John Jacob Jingle Hammer Schmidt!
- Thread starter Iridemtb
- Start date
OK, Crankworx has come and gone, so now all of us that have ridden these things and have full the tech specs can respond to some questions:
1. The frame must have ISCG tabs (new or old). An adapter won't cut it.
2. This will not work with bikes that don't have clearance for the shift cable at the DT/BB junction at 4-6 o'clock. That eliminates some bikes with lots of forgings or links down there.
3. It does not have chain tensioning features, just retention.
4. It is wider and heavier than a deraileur setup, but it shifts instantenoulsy, and has very little mechanical drag.
A pretty cool product, not something I can find a need for in my own personal riding world, but I can think of pretty of people who will be stoked on it.
Don't expect much more in the next 2 years or so from Sram on the planetary gears front. They spent a TON of money on this project, and the Imotion gearhub project the last 3 years....
1. The frame must have ISCG tabs (new or old). An adapter won't cut it.
2. This will not work with bikes that don't have clearance for the shift cable at the DT/BB junction at 4-6 o'clock. That eliminates some bikes with lots of forgings or links down there.
3. It does not have chain tensioning features, just retention.
4. It is wider and heavier than a deraileur setup, but it shifts instantenoulsy, and has very little mechanical drag.
A pretty cool product, not something I can find a need for in my own personal riding world, but I can think of pretty of people who will be stoked on it.
Don't expect much more in the next 2 years or so from Sram on the planetary gears front. They spent a TON of money on this project, and the Imotion gearhub project the last 3 years....
twice the price and weight = novelty.
II got a chance to ride the HammerSchmidt a few months ago down in SLO (where the Truvativ facility is located). I was supposed to have an article ready for today (up on Pinkbike) but my 80+ hour work weeks (real day job) has delayed that a bit. stay tuned...
I want.
Maybe they're gearing up for a rear hub as well? Perhaps a rear hub with a lower number of gears, maybe 4 or 5 to save space combined with the HammerSchmidt...
Maybe they're gearing up for a rear hub as well? Perhaps a rear hub with a lower number of gears, maybe 4 or 5 to save space combined with the HammerSchmidt...
I guess the whole reason I was excited about a gearbox would be to eliminate the rear der. not the front. Seems like a cool innovation but it's the rear that really needs dealt with IMO.
yay guess its not ment for the masses! the best $800 crankset available and it weighs the most. im sorry but for $800 there are SO many more things i can get to upgrade a bike. This looks like something the gearmonkeys will buy but the practicalmonkey will pass on.
Agreed, I think the rear shifting should have been tackled first but maybe they do have something in the works. Hopefully.
I got to ride that bad boy at the sea otter this year. Super cool.
yep. the added expense / weight / complexity to address the less problematic half of the current two-transmission (dérailleur) system is a bit disappointing. we need the big guys to focus their efforts on one universal lightweight / burly box. rohloff is close - it CAN be done.
I think the Hamm (aka Hammer Schmidt) will work well on my Splinter MX. When I decide to strip it down this winter I'll probably order one up. I have an eternal soft-spot for planetary gear transmissions.
And in my mind it has to happen at the Rear hub. All the BOXX type transmissions are just too restrictive on the suspension designs. Cut the weight of a Rohloff in half and get a 12mm axle through it and we are done with derailleurs.
where is that belt driven CVT rear hub at?
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Unfortunately, I think the clamshell will get in the way of the cable routing. It won't shift
... I agree, it would be great on that bike though!
Spent a full day riding hammerschmidt today in pemberton (as well as Elixir CR brakes). More photos and such later, but basically, it's rad.
Planetary gear that gets engaged/disengaged by a shift from a special XO/X9 shifter. You get instantaneous engagement, like INSTANT. Its pretty rad for those holy crap you need more gear moments.
It uses a half isis/half howitzer BB. Uses proper (up to proper spec) iscg tabs to anchor it to the frame. Its about 10-160g heavier than a standard setup (freeride or all mountain setups) It will run about $650 by the time it is all said and done (cranks/BB/Shifter + 2 chainrings and 2 guides).
