RE: [CR]Storage of gum brake hoods - low oxygen environment - rubber

Example: Framebuilders:Pino Morroni
Date: Sun, 17 Aug 2003 10:27:21 -0700
From: "Greg & Darlene Pitman" <>
Subject: RE: [CR]Storage of gum brake hoods - low oxygen environment - rubber

A couple of months ago, I bought some Modolo gum hoods from Jan Johnson on E-Bay. Since I didn't plan on using these for a while, here is what I tried for preservation. I put each pair of hoods on a FoodSaver bag and stuck them on the FoodSaver. For those of you who don't use this device, it evacuates and heat seals the bag. The bags are made to be airtight. I then put the bags away in a dark drawer. Now I've never tried this before with gum hoods. My only concern is that it so completely sucks down the bag, that the hoods flatten down pretty small. I won't know until I unseal one of the bags(in a couple of weeks) whether the hoods are deformed by the complete removal of air. It works extremely well on most food, but not on items that hold a lot of air (donuts, bread etc.).

Greg Pitman Rancho Cucamonga, CA

-------original messages--------

Subject: RE: [CR]Storage of gum brake hoods - low oxygen environment - rubber Precedence: list Message: 17

This is my first contribution to the list and I hope it helps.

This is very easy to do correctly and should come easy to all who ride = bikes and have tire inner tubes around.

Nitrogen is what you want to use. Forget about dry ice. You won't get a = good seal and it won't work as described. Heres what you do:

Get yourself a old car inner tube with a Schrader valve on it. Cut out a Schrader valve from another source tube and cut and Patch in the 2nd Schrader valve in your first inner tube so you have two Schrader valves = on a car inner tube.=20

Now car inner tubes are quite large and you will make an incision big = enough to insert and remove the brake hoods into the tube.=20

With the brake hoods inserted you can now seal the tube with a big = patch.=20

Now you have a car inner tube with two valves and your brake hoods = inside.=20

Go to your local welding/gas supply and buy a couple small of the small charges that look like CO2 BB gun canisters but are Nitrogen. Look = similar to the CO2 charges used to inflate your tires. =20

With a helper manning one valve to allow the air inside the tube to = escape you attach the inflator with N2O canister and inflate the tube while = your buddy lets the air out. When he starts getting N2o he lets the valve = stem up and the tire inflates with 100% Nitrogen inside. No air at all thus no degradation.=20


Scott Dapson Devil Dog

-----Original Message----- From:] On Behalf Of Raoul =




> David
> This is interesting, how do create the low oxygen micro-climate ?
> Wayne Jolly (An amazing August morning) Toronto, Canada
> ----- Original Message -----
> From: "David Hallam" <>
> To: "Wayne Davidson" <>

> Sent: Sunday, August 17, 2003 2:42 AM
> Subject: Re: [CR]storage of gum brake hoods......

> > In a low temp low oxygen environment.
> > /dlh.
> >
> > On Sun, 2003-08-17 at 08:30, Wayne Davidson wrote:

> > > Hi all, what is the best method of storage for NOS gum brake
> > > hoods?......regards wayne davidson Invers NZ......