gas tanks.........
 

I know this topic has been discussed ad nauseum, but I am curious at the response it might bring...........

I dont know how to set up a survey, but the questions would be..........

Would one prefer a newly made gas tank or a perfectly cleaned tank?

price points? which yrs preferred, 28-29 or 30-31?

What would one be willing to pay for each?

Just seeing what the true demand would be and again, could this be a cottage industry for someone on the Barn? The legal ramifications could be discussed at a later date.

It may not be feasible, but inquiring minds want to know............

any other questions one can think of on this topic?

Re: gas tanks.........
 

It would be my preference to have a new gas tank, IF it would fit properly and look exactly like the factory tank. Knowing that might be an impossible task, even with new manufacturing methods, I might rather have a good and well cleaned old tank that came off of the car.
Ed

Re: gas tanks.........
 

I think your questions are good, -but maybe a tad vague on providing enough info to have accurate answers. Note my Red above...

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Re: gas tanks.........
 

If your thinking about having Model A gas tanks available and like said as long as they fit good and look like original you would have a money maker. I know a guy that would buy one now as long as the price isn't outrageous.

Re: gas tanks.........
 

Based on what Brent is saying we will probably make do with the old tanks. I dont think the payback is there for the manufacturer.

Re: gas tanks.........
 

so from what youve stated Brent, obvious answer is to rebuild old tanks........

now regarding the seven different tanks, could you elaborate a bit when you have a chance? would all seven be necessary or would it fall back and work on just 3-4 diff tanks?
Obviously the model matters, and so there might be room to alleviate a couple?

so Tom, what price is good and what is outrageous? Stating a rebuilt original?

Re: gas tanks.........
 

old31, yes that seems correct. Dont think a new tank is an option, even at half of what Brent is mentioning.

Re: gas tanks.........
 

Just the potential liability issues for the manufacturer would be daunting. :(

Re: gas tanks.........
 

Gonna try to rattle them off by memory.

1928 with no ribs on integral firewall. 1928 w/ ribs on firewall but with choke rod bracket down under tank. 1928/29 tank with relocated choke rod bracket. 1929 style tank w/ twist gas cap. 1930 tank with Oval speedo. 1930/31 tank with round speedo and steering column support bracket. (-also 1931 tank with round speedo but sans steering column bracket) 1931 tank with fuel valve in engine compartment.

Re: gas tanks.........
 

Not really factual. Many reproduction tanks are made for Ford cars (Model-T, E-V8 years, Mustang, etc.), and there are aftermarket tanks made for many other brand of cars, so it really isn't the liability issue that prevents the Model-A tank being manufactured. It is the lack of ROI.

Re: gas tanks.........
 

Differences aside, the only part that is even close to gas tanks that is available in the top cover that is made for the current production roadster bodies from Brookville. Look at the price for that one part and you can guess what it will take to fabricate the whole thing in any of the different revisions. The original tanks took more that 12 large pressing operations to make the basic sheet metal parts. The inlet, fuel quantity, and outlet bungs plus the brackets and reinforcements are another thing. This hasn't even accounted for the internal baffles. I would guesstimate that it could cost near $1K just to make a basic tank. That could put the overall cost to a customer even higher. If it's not profitable then no company will take the risk. As far as liability is concerned the sky is the limit and I don't mean that in a good way. A person can get a release of liability to repair an old one but an all new part is a different story. It would be safer just to make and sell the sheet metal parts and let the end user be responsible for assembly.

If I had pressing equipment access like Brookville and Mac Hils then I would likely try to design one that could be taken apart for service instead of welding it all together like Ford did. Modern sealants are such that it may be feasible to do it that way with good success. This would allow for future repairs and resealing if needed.

Re: gas tanks.........
 

Brent, great job on naming the 7. so would it be possible to narrow that down to 3-4?

lets think driver, not fine points here. I see what you mean by the speedos, but I am thinking more generically. The liability isnt necessarily of concern, if the producer has nothing to lose........ think LLC and then Trust.

