Mavic 26"MTB to 700C caliper adjusters

AndyM said:

Has anyone had any experience of these? Here's a link to the Mavic page
http://www.mavic.com/servlet/srt/mavic/asph-prod_fiche?product.id=165&lg=uk

I'm considering using these in converting my MTB to a commuter, can
anyone see any potential problems?

Interesting, I've not seen anything like that before. The immediate
question that springs to mind though is why bother moving to 700c
wheels at all? Sounds like a lot of faff, and expense, for a pretty
ambiguous benefit.

26" wheels can be excellent for commuting, just swap the tyres for
something tarmac specific.

I use a "roadified" Specialized Hardrock MTB as a commuter/hack bike
and it works very well on 26" wheels. Rugged and fast, ideal.

I generally use Specialized Fatboys, they're full slicks, run at
100psi, and are excellent tyres for this kind of use, imv. For a
change I've just replaced them with a pair of Conti Sport Contact
1.3's. They also seem good, but I've only put 50 miles on them as yet,
so jury's still out.

Other modifications were to (of course) change the front suspension
fork to rigid, and then remove front mech and shifter, and fit a
single ring chainset. It's works very well.

Is there a particular reason you want to fit 700c wheels?

"Bob"

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It was really more as a possible alternative to changing the
chainrings/crankset on the bike. I thoughtthat they would affect the
gearing and possibly squeeze a little extra speed for the same rpm. I
have checked on Sheldon Brown's (thank you, Mr Brown!!) gear calculator
thingy and there seems to be a fairly small increase in speed using
700C wheels. Are 700C wheels really that much more delicate, I don't
know, but it is a point as the roads I ride here in this part of Japan
aren't up to much, despite one being a major national road, a sort of A
road I suppose. Currently I have some IRC 1.5" slicks that are quite
nice (go faster red ;-)). Not planning to go to single ring as there
are a few hills on one of the routes (around 1200m) and I'm not that
fit!!!

AndyM

AndyM said:

Has anyone had any experience of these? Here's a link to the Mavic page
http://www.mavic.com/servlet/srt/mavic/asph-prod_fiche?product.id=165&lg=uk

I'm considering using these in converting my MTB to a commuter, can
anyone see any potential problems?

These double the bending moment on the cantistuds. However as brazed on
centrepulls (using basically the same pivot with longer arms) didn't
fall of they might be ok. It certainly will be more flexible, unless you
can find a way to connect them to the fork-arch

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Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl

AndyM said:

It was really more as a possible alternative to changing the
chainrings/crankset on the bike. I thoughtthat they would affect the
gearing and possibly squeeze a little extra speed for the same rpm. I
have checked on Sheldon Brown's (thank you, Mr Brown!!) gear calculator
thingy and there seems to be a fairly small increase in speed using
700C wheels.

Hmm, that does sound a bit "sledgehammer to crack a walnut". If you
just want a bigger gear I'd think the easiest option would be a larger
chainring, or perhaps look at swapping the rear cassette, if that
isn't geared as high as it could be. You may need to also alter your
chain length doing that, but that's surely a better approach than
swapping your wheels, along with all the alignment, clearance and cost
headaches that would bring.

Do you happen to know what sort of average cadence you maintain? Given
some time and a bit of practice it's quite easy to get used to 90 -
100rpm and this can have a big effect on your speed if your usual
cadence is some way below that. Increase your cadence and you might
not have to tinker with your gearing at all.

Quoted message said:

Are 700C wheels really that much more delicate, I don't
know, but it is a point as the roads I ride here in this part of Japan
aren't up to much, despite one being a major national road, a sort of A
road I suppose.

Well, all other things being equal, 26" wheels will be a bit more
robust than 700's, but it'll make little practical difference. /Good/
wheels in either size are bloody strong things, and unless you are
very heavy, or intend to thrash the [censored] out of 'em, either size would
stand up just fine to rough roads.

Quoted message said:

Currently I have some IRC 1.5" slicks that are quite
nice (go faster red ;-)). Not planning to go to single ring as there
are a few hills on one of the routes (around 1200m) and I'm not that
fit!!!

Crikey O'Riley, I agree, single ring may not be suitable for that
terrain. 🙂

"Bob"

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