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Old 2013-09-22, 06:05 AM   #16
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Is there a close-up shot of that hub?
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Old 2013-09-23, 03:57 AM   #17
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Is there a close-up shot of that hub?
I haven't seen one. I'll post one when I make a unicycle version when they come out, in December or so.
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Old 2013-09-23, 12:07 PM   #18
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I haven't seen one. I'll post one when I make a unicycle version when they come out, in December or so.
This'll be worth waiting for!
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Old 2013-09-26, 06:44 PM   #19
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Why is everyone quoting the post directly above theirs? Isn't that a given?
Sorry... just something I noticed.
It isn't necessarily directly above. See, if I hadn't quoted you, who would know what it was about?
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Old 2013-12-17, 02:45 PM   #20
waaalrus
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A little more information on this project.

JR Drift Trikes
"Here's a little sneak peek of our highly anticipated 3.8 GC hub! 48 spoke, disc brake ready and geared at 3.8:1 to launch you into warp speed! Who wants a go on one of these then!?!"
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Old 2013-12-17, 04:41 PM   #21
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So this hub is effectively twice the gain of a Schlumpf?

Good luck getting this thing rolling, then I wish your great luck with your landing when you try stopping

You need the longest cranks possible, 175-180.
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Old 2013-12-17, 04:53 PM   #22
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So this hub is effectively twice the gain of a Schlumpf?

Good luck getting this thing rolling, then I wish your great luck with your landing when you try stopping

You need the longest cranks possible, 175-180.
on the other hand, bring on the G12s
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Old 2013-12-17, 04:57 PM   #23
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So this hub is effectively twice the gain of a Schlumpf?

Good luck getting this thing rolling, then I wish your great luck with your landing when you try stopping

You need the longest cranks possible, 175-180.
It's something like 2.4 Schlumpfs (if that's a unit of measure) with no shifting but on a 20" wheel. I have your 125mm and 150mm cranks I can try with it. I'm hoping I don't have to go larger than that. It will definitely be a challenge to get it going on flat ground and riding it up any kind of incline but should be feasible on a slight decline. I'll probably need to practice a skate-style start for flat ground.
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Old 2013-12-17, 05:42 PM   #24
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Would love to have this disc brake setup on my Schlumpf.
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Old 2013-12-18, 12:16 AM   #25
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It's something like 2.4 Schlumpfs (if that's a unit of measure)
It depends on how you define the unit "Schlumpf" but I would argue it's more than 2.4.
The Schlumpf gear ratio is about 1.55. To be precise it's 17/11.
If you would drive the pedals (in high gear) through a second Schlumpf, you'd increase the total ratio to 17/11 squared, that's about 2.39.
Now if you drive the pedals of that second Schlumpf through a third Schlumpf, the total ratio would be (17/11)^3 or 3.69. If you will, that's three Schlumpfs in series. Waaalrus's ratio of 3.8 is even a little bit more than that. I'd say it's about 3.07 Schlumpfs.

I figure it will be difficult to ride, and even more difficult to get started, even on a 20 inch wheel. The virtual wheel diameter is almost 80 inch! Curious to read a ride report.
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Old 2013-12-18, 12:26 AM   #26
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Would love to have this disc brake setup on my Schlumpf.

Just add one.. I did.

http://www.corbinstreehouse.com/blog...tain-unicycle/


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Old 2013-12-18, 01:36 AM   #27
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150s on a 20 is getting into pedal strike territory but could be manageable.

On the other hand your gain ratio with a 3.8 gear and 150s on a 20 would be 6.43:1, getting into the "Danger Will Robinson! Danger" territory on my gain ratio chart, comparable to using 70mm cranks on a 36, but without the big wheel stability but a much smaller distance to fall. I would suggest rollerblading safety gear since it is likely to be similar kinds of falls.
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Old 2013-12-18, 04:29 AM   #28
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150s on a 20 is getting into pedal strike territory but could be manageable.

On the other hand your gain ratio with a 3.8 gear and 150s on a 20 would be 6.43:1, getting into the "Danger Will Robinson! Danger" territory on my gain ratio chart, comparable to using 70mm cranks on a 36, but without the big wheel stability but a much smaller distance to fall. I would suggest rollerblading safety gear since it is likely to be similar kinds of falls.
I find that cranks larger than 114mm throw off my balance. This is tolerable on my 36" freewheel unicycle because it affords me time to recover from imbalances. I'm not sure how it will work with a high-geared 20". Pedal strikes shouldn't be a concern even with longer cranks because I'm not planning to take it mountain unicycling and I have my pedals level when I turn.

I have six sets of elbow pads and six sets of knee pads (three include shin protection - this is not including a couple shin-only pads). I got these elbow and knee pads specifically for my 36" freewheel riding, downhill speed runs, and (possible in the future) skatepark riding:

DEMON SKATE ELBOW X D3O
DEMON SKATE KNEE X D3O

I figured these would be best on drag falls which might move other pads I have. They are not perfect because they didn't work great with a recent fall:

https://www.youtube.com/watch?v=FKJs8dgc8UY&t=102

After that I had a I had a great idea to wear a particular set of elbow pads under a compression shirt on my trail rides. They have great protection and are comfortable but too easily moved and slipped down (before).

Thanks for the suggestion!
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Old 2013-12-18, 05:50 PM   #29
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Sorry, I wasn't very clear. I was referring to the inboard disc brake setup which the Trike hub has. I am already running the setup with outside disc and spirits.
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Old 2014-03-19, 06:31 PM   #30
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Getting close to pre-order. Sturmey-Archer hub.

https://www.facebook.com/JrDriftTrik...5145947307406/



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We've just taken delivery of our first few pre-production JR Game Changer front ends! These are exclusively for our team riders and a few other lucky drift trikers around the globe. This hub is geared at 3.8 :1 so you can pretty much crank your pedals down any hill and in between every drift! These few are 48 spoke and disc break ready, production will be 36 spoke. We'll be taking pre-orders for the first batch. We'll have a price for you in a couple of weeks!
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