Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Tyre pressure for Dawes Galaxy!?!

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Tyre pressure for Dawes Galaxy!?!

Old 07-16-02, 03:40 PM
  #1  
Brooky
Senior Member
Thread Starter
 
Brooky's Avatar
 
Join Date: Jun 2002
Location: Herts, UK
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Tyre pressure for Dawes Galaxy!?!

Hi,

I've just managed to find an immaculate second hand British Racing Green Dawes Galaxy for 320. Its a little large but I feel I can cope with that.

I've learnt my first lesson "Don't over inflate tyres!!"

The tyre said 70psi 5bar MAX. (Didn't see the max bit though! )

This blew the innertube arround the valve.

What would be an ideal tyre pressure for on the road? :confused:
Brooky is offline  
Old 07-16-02, 03:57 PM
  #2  
ljbike
Senior Member
 
Join Date: Jul 2000
Posts: 1,049
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The pressure embossed on the tyre is the recommended pressure you should use. 70 to 75 pounds air pressure is not excessive for a touring road tire. Many tires are built for 90/100/110/120/150 pounds of pressure. The higher pressure tires are very hard and do not dampen road vibration. Good Touring tyres are in the 70/75 pound range. You could even go to tyres of 90 pounds, but again, the ride would be harsher.

Use quality BUTYL tubes, not latex. Laytex are made for light weight and racing. They're No good for touring or general road use.

Congrats on finding a bike.
__________________
ljbike
ljbike is offline  
Old 07-16-02, 03:59 PM
  #3  
VegasCyclist
suitcase of courage
 
VegasCyclist's Avatar
 
Join Date: Mar 2002
Location: SoCal (ex Las Vegas, NV)
Posts: 1,010
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
well did you inflate it to 70 psi?, and does the rim have rim tape. if it is missing rim tape the inner tube could have simply cut itself on the metal at the high pressure. in which case applying rim tape to the rim may solve this problem and allow you to have a pressure of 70 psi. the tires I have on my road bike run at about 90 psi, and I have had no problems with inner tubes as of yet.
__________________
-VegasCyclist
"Daddy made whiskey and he made it well.... cost two dollars and it burned like hell...."
Register!
VegasCyclist is offline  
Old 07-16-02, 04:14 PM
  #4  
Brooky
Senior Member
Thread Starter
 
Brooky's Avatar
 
Join Date: Jun 2002
Location: Herts, UK
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yes theres rim tape there and it looks brand new. I did inflate to 70 psi and ran into trouble when I took the pump off. (Probably tearing the innertube valve connection?!?)

The valve is Presta i think whatever that means and I tightened the bolt that sits on the wheel rim quite tight. It was quite loose before. I think this may have caused the problem. What do you think? :confused:
Brooky is offline  
Old 07-16-02, 04:22 PM
  #5  
ljbike
Senior Member
 
Join Date: Jul 2000
Posts: 1,049
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Presta valves are skinny and more common in Europe. In the States the Shrader (fat valve) are the most common. That nut that holds the Presta valve shouldn't be tightened until the tyre and tube are inflated to the proper pressure.
Twisting the pump head straight on and straight off should not put any undo stress on the valve or the tube.

You might want to check the hole in the rim to see if it has any burrs which might cut the tube. If so, remove them.
__________________
ljbike
ljbike is offline  
Old 07-16-02, 04:23 PM
  #6  
Brooky
Senior Member
Thread Starter
 
Brooky's Avatar
 
Join Date: Jun 2002
Location: Herts, UK
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Righto thanks!! I'll do that.
Brooky is offline  
Old 07-16-02, 07:07 PM
  #7  
John E
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 19,368

Bikes: 1959 & 1960 Capo; 1982 Bianchi; 1988 Schwinn KOM-10;

Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 687 Post(s)
Liked 11 Times in 11 Posts
I think you are using a Presta valve in a Schraeder-drilled rim. Try putting a thin metal washer over the valve stem, to keep the tube from bulging through the rim. The inner diameter of the washer should just barely exceed the outer diameter of the valve stem, and of course the outer diameter should slightly exceed that of the hole in the rim.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324
Capo: 1960 Sieger (2), S/N 42624, 42597
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MiloFrance
Classic & Vintage
2
09-25-14 11:50 AM
spectastic
Bicycle Mechanics
0
09-24-13 10:33 PM
alwaysbefirst
Road Cycling
1
07-25-05 03:26 PM
musketman
Mountain Biking
2
04-02-05 09:55 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.