philski

The n360 grip shift is a single slide on unit which works fine on flat bars, however for my style of riding bullhorns of trekking bars are preferable... Is there any way to get the shifter on the inside (near the stem) of a pair of trekking bars, or an alternative shifter for the nuvinci 2 cable design?

Next best solution I guess are flat bars with bar ends? Are there trekking bars which disassemble or mate in pieces?

Thanks,

Philip

fietsbob

Should work .. slip the grip shifter on, then the brake lever.. onto the open end..


[Rohloff grip shifter, trekking bars, on 2 bikes, of mine.]

no dis-assembly required..


WTF , for?

philski

Fietsbob:

To be clear, see the attached picture. I want the grip shift there as it is my default braking position.

Could you so at show me a picture of your setup?

Philip

fietsbob

Either we are speaking of a different trekking bar or, you have apparently an odd taste,
and a hacksaw.

I, adopted the more seemingly normal .
installation the bars reversed of your installation and the controls on the part you have cut off.

I have a picture of my Koga-Miyata WTR Posted here

https://www.cyclofiend.com/working/20...clark1008.html

some changes since ..

the original trekking Bars off the WTR, not in picture, migrated to the Bike Friday.

There are aftermarket grip shifters for Rohloff, made larger ID to slide around curves
so as to position the shifter near the center of Drop bars .

perhaps they can be adopted .. products of Small German machine shops .
https://www.rohloff.de/en/technology/...ter/index.html

perhaps they can be adopted ..

philski

They are Nashbar trekking bar with the flats removed! Angle grinder and sanding block. Gives me the stretch of bullhorns while still offering multiple hand positions at non-orthogonal angles. I've spent years addressing back and wrist issues, finally got things good with the Nashbar bars, but spent zero time in the flats in this configuration. Commute tested, RAGBRAI approved!

Either waynly way to mount the grip shift is on the outside of the bar, and unless you mount it in the wrong side the cable routing is ugly.

Was hoping the nuvinci grip shift was a clamshell type design with lock rings but no such luck. Debating having a friend at work cut the bar and inserting a smaller diameter tube, welding/brazing and bolting under the bar wraps.

HillRider

You DON'T want to do that. There is a reason no one makes multi-piece handlebars. A joint failure in a handlebar has got to be right up there with a broken fork and a sure-fire crash producer.

philski

Devils advocate: bar ends? Affixed with a bolt.
J-bars? Multiple bars welded in place

https://fcdn.mtbr.com/attachments/29e...ones-h-bar.jpg

I should mention we do aerospace flight vehicle engineering and fabrication at work, full shop and then some. Although a commercial solution would be my preference. Might look at some kind of j-bar variant.

Was just hoping this would be easier as the Nashbar trekking bars have been magic for me. And the price is right

Thanks, Philip

Looigi

Most aero bars are multi-piece. Attaching the bars to the steerer via a stem could be considered multi-piece as well. What's operative is the strength and reliability of any joint.

fietsbob

then they're cheap enough to just get another set, and this time leave them as they were.

Or a regular MTB bar, slide the brakes and gripshifter on then install Ergon GR5 grip/bar-ends

Or how about importing these https://www.sjscycles.co.uk/humpert-a...amp-prod24408/

philski

Yes mother

No sense in arguing... Good day sir.

Anyone else with constructive solutions: alternate bar configurations, shifting configurations, etc are welcome. My wrists are most comfortable at a 45 degree angle like mustache bars or on bullhorns. I commute with mixed hils/intersections so having controls near a comfort position is strongly desired as I shift frequently

fietsbob

Sell you the Mittelmeyer grip shifter I have , Its made for that Road bar setups. , and it's pull pull
You can even run the aero brake cable housing through it.

the silly little worm window is gone , but it was a gimmick anyhow.

onbike 1939

I've fitted quite a few sets of these and they work well. I usually shorten the curved ends so as to take a mirrycle mirror.

philski

Cool. Thanks! I will give those a look.

HillRider

I agree but cutting a road or MTB bar and plugging/welding it is an entirely different matter. If bar ends or aero bars slip they just rotate.

fietsbob

Bike Friday makes their own split MTB Bar, its of 4 pieces of tube, triple layers in the center .

And the H bar , yup, T like piece, welded on each end. /----------\

LesterOfPuppets

Doesn't look like you have room on your steerer, but if you did, you could do the threadless version of an olde Sheldon Brown kludge:

HillRider

How much of a spacer stack do you have under your stem? If it's enough, you could fabricate a bracket around it to do what Lester illustrated

fietsbob

one on the side of the stem.. https://www.rohloff.de/en/technology/...ker/index.html

stacking another threadless stem under yours and clamping a 7/8" tube in it, would do also..

philski

Hey guys thanks for the extended suggestions! been busy with work and forgot to check the thread. Going to start with a bar end clamped to the steerer tube or on the handlebars near the steerer tube, make sure IGH is really all its cracked up to be, and then if necessary invest in a nicer option (co-motion or mittelmeyer shifter, bars that break down, etc.)

appreciate all the help,

philip

philski

Anyone know where to get a stub tube like this?

fietsbob

aluminum tube stock is in my Hardware store 6061 I think .. bigger metals seller will have in 40 foot lengths

or how ever long the trailer is, to trasport it as maximum length..

longer if you hang a red banner on the overhanging length.

aircraft spruce , May , I've never ordered ... just used site data for examples ./.

since I'm fine with trekking bars .. the Mittlenmeyer I bought is unneeded, wannabuy?

philski

Not so much the tube, but the integrated assembly....

fietsbob

I suspect It's someone else's mechanical creativity that made that piece ..

If you are short on that skill, and tooling, , you have to hire someone so equipped.


Machine shop - frame builder ..

Such as: find a long stem and Cut it up, and then graft on a 7/8" tube ..

Im gussing they may have done that..

philski

I was able to dig up an adjustable stem adapter from my recumbent days, should do the job for mounting the grip shift at least temporarily.
Next step is building the wheel. And then seeing about making some custom job to replace the shifter.

philip

Wanderer

B-Dop Cycling has a Super Delux bar extender that might be of some use here .... Generally used to mount other stuff, but certainly stout enough for this purpose.