so I just got this 73 sporty! getting ready to make it my own. some of the things that have been done to it are pretty mickey mouse but can some tell what this is?">
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Speedometer plug.

 

Not speedo...tach cable goes there. Speedo goes to the front wheel.

 

72xlch said it was a speedometer plug, but that is not quite correct.
A 1973 Sporty had the speedo on the front wheel (as far as I know anyway).
The plug you point to is a plug for the hole that the tachometer drive once sat in. The tach is driven off one of the front cylinder cams and it needs a drive piece where the plug is now placed on your bike to connect the tach cable to......pg

 

yup tach plug, i get um confused all the time...............

 

That is the tach drive. Plugged off with a cap on top. Drive appears to still be there. Oh God, do something with that seat. That makes my *** hurt just looking at it. [:@]

 

Cool bike! I'd change a few things, but I'm sure you have plans for it, too. A friend of mine had a Sportster with that profile (except it had a hardtail), and we went for a spirited ride one day in the twisties. He was pushing it in the curves as much as he could, and from behind him, I found out why they call them "drag" pipes. His pipes dragged the road pretty badly every time he went around a tight right-hand curve...

 

Hey thanks guys makes sense! this bike has no tach, no speedo, no front brakes, no turn signals and no mirrors lol. But yes I do have plans for it! a seat who needs a seat real men ride on diamond plate!! lol JK actually its not that bad well for short rides anyway.

I also get some oil spilling out onto the exhuast from a bleeder valve on back of generator you can see it in the pic as well. what causes this and can I fix it?

 

Thats the breather. You are supposed to have a pipe there that runs down below the frame. Ya can even get em in chrome.

 

ah I see so i would take of the nut and add a tube? my exhuast is getting nasty ever time i take a ride