An old thread, but I'm also curious to hear from others about this
Ram/Hetre love child. I'm looking at acquiring a used Ram, and like to hear
about how this might turn out.
I've seen pics of the match- physical clearance seems to be quite good. I'm
interested in whether the riding
On paper, the Sins brake post extender should work:
http://www.sinz-racing.com/product/SBPE-01.html
They're even MUSA, but as long as I've pondered them, I never pulled the
trigger.
Daniel
On Nov 4, 2012 1:09 AM, IanA attew...@gmail.com wrote:
I'm wondering now if there is a way to convert a
Although a frame can handle a larger tire, the larger tire will raise the
bottom bracket height, and that may or may not affect the handling. If you
want the same bottom bracket height with wider tire, then you'll have to do
a conversion.
For example, the Rambouillet might have been designed for
I'm wondering now if there is a way to convert a canti frame/fork designed
for 700c? Without moving canti studs or creating a method of mounting the
canti's lower with some sort of Frankenstein's bolt on arrangement I guess
it's not feasible? Probably not necessary as most 700c canti frames
On Sunday, November 4, 2012 4:09:13 AM UTC-5, IanA wrote:
I'm wondering now if there is a way to convert a canti frame/fork designed
for 700c? Without moving canti studs or creating a method of mounting the
canti's lower with some sort of Frankenstein's bolt on arrangement I guess
it's not
On Sunday, November 4, 2012 2:11:27 PM UTC-5, Leslie wrote:
On Sunday, November 4, 2012 4:09:13 AM UTC-5, IanA wrote:
I'm wondering now if there is a way to convert a canti frame/fork
designed for 700c? Without moving canti studs or creating a method of
mounting the canti's lower with some
650b rim diameter is 584mm. 700 is 622mm. Not sure that you'd get even 1cm
extra height from the difference in tires. You might be dropping the BB
the best part of 2cm. That's probably pedal strike territory. .
On Tuesday, October 30, 2012 3:48:33 PM UTC-6, ttoshi wrote:
I'm thinking
On Wed, 2012-10-31 at 08:33 -0700, IanA wrote:
650b rim diameter is 584mm. 700 is 622mm. Not sure that you'd get
even 1cm extra height from the difference in tires. You might be
dropping the BB the best part of 2cm. That's probably pedal strike
territory.
People have done 650B conversions
I am afraid that Ian is right. I have measured the circumference of my
wife's 700cx28mm wheel and my 650bx42mm (hetre) wheel using the rolling
test diagramed in user manual of every cyclometer, and here are the results:
1. 700c wheel with 28mm Clement 28mm tire: 2110mm
2. 650b wheel with 42mm
On Wed, 2012-10-31 at 08:47 -0700, franklyn wrote:
I am afraid that Ian is right. I have measured the circumference of my
wife's 700cx28mm wheel and my 650bx42mm (hetre) wheel using the
rolling test diagramed in user manual of every cyclometer, and here
are the results:
1. 700c wheel with
Easiest way in my mind is to measure diameter of each wheel/tire with a
tape measure and divide the difference by two* (accounts for above and
below the axle) to find out how much height is gained or lost If Franklyn
doesn't mind measuring, that would be very interesting. The other issue,
Hi Toshi,
I just tested the fit of my Bleriot's Hetres on my Ram and they fit just
fine, with room for fenders. The resulting bottom bracket height is
~260mm. My Hetres on Synergy rims measure ~670mm in diameter. The new
brake reach for 650b wheels is ~72mm-74mm on the Ram, so I think Paul
On Wed, 2012-10-31 at 09:27 -0700, IanA wrote:
The other issue, even if pedal strike is not exacerbated, is going to
be if the Hertes fit in the frame/fork anyway, as there could be
clearance issues due to width.
That is indeed a legitimate concern. Of course, if Hetres won't fit
there are
The effective decrease in bb height per the figures below would be
insignificant:
2110/3.14=672 diam
2094/3.14=667 diam
672-667=5 mm difference in diam
3 mm/2 = 2.5 mm diff in radius
When I ran 60 mm 559 Big Apples on 23 mm rims they measured about 26.25 in
diameter (tho' my measuring method
Toshi,
Please keep us updated if you do this. I'd love to see how it turns
out.
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Steve,
Thanks for catching my brain fart. Of course, the 16mm circumference
difference becomes 2.5mm delta in radius. I think this is about right.
best,
Franklyn
On Wednesday, October 31, 2012 8:52:24 AM UTC-7, Steve Palincsar wrote:
On Wed, 2012-10-31 at 08:47 -0700, franklyn wrote:
I am
260mm of BB height is pretty good. My wife had a Serotta 650b
conversionhttp://www.flickr.com/photos/franklyn/sets/72157607283818496/that
had 255mm BB height. With 165mm cranks she rode it for thousands of
miles without ever a pedal strike.
best,
Franklyn
On Wednesday, October 31, 2012
Somewhere, Grant mentioned that he didn't think of the Ram as a good
candidate for doing a 650b (don't remember if it was in an email to me or
in a Reader), but it was due to its BB drop; however, I think that was more
around assuming a MaxyFasty or maybe a Col de la Vie I've also
Thanks Jay, Franklyn, Arthur and many others for all the advice and
feedback. I bought my Hetres today (Jitensha studio in Berkeley) and
should be able to get it together for a test spin this weekend. I'll post
an update.
Thanks,
Toshi
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On Wed, 2012-10-31 at 11:23 -0700, franklyn wrote:
Steve,
Thanks for catching my brain fart. Of course, the 16mm circumference
difference becomes 2.5mm delta in radius. I think this is about right.
It's beginning to look a lot like this conversion will work!
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