Just like it says.....I need to find 2 bolts for my 65 BSA rear sprocket on the Bantam. The stock bolts are 7/32 x 26 TPI CEI / BSC 5/8" long. My sprocket is damaged, so I need to go another 3/8s or so into good threads to hold the sprocket. 1" long or more, I'll cut as needed.
Used bolts are certainly fine. The stockers are reduced heads, but I can reduce "regular" size head bolts. I've got time and a grinding wheel!
Just to repeat....I need them 1" long. not stock length
any hardware place that I fine, skips right from 3/16 to 1/4. Same with my tap/die sets. 7/32 is a real oddball. I just ordered a tap and die from the UK from "Tracy Tools LTD" . I'll make the bolts if I can't find them.
Carrying on from Ed's suggestion, the other possibility is to re-tap the holes to 6mm x 1 ... which is only about 0.016" larger in diameter from the original, and the thread pitch is within 0.4mm. New M6 x 25mm bolts will also be easy to find at a local store.
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Found some ! Yeah too late ...sorry . And the listing just say longer then stock ... but not how much longer . Scaling the pic , they look roughly about an inch , maybe longer .
I went out and measured 2 of the 8 bolts on my mountain cub rear sprocket. They appear to be the same as used on the bantam. Mine are 7/32 Shank x 3/8 threaded and 5/8 effective length ... reduced head (1/8 ww spanner) ... oh no , tiny bicycle bolts Holding on the rear sprocket. !
those should work. Heres' the issue. the shorter (stock) ones, are 5/8" overall. I have 2 that have broken out the side. One, was cracked and I could weld it. the other, the piece is long gone. There is more hub available, just need to tap it, and put in the longer bolt. True, not alot of purchase for the one with the missing side....but its better than nothing.
The casting is no doubt full of grease ... but id see if you could find someone to tig- fill the missing metal and retap with longer bolts ? It's going to be a better job of it if the bolt clamps against metal .
I would try a high content Silver solder myself , and do it at home , but dont tell anyone
Your hub looks suspiciously like the hub on my 67 mountain cub . Ive never had it apart or needed to check for parts numbers or cross reference with other models .