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]<mailto:[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]<mailto:[email protected]> 
<[email protected]<mailto:[email protected]>> On Behalf Of Will Boericke
Sent: Tuesday, August 27, 2024 7:44 PM
To: 650b <[email protected]<mailto:[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]<mailto:[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]<mailto:[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]<mailto:[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>.
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