Columbia Convertible Commuter *FINISHED*

[Chad T]

Hmmmm...yeah that's probably not going to clear a fender. Super short reach too.

There is this u-brake that functions like that but you'd have to fab a center mount for it.

Good news is it's cheap.


http://www.jensonusa.com/!jVAVfykI5...dium=organic&gclid=CMLHworH_MUCFQ8paQodUqUAig

Edit: You actually wouldn't have to fab an adapter if you could find one of these. It's called a u-brake adapter or mount.

 

[SILVERKINGPC]

A "notched" fender may be a solution if the tire clears the brake arms. It would be a last resort to have to cut em... Maybe also check tire/brake arm clearance w/o the fender on 1st...... Looking really good!

 

[Fv2]

A "notched" fender may be a solution if the tire clears the brake arms. It would be a last resort to have to cut em... Maybe also check tire/brake arm clearance w/o the fender on 1st...... Looking really good!

+1 agree with fender notch,specially if you can make it just wide enough for brake movement

 

[Flying Sheepdog]

SWEET TANK! I have a Columbia Firebolt (Mens) I'm wanting to do a Green Hornet "Black Beauty" Theme. This would be awesome.

 

[The Renaissance Man]

Hmmmm...yeah that's probably not going to clear a fender. Super short reach too.

There is this u-brake that functions like that but you'd have to fab a center mount for it.

Good news is it's cheap.


http://www.jensonusa.com/!jVAVfykI5...dium=organic&gclid=CMLHworH_MUCFQ8paQodUqUAig

Edit: You actually wouldn't have to fab an adapter if you could find one of these. It's called a u-brake adapter or mount.

Yep, I had followed that trail a couple of weeks ago but never did find a source for the adapter plate. Even if I could find it, it's still a guess whether or not it would work until I get one in my hands. I might be able to call around this week and find someone who sells the lateral pull TT brakes to get some measurements.

Thanks for the suggestions.

A "notched" fender may be a solution if the tire clears the brake arms. It would be a last resort to have to cut em... Maybe also check tire/brake arm clearance w/o the fender on 1st...... Looking really good!

I'm definitely not above cutting the fender!

 

[The Renaissance Man]

Back to the bottom bracket adapter.

The few thousandths that I had machined away did the trick! One side was a little tighter than the other, but it went together. When I remove it again, there is still just a little bit of grinding needed for one of the bolts to have a clear path across the shell.

Little by little...

 

[gowjobs]

Glad to hear that worked out for you.

 

[LukeTheJoker]

Looks good in there! Must be glad to have that done!

Luke.

 

[The Renaissance Man]

Wow looking good. This will be one sexy commuter. You got the tires tucked in the fenders just right. Can't wait to see some cranks on there. I think a lot of the "donk" look you were seeing is mostly the lack of cranks. All bikes look kind of naked like that without cranks on them.

You were right. I was finally able to mount the crankset and it looks much better.

There is still a lot of hardware to add, but at this point it weighs in at 24 lbs.

 

[LukeTheJoker]

Very cool, and will no doubt be pretty fast too...

Luke.

 

[gowjobs]

Really digging the skinny cruiser look, and you'll never have to worry about scraping a pedal in the corners.

 

[The Renaissance Man]

The crankset and hub is a SRAM DualDrive™ setup. The DualDrive combines a three speed internally geared hub with an eight speed cassette controlled by a derailleur and a single chainring for a total of 24 speeds.

This is the second time for this to appear in the build off. The first time was in BO-8 on my Yamaha that I abandoned.

 

[GuitarlCarl]

That's pretty cool, I've never seen that drive setup before.
Let us know how well it performs.

Carl.

 

[RustySprockets]

Explain how that functions, please. One shifter--two cables? The photos I could find seemed to show only one cable between the grip selector and the click-box.

 

[Kevin Kanouff]

Looks like there is one cable to the hub ("click box" in the video) and one to the derailleur.

I found this video:
https://www.youtube.com/watch?v=L4ZlZToLfas
Looks like the click box is not installed yet in pic above from TRM.

 

[The Renaissance Man]

Explain how that functions, please. One shifter--two cables? The photos I could find seemed to show only one cable between the grip selector and the click-box.

There are two cables. One is as described in the video above and the other goes to the derailleur and operates normally. I have the two in one grip shift/click shift like the video shows, but I have ordered another set of grip shifters for left and right hand shifting. I think that I will like that set up better.

 

[Flying Sheepdog]

The crankset and hub is a SRAM DualDrive™ setup. The DualDrive combines a three speed internally geared hub with an eight speed cassette controlled by a derailleur and a single chainring for a total of 24 speeds.

This is the second time for this to appear in the build off. The first time was in BO-8 on my Yamaha that I abandoned.

That is awesome. I like that idea for the hills out here.

Sent from my SGH-T399 using Tapatalk

 

[Flying Sheepdog]

There are two cables. One is as described in the video above and the other goes to the derailleur and operates normally. I have the two in one grip shift/click shift like the video shows, but I have ordered another set of grip shifters for left and right hand shifting. I think that I will like that set up better.

I really like your style of bike design.

Sent from my SGH-T399 using Tapatalk

 

[kingfish254]

Sweet drivetrain!

I remember that Yamaha. Any chance of that build coming alive again?

 

[Chad T]

Love that drive setup! Was thinking that front sprocket was small but now it all makes sense. Very trick.

24lbs is good. Can probably keep it under 30lbs pretty easy.