« 10 Wheeled Bike | Main | Should I Stay or Should I Go? »

06/06/2017

Comments

Feed You can follow this conversation by subscribing to the comment feed for this post.

Champs

There's a braze-on for a chain tensioner on the tube between the bottom brackets, but I'm guessing esoteric replacement parts for basic bikes are either expensive or nonexistent.

I wouldn't recommend this, but I admire the flair and it's probably fine for the application. Stop pedaling if you throw the ring, and even that might not matter if the upper (drive) tension doesn't sag. If you do the sort of riding that bike implies and avoid rough roads, it probably won't come to that anyway.

Innes

My brother-in-law used one to get the tension right on a fixie he built from a frame with vertical dropouts. It worked, and looks cool but he did say it gave the bike a curious 'spongy' feel when you pedaled.

Alan Braggins

Also known as a "ghost" or "phantom" chainring.

https://www.sheldonbrown.com/tandem-build.html

User1

Heads up all you tall-bike tinkerers out there. This could save your life some day!

Kagi

I have that same Columbia tandem. It's a POS. That said, if the chain tensioner wheel went missing, it really wouldn't be difficult to rig one up using a derailleur jockey wheel, which you'd almost certainly be able to get hold of, if you have access to a loose chainring. So I really don't see the point of this hack.

Bicycle Bill

I've seen this used on the linking chains on multi-seat bicycles (triples and quads) before, as well as on long-wheelbase recumbents like the original Linear.

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been saved. Comments are moderated and will not appear until approved by the author. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Comments are moderated, and will not appear until the author has approved them.

Your Information

(Name is required. Email address will not be displayed with the comment.)

Loading

Enter your email address:

Delivered by FeedBurner

Cool Stuff

insert title insert title insert title insert title
Blog powered by Typepad
BikeHacks Flickr Pool

Roy Tanck's Flickr Widget requires Flash Player 9 or better.

Get this widget at roytanck.com
Rent a Bike in Central Park Click Here