Pinion? If so, P1.18 or C1.12?
05-25-24, 02:36 PM
#76
Junior Member
Well, it has to be a P1.18. Even so, I augment it with a CS-RK3 on the back in order to obtain a few extra low gears.
I've used this setup for a year and I'm very happy with it.
Pinion: bombproof, reliable, low maintenance, expensive
Derailleur: cheap, flexible
I've used this setup for a year and I'm very happy with it.
Pinion: bombproof, reliable, low maintenance, expensive
Derailleur: cheap, flexible
05-25-24, 06:04 PM
#77
Senior Member
So is the CS-RK3 (IGH) direct drive in high gear, so low and middle are both reductions, or is middle gear direct drive? If the latter, you only get one additional low gear. Either way though, if you run the rear in direct drive 99% of the time, it should get zero wear except for the wheel bearings, assuming the direct drive is a dog clutch that locks the whole unit, not just locking the planet gears and driving through the locked teeth of them.
05-26-24, 04:19 AM
#78
Junior Member
So is the CS-RK3 (IGH) direct drive in high gear, so low and middle are both reductions, or is middle gear direct drive? If the latter, you only get one additional low gear. Either way though, if you run the rear in direct drive 99% of the time, it should get zero wear except for the wheel bearings, assuming the direct drive is a dog clutch that locks the whole unit, not just locking the planet gears and driving through the locked teeth of them.
So, generally, the IGH is in direct drive, 2nd gear most of the time. High gear is for significant descent >45kph (Pinion high gear not high enough), and low gear is for significant ascent >7% (Pinion low gear not low enough).
Compared to the standard ratio (30T/26T), with a 1:1 drive ratio (30T/30T), the RK3 effectively gives one extra high gear 19, and three extra low gears 0,-1,-2.
05-26-24, 11:14 AM
#79
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Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
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If that is comparable, is the Sturmey Archer comparable to the Dual Drive for quality? Better? Worse?
***
Back to the topic of the thread, I would assume that a new Pinion bike would be through axle, not a 135mm solid axle type of frame. The op wants belt, not chain drive.
05-26-24, 02:53 PM
#80
Junior Member
And some bikes (Maxx.de) use modular rear dropouts, so you can have a choice of through axle or solid axle.
05-27-24, 02:55 AM
#81
Senior Member
Is that hub essentially the same as a Sram Dual Drive? I have one of those on my folder. I can't remember when Sram discontinued them, but it has been quite a while.
If that is comparable, is the Sturmey Archer comparable to the Dual Drive for quality? Better? Worse?
***
Back to the topic of the thread, I would assume that a new Pinion bike would be through axle, not a 135mm solid axle type of frame. The op wants belt, not chain drive.
If that is comparable, is the Sturmey Archer comparable to the Dual Drive for quality? Better? Worse?
***
Back to the topic of the thread, I would assume that a new Pinion bike would be through axle, not a 135mm solid axle type of frame. The op wants belt, not chain drive.
Sachs IGHs (which became SRAM) had a reputation of smooth gears for a bit lower friction in the reduction and overdrive, compared to some other IGHs; I don't know if that quality was maintained after SRAM ownership or not. The only Sachs IGH hub that was problematic in quality and durability that I know of, was the Sachs Elan/SRAM Spectro 12 speed, which was also a good deal heavier than the more modern Rohloff 14 Speedhub.
This wiki shows the Sachs/SRAM 3x7 discontinued in 2000, but I thought they were also made in 3x8 at least 5 years later but could be wrong:
https://en.m.wikipedia.org/wiki/Comparison_of_hub_gears
05-27-24, 05:23 AM
#82
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Depends. I'm not an expert. Sturmey-Archer and Sachs/SRAM both made 3-speed IGHs (among many others), and the SRAM Dual Drive also has external derailleur gears, but I've also heard in recent months that Sturmey Archer also makes a hybrid hub like that (currently now owned by Sun Race and produced in Taiwan), and I think many decades ago as well.
Sachs IGHs (which became SRAM) had a reputation of smooth gears for a bit lower friction in the reduction and overdrive, compared to some other IGHs; I don't know if that quality was maintained after SRAM ownership or not. The only Sachs IGH hub that was problematic in quality and durability that I know of, was the Sachs Elan/SRAM Spectro 12 speed, which was also a good deal heavier than the more modern Rohloff 14 Speedhub.
This wiki shows the Sachs/SRAM 3x7 discontinued in 2000, but I thought they were also made in 3x8 at least 5 years later but could be wrong:
https://en.m.wikipedia.org/wiki/Comparison_of_hub_gears
Sachs IGHs (which became SRAM) had a reputation of smooth gears for a bit lower friction in the reduction and overdrive, compared to some other IGHs; I don't know if that quality was maintained after SRAM ownership or not. The only Sachs IGH hub that was problematic in quality and durability that I know of, was the Sachs Elan/SRAM Spectro 12 speed, which was also a good deal heavier than the more modern Rohloff 14 Speedhub.
This wiki shows the Sachs/SRAM 3x7 discontinued in 2000, but I thought they were also made in 3x8 at least 5 years later but could be wrong:
https://en.m.wikipedia.org/wiki/Comparison_of_hub_gears
05-27-24, 07:21 AM
#83
Full Member
. Welcome, Peter!
05-27-24, 09:24 AM
#84
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Join Date: Aug 2010
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That said, most major retailers and manufacturers rarely post on this forum. If I was a bike business owner, I would want to stay incognito here.
05-27-24, 09:43 PM
#85
Senior Member
I have personal history with one of the entities. I also had brief ownership of a 3x7. And SAs and Shimanos in my youth and serviced both. But that doesn't bias me for or against either in terms of durability, I think the mass of data online outweighs that. I actually trust the experiences of those who have used both long term. The friction comment was based on published test results of various IGHs. I'd actually like to know the opinion of Aaron Goss (IGH repair) on durability of all brands, he probably knows more than anyone, but I can understand completely his not wanting to publish that.
05-29-24, 07:23 AM
#86
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The newbie rating did not shock me, that comes with minimal posting. But that was his first post. And looking closer, joined this month. I would have expected a "joined" date of years ago.
That said, most major retailers and manufacturers rarely post on this forum. If I was a bike business owner, I would want to stay incognito here.
That said, most major retailers and manufacturers rarely post on this forum. If I was a bike business owner, I would want to stay incognito here.
