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Notice anything different about this tandem frame?

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Notice anything different about this tandem frame?

Old 01-26-11, 09:52 PM
  #1  
swc7916
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Notice anything different about this tandem frame?

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Old 01-27-11, 04:06 AM
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Two eccentrics?
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Old 01-27-11, 08:02 AM
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No rear derailleur hanger. Coupled with the two eccentrics, this suggests it's made to have an internally-geared hub.

I'm glad to see that they've put the rear disc mounts in the best place (on the chainstays instead of the seatstays).
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Old 01-27-11, 08:47 AM
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Tapered top tubes and down tube.
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Old 01-27-11, 09:54 AM
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. . .+ a very high rise/long stoker stem . . .
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Old 01-27-11, 11:38 AM
  #6  
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very long stoker compartment
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Old 01-27-11, 11:38 AM
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Rohloff hub should be tons of fun!! :-D When do you anticipate finishing the build?
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Old 01-27-11, 12:35 PM
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The frame is self-levitating.
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Old 01-27-11, 01:45 PM
  #9  
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Originally Posted by Chris_W View Post
No rear derailleur hanger. Coupled with the two eccentrics, this suggests it's made to have an internally-geared hub.
You nailed it.

Originally Posted by apage4u View Post
Tapered top tubes and down tube.
The top and lateral tubes look tapered because they used very large-diameter tubes and ovalized them at the ends and middle.

Originally Posted by Murf524 View Post
Rohloff hub should be tons of fun!! :-D When do you anticipate finishing the build?
Being built right now; scheduled to pick up on Saturday.

This being their first Rohloff tandem - as well as their first Rohloff anything with a disc brake - they had to do a lot of design work. The drop-outs were designed specifically for this bike and hand-cut. Actually, they made two sets - they are currently completing the build of a Harmony (re: Counterpoint, Opus) tandem with a Rohloff hub and disc brake option.
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Old 01-28-11, 04:18 AM
  #10  
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Just a couple of questions:

1. What are the diameters of the boom tube and top tubes? You say they're large diameter but it'd be interesting to know just how large.

2. How long are the rear top tube and boom tubes?

3. What is the rear spacing? Is this standard for a Rohloff hub?

Cheers
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Old 01-28-11, 05:47 AM
  #11  
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Originally Posted by swc7916 View Post
This being their first Rohloff tandem - as well as their first Rohloff anything with a disc brake - they had to do a lot of design work. The drop-outs were designed specifically for this bike and hand-cut. Actually, they made two sets - they are currently completing the build of a Harmony (re: Counterpoint, Opus) tandem with a Rohloff hub and disc brake option.
Sounds like Dennis' handiwork, both design & execution.
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Old 01-28-11, 01:30 PM
  #12  
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Originally Posted by TandemGeek View Post
Sounds like Dennis' handiwork, both design & execution.
Actually, Dennis's fingerprints are all over this bike - in that he trained Todd Bertram, who actually built the frame - but Dennis had no part in the design and execution of this particular bike. Dennis just came back to work after about 3 months away from the shop due to surgery to correct a broken collar bone. Apparently sometime last year his Keo pedal spindle broke when he was out riding and he went down and broke his collar bone. It didn't heal correctly and he had to have some kind of a metal brace implanted to hold it in place and couldn't work while it was in there.

The design is by Scott Rock with assistance by Todd. Scott did the design of the drop-outs and had a couple of sets made in their shop. Scott and Todd spent a lot of time collaborating on the cable routing and braze-on layout. I was told that Todd actually worked for Rohloff in Germany for a time.

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Old 01-28-11, 02:57 PM
  #13  
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Originally Posted by IanS View Post
Just a couple of questions:

1. What are the diameters of the boom tube and top tubes? You say they're large diameter but it'd be interesting to know just how large.
I don't know; I'll have to ask when I'm at the shop.

2. How long are the rear top tube and boom tubes?
Rear top tube (c-to-c): 731.2 mm or 28.79inches
Keel tube (center of bb to center of bb): 760 mm or 29.92 inches

3. What is the rear spacing? Is this standard for a Rohloff hub?
Standard Rohloff, which I believe is 135 mm.
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Old 01-28-11, 05:16 PM
  #14  
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Originally Posted by swc7916 View Post
Actually, Dennis's fingerprints are all over this bike
You might want to see if they'll repaint it under warranty. I hate fingerprints in the paint that's just sloppy workmanship...
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Old 01-29-11, 06:49 AM
  #15  
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I couldn't tell for certain, but did they install a Rohloff frame pin and is it what appears to be 12:00 from the axle?

