Replacement Tyres for 28 x 1 3/8

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Replacement Tyres for 28 x 1 3/8

Postby Typhoon Ken » Sat Apr 20, 2013 6:44 am

G'day All,

Any thoughts on a suitable replacement for 28 x 1 3/8 tyres. I am restoring a Speedwell Super Club Racer and although I can source the correct tyres they are only in a block tread pattern which is not really in keeping with racing tyres so I was looking for a modern 700c x ? to suit. Tubes are ok I have some to suit with Woods Valves which are more in keeping with the era (circa 1940s).

Cheers,

Ken
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by BNA » Sat Apr 20, 2013 6:57 am

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Re: Replacement Tyres for 28 x 1 3/8

Postby ldrcycles » Sat Apr 20, 2013 6:57 am

While you could get a 700C tyre to match the overall size (something like 38mm or thereabouts), it wouldn't fit on the rim, going off the ISO or ETRTO numbers (which are a lot easier to understand) 700C uses a 622mm rim, while 28 x 1-3/8 is a 642mm rim.

How about getting the block tread tyres and doing a Burt Munro on them? :)
When man invented the bicycle he reached the peak of his attainments- Elizabeth West.
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Re: Replacement Tyres for 28 x 1 3/8

Postby Typhoon Ken » Sat Apr 20, 2013 7:06 am

Yep I sort of knew as much, I have studied the ETRO chart, I have a couple of sets of the Block Treads so may I will Burt a set.
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Re: Replacement Tyres for 28 x 1 3/8

Postby WyvernRH » Sat Apr 20, 2013 9:55 am

Typhoon Ken wrote:Yep I sort of knew as much, I have studied the ETRO chart, I have a couple of sets of the Block Treads so may I will Burt a set.

Hmm, while I must admit the block tread does not look good to modern eyes perusal of some road racing photos from the 20s-30's in Oz show the tyres used where not too much different. Roads were a lot worse back then!
Whatever, let us know how it goes if you do cut them down. I know Kid Carbine has done this but I reckon I would have to make up a jig to get tyre properly round and smooth.
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Re: Replacement Tyres for 28 x 1 3/8

Postby ldrcycles » Sat Apr 20, 2013 12:19 pm

Or if you wanted to get really brave/stupid, a belt sander... :)
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Re: Replacement Tyres for 28 x 1 3/8

Postby Clydesdale Scot » Sat Apr 20, 2013 8:05 pm

need one of these
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Re: Replacement Tyres for 28 x 1 3/8

Postby WyvernRH » Sat Apr 20, 2013 9:32 pm

Clydesdale Scot wrote:need one of these


YES! That's what I was thinking of! having done a bit of motorcycle racing in the past I remember the tyre company reps cutting our 'rain' tyres with jigs like that (not quite so fancy but..)
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Re: Replacement Tyres for 28 x 1 3/8

Postby Typhoon Ken » Sun Apr 21, 2013 6:27 am

That would be perfect but I might just have to settle on using the tyres as is with the block tread. As Richard pointed out they may be more period correct than I realised.
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