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Priority 600 (pinion gearbox)

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Priority 600 (pinion gearbox)

Old 10-27-18, 07:22 PM
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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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Old 10-27-18, 09:20 PM
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Originally Posted by Payton1221
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.
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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Old 10-27-18, 09:24 PM
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Originally Posted by General Geoff
That looks awesome! As a 6'2" person though I am a bit concerned about the large frame not being quite large enough. Thank you for the report and the photos!
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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Old 10-27-18, 09:28 PM
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Originally Posted by Payton1221
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.
I think it would be better to ask, should it be shifted under load.The Shimano Alfine will shift under load, but I've seen the results of doing so. The repeated engaging and disengaging of the rising pawls to the sun gears while torque is applied greatly accelerates wear. The countershaft gears in a pinion have a similar engagement mechanism which would be negatively affected by shifting under torque.
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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Old 10-27-18, 09:38 PM
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Originally Posted by JonathanGennick
Pro tip on the photos: Force your camera flash to be on even during daytime when shooting the bike. The effect from the retroreflective paint is brilliant.
The reflective paint accents on the Priority are a nice touch. I'd like to see more of this kind of thing, use the frame and fenders as a canvas. On my older commuter I created a pattern using strips of 3M black reflective film, really lights up under headlights
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Old 10-27-18, 10:07 PM
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Originally Posted by Archwhorides
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.
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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Old 10-28-18, 02:34 AM
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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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Old 10-28-18, 05:28 AM
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Originally Posted by JonathanGennick
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.
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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Old 10-28-18, 06:33 AM
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Originally Posted by General Geoff
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.
Sounds like I've found my next bike
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Old 10-28-18, 06:42 AM
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Originally Posted by General Geoff
The pinion gearbox is internally similar to a sequential motorcycle gearbox, just without a clutch.
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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Old 10-28-18, 07:24 AM
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Originally Posted by General Geoff
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.
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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Old 10-28-18, 08:54 AM
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Pretty cool bike. Here's some 9 speed titanium eye candy.







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Old 10-28-18, 11:01 AM
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Originally Posted by RobSN
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
I sometimes upshift under a light load. Downshifting is less forgiving. Better to briefly pause.
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Old 10-28-18, 03:15 PM
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Originally Posted by Archwhorides
I swapped in my trusty C17 carved saddle and SPD MTB pedals to nearly complete the current version, pannier rack and studded tires to follow.
Ok. You've motivated me to bolt on the rack I bought over the summer. I went w/silver for contrast:



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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Old 10-29-18, 09:58 AM
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Congrats on getting your new bike out and about! Looks great!
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Old 10-29-18, 04:54 PM
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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.
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Old 10-29-18, 08:22 PM
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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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Old 10-30-18, 06:43 AM
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Those Ortlieb panniers look good!
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Old 10-30-18, 10:20 AM
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Old 10-30-18, 01:13 PM
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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!
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Old 10-30-18, 01:28 PM
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Originally Posted by mkblackwell
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!
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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Old 11-18-18, 01:52 PM
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Pinion/gates drive ruled the slushy Beantown streets on Friday morning.
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Old 11-18-18, 03:47 PM
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Originally Posted by Archwhorides


Pinion/gates drive ruled the slushy Beantown streets on Friday morning.
Bike looks good! That a loading dock? I can see the water. Look like that panier is earning its keep.
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Old 11-18-18, 07:23 PM
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Originally Posted by JonathanGennick
That a loading dock? I can see the water. Look like that panier is earning its keep.
Yup, the office dock it is. Rolltop Ortleibs get it done in most any weather, love their Gravel Grinder small panniers
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Old 11-18-18, 10:25 PM
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Great shot of the bike in its element!
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