Just seems odd they didn't cut a long slotted right dropout if they had to hand cut them.

Rohloffs are cool. How do you plan to run the shifters? At the aft and bottom of the drop bars or something different?

It would be even more cool if you could find someone to modify the handlebars and shifter to fit road bars up near the stem clamp.

PK
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Old 01-29-11, 12:47 PM
  #16  
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Originally Posted by PMK View Post
I couldn't tell for certain, but did they install a Rohloff frame pin and is it what appears to be 12:00 from the axle?
Yes.

Just seems odd they didn't cut a long slotted right dropout if they had to hand cut them.
It's not necessary and the short slot makes it easier to remove the wheel

Rohloffs are cool. How do you plan to run the shifters? At the aft and bottom of the drop bars or something different?

It would be even more cool if you could find someone to modify the handlebars and shifter to fit road bars up near the stem clamp.
Like this:

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Old 01-30-11, 11:23 PM
  #17  
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Agree on the index pin and shorter dropouts making the wheel remove easier. Our off-road Fandango 29r hardtail has long dropouts. Alex designed it so no frame tab was needed, it's not a big deal getting the wheel out, but I agree more difficult than short dropouts. We don't run Rohloff but XO. Guess I should trim them off since we have no plans to go Rohloff on that bike.

That works for a shifter. I was basing the idea of kind of permanently adding the shifter to road bars. The Easton carbon drop bars I've cut apart all have splices inside the tubes. It would be pretty easy to install the shifter on the bars provided the bars were not oversize.

Regardless, looks very nice. Pretty handy to have the stoker backpedal to first for a fast get away when stopped.

What disc are you using, a big Hope with vents?

PK
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Old 01-31-11, 08:39 PM
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Originally Posted by PMK View Post
Pretty handy to have the stoker backpedal to first for a fast get away when stopped.
Backpedal to first? All you do is turn the shifter and it shifts. Instantaneously. No pedaling required.

What disc are you using, a big Hope with vents?
It has a 203 mm Rohloff rotor and an Avid BB7 caliper.
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Old 02-01-11, 05:44 AM
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Originally Posted by swc7916 View Post
Backpedal to first? All you do is turn the shifter and it shifts. Instantaneously. No pedaling required.
I have not spent a whole lot of time riding a Rohloff, but it seemed that unless all the internals were aligned when you stopped, it may not drop a lot of gears without a small amount of moving the sprocket. Most of the off-road guys apparently have this happen as they clip into the pedals.

As I mentioned, I never spent a ton of time on the Rohloff, never noticed it as a concern, but have been told to just shift and give a short pedal backwards to get set to ride away. It would be even better if the shift was fully automatic.

Regardless, it should be a great bike.

PK
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Old 02-02-11, 09:50 PM
  #20  
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Originally Posted by swc7916 View Post
This doesn't look like a good setup. Looks even more awkward than the old lever-style stem shifters. But maybe it's just me.
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Old 02-11-11, 05:56 PM
  #21  
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If you would like to see the finished bike, Rodriquez Bicycles posted some photos on their Facebook page.
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Old 02-12-11, 02:28 AM
  #22  
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I hope you're comfortable with using a wide cadence range. The 14% jumps between gears is a big enough concern for me to not want a Rohloff on any road bike. Awkward positioning of the shifter would just add to the problem in that you won't want to bother shifting unless it is really worth it. As long as you can happily ride with a huge variety of cadences, then it might work for you, but I could never do it.

Rohloff needs to make a version of their otherwise-excellent hub for road bikes. A 12% difference between gears would still give a decent range of about 450%. The shifter for drop bars could be a simple bar-top mounted old-school thumb shifter or a bar end lever - I'm sure they could work in the dual shifter cables with a little ingenuity.
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Old 06-08-11, 02:06 PM
  #23  
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26" or 700c?

26" or 700c?
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Old 06-10-11, 04:30 PM
  #24  
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Looks like 26" to me... or that's a big tandem.

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Old 06-10-11, 06:44 PM
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Stoker has control over the disc?
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