Current Projects chat and miscellany

Thanks !

Surely this configuration is inferiour (all aspects considered), otherwise it would still be widespread today?

It's messy. And heavy.
But, it has a few other advantages compared with the standard crossover drive.

A standard crossover at the stoker BB is constantly trying to twist off the stoker's BB; one side is pulled forward by the captain, the other side is pulled back by the reaction to the driving load. Stoker BBs take a lot of abuse because of this. An unconventional crossover at the captain's BB is mostly pulling the BB rearward with only a small torsional load and also brings one of the derailleurs closer to the captain who has control of it. That means they can better trim it (although unnecessary given the chainline) and shift it (more difficult on a tandem when you need to coordinate the drop in effort).

Single-side drive is the best from an engineering point of view (at least in my opinion), but it's difficult to do unless you either run a hub gear/SS/fixed or are willing to relinquish the inner position of a triple. Sheldon can direct you to this article which goes through an interesting single-side drive design.

Holy mother of chainring bolts :O

new seatpost thanks @Kang
WIP

Step 1

Step 2

You replaced an entire flange? Glued it in or pressed? Wonder how this is going to hold ;P

Not at all, it's just smaller now, look, you can still see the old holes
I only have to chamfer the holes polish a bit and build the wheel.

Woop woop, hope you're happy with it!
Also, you made a great job on my old hub!! Congrats!

Now that's a current project. HAT!

Thank's agane Kang I'm so happy yes !
now Step3 done

-Rule number 2: Never buy new stuff when you can fix things.

Awesome!

Awesome. You bought yourself a new drilling toy recently or what? ;)

Not yet but I'm working on it
cheers

Gaston fantastic job! This is impressive repair work.

In these pictures the difference in flange radii is much more clear. Didn't even notice it in the first pictures. Impressive stuff indeed.

Mack's second life

Beautiful! How many bikes do you have atm? :P

Thank's around 7

WOW! this is amazing work! so "simple" and so good

I though at least the triple of that haha.

So what's to stop the unmodified flange failing in the same way that the repaired side failed? Having had one Mack hub let go on me through a catastrophic flange failure, I'd be keen to avoid having it happen.

It will probably fail sooner or later. Nothing to stop it.

very cool!

Where are gone all the others ? Wich ones do you keep ?

Swapped out my Thorn for a Brother Kepler. Ordered some ahead bullmoose but not arrived, will cut steerer (probs) once bars are fitted/ridden a bit.

Rides great, loving the bigger tyres already. These are 40c and looks like plenty of room so might get some 42c GK SK (heard they size up large)

Rear mech was fine on Thorn but now catching on the cassette in some gears. Does anyone know if 11 speed mtb is compatible with 10 speed dynasys? So confused by Shimano compatability. Would like to run a current XT mech but would also like to keep it 10 speeed.

Would also like a hope or CK headset if anyone has one going at good price.

#DBAD

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