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  #1  
Old 31 May 2011
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120/90-17 Heavy Duty Inner Tubes

Hi,
Do 120/90-17 Heavy Duty Inner Tubes actually exist ?

Im in the UK, please could someone attach a link where I can buy one of these.

Thanks
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  #2  
Old 31 May 2011
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Try this link, 4mm should be heavy enough.

Last edited by Huan; 1 Jun 2011 at 11:10.
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Old 31 May 2011
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Huan, you got me going in a loop. I click on the link and go back this message .

Thanks for the reply though, please reattach.

Cheers
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Old 1 Jun 2011
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Yeah, they definitely do exist but are hard to find. Reason is apparently that 17" is a tyre size for road bikes and road bikes seldom need heavy duty (that's what the guys in the shop told me). The only place where I found and recently bought one is on ebay, so have a look there for 'Heavy Duty Tubes'.
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Old 1 Jun 2011
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Fixed the link.
I wouldn't agree with the guys in that shop, some offroad bikes have had 17" rears since the mid-80s or before. You could always get heavy duty tubes in 17" but not all shops have them or know how to get them.
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Old 1 Jun 2011
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Yeah, I heard the same story from the chaps Ive called.
Ive checked out ebay etc.. using a many different strings. Good to know its a common issue though and not just me missing something.

Ill resume the hunt, however if anyone knows a site I can get these, please be so kind .
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Old 1 Jun 2011
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Check the link above ^^ I fixed it to show the correct site.
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Old 1 Jun 2011
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Quote:
Originally Posted by BikingMarco View Post
Yeah, they definitely do exist but are hard to find. Reason is apparently that 17" is a tyre size for road bikes and road bikes seldom need heavy duty (that's what the guys in the shop told me). The only place where I found and recently bought one is on ebay, so have a look there for 'Heavy Duty Tubes'.

Ever had a close look at the wheels on a postie bike Marco?
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Old 1 Jun 2011
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Huan, just called them.
They only have the 1.5mm in the necessary size, but thanks.

http://ssl.delti.com/cgi-bin/MySchlauch.pl

.....and so the search continues
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Old 1 Jun 2011
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They have a 2.5-3mm version for a 130/70 -17
I can't believe that it would be that different from a 120/90 -17 tube
Brand: Heidenau
Item code no.: 17F Cr. EAN: 4027694230298
Type of valve: 34 G Centered metal valve
Tube type: Cross tube
Wall thickness: ca. 2.5 - 3 mm S-11230029 only £ 23.10
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  #11  
Old 2 Jun 2011
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Quote:
Originally Posted by farqhuar View Post
Ever had a close look at the wheels on a postie bike Marco?
Yeah, I know. There's a lot of adventure touring bikes with 17" rear wheels out there, my DR650 included. But try to tell that the guys in the shops...

I found the old ebay listing where I bought my tube from (link), they sell it for AU$23.
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Old 2 Jun 2011
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Cheers guys !

2 questions....

- Will 130/70-17 fit a 120/90-17 tyre safely ?

- Marco, do you recommend those inner tubes ? (Ive emailed the chaps in Aus to see if they will ship to the UK)
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Old 2 Jun 2011
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Quote:
Originally Posted by Trichelia View Post
Cheers guys !

2 questions....

- Will 130/70-17 fit a 120/90-17 tyre safely ?

- Marco, do you recommend those inner tubes ? (Ive emailed the chaps in Aus to see if they will ship to the UK)
Will fit fine......

Iv used kinds of crazy sizes and never had an issue.. Sometimes you just have to use what you can find while on the road.

You can use 18" in a 17" tyre too but only do it if you have to..
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  #14  
Old 2 Jun 2011
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You can use a 21" tube in a rear if you have to as well!
How different can it be? 70% of 130mm isn't all that different from 90% of 120mm.
Certainly not enough to worry about.
Ever inflated an innertube without a tyre?
See how much they expand?
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  #15  
Old 3 Jun 2011
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As BikingMarco said the Suzuki DR650 uses a 17" rear still.

As long as you fit the tube evenly ie no folds in the rubber you can use a bigger tube, no probs.
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