Hi Mike,
No 101 speedometer? Me too. I doubt reproductions will ever be made.
I have three Indians with retro-looking GPS speedometers (one a tank mount on a Scout, two on Chief handlebars). I love them. Work great.
So I'm thinking: Why not get the almost original look PLUS super-accurate speed AND odometer, trip, hours, compass heading and more (like illuminated dial)?
Buy a retro-looking black dial analog needle AutoMeter 3-3/8 in. (body) Old Tyme Black Series No. 1749 GPS speedometer (List $349.95). Has 3-3/4 in. bezel, close to original Corbin.
Put it in Autometer’s 3-3/8 in. black cup No. 5204 (List $34.95). With speedometer installed stands 3-1/4 in. tall. Cut cup down to get 2-3/4 in. if you want to more closely match a old Corbin.
Modify cup so antennae wire and voltage wires exit horizontally at cup side at base.
Hide the 16 feet of fine coaxial cable (don't cut) and the voltage lines in reproduction or old original Corbin drive cable cover installed at hole you made at base side. Just bunch antennae wire inside cover. Antennae wire ends in a small black magnetic antenna – place inconspicuously on front of seat yoke or on rear fender (must have access to sky).
Mount cup to top tube with reproduction bracket from the folks in Brzeg, Poland (www.Oldtimerpartsweb.com).
And voila! Looks like your 101 has an original speedometer (well almost). And this one is accurate!
Power with one of many 12 volt lithium battery backs with an on/off switch, such as TalentCell 12v 6000mAh, and mount (almost) hidden under seat.
Must use suppression ignition wiring to avoid interfering with the GPS signal. Get and install 8mm lacquered cloth covered original-looking ignition (but suppression) wiring sets from LowBrow Customs. Available in "oak" with red and black tracers or black with red tracers (just $39.95).
May or may not work. The AutoMeter GPS speedometers are very sensitive to signal interference even with supression ignition. Placement is critical and I'm uncertain if a tank mount on a 101 with a magneto would work. If it doesn't work, use the speedometer on the handlebars of another Indian with a non-working or inaccurate speedometer.
Let me know if it works. Then I'll make one up for my 101!
OK, then, maybe I'll go first.
Bob Lodge