I've been bashing my shins on my Carbent high racer's Superman handle bar, since I bought it new in 2009. Progressively added spacers to the riser to raise the bar height, until my forward vision became somewhat blocked. As a result, I stopped riding the bike. A shame, since it's my lightest bike and best hill climber. Purchased a Metaphysic bike with tiller steering in 2016. No shin bashing and full forward vision on that bike. Recently, I started toying with the idea of converting the Carbent to tiller steering. Finally, decided to go ahead and do it. Ordered a Performer tiller assembly from RBR in Pennsylvania for a little over $100. The steerer tube on the bike's carbon fork presented a problem. I expected it to be fabricated of aluminum, but instead it was all carbon with a large minor diameter internal thread. Had to drill the thread out and ream the ID with a Harbor Freight reamer to get an expanding plug star nut to fit the inside of the steerer tube. Was going to leave the steerer tube its original length, so the steering conversion would be reversible, but the steerer tube wall was so thin, decided to cut the steerer tube shorter for safety's sake. Used a 60 mm carbon headset spacer between the headset and steering block. Rode the bike on yesterday's Clown ride to test the conversion. Shallow learning curve, since I'm used to the tiller steering on my Meta bike. Really pleased with the result - no shin bashing, and I can see where I'm going.
 
 

 
Carbent with stock superman bar
 
 

 
Carbent's stock open cockpit
 
 

 
Carbent with tiller steering
 
 

 
Carbent's closed cockpit. Replaced the old ICE headrest with ICE's latest version. Also, installed an ICE tail light mount adapter.
 
 

Quote from JimFPU on Feb 17^th, 2017, 11:01am:

 
Four kids times $256,000, each, to get them to age 18. No can do.    
 
Hey, when are you going to visit and do Kenny's Lancaster Airshow ride with us again?
 
 

 
Jim FPU and Kenny J, post airshow ride.

Quote from Action Lad on Feb 17^th, 2017, 10:29pm:

 
Don't have much performance left to enhance. All I know for sure is my shins feel a lot better.  
 
The tiller assembly presents less area to the air stream than did the open cockpit assembly, but the trade off is that my arms are now exposed to the air stream (but tucked into my sides). With the open cockpit assembly my arms were straight out. Really hard to make a performance comparison. A lot of high performance high and low racers are equipped with tiller steering, so maybe it does provide an aero advantage.

Quote from jayg on Feb 18^th, 2017, 9:22am:
Notably, the venerable NoCom.
(Oh be still, my heart!)

Quote from jrob_bent on Feb 22^nd, 2017, 8:20pm:

 
Jerry,
 
I want to keep the superman assembly for when I sell the Carbent way down the road, and the buyer prefers that type of steering. I do happen to have the original handlebar (A wide Bacchetta bar)  I took off the bike when I replaced it with a wider RANS bar. I would be willing to part with it, but you would still need the other steering components.  

Quote from jrob_bent on Feb 23^rd, 2017, 6:04am:

 
I have a box it will fit in. Just pay the shipping cost and it's yours. PM me your address, if you want it.  
 
The bar has the same reach as the stock Musashi bar, but is  is 65 mm narrower. Could be a leg interference problem when turning with it installed on your Musashi. The reason I removed it from my Carbent is that I experienced leg interference when I replaced the stock bar end shifters with trigger shifters. I wound up installing a wider RANS bar. That would be an alternative for you, if my Bacchetta bar wouldn't work.  

Quote from jrob_bent on Feb 23^rd, 2017, 9:22pm:

 
OK, see you next Tuesday.

Jay, the handle bars worked out great. Thanks a heap!