Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-09 Thread Garth
Well heck, if you need to use a device to keep the chain on why not just use a derailler ? If a shifter and a cable is just too much to deal with Better off with a single speed. . . lol. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunc

Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-09 Thread Steve Palincsar
On Sun, 2011-10-09 at 09:53 -0700, charlie wrote: > Finally something making a little sense..I can't see any chain > coming off a chain ring assuming there is tension from the rear > deraileurI've been scratching my head wondering what the heck all > the chatter is about. There have been qu

[RBW] Re: 2x7 AHH, no front derailer

2011-10-09 Thread charlie
Finally something making a little sense..I can't see any chain coming off a chain ring assuming there is tension from the rear deraileurI've been scratching my head wondering what the heck all the chatter is about. There have been quite a few 1x5's 1x7's 1x9 set ups made over the years and

Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-09 Thread Jeremy Till
Are you using the stock rings on the crankset? If you decide to go the derailerless route I'd make sure you were using singlespeed specific rings (which you should be able to get in both 32t and 42t) or old rings from the era before there were ramps and pins and "profiled" teeth. Having unifor

Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-08 Thread Joe Bernard
I hear ya about the bumpity-bump. I don't plan on any major mountain biking, but it IS a country bike, and China Camp IS part of a loop I ride. Riding one of the calmer trails there is a possibility, which tells me I'm gonna wish I had mounted that derailer. Thanks for the feedback, folks. --

Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-08 Thread David Yu Greenblatt
I concur. If you ride the bike only on smooth roads you should be fine, but if you ride on bumpy surfaces you will eventually drop the chain. I run a single chainring on my 29er MTB and on my cyclocross racing bikes, with inner and outer chainguards. Without the guards I would drop chains all the t

Re: [RBW] Re: 2x7 AHH, no front derailer

2011-10-08 Thread PATRICK MOORE
I'm inclined this way, too, at least for shorter distance vehicles: have my trike set up currently as a 1X7 (the seven sp only because that's what the thing came with and it's a jolly pain to remove the freewheel: have to remove the left axle to do so. I expect I'll eventually go to a 1X5 with 100-

[RBW] Re: 2x7 AHH, no front derailer

2011-10-07 Thread Joe Bernard
*Why the aversion to a front derailleur? * ** Simplicity, clean looks, the likelihood that I'll stay in a harder gear longer instead of downshifting, the chance to stop and stretch at upshift/downshift points. * * -- You received this message because you are subscribed to the Google Groups "R

[RBW] Re: 2x7 AHH, no front derailer

2011-10-07 Thread benzzoy
Many years ago, I tried this on a mountain bike. It didn't work well precisely because of what Allan in Portland mentioned, that is the normal/routine bumps and jarring can derail the chain, sometimes at the most inopportune time. Because my mountain bike at that time had a 11-28, the chain had t

[RBW] Re: 2x7 AHH, no front derailer

2011-10-07 Thread Joe Bernard
The more I think about it, the more I think it'll work ok. I'm not going to use a shorter spindle - the BB spec'd for these is already pretty short - so the two remaining rings will still be in the same position relative to the freewheel, and I already use the 32 to cover the complete range. I'm

[RBW] Re: 2x7 AHH, no front derailer

2011-10-07 Thread Cyclofiend Jim
My initial reaction was "I'd be a little wary", but as I think about it, I'm not sure why. There's no intrinsic reason I can come up with. The FD might help to keep the chain on, and I do know folks who still have one in place with a single ring setup to use as a chain keeper. There are prob

[RBW] Re: 2x7 AHH, no front derailer

2011-10-07 Thread Allan in Portland
Probably not, but ultimately I think depends on your chain line. I had a 9 speed cassette with a Sugino 3 ring in front. I moved the outer ring the center position, put a chain guard on the outer position, and left off the front derailer. Riding in the middle and large end of the cassette gears