Weinmann 27x 1 1/4 rims question
- Thread starter bagpuss
- Start date
Re:
When we got rid of beaded edge tyres about 1900 the British system used inextensible wire bead edges. Size was simplicity itself (where did that go?)
the outside diameter in this case is a nominal 27 inches, the important diameter is 25.5 inches, (27 -1.25-1.25). All British cycle tyres were sized the same way.
So"top to top" less the depth of the tyre twice.
In the 27 x 1 /1/4 size tyres were actually made in slightly different widths.
Keith
When we got rid of beaded edge tyres about 1900 the British system used inextensible wire bead edges. Size was simplicity itself (where did that go?)
the outside diameter in this case is a nominal 27 inches, the important diameter is 25.5 inches, (27 -1.25-1.25). All British cycle tyres were sized the same way.
So"top to top" less the depth of the tyre twice.
In the 27 x 1 /1/4 size tyres were actually made in slightly different widths.
Keith
Martin Rattler
Retro Guru
Re:
I have am running 1 1/8" Contis on unhooked rims on one of my machines so I don't think there should be any problem with this. I hope not anyway as I have just ordered a set to fit to my Weinmann wheeled Hobbs.... no it'll be fine. I did have a nasty blow out yesterday on the Hobbs running on 25mm tyres but I think that this had more to do with the state of the tyres and possibly the age of the tube rather than it being a sizing issue...no, thinking about it I ran these tyres on unhooked Weinmann rims for about a year on another machine with no problem. However it is important that you do not over-inflate the tyres and I generally run them at about 70psi.
I have am running 1 1/8" Contis on unhooked rims on one of my machines so I don't think there should be any problem with this. I hope not anyway as I have just ordered a set to fit to my Weinmann wheeled Hobbs.... no it'll be fine. I did have a nasty blow out yesterday on the Hobbs running on 25mm tyres but I think that this had more to do with the state of the tyres and possibly the age of the tube rather than it being a sizing issue...no, thinking about it I ran these tyres on unhooked Weinmann rims for about a year on another machine with no problem. However it is important that you do not over-inflate the tyres and I generally run them at about 70psi.
Re:
Thank you for the replies gents .
I think i have been putting to much pressure in the tyres {27x 1 1/8 folding specialized turo } .
Blew one off the rim yesterday whilst out . It appears to of failed on its edge beading. It had been in the shed in a box for years . I reckon left folded for so long did not help matters .
When with a right old bang next a tree full of rooks . Caused a real commotion .
Fitted a NOS panaracer on returning home so I will run it at 70psi
Thank you for the replies gents .
I think i have been putting to much pressure in the tyres {27x 1 1/8 folding specialized turo } .
Blew one off the rim yesterday whilst out . It appears to of failed on its edge beading. It had been in the shed in a box for years . I reckon left folded for so long did not help matters .
When with a right old bang next a tree full of rooks . Caused a real commotion .
Fitted a NOS panaracer on returning home so I will run it at 70psi
Boscarn
rBotM Winner
Re:
I have running some Birmalux rims (without beads) fitted with some Panaracer Pasella 27 x 1 1/8” solid bead tyres and have not had any problems at all. I inflate them to 75psi and have done many miles on them. When fitting, a little talc powder on the bead and inner tube helps to centre the tyre, before full inflation
Before the Panaracers, I did use some old 27” specialized tyres, but could feel them slipping. I thought the rubber had hardened and lost grip on the rim.
Warning. Do not use folding tyres on non beaded rims.
I have running some Birmalux rims (without beads) fitted with some Panaracer Pasella 27 x 1 1/8” solid bead tyres and have not had any problems at all. I inflate them to 75psi and have done many miles on them. When fitting, a little talc powder on the bead and inner tube helps to centre the tyre, before full inflation
Before the Panaracers, I did use some old 27” specialized tyres, but could feel them slipping. I thought the rubber had hardened and lost grip on the rim.
Warning. Do not use folding tyres on non beaded rims.
Boscarn
rBotM Winner
Re:
I bought my 1 1/8” Pasellas from here; http://www.ebay.co.uk/itm/271479404465? ... EBIDX%3AIT
The 1 1/8" measures 26.2mm and the 1 1/4" measures 29mm wide.
So far I have had two deliveries from Bikewagon, both with two pair of tyres and have avoided any import duties and taxes.
The 1 1/4" can be found in the UK.
I bought my 1 1/8” Pasellas from here; http://www.ebay.co.uk/itm/271479404465? ... EBIDX%3AIT
The 1 1/8" measures 26.2mm and the 1 1/4" measures 29mm wide.
So far I have had two deliveries from Bikewagon, both with two pair of tyres and have avoided any import duties and taxes.
The 1 1/4" can be found in the UK.
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