turbolite im running 1'5 comp 3's
but im sure they skinny tubes lol
or 1'75 not blown up to high

SaMAlex

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Re: stupid question time..inner tubes!?!
« Reply #4 on: October 26, 2007, 10:50 PM »
You def used to be able to get 20x1.5 tubes. Racers would put 1.5 tubes in 1.75 tyres cos they were a tiny bit lighter!


Haha, imagine that; going crazy to save a tiny bit of weight. Some strange things went on in the 80s. It would never be like that now!  :2funny:

Offline Jt

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Re: stupid question time..inner tubes!?!
« Reply #5 on: October 26, 2007, 10:55 PM »
always liked the thinner wheel set up on the racers....

i like the 1.5 tyres on a 1.75 rim, but now i've had a good look at the 1.5' rims i reckon the edges are quite thick, and i dont reckon a 1.75 tube will fit proper inside a 1.5 tyre on a 1.5 rim...

better get to the cellar and try....

bollocks.





SaMAlex

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Re: stupid question time..inner tubes!?!
« Reply #6 on: October 26, 2007, 11:03 PM »
bah, it will work fine.

Ive also heard of people using 20" tubes in 24" rims cos they are lighter.

I used to put two 20x1.75 TYRES on one wheel and cram a 20x1.75 tube in there and it was always fine.

If you inflate an innter tube outside the tyre they go massive. It will take, just get it in there and pump it up.

theRuler

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Re: stupid question time..inner tubes!?!
« Reply #7 on: October 27, 2007, 10:01 AM »
you can run mtb tubes stuffed in bmx tyres too, if you are desperate

i remember the multiple tyres thing too in the nineties

my wheels musta weighed about 10 pounds

Offline Jt

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Re: stupid question time..inner tubes!?!
« Reply #8 on: October 27, 2007, 10:05 AM »
cheers chaps

thesku11s

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Re: stupid question time..inner tubes!?!
« Reply #9 on: October 28, 2007, 11:17 PM »
bah, it will work fine.

Ive also heard of people using 20" tubes in 24" rims cos they are lighter.

I used to put two 20x1.75 TYRES on one wheel and cram a 20x1.75 tube in there and it was always fine.

If you inflate an innter tube outside the tyre they go massive. It will take, just get it in there and pump it up.

multiple tyres?

you used to ride with two tyres on one wheel?

how would that work?

theRuler

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Re: stupid question time..inner tubes!?!
« Reply #10 on: October 29, 2007, 10:50 AM »
stuff one tyre inside of the other

i also used to cut up old tubes (well trim off the valve bit) and put them inside the tyre

helped stop pinch flats

SaMAlex

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Re: stupid question time..inner tubes!?!
« Reply #11 on: October 29, 2007, 10:59 AM »
bah, it will work fine.

Ive also heard of people using 20" tubes in 24" rims cos they are lighter.

I used to put two 20x1.75 TYRES on one wheel and cram a 20x1.75 tube in there and it was always fine.

If you inflate an innter tube outside the tyre they go massive. It will take, just get it in there and pump it up.

multiple tyres?

you used to ride with two tyres on one wheel?

how would that work?

Yep, 2 tyres on one wheel ..... No, it didnt work that well! ha ha.

It helped stop pinch flats, but also most tyres had crap sidewalls and a few grinds would soon expose the tube.

If the inner tyre was knobbly then there were little pockets that would never get to pressure. This meant that even with a very high pressure in the tube, the bike still rode like it had flat tyres. Add that to the amount the bikes weighed in the 90s!

It worked better with a worn out inner tyre, and also it helped if you cut off the bead from the inside one.

Things got much better when Primo came out with the V-monsters, a tyre that was tuff enough to use just the one.


The other week I took some araya aeros off a bike that had been untouched for a few years. The front tyre came off easy, like they usually do on aero rims. The rear one took a bit more to get it off, and it turned out that there were 2 tyres on the rear. The inside one was a totally usable Blue Tioga Comp4.

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  stupid question time..inner tubes!?!
 

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