For 20 years or so I've had this throttle assembly in my shop. It was my dear Dad's very own racing throttle that was on his 29 Indian racer! Steve Benson has mounted it on my 39 Indian racer for Wauseon and Ashland..
Now when I twist it, I'll be twisting the same throttle that Dad did 65 years ago. Something cool about that...
I'll need to be careful though. It's a "quick" throttle, meaning it goes from idle to wide open in a quarter of a turn. WFO.