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-   -   Commuter Xootr computer tutor (https://www.bikeforums.net/folding-bikes/438594-commuter-xootr-computer-tutor.html)

invisiblehand 08-25-08 01:20 PM

Why not do the century with the fat tires?

noteon 08-25-08 01:24 PM

Because attempting 100 miles on a folder sounded like fun, but attempting 100 miles on a folder with 70-psi tires didn't.

noteon 09-07-08 07:39 PM

Just a vent.

I can't get the Dimension Trekking Bar from Dynocoaster onto the Swift because the Allen bolt holding the Dual Drive shifter to the old bar is stripped and won't come out.

Why is NOTHING EASY!?

(Goddammit...)

timo888 09-08-08 07:51 AM


Originally Posted by caseyclan (Post 7032744)
I, too, use a Burley d'lite so I am interested in the response. I am in the market for a folder. I bought some Board D7s to use for camping but my kids like them so much, I may let them have them and get me and the wife some other bikes. I really like the swift - today is the first day I actually paid attention to it. Have you compared its ride/stability to the Downtube? If so, how do they compare? Why one over the other?

Given the way the 6061-T6 alu Swift seat-stay is welded to the seat-tube, my recommendation would be to find something other than an alu Swift for towing a tot-trailer. Turns could place significant lateral stress on the stays, and the stay is weakest in the immediate vicinity of the welds. A steel Swift ought to serve this purpose. Here's what CATOREGON.ORG says:

Originally Posted by CATOREGON.ORG WEBSITE
A popular model for commuters as well as world travelers, the Swift Folder can haul an astounding amount of gear either on racks or with a trailer mount. Pedalers Express uses the Swift on a regular basis with our Hauler trailer to pull loads of up to 500 pounds!

Regards
T

Air 09-08-08 07:59 AM


Originally Posted by noteon (Post 7421105)
Just a vent.

I can't get the Dimension Trekking Bar from Dynocoaster onto the Swift because the Allen bolt holding the Dual Drive shifter to the old bar is stripped and won't come out.

Why is NOTHING EASY!?

(Goddammit...)

You're like me - I always seem to strip screws!

On the century ride yesterday someone stripped their seatbolt thread (had one of those theft prevention bolts - sheared right off). Had to ride for a while with the seatpost all the way down.

Dynocoaster 09-08-08 08:39 AM


Originally Posted by noteon (Post 7421105)
Just a vent.

I can't get the Dimension Trekking Bar from Dynocoaster onto the Swift because the Allen bolt holding the Dual Drive shifter to the old bar is stripped and won't come out.

Why is NOTHING EASY!?

(Goddammit...)

Go to a hardware store and get an easy out. You may have to drill thru the center of the bolt to get the easy out in. I had this happen on a grip shifter recently and that is what I did.

noteon 09-08-08 09:49 AM


Originally Posted by timo888 (Post 7423473)
Given the way the 6061-T6 alu Swift seat-stay is welded to the seat-tube, my recommendation would be to find something other than an alu Swift for towing a tot-trailer. Turns could place significant lateral stress on the stays

No argument, just looking for clarification:

I'm not able to visualize this lateral stress from turns. The point of attachment is at the axle nut, and includes a connector that allows the bike to swivel, turn, or even fall down without perturbing the state of the trailer.

Turning, the hitch swivels/flexes and the trailer follows the bike along a curved path, so I wouldn't expect significant lateral forces at the stays the way I would with, for example, a rigid connection. Can you explain further? Thanks!

noteon 09-08-08 09:51 AM


Originally Posted by Dynocoaster (Post 7423721)
Go to a hardware store and get an easy out. You may have to drill thru the center of the bolt to get the easy out in. I had this happen on a grip shifter recently and that is what I did.

Yeah, I know, I know. Or I may just drop it off at the bike shop and let them deal with it.

Either way, it's annoying.

timo888 09-08-08 02:05 PM


Originally Posted by noteon (Post 7424209)
No argument, just looking for clarification:

I'm not able to visualize this lateral stress from turns. The point of attachment is at the axle nut, and includes a connector that allows the bike to swivel, turn, or even fall down without perturbing the state of the trailer.

Turning, the hitch swivels/flexes and the trailer follows the bike along a curved path, so I wouldn't expect significant lateral forces at the stays the way I would with, for example, a rigid connection. Can you explain further? Thanks!

I'm assuming that the connection between bike and trailer is strong enough to transmit force to the trailer rod, even though it's not rigid metal. And the torsional stresses would be reciprocal: the mass and inertia of the trailer transmit stresses back to the bike. The rear axle is the fulcrum. Here's a Gedankenexperiment:

Turn your bike on its side so the wheels are parallel with the ground. Flip the tot-trailer over too. Remember to take your kids out beforehand.
Now hoist the bike up with a winch to the second storey of your brownstone manse, level with the balcony where you brought your Bösendorfer in, and bolt the top-tube into the balcony floor, so the rear of the bike is hanging off the edge of the balcony. Let the tot-trailer dangle from the rear axle.

