Announcement

Collapse
No announcement yet.

741 Fuel Tank Original vs Reproduction Traits: How to Identify Orignals

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • 741 Fuel Tank Original vs Reproduction Traits: How to Identify Orignals

    741 NOS Fuel Tanks JW REF 2.jpg I have a set of NOS 741 fuel tanks on the way, thanks to fellow member, Joe Wensell. This was a valuable opportunity to compare original tank traits with what could possibly be reproduction fuel tank traits. There are many sellers and manufacturers out there selling reproduction 741 fuel tanks and sometimes those tanks are re-sold after use. This makes it very difficult to identify one versus the other. I was hoping to post a couple photos and open the discussion to the group in case any of you have had experience with this before. Indian was known to slightly modify parts from time to time, so I have learned just because you see a different trait on a part, doesn't mean it is reproduction. Sometimes this indicates a different year model or sometimes a running change in the same year production.
    Here are my photos. 741 Fuel Tank Reproduction Traits.jpg
    Above this text is an online set which has 8 grooves and five round spaces. Originals have 7 grooves and four round spaces. On originals however, there is typically one groove which is filled in with added metal or some unknown material. There is also another groove or channel between the front rounded spaces as pointed out by PaulCDF in another similar post when he was helping me identify tank halves. This example found online has no channel between the rounded spaces. However, looking at the NOS set, you can't see one either, but I have often noticed in photographic comparison of original tanks, this feature is sometimes also filed in!
    The trait I think which gives the above tanks away is the rectangular cut in the foremost liner edge (for lack of terminology) which is only something I have seen in reproduction tanks. The NOS sets posted online or in shared photos do not have any cuts in the inner edge material, only the half circle next to the saddle bolt area. For this set, there is also no space in the left side for the wiring slack. However, there only appear to be six grooves. It is also difficult to see in this photo the upper scooped void in the foremost part of the left side of the inner panel.

    Also posted for sale by the same seller, are a less expensive, though apparently original set, though the front bolt mounts have been clipped open for some reason. All other traits in the photos posted by the seller match the NOS set in comparison. Here are some photos of that set.
    741 Fuel Tank Original OH 1.jpg


  • #2
    Here are a couple more.
    741 Fuel Tank Original OH 2.jpg 741 Fuel Tank Original OH 3.jpg
    741 Fuel Tank Original OH Left 6.jpg

    Comment


    • #3
      741 Fuel Tank Original OH 2.jpg 741 NOS Fuel Tanks JW REF 3.jpg In the top and above left photo, the fuel hole grooves match the NOS set, though you have to turn the image around to compare. When you compare the slightly higher priced set, the fuel hole grooves are not pointed in the same direction. This is possibly also another trait of most or many reproduction fuel tanks. The photo to the right is the suspected reproduction tank. First Set.jpg
      In clear comparison, the tank to the right has basically sideways fuel hole grooves and the original tanks do not.
      I would also like to say that the seller of the two tanks appear to be honest in their descriptions and photos.
      Any feedback would be appreciated.
      -JR

      Comment


      • #4
        Is the Junior Scout frame mounting similar but the front tank mount in a close but different location ? Maybe the reason for clipped front mount?

        Comment


        • #5
          I will let you know when I get the set that looks to be original. I just bought them, so I will be able to do a 1/1 comparison and take a photo like Joe did from above to illustrate the inner side panels and position of the bolt fittings.
          -JR
          Last edited by JTR249; 04-19-2025, 06:45 PM.

          Comment


          • #6
            There are so many reproduction tanks on the market, if you want originals you have to look closely at the traits. Here are a few reproduction photos of a set of 741 tanks, raw metal. The suspected reproduction traits I noted above are in these photos.
            -JR 741 Reproduction Fuel Tanks REF.jpg 741 Reproduction Fuel Tanks REF 2.jpg 741 Reproduction Fuel Tanks REF 3.jpg
            Here, you notice in the first photo, the side-ways fuel cap groove and the circle at the bottom is more oval than circular. There is also a noticeable rectangular cut-out on the foremost portion of the tank. In the second photo, there are more grooves than in the original inner side panels. There are eight grooves on both sides, not three and seven as on originals. The wide trough for wiring and the foremost rounded or scooped out portion of the tank is flat on the reproduction tank's left side. Also, as PaulCDF pointed out in another discussion, there are five holes on the oil section of the right side tank.

            Comment


            • #7
              The NOS 741 tanks arrived today. After having a closer look, I was wrong about the circular cut-outs. They are actually more oval and less circular. All the other traits I mentioned, though seem to be consistent with the comparisons and discussions I have had with other AMCA members in trying to learn about these fuel tanks and their design.
              -JR

              Comment


              • #8
                My original 741 oil tank has only four fitting holes in the bottom.
                Centerline for oil cap notches are 11/5 oclock
                Tom

                Comment


                • #9
                  Thanks, Tom. I've seen painted and rusty tanks online in the past with different centerline angles. Makes you wonder if they are repop or repaired.
                  -JR

                  Comment

                  Working...
                  X