If the bike is optimized for 26 x 2.1 tires, you won't get the real benefit of going to 650b IMHO. If you could only fit skinny 650b tires, I don't think it's worth it. I converted my Schwinn Moab bc it fit 650 x 47 tires, which drastically improved the ride.
- Fred, Mount Prospect, IL Dare I say this thing rides as nice as my Bleriot: https://i.imgur.com/yqNJsvQ.jpg On Wednesday, August 28, 2024 at 11:19:33 PM UTC-5 iamkeith wrote: > ...I meant to say that it won't materially affect your "steering" > geometry. If the overall diameter doesn't change, the trail calculation > doesn't change. Additionally, there's a "pneumatic" trail effect, where > a fatter tire feels like it has more trail. So a slightly taller tire with > less volume might feel exactly the same. > > But it will most definitely impact you "handling." The smaller wheels > have a lower gyroscopic center of gravity, and more stable handling as a > result. They also have less inertia, and are easier to accelerate. (The > flip side is that they don't carry speed/momentum as well, but that's not > such an issue on paved surfaces as it is on rocky trails.) > > Keep in mind that this all assumes that you are using high-quality, > lightweight, supple tires and tubes, filled with weightless air. in such > case, the rim is the heavy part of the wheel. If you were comparing heavy > tubes and tires on a 26" setup to lightweight tubes and tires on a 650b > setup, then it's not really a fair comparison. > > On Wednesday, August 28, 2024 at 9:49:05 PM UTC-6 iamkeith wrote: > >> If you want my opinion, I can't imagine why in the world you'd want to do >> this. I have 26" bikes, 650b bikes and 700c bikes, but I rarely ride >> anything but the 26" bikes. They are just better in every possible way... >> except perhaps aesthetics... to some people, but not me. (I'm speaking of >> road bikes, not mountain bikes, where the bigger wheels actually do have an >> advantage.) I agree that it won't materially affect your handling. In >> most cases, what it will do is simply limit the size of the tire you can >> fit, so that you basically have the same overall diameter wheel but have to >> deal with harsher-riding, more-inflated tires as a result. And your >> braking power will be reduced, because you have less leverage at the brake >> arm. (At least for cantis.) If by some chance you CAN fit a taller >> overall wheel, you'll have a higher bottom bracket and higher center of >> gravity and reduced stand-over clearance - all of which are negatives to my >> way of thinking - but especially on a loaded touring bike. You have fewer >> tire choices in 650b than 26". If you have 135mm rear end spacing and QR >> dropouts, high-end 26" wheels are relatively easy to find on the second >> hand market (or in bike coops/shops, if you're on tour) because they >> dominated the mountain bike market for so long. Finding good, im-brake >> 650b rims/wheels is already a challenge. >> >> On Wednesday, August 28, 2024 at 12:17:26 PM UTC-6 >> [email protected] wrote: >> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> For sure when I did a 700 C X 25mm to 650b 38/42 mm I noticed no >>> difference >>> >>> >>> >>> >>> >>> >>> >>> Yours sincerely, >>> >>> >>> >>> >>> Bernard F. Duhon >>> >>> *From:* Will Boericke <[email protected]> >>> *Sent:* Wednesday, August 28, 2024 12:32 PM >>> *To:* Bernard Duhon <[email protected]> >>> *Cc:* 650b <[email protected]>; [email protected] >>> *Subject:* Re: [650B] 650b on 26" frame - promax p-1 brakes >>> >>> >>> >>> I am skeptical of the >>> wheel-size-dramatcially-affects-geometry argument. I can only argue from >>> analogy - my gravel bike wears 700x42 normally, but I am equally happy on >>> 650x48. Crank strike is more of an issue, but I just watch out for that >>> and use crank boots. BB is definitely lower, but I honestly don't really >>> notice. I notice no difference in handling, other than maybe slightly >>> snappier steering. >>> >>> >>> >>> Will >>> >>> >>> >>> On Wed, Aug 28, 2024 at 11:04 AM Bernard Duhon <[email protected]> >>> wrote: >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> I have a 26 inch Waterford built touring bike (similar to a Riv Atlantis >>> before they went all in on the long chain stays) >>> >>> >>> >>> 650b will fit and the XTR v brakes will work. Richard Schwinn mentioned >>> that it would alter the steering and mildly recommended against it. The >>> bike was designed for a 26 X 1.6 inch tire. I have a chart that shows the >>> difference in will circumference is just a few millimeters. 640mm V 670mm. >>> However we know that just a few millimeters change of frame geometry is a >>> big deal. >>> >>> >>> >>> Other than availability of tires/fendors (can’t fit larger than actual >>> 26 X 47 mm tire) >>> >>> >>> >>> what advantage do you see on either the handling/speed/bump roll over of >>> the changeup from's 26 to 650 B >>> >>> >>> >>> thank you, ye of more experience than I. >>> >>> >>> >>> >>> >>> >>> >>> Yours sincerely, >>> >>> >>> >>> >>> Bernard F. Duhon >>> >>> >>> >>> *From:* [email protected] <[email protected]> *On Behalf Of *Will >>> Boericke >>> *Sent:* Tuesday, August 27, 2024 7:44 PM >>> *To:* 650b <[email protected]> >>> *Subject:* Re: [650B] 650b on 26" frame - promax p-1 brakes >>> >>> >>> >>> I built a 650b on 26 Trek 850 frame with the Chinese version >>> <https://www.aliexpress.us/item/3256805371290100.html?spm=a2g0o.order_list.order_list_main.85.17ca1802hZwxq7&gatewayAdapt=glo2usa> >>> >>> (maybe the same thing?). They worked really well. Granted, I sold the >>> bike pretty quickly. >>> >>> >>> >>> Will near Boston >>> >>> >>> >>> >>> >>> On Monday, August 26, 2024 at 11:00:13 AM UTC-4 [email protected] >>> wrote: >>> >>> Yes, I'm using on a 1990-ish (non-U-brake era) Diamond Back Ascent >>> basket bike. I haven't shredded with it, but they stop my schlubby self and >>> cargo with aplomb. I imagine that it will be even better when I get around >>> to Kool Stops >>> >>> >>> >>> RF >>> >>> On Monday, August 26, 2024 at 6:59:56 AM UTC-5 [email protected] >>> wrote: >>> >>> Yes I have used them for this purpose on '89 Trek 950. >>> >>> Originally, had Tektro cantis (CR720s) which looked great but they >>> worked only ok due to where I could get the pads to align on the rim. >>> Swapped in these Pro-Max v brakes (108mm, silver version) and the braking >>> dramatically improved as they offered better range to get pads in better >>> position, plus v brake leverage/power. >>> >>> These are a great option. Highly recommend. >>> >>> Josh Z >>> >>> >>> >>> On Mon, Aug 26, 2024, 4:40 AM chintan jadwani <[email protected]> >>> wrote: >>> >>> Has anyone tried the promax p-1 v-brakes >>> <https://www.promaxcomponents.com/product/bmx-brake-p-1> on a 26" to >>> 650b conversion? >>> >>> They have about 35mm of vertical brake pad adjustment so probably they >>> should work... >>> >>> >>> >>> From what I read, they are similar (cheaper and less premium) to the box >>> three v-brake <https://boxcomponents.com/products/box-three-v-brakes>. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "650b" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/650b/8332773a-bd54-416f-a4b3-b598ba97fb26n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/650b/8332773a-bd54-416f-a4b3-b598ba97fb26n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "650b" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/650b/ae36f0ea-2eb5-4b12-88b7-a3ee96839545n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/650b/ae36f0ea-2eb5-4b12-88b7-a3ee96839545n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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