What is the best Inner tube? Valve stem choices?

  • Joel
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08 Jan 2015 22:54 #28845 by Joel
Joel created the topic: What is the best Inner tube? Valve stem choices?
I decided to get a new set of Firestone 7.50-19 tires for my 1929 Duesenberg, now I need to pick out the proper inner tubes. The last time I had a flat due to a puncture, I decided to buy a new tube, rather than patch the old one. Well the tube I got was a chineese piece of junk, it felt like recycled bubble gum, like the rubber was not properly vulcanized. It lasted about a month and then went flat, so I patched the old tube and put it back in and it has held air for 4 years.

So I don't want to make the same mistake of getting junk tubes. Who sells high quality innertubes these days, and does anyone recommend a specific brand?

Also, what style of valve stem is recommended for an authentic look? Brass? Nickel? Rubber? My spokes are chrome. I think it should have an elbow on it so the open end protrudes out through the spokes for easy access. I have seen pictures on line where some stems have a 90 degree angle, and some have more of a 45 degree angle. Which is appropriate?
All input is appreciated!

Joel

Joel Nystrom
1929 Duesenberg Model J Murphy Convertible Coupe

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  • mikespeed35
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09 Jan 2015 00:02 #28846 by mikespeed35
mikespeed35 replied the topic:
I have been told there are no tubes made in the US any more.
Cordially Mike

Mike Huffman

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  • Bob Roller
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09 Jan 2015 14:26 #28851 by Bob Roller
Bob Roller replied the topic: Valve stems
Being a custom car,I'd think anything that would not leak air would be OK.
Being able to FIND these odd sizes is a minor miracle today.Back in the days when these cars were sold for $600 or less,7:50x19 tires were extinct which explains the 7:50x17 wheels on cars that had the 19's when new.
You might check European sources.I saw a Murphy CC at Auburn a few years ago that had Michelin 7:50x19's,six of them.
If Matt in Germany sees this,maybe he can source out something not made in China.

Bob Roller

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09 Jan 2015 15:43 #28852 by xjn001
xjn001 replied the topic: Tires without tubes
Is it possible to seal the spoke from the inside of the rim? I thought that one of the vintage wheel manufactures can do this. Then no tube needed. The valve stem might be a problem if the hole size is not up to any current valve specs. Just a thought. <!-- s:idea: --><img src="{SMILIES_PATH}/icon_idea.gif" alt=":idea:" title="Idea" /><!-- s:idea: -->

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09 Jan 2015 16:55 #28853 by landmark
landmark replied the topic: Re: Valve stems

Bob Roller wrote: Being a custom car,I'd think anything that would not leak air would be OK.
Being able to FIND these odd sizes is a minor miracle today.Back in the days when these cars were sold for $600 or less,7:50x19 tires were extinct which explains the 7:50x17 wheels on cars that had the 19's when new.
You might check European sources.I saw a Murphy CC at Auburn a few years ago that had Michelin 7:50x19's,six of them.
If Matt in Germany sees this,maybe he can source out something not made in China.

Bob Roller



Hello Joel and Bob,

I haven't bought a new innertube in the last 6 or 7 years, but it looks like there are some similar tube-problems in Germany aswell. China-junk is everywhere!!! <!-- s:? --><img src="{SMILIES_PATH}/icon_confused.gif" alt=":?" title="Confused" /><!-- s:? -->

The problem would be the (today often used) "artificial rubber" material (Butyl-Rubber or IIR). So I can't give any recomendations. Maybe Andreas (61xlch) has more experience with todays tube and is able to recomment a brand.

Farm-machines/-tractors often use innertubes in its tires, so if there is a farm-machine dealership/shop in your area, you could ask there for a good quality tube. I am pretty sure they know good quality. No dealer can allow himself to sell junkstuff (a second time) to a farmer when he wants to stay in business with the farmer <!-- s:wink: --><img src="{SMILIES_PATH}/icon_wink.gif" alt=":wink:" title="Wink" /><!-- s:wink: --> <!-- s8) --><img src="{SMILIES_PATH}/icon_cool.gif" alt="8)" title="Cool" /><!-- s8) -->

In question of "valve-style", I guess that an "elbow-valve" faces more centrifugal force (on a fast spinning wheel) than a "straight" valve -> more friction btw. rim and tube?! -> higher danger of damaging the tube?


Cheers

Matt

Was man besonders gerne tut,
ist selten ganz besonders gut

Wilhelm Busch

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  • mikespeed35
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09 Jan 2015 20:23 #28854 by mikespeed35
mikespeed35 replied the topic:
I have bought tubes from "farm" tire stores and universal tire in PA. Just put one of universal's on a Stevens Duryea but have not driven it yet. The Michelin's are not available in many sizes and are very expensive and very thick. If I have any tires with tubes I can't mount myself they go to the "farm tire store". They no how to mount tube tires and most "regular" tire stores don't.
Cordially Mike

Mike Huffman

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