Priority 600 (pinion gearbox)
#26
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I bought their Onyx bike with the Nuvinci 330. I really like it, and have put 650 miles on it since buying it earlier this year, but I'm thinking after I put 2,000 miles or so on it then I might buy their 600 bike. Can you shift the pinion geared bike under a load? With the Nuvinci, I can which is nice when dialing in the best ratio when out of the saddle and mashing up a hill with a varying slope.
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I bought their Onyx bike with the Nuvinci 330. I really like it, and have put 650 miles on it since buying it earlier this year, but I'm thinking after I put 2,000 miles or so on it then I might buy their 600 bike. Can you shift the pinion geared bike under a load? With the Nuvinci, I can which is nice when dialing in the best ratio when out of the saddle and mashing up a hill with a varying slope.
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There seems to be enough seat tube and seat post for taller riders, but the top tube is relatively short (upright stance). I'm guessing that replacing the 95mm stem with a 125-130mm stem and straight bars could be enough for taller gents.
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I bought their Onyx bike with the Nuvinci 330. I really like it, and have put 650 miles on it since buying it earlier this year, but I'm thinking after I put 2,000 miles or so on it then I might buy their 600 bike. Can you shift the pinion geared bike under a load? With the Nuvinci, I can which is nice when dialing in the best ratio when out of the saddle and mashing up a hill with a varying slope.
So while it might not go "Ping" or "Clunk" and suddenly fail catastrophically, expect service life to be shortened by wearing prematurely.
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#31
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I don't know about Pinion shifting under load firsthand yet, but I've read that shifting requires taking pressure off the pedals a little. My Alfine 8 does not shift well under load, but I've learned to modulate the load to slip in shifts between strokes, I'm guessing the Pinion is similar, no "mashing" allowed.
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Here's an example of what I was talking about with the flash. It's a fun look in daylight to have the Priority logo lit up from the camera flash.

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Yes, the flash brings out the reflective paint nicely. I like the color accents and straight bars. For myself I may need to keep the stealth black look and let the bike get dirty, there be dragons in this city.
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#34
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The pinion gearbox is internally similar to a sequential motorcycle gearbox, just without a clutch. It's far easier on the gears to let off the power momentarily while shifting. Fortunately, unlike a derailleur system, the gear change is immediate and does not require any pedaling to complete the change. So if you start up a hill that turns out to be too steep for the gear you're in, you can let off, shift down several gears, and start pedaling again immediately in the lower gear without having to stand on the pedals to force it into the lower gears.

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Motorcycle transmissions use dog clutches on the face of sliding gears to engage, not pawls that rise out of the shaft to mate with the inside of the gear. Not a good idea to shift either type under power, but sliding clutches would be more susceptible to immediate damage.
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The pinion gearbox is internally similar to a sequential motorcycle gearbox, just without a clutch. It's far easier on the gears to let off the power momentarily while shifting. Fortunately, unlike a derailleur system, the gear change is immediate and does not require any pedaling to complete the change. So if you start up a hill that turns out to be too steep for the gear you're in, you can let off, shift down several gears, and start pedaling again immediately in the lower gear without having to stand on the pedals to force it into the lower gears.
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Based on my experience with the Pinion, the General has got it right. I think one probably could shift into a lower gear under load using lots of force on the shifter, but it's unnecessary - the merest pause enables the downshifting. Now, having written that, I have a feeling that I might not have to take the pressure off when shifting up, but it's all become so instinctive that I'm not sure ... I guess I'll need to check it out on my next ride
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Probably I'll remove the rack in spring. During winter I can use the bike as a grocery runner -- for light loads.
After getting the rack on, I had a go at hacking an old tail light onto the back end of the rack. Drilled a hole through the base of the light, and mounted it using a sheet metal screw. Wrapped some Gorilla Tape around the mount as an anti-rotation measure. Here's the result:

I have just one pannier, and really ought to buy a second for balance.
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A few pictures from my 600's maiden voyage today.
Posing with the original Uncle Sam


Have hot coffee, will travel. The lowered handlebar stance is right for me, but I need to fine tune it with a straight bars and a longer stem.

I moved the minimalistic Tubus Fly rack from my older bike and crafted an aluminum clip to fasten the strut to the rear brake-bridge. Fits well with Gravel Grinder panniers on this bike.
Posing with the original Uncle Sam


Have hot coffee, will travel. The lowered handlebar stance is right for me, but I need to fine tune it with a straight bars and a longer stem.

I moved the minimalistic Tubus Fly rack from my older bike and crafted an aluminum clip to fasten the strut to the rear brake-bridge. Fits well with Gravel Grinder panniers on this bike.
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#42
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I gotta say, the gumwalls really give it a timeless, almost vintage aesthetic, despite the disc brakes and belt drive.
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Looks mighty fine, Steve! As a tall guy, I'm wondering how much extension is left in the stock seat post?
Looking forward to hearing how it fares over the winter!
Looking forward to hearing how it fares over the winter!
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My inseam is 32" and according to markings on the seat tube the maximum extension is 3" higher, so the stock tube should accommodate a 35" inseam +/-
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Pinion/gates drive ruled the slushy Beantown streets on Friday morning.
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#50
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Great shot of the bike in its element!