The standard 6 speed Brompton has a gear range of 33 - 100 gear inches so just above a 300% range. The -12% runs 29 - 88 gear inches. I have one of each of those currently.

Robert Tilley
San Diego, CA

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From: westerh...@gmail.com
Sent: June 21, 2020 4:01 PM
To: rbw-owners-bunch@googlegroups.com
Reply-to: rbw-owners-bunch@googlegroups.com
Subject: [RBW] Re: Travel bikes

Bill, 

I think that depends upon how you have both bikes set up. The Brompton is available with 1to 6 gears, and i think the BF is available with 1 to 21 gears, with widely varying ratios., 

In my case I have a 6-speed Brompton (3-speed internal plus a 2 speed freewheel), my friend's BF has 18 gears (3 speed internal plus a 9 speed cassette). I've not checked the actual gear inch range of both, but my seat of the pants feeling is that the overall range is similar, but with bigger jumps between gears on the Brompton, and that both have pretty wide range gearing suitable for most types of terrain one would likely encounter -- similar to what i'd regard as a well set up "regular" bike. 

It is of course possible to get either with very different gearing, so...

Julian Westerhout
Bloomington, IL 





On Sunday, June 21, 2020 at 3:50:19 PM UTC-5, Bill Schairer wrote:
Julian,
Do the Bromptons have the same gear range as the BF?  The only folder I’ve ever ridden is my BF NWT with gearing range comparable to my “regular” bikes.  I’ve been under the impression, possibly false, that most folders don’t have that capability.  As far as folding and unfolding, I have no comparisons to make but, as I mentioned earlier, I folded and unfolded my BF every day when I used it for a commuter, which is to say it was easy enough that it didn’t discourage use.  I believe mine even required an additional step from the normal process.  Now, if I were to go out and try to fold mine now, I would fumble around a bit but if one is doing it regularly, it really isn’t any big deal.

Bill S

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