What is it?

[onanparts]

Related to RE. But... I think this is a real stumper. Have at it.

[ClassicCrazy]

Looks like an expansion joint of some type - and the spring must be in there to keep the joint pushed tight against a flange ?. Something for solar hot water ?

[Halfcrazy]

the geared wheel is to adjust spring pressure I got that far

[ClassicCrazy]

There is that slot on the other end which look like it mounts on something and the way that is formed it doesn't look like it actually carries any fluid in it.

Larry

[onanparts]

the geared wheel is to adjust spring pressure I got that far

Show off!  On the right track, gotta give ya credit for that!

[ClassicCrazy]

You are right Ryan - that does look geared now that I look at it again. The way that is bent and slotted at the other end it must push something  like a valve ? or damper ?

[mike90045]

speed/power governor adjustment of some sort ?  The forked end and the adjustment end.  Must be new, no grease on it.

[onanparts]

speed/power governor adjustment of some sort ?  The forked end and the adjustment end.  Must be new, no grease on it.

Halfcrazy opened the door and Mike stepped on through it.. A double heaping helping of nothing for the both of you!

It's a governor linkage rod for a 12.5 KW onan genset.

[onanparts]

This one designed for interstellar faster-than-light, (FTL) travel and safe for use within most worm holes. Time dilation and loop complexities are optional.  It may also be part of an AAD, Antimatter Annihilation Drive but not likely as the storing of Antimatter is a real pain and very dangerous! 

[mike90045]

high voltage flyback transformer, and maybe a voltage doubler circuit with it.

Odd, no large caps visible, no high amp wiring.  hard to figure the end use, not high enough for a CRT.  Maybe for a image multiplier tube, but there are easier ways to get their HV.  the coarse winding on the right looks like it could be for tesla coil, but that would be really HV.   Maybe a high end photo flash, but no big cap for it.

More hints

[vtmaps]

That coarse coil looks like it might be a choke (for lightning) in a power conditioner.  --vtMaps

[boB]

That big coil I ~think~ is a current transformer.  I also think I see what might be a  spark gap inside heat shrink.
Not sure why a current transformer would be doing with a high voltage transformer though ?

Looks like maybe another sensor in there too in-between the coil and HV circuit ?
Temperature  sensor ?

boB

[onanparts]

Input power is 120 VAC @ about 1.3 Amps. Rated around 250 Amps DC or AC.

[Halfcrazy]

I see what looks like a magnetic plunger or solenoid that controls the spark gap?

[onanparts]

Another hint? OK.....

Drug Addict.