Powerplus or Bust, Eh?

[Shaky Jake]

Wow Kevin, I guess it takes a rip down and attempting the fitment of parts to figure out what the hell a guy has eh? Damn, I always wondered about the lack of a fender skirt on the front but never did it occur to me that the chassis could be earlier. Nice job on hopping the hurdle.

A lot can happen in 99 years, can't it! Don't worry, no original Indian parts were harmed in the process.



Kevin


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[Robert Luland]

Nice work Kevin, I'm really enjoying following your build. Keep banging with that backyard technology, that's what it's all about. Bob L

[Shaky Jake]

Nice work Kevin, I'm really enjoying following your build. Keep banging with that backyard technology, that's what it's all about. Bob L

Thanks Bob. I'm having fun with it. Motorcycle builds are kind of like sex. You look forward to the end because you know it's going to be good, but at the same time you don't want it to be over.



Kevin


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[Shaky Jake]

A question for the forum

A question for the group concerning the teens Indians; does anyone know the size and length of the bolts that fasten the engine plates to the frame, and are they bolts with a head on one side, or studs with nuts on both sides?


Thanks!



Kevin


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[Spacke2speed]

Kevin
I see that nobody answered you question about the mounting hardware for the motor plate to frame.
They are fine thread doubled ended studs. They have straight plated nickel body with the end of the studs are curved and polished nickel. All the motor and frame studs are that way. The nuts are a large hex and thin, also polished nickel. I did not seen any evidence (scaring) from lock washers on any of the motor plates I use to have. I do not know the sizes, but I will look around.
Spacke2speed

[Shaky Jake]

Kevin
I see that nobody answered you question about the mounting hardware for the motor plate to frame.
They are fine thread doubled ended studs. They have straight plated nickel body with the end of the studs are curved and polished nickel. All the motor and frame studs are that way. The nuts are a large hex and thin, also polished nickel. I did not seen any evidence (scaring) from lock washers on any of the motor plates I use to have. I do not know the sizes, but I will look around.
Spacke2speed

Thanks Spacke. That helps. From what I can tell they would have been 7/16 inch, probably 24 threads per inch. You say they were double ended studs which is good, because those are pretty easy to make. If you happen to have a nut it would help to know the wrench size and thickness of them.

Thanks again!


Kevin

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[painterdale]

Hey Kevin! Went out and scraped some crap, I mean patina, off of mine and the nuts on the right side look to be 5/16ths thick and accepted an 11/16ths wrench. Wrench size is right. Thickness is best measurement I could get. Couldn't get to the left side. Hope it helps! Dale

[Shaky Jake]

Hey Kevin! Went out and scraped some crap, I mean patina, off of mine and the nuts on the right side look to be 5/16ths thick and accepted an 11/16ths wrench. Wrench size is right. Thickness is best measurement I could get. Couldn't get to the left side. Hope it helps! Dale

Thanks Dale!


Kevin

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[fciron]

Isn't SAE fine thread 7/16-20?

What standard did Indian use?

[Shaky Jake]

Isn't SAE fine thread 7/16-20?

What standard did Indian use?

Even though SAE was formed around 1905, it hadn't really caught on yet. Indian was using their own standard. Pretty much all of the threaded fasteners were 24 tpi.


Kevin

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[T. Cotten]

.. Pretty much all of the threaded fasteners were 24 tpi....

And the same for H-D for many years,

Since different thread pitches were a matter of swapping gears on an engine lathe, it was easiest to pick just one and leave them.

24 falls in the middle between most "coarse" and "fine" pitches.

....Cotten

[Robert Luland]

Kevin, I make a whole lot of hardware. 90 percent of every fastener I make for a 1930 and down Harley is 24tpi. I have a theory on this but I could be wrong or I could be right. Back in the day they didn't have quick change lathes or screw machines if that's what you would like to call them. Harley and Indian had banks of these lined up. It could take a machinist a good part of a day to change a thread on just one machine. So, why change them? Just make everything in the place 24tpi. I just opened up a 1915 muffler and the thread on the end of the baffle is 1.375-24. I rest my case. Bob L
Sorry about that. Tom posted while I was pecking.

[exeric]

Also, weird thread pitches kept that stuff in-house so you had to go through the factory to get parts.

[Rubone]

For many years almost all the fasteners on Brit stuff was 26TPI and was called BSC threads or British Standard Cycle, different from other British sizing. A simple, compromise thread that worked for most applications.

[Robert Luland]

Also, weird thread pitches kept that stuff in-house so you had to go through the factory to get parts.

Eric the word your looking for Propriety and Harley Davidson was very good at this game. I'm convinced that the factory had four engineers minimum to make sure it stayed that way. Sure Indian was using 24tpi but the factory was damm well bent that you couldn't use them. Neck thread, quill thread and axle thread deliberately undersized as well as gas tank and other screws. Standard flare 37 degrees? Not Harley 29 degrees. Bob L