That one is Redditch-built, the Indian factory didn't get going until a bit later in the 50's.
For the pre-EFI Bullets we're looking at 4 different frames. Allow me to demonstrate using pictures nicked from our hosts' used parts web pages.
1. Early Redditch, where the Indians fitted the long through bolt in later years, there were originally a couple of bits of tubing in roughly a U-shape which met the down post under the seat:
2. Then Redditch came up with a variant featuring cast swinging arm lugs. This is a Clipper frame with a different front engine lug but otherwise similar:
3. Then we have the "new" frame which stated to be fitted on 1956 Redditch Bullets and twins, up until the last Interceptor. A few were shipped to India, but apart from the odd prototype, the Indians never built any. The seat and tinware amidships on these is totally different from the Indian Bullet toolboxes/air filter/battery box.
4. Finally we have the standard Indian Bullet frame, like yours, which anyone who has all but a very early Indian Bullet will recognize, a variant on no. 1, you can see the nut for the long through bolt. The Electra-X and Thunderbird models used the same frame with some different brackets, the EFI Bullet frames (apart from the 535CGT) are outwardly similar.
Does that help for starters?
A.