Any stresses being placed upon the rear triangle?


Regards
T

noteon 09-08-08 02:34 PM


Originally Posted by timo888 (Post 7426184)
Here's a Gedankenexperiment:

Language, mister! Language!


bolt the top-tube into the balcony floor, so the rear of the bike is hanging off the edge of the balcony. Let the tot-trailer dangle from the rear axle.

Any stresses being placed upon the rear triangle?

Sure. But are significant lateral stresses being placed there when the trailer's not hanging 90° off a balcony?

There are certainly some significant non-lateral stresses. Rearward, for sure.

One relevant question might be: Are those really welds, or are they brazes?

timo888 09-08-08 03:43 PM


Originally Posted by noteon (Post 7426390)
Language, mister! Language!



Sure. But are significant lateral stresses being placed there when the trailer's not hanging 90° off a balcony?

There are certainly some significant non-lateral stresses. Rearward, for sure.

One relevant question might be: Are those really welds, or are they brazes?

Good question about the braze/weld. Don't know the answer.

With the momentum of the trailer when it's being towed, you could end up with more lateral stresses than meet the eye. I'll submit the question to LLNL. :)

Regards
T

noteon 09-08-08 07:57 PM


Originally Posted by timo888 (Post 7426864)
I'll submit the question to LLNL. :)

I expect the Large Hadron Collider will settle it before those bozos even finish figuring out the instructions for the force gauge.

timo888 09-09-08 10:23 AM


Originally Posted by noteon (Post 7428709)
I expect the Large Hadron Collider will settle it before those bozos even finish figuring out the instructions for the force gauge.

Tomorrow is a Big Day. "We’re finishing a marathon with a sprint," said LHC project leader Lyn Evans.

Regards
T

noteon 09-09-08 10:34 AM

They'll be sorry when the monsters come.

noteon 09-09-08 08:29 PM

Here's the first pass at setting up the new handlebar. (Yeah, I got the stripped bolt out.) The photos are a little oversharpened, but I apparently have lost the ability to hold a camera steady.

http://homepage.mac.com/noteon/Sites...9_08/swift.jpg
The handlebar really should be polished aluminum, but if I like it that much, we'll get there. This is my basic commuter setup. That's the Arkel Bug on the Crossrack, with the color-coordinated bungee holding it off the rear tire. (And check out my new Grip Kings. I am style.)

http://homepage.mac.com/noteon/Sites.../dimension.jpg

http://homepage.mac.com/noteon/Sites...09_08/stem.jpg
Gee, I dunno... think I need a different stem?

Air 09-09-08 09:01 PM

Man you can put 5 lights on the front part of that bar. Looking good!

jur 09-09-08 09:53 PM


Originally Posted by noteon (Post 7436411)
...The photos are a little oversharpened, but I apparently have lost the ability to hold a camera steady.

...


Gee, I dunno... think I need a different stem?

Nope you need a different camera. Are you taking snaps of your family with that POS as well? You'll be sorry later... :)

Air 09-09-08 10:10 PM

(Not sure if you need this tip or not - if not no worries)

Hold your non-shooting arm out straight in front of you. Bend your arm and grab your opposing shoulder. Rest the camera on your elbow. Shakeless shots 95% of the time (unless you have to struggle with the clicker) :)

noteon 09-10-08 05:33 AM


Originally Posted by jur (Post 7436935)
Nope you need a different camera. Are you taking snaps of your family with that POS as well? You'll be sorry later... :)

The camera is on its last legs, but the main thing is that I hate flash. In our apartment, that means a one-second exposure time. I would have shot these again with the flash, but I was too lazy. I mean, it's just you guys...

With the kids, usually I gamble on a steady camera a few times and then grab a few with flash (and redeye, and sharp shadows, and no warmth and lousy skin tones) as backup.

Air, I didn't know that one, thanks.

tblott3 09-10-08 10:13 AM


Originally Posted by noteon (Post 7436411)
Here's the first pass at setting up the new handlebar.

http://homepage.mac.com/noteon/Sites.../dimension.jpg

That's what I've been waiting for. That's the setup. And, of course, that bar is nowhere to be found, correct?

Well, how do you like it?

noteon 09-10-08 10:39 AM

I lucked out because Dynocoaster had one he wanted to sell. Before that, I wasn't able to track any down.

Haven't ridden it yet. This is my first chance to get any writing done in about a week, so I'm doing that. But soon...

noteon 09-10-08 07:24 PM

I picked my boys up from the new preschool in the bike trailer today.

I love this handlebar.

Dynocoaster 09-10-08 07:47 PM

Looks very cool.

tblott3 09-11-08 07:29 AM

After my post yesterday, a did a frustrated Google and found a black one @ a place called airbomb.com. They've confirmed the stock and shipping and told me I should have it in hand next week! I'm geeked!

noteon 09-11-08 07:56 AM

Cool!

Credit where credit is due:

http://www.myspace.com/xootrswift

And now comes the critical question of bar plug color...


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