Restoring a steel Japanese bike from the early 80s I recently picked up a Shogun 2001 touring bike from the early 80s. It's hardly been ridden and has a beautiful double-lugged frame with F&amp;R racks, Al fenders and brazed-on threaded fittings for all of those those. It's an 18-speed with Shimano 600 DX brakes &amp; hubs, Deore front &amp; rear derailleurs &amp; triple crank and some odd Deore pedals (see the pic). It even sported the original tires, w/the Shogun name, which are barely worn. But I have a couple of questions moving forward about bringing her back and upgrading.


I want wider handlebars -- 44cm. Where do I get those? What (stem) clamp size do I need to be looking for? Obviously it's not 38.1mm.
It has natural gum-rubber brake-lever hoods that are deteriorated. I want to replace these. What will work? I don't care about the color; synthetic black rubber hoods are fine.
It has braze-on downtube friction shifters. I want to install bar ends. What, if anything, do I need to be watching out for when I do this? Given that it's a 6-speed, do I have to us old ones, such as a set of Suntour 3090s? Or can I use newer ones that are 9 or 10 speed?
I've never seen pedals (see photo) that attach to the crank arms quite like these. There's a fat bolt spacer between the pedal and the crank arm, and they appear to be held on the back of the crank with a bolt. I don't object to these pedals but I'd like to know how to remove them if they ever need work. Can they be replaced with conventional pedals if need be?
I want wider handlebars -- 44cm. Where do I get those? What (stem) clamp size do I need to be looking for?


As far as I know, 25.4mm was pretty standard internationally for handlebars for a long time. You can probably improvise a pair of calipers by pinching the bars with a crescent wrench, then measuring the gap.


  It has natural gum-rubber brake-lever hoods that are deteriorated. I want to replace these. What will work? I don't care about the color; synthetic black rubber hoods are fine.


These are typically referred to as non-aero brake hoods.


  It has braze-on downtube friction shifters. I want to install bar ends. What, if anything, do I need to be watching out for when I do this? Given that it's a 6-speed, do I have to us old ones, such as a set of Suntour 3090s? Or can I use newer ones that are 9 or 10 speed?


I'm not sure about all models of bar-end shifters, but the Dura-Ace ones can be set in two different modes: indexed and friction. Indexed shifting clicks into place for each gear, and friction shifting requires you to manually fine-tune the placement of the lever. Obviously, indexed shifting will not work for 9/10-speed shifters to a 6-speed freewheel.


  I've never seen pedals (see photo) that attach to the crank arms quite like these. There's a fat bolt spacer between the pedal and the crank arm, and they appear to be held on the back of the crank with a bolt.


Disclaimer: This is purely speculation, BUT

I would wager that the bit you see on the back is actually a kind of large-to-small-diameter bolt hole adapter (not sure what it's actually called). I suspect you might be able to remove the pedals normally, and then unscrew the adapter from the back of the crank with a socket wrench.

(N.b. left pedals are reverse-threaded; i.e., righty-loosey, lefty-tighty.)