Re: gas tanks.........
 

vintage tin for me! last sentence probably true... aside from an independent's 'labor of love!' ;)

however, Brookville has carved out a nice niche bending new tin to be old tin.

https://encrypted-tbn2.gstatic.com/s...Cu97ejViodIoaG

Re: gas tanks.........
 

About the only way you could narrow them down is to start with the tank that would have the highest request for. I am guessing the 1928-29 Tank that has the choke bracket in upper location would be most needed. Next would be the 1930 tank with the oval speedometer. The 3rd would be a 1931 tank for indented firewall.

The term 'Driver' is something that has ruined this hobby IMO. These cars have always been "drivers" meaning they were originally intended to be driven. Modifying something and then calling it a "Driver" because the modification was done half-assed should not be an accepted for labeling it as a driver. Either manufacture something that is correct, -or don't bother. It is not good for the overall hobby because most cheap parts or modifications fail prematurely which gives the entire hobby a bad reputation. Think about how many potential hobbyists complain that a Model-A won't stop and the steering is junk. The problem is they formed their opinion after being around a piece of junk Model-A and they just do not know what a good Model-A drives like.

The Liability would definitely come into play and should be considered a must, however buy the insurance policy. That insurance premium just needs to be rolled into the costs of production on each tank.

Re: gas tanks.........
 

I would prefer the new tank after going through the Gas Tank Renu process and repaint. Cost would be an issue though.

Re: gas tanks.........
 

It appears that automated sheet metal forming as an alternative to stamping is becoming a reality. The current offerings use a robotic arm holding a spherical tool to progressively deform sheet metal. The process continually tap tap taps the sheet metal while sensors observe its progress and compare it to the computerized model held in memory.
The companies building these machines claim they can form any type of sheet metal. I have no idea what the current limits are, but if 3D printing and CAD-CAM are any indication these machines will get better and less expensive as industries learn how to adapt them to their needs. I picture job shops which will do the forming on contract so each business does not need to own the latest model. If the pipeline is fairly quick (big if) it could reduce the need for inventorying a wide range of parts. Instead they could be “print on demand”. Of course, this currently creates parts, not entire assemblies. So the fuel tank would still need to be welded (or glued) together.
Welcome to the second quarter of the 21st century. Old Henry would resist the whole thing, but Edsel might embrace it.
https://industryinsider.eu/metalwork...g-sheet-metal/

Re: gas tanks.........
 

The OEM tanks were close to 1/16" thickness. The thicker it is, the harder it is to form. The 28/29 had the extra upper firewall piece which would be easier to form than the bottom section that includes the dash face. The baffles are relatively flat so easier to form. I would use draw quality steel if I did it by hand methods. It would be a lot of work and welding to do it that way. Better to repair an original if it's not too rusty.

I don't know much about the robotic method but it would be interesting to know what the limitations would be for such equipment.

Re: gas tanks.........
 

well, this discussion is what I am looking for.

Brent, maybe I should have phrased that differently. Not looking to put garbage on the road, but not thinking fine points either. That is where you come in.

Lets face it, most people are happy with a #2 car and not looking to win at the cost of 1% of 1%. that is what I mean by driver. A #2 car.

Re: gas tanks.........
 

My thoughts are based on previous personal engineering experience relative to component development, manufacture, and automation. The business incentive and the final product market price for making a new replacement gas tank would be based on the size of the market potential and the cost to develop and manufacture a new replacement. Some of the previous posts mention the cost to develop the tooling and fabrication would be substantial to produce a new replacement tank which I concur with. The actual size of the market seeking a gas tank replacement would not be large enough to enable the unit selling price to be offered at a reasonable level.
Many owners of model A's including myself have used the tank sealer approach for resolving tank corrosion related problems. This method has proven to work quite well and is much less expensive when compared to considering a new replacement.

Re: gas tanks.........
 

I can see that advancements in sheet metal forming in the future can lead to
Model A Tanks being reproduced. Maybe I won't see it, but 20-50 years down the road,
our tanks might be shot or rare to find. I see it coming.