MTFCA Forum

Has anyone fitted these two there Blockley's inner tubes? are they suitable with the 30 by 3 and half inner tubes? https://www.modeltford.com/item/DC1.aspx

those covers do not screw onto the tube stem

they screw onto the rim nut, which WILL screw onto the tube stem

you need both...look closely at the notes on the Lang's ad

if you have any further questions, call Langs, ask for Steve, and let him assist you in getting exactly what you want and need

picture from Lang's link --
--
picture from Blockley

Read the notes on the Blockley website as well… I recall reading something about not using a bridge washer as the stem is vulcanized into the tube…

The Blockley tube have the more common larger valve stem, not the smaller one which Ford adopted, so those dust covers may not fit. There are plenty of Schraeder nuts and covers which will . My choice would be original Dill covers with the sliding thread that attaches to the smal thread that takes the usual valve cap.

Allan from down under.

Norrie,
I've used the stem covers on my Blockley tires. The covers screw to the stem, not the nut.

It is my choice to use flaps and bridge washers. The flaps prevent the tube from being pushed down into the gap between the "clincher" portion of the tire and the bridge prevents you from pulling the stem down into the space between the "clinchers". My fear was that at 60-65 psi the tube would bulge into the gap and risk unwanted wear or damage. I've driven 4000 miles on these tubes without any problems.

Even though the parts in Langs catalog look similar, none of the are truly correct.

Dan McEachern makes the correct rim nuts.

Some dust covers screw onto the rim washer and some screw directly onto the stem. All of today's metal stem tubes use the larger sized stem not used by Ford. I believe all the reproduction dust covers are made to fit that larger sized stem.

This reproduction cover is an excellent copy of originals I've found at Hershey.

Franks Photo is what I have less the bridge washer. The Nut and Cover Screw onto the Blockley Tube.
Alan In Western Australia

The reproduction dust cap posted by Steve Jelf is an original.

Oldav8tor wrote: ↑

Thu Dec 29, 2022 6:58 pm

Norrie,
I've used the stem covers on my Blockley tires. The covers screw to the stem, not the nut.

It is my choice to use flaps and bridge washers. The flaps prevent the tube from being pushed down into the gap between the "clincher" portion of the tire and the bridge prevents you from pulling the stem down into the space between the "clinchers". My fear was that at 60-65 psi the tube would bulge into the gap and risk unwanted wear or damage. I've driven 4000 miles on these tubes without any problems.

Universal-T-Driver-Tire-on-clincher-rim.jpg

Flaps protect the tube from contact with the rim. Flaps will not form a bridge above the beads creating or maintaining a void. Air pressure from the tube forces the flap into the space. Yes the bridge washer keeps the valve stem base from sitting in this area shown as a "void"

I question the langs depiction of the bridge washer UNDER the flap.(between the flap & tube) I have never seen a tube/flap installed this way. Normally the flap goes over the bridge washer/tube. The flap gets stuffed into position after the tube is in place.

Am I wrong about this??

John

look again

I think you may be misinterpreting Lang's picture

Scott_Conger wrote: ↑

Fri Dec 30, 2022 3:07 pm

John

look again

I think you may be misinterpreting Lang's picture

Langs picture shows the flap against the tube & the bridge washer on top all held together with the lock nut.
Is that right?
I also question Jerry's portrayal of the flap not conforming in the gap between the beads, but creating a bridge & empty gap between the beads.

The flap does indeed get pushed down between the beads, hard against the rim. That is what 60 lbs of pressure will do. I believe the correct installation of the flap does not have it fixed to the tube by the bridge and nut. The tube goes in the tyre and the flap folows, if you have the money to waste on flaps. A rim liner will suffice.

Allan from down under.

Allan wrote: ↑

Fri Dec 30, 2022 5:12 pm

The flap does indeed get pushed down between the beads, hard against the rim. That is what 60 lbs of pressure will do. I believe the correct installation of the flap does not have it fixed to the tube by the bridge and nut. The tube goes in the tyre and the flap folows, if you have the money to waste on flaps. A rim liner will suffice.

Allan from down under.

Thanks Allan, thats the way I thought It went.
A different post spoke of using a rimstrip & the installer had a hard time getting the beads to seat in the rim. I suspect the loose rim strip slid too close to the clinch. I would think gluing the rim strip to the center of the rim would prevent the problem. A vinyl tape would work better than a slipping rim strip. Duct tape works, but makes a gooey mess for the next tube/tire change.
I prefer a rim strip for drop center rims, tape for clinchers & flaps(or a thick inner tube) for split rims.

Hmmm.... my flaps were pretty thick rubber and would not easily be pushed into the gap more than a little bit, even at 65 psi. Regardless, the flaps are a lot smoother than the edges of the clinchers. I have 7500 miles on my T-Drivers and suspect I'll be installing some Blockleys in another year. I'll be looking closely at the condition of the tube when we remove the tires. If it appears as I suspect, I'll continue with the flaps and bridge washer.

I often wondered why the Bridge Washer is shaped the way it is??
It’s a “Bridge” but over what?
Otherwise it just has to be a flat to do it’s intended purpose of sandwiching the Stem to the Tube.
Why does the Tube need to rise that small amount in that spot?
It’s retaining nut does raise the tube slightly buts that’s unavoidable
Alan In Western Australia

You need a bridge so you won't have to Ford troubled waters.

I use rim liners rather than flaps. I cut a 2.5" wide strip from the outer diameter of a junk 13" car inner tube. This strip is a snap fit on a 23" rim and does not shift when fitting the tyre. It also extends a little under the foot of the bead on the tyre. That makes for a more snug fit in the rim bead and makes sure the tube is encased in rubber all round.
These would save you the $265 plus shipping costs for a set of unnecessary flaps.

Allan from down under.