Planetary gear that gets engaged/disengaged by a shift from a special XO/X9 shifter. You get instantaneous engagement, like INSTANT. Its pretty rad for those holy crap you need more gear moments.
It uses a half isis/half howitzer BB. Uses proper (up to proper spec) iscg tabs to anchor it to the frame. Its about 10-160g heavier than a standard setup (freeride or all mountain setups) It will run about $650 by the time it is all said and done (cranks/BB/Shifter + 2 chainrings and 2 guides).
I think thats exactly what everyone needed to hear. That sounds slick.Spent a full day riding hammerschmidt today in pemberton (as well as Elixir CR brakes). More photos and such later, but basically, it's rad.
Planetary gear that gets engaged/disengaged by a shift from a special XO/X9 shifter. You get instantaneous engagement, like INSTANT. Its pretty rad for those holy crap you need more gear moments.
It uses a half isis/half howitzer BB. Uses proper (up to proper spec) iscg tabs to anchor it to the frame. Its about 10-160g heavier than a standard setup (freeride or all mountain setups) It will run about $650 by the time it is all said and done (cranks/BB/Shifter + 2 chainrings and 2 guides).
I think personally I am going to wait for some kind of rear gearbox option. I'm happy working through a 36t up front on all of my mountain bikes.
Ugg. Crap I think your right. I'll have to get the dimm. from SRAM and see if it'll work.Unfortunately, I think the clamshell will get in the way of the cable routing. It won't shift
wow. a 1/3 of a lb. weight increase is all?
Tell us some more about the TurnerSpent a full day riding hammerschmidt today in pemberton (as well as Elixir CR brakes). More photos and such later, but basically, it's rad.
Planetary gear that gets engaged/disengaged by a shift from a special XO/X9 shifter. You get instantaneous engagement, like INSTANT. Its pretty rad for those holy crap you need more gear moments.
It uses a half isis/half howitzer BB. Uses proper (up to proper spec) iscg tabs to anchor it to the frame. Its about 10-160g heavier than a standard setup (freeride or all mountain setups) It will run about $650 by the time it is all said and done (cranks/BB/Shifter + 2 chainrings and 2 guides).
Liking more and more about this system the vids on there site were quite interesting, looking forward to more trancend!
Is it wider then a standard set of cranks?
Worried about my Q factor.
Worried about my Q factor.
Q factor is just about the same, that was my first question. +2mm. They took some of the bend out of the drive side crank to make up for it.
how are the elixir brakes?
The Elixirs are great. They feel like a juicy carbon with slightly more modulation and much easier, tool free adjustments. All in all a nice upgrade. Adjustable banjo, reach and contract point adjustment with your fingers, anti-wind fitting on the cable etc.
Is there anyone there reporting that is not sponsored by sram?
Any word on what maintenance and repair is like?
I'm interested to see what nicolai is doing w/ the b-box.
http://www.ridemonkey.com/forums/showthread.php?p=2999118#post2999118
I'm interested to see what nicolai is doing w/ the b-box.
http://www.ridemonkey.com/forums/showthread.php?p=2999118#post2999118
Neither will be as cool as my P boxx.
It's a catheter driven reservoir that mounts underneath a traditional toptube allowing hands free urination during rides. Because sometimes the need to keep going can't be interrupted by the need to just go.
I just put up a quick writeup and a couple of photos.
http://www.transcendmagazine.com/archives/2008/08/truvativ-hammer.html
http://www.transcendmagazine.com/archives/2008/08/truvativ-hammer.html
yes, but nothings as sweet as the V-Boxx
my contribution
READ IT HERE
READ IT HERE
Nice write up Luc. Very informative. Thanks!
just found this http://www.krisholm.com/khu/kh-schlumpf
a two-speed hub for unicycles. evidently you shift it by hitting a button that is mounted over the crank bolt. anyone with a better understanding of how this and the hammer work care to compare and contrast these systems for us?
a two-speed hub for unicycles. evidently you shift it by hitting a button that is mounted over the crank bolt. anyone with a better understanding of how this and the hammer work care to compare and contrast these systems for us?
i wonder if that would hold up to some trials
Same concept. It's a planetary gear overdrive. The shifting is different as are the ratios, but it's the same basic design.