BTW as far as (aka Chadrider) thats not me!
Oh, self elected hall monitor then?
Not sure if this will also violate your sense of 4-Sale notices, but for others here is a 25% OFF voucher/coupon code "NOEL" for anything at 3tcycling.com until the end of Dec/13. That is a handy discount on the Arx II stem mentioned above, or otherwise.
custom Dean Bikes ti stem attached. It took a long time for them to get this thru their queue. Really beautiful work, welding, clamp mechanisms. This one was a reject mis-fabed in angle, but fits on a friends tandem. Dean will make in any angle or length. Ti gauge is adjusted to suit length. This one is 250mm, 225-230 grams. Aluminum face plate, aluminum bolts. This one was made for 31.8mm bars, but is mounting up old school narrow bars on which shims have been added. Price about $250. Plan to be exacting on the how the length and angle are spec'd so it is sure to be correct. Dean provides drawings and bases fabrication on an angle perpendicular to the seat post. This dry run first issue stem has helped them understand the right questions to ask tandem teams. Expect it to take some time to get thru their small shop.
Attachment 360568Attachment 360569Attachment 360570Attachment 360571
The photo shown with the tape measure may be a bit misleading, since the tape is layed along the bottom of the stem. Given the photo, the stem appears to be 10.5" = 10.5 * 2.5cm = roughly 262.5mm.
I believe the correct measurement point that should be shown is along the centerline of the stem length, starting from the center of the steerer/seatpost clamp and extending through to the center of the bar clamp. This would yield more like 10" = 10 * 2.5cm = 250mm as claimed.
The latter method is used by most all stem mfr.
DaVinci also has Ti stoker stems available in 3 sizes: 160mm, 180mm, and 200mm lengths for $220. They claim 188gm for what I assume is the 160mm.
new Trial Tech stem 35 degree X 180 long 243 grams. This stem only costs $55 and I have not replaced the stock bolts. $250/225 grams vs. $55/243 grams with stock bolts. Granted the Ti one is 250mm long. For most applications I would think something like the Trial Tech would be more than adequate. A 250mm long stem seems to be extremely long.
For those who need, the trail tech often comes up short in steepness of the angle. For my 5'-4" stoker, 220 to 250mm (depending on chain or belt length tandem) is about right. For others with a very tall stoker, the angle needs to be more like 60 degrees to place the stoker bars at a point immediately behind the captains seat or even above it. Dean Bikes is working on just such a stem for a tall stoker now. For those reasons I think the Dean Bikes information I have offered is a positive contribution to the forum.
Another Dean Stem for a team in WY, for a tall stoker in back.
"The Dean stem is a work of art. It is beautiful and I think it is light at 185gm for its size. Our 2 piece setup we were using was 505gm..I am not sure it put's Aimee's bars exactly where I wanted, but that is not Dean's fault. Through this process, I have learned that if I was going to do it again I would make an exact template of what I want, more for me, so I could make sure I had the bars positioned correctly, before ordering. I tried to do it by measuring alone, and I think I was off by just a bit. Also it would be good to know the size tubing being used, ahead of time, to allow the right amount of relief on the saddle clamp screws, etc. All in all, we are very pleased, and like I say the stem is a work of art!!"
Attachment 364858Attachment 364859Attachment 364860
Do you still have this stem (3t Arx II 150 mm 31.8 mm clamp)? Is it a +/- 17 degree?
3T does not seem to make it anymore and I am trying to source one.
If searching for it, take note it is the ARX II TEAM version that is made with the 150mm option.
Just arrived but a bust: The KCNC Arrow stem stamped as 150mm is shorter than my 3t ARX II team 140mm stem.
Just completed 195mm 30 degree stoker stem, custom carbon and alum. 190g with ti hardware. Had targeted 175g to match our out-of-production Bob Davis Carbon stem 192mm stem, but as a prototype the fabricator chose to over shoot the weight a little to be more stiff. Took about 2 weeks. I provided a 100mm Ritchey base stem which was cut and lightened. Fabricated by Velo Zephyr. $200-$225 not including the $55 cost of the Ritchey. For my stoker, this one is about 3/4" to 1" longer than the Trial Tech, on a frame that is belt length, and she won't ride anything shorter and feel comfortable for the ultra-endurance rides we do. Keep your stoker happy! Velo Zephyr is considering putting this up on their web site with a form for dialing in the desired dimensions, using 7, 17, 20, 30 degree base stems if there is an interest beyond my own need.
Attachment 489189Attachment 489190Attachment 489191Attachment 489188Attachment 489194Attachment 489193Attachment 489192
It took a while to get her a good riding position. It was a challenge because my wife has a longer inseam while I'm slightly taller. We started with a 180mm trials stem with 35 deg rise and went to 200mm Da Vinci ti stem to reduce the reach. As part of our tandem fit, Charlie Heggem at Cirrus Cycles suggested a higher rise stoker stem.
To test this suggestion, we attached the Aber Hallo stem to our Da Vinci. The Aber Hallo provides about 2" of height adjustment and can be rotated to change the reach. It's only $40, but requires a shim to go from 25.4 to 31.8mm. Once we found the sweet spot, we asked a local framebuilder to make a 1-piece titanium stem to duplicate the new position. The new stem makes brings her bar to the same height as her saddle, and is far more comfortable. It's close to her single bike setup. The bonus is that our new stem is light and looks pretty good.