28in for MUni?

Hello everybody. I know this sounds a little word, bt could you use a 28in for MUni? Would it either have to much foward momentum, or be to big to menuver? Thanks.

                                                                  Thank you,

They are nice for fairly smooth terrain (grass, ash roads) but a bit awkward when it starts to get rough.

It might be OK with long (bicycle length) cranks but I would say it was a little too big. If you have one then try it :slight_smile:

I have a 28" with 150mm cranks and it works well for light Muni. It doesn’t work as well for going over large rocks or doing climbs than a more serious Muni machine, but it will help give you a taste of what it’s like. It is especially fun going fast over rugged terrain. The momentum isn’t a problem with 150mm cranks. I have tried 125mm cranks and they’re definitely more suited for the road.

With the 2.1" tire, the 28" is actually more maneuverable than my 24x3 Gazz-equipped Muni. I can steer/jerk it very quickly using the pedals and appropriate body english. Usually I dodge the rocks on my 28" whereas with the Gazz it is sometimes easier to roll over them.

There are too many variables to answer a question like this with a “yes” or “no” answer. The variables include skill level, terrain and your definition of MUni amoung others.

I have some experience riding my 29er off road. My set-up uses a 700c rim and 29 x 2.1 tire. I’m thinking a 28" set-up also uses a 700c rim but a smaller tire - maybe a 700 x 45 cyclocross tire?

Anyway, I’ve ridden some pretty rugged trails with 177.5mm cranks installed and found it be OK but not as good as my 24 x 3.0 MUni. Not that it was bad mind you, but I would have ridden more of the rough stuff on the 24 x 3.0 tire.

Since then I’ve swapped the 177.5mm cranks for 170mm cranks and ridden on dirt and gravel roads and trails. The 29er is much lighter - by several pounds - than my 24 x 3.0 MUni and of course faster. It’s a blast to ride on rough ground as fast a possible. With 170mm cranks I can ride up some fairly steep stuff but the track needs to be pretty smooth - for me at least.

A couple weeks ago I installed 125mm cranks on the 29er and that changed things dramatically! I still ride it on dirt and gravel as much as possible and I’ve been suprised at what I can do and where I can go with it. The more I ride the 29er with those short cranks the more I like it and I’m sure my skill level has increased because of them. I’ll eventually put longer cranks back on so it will be a little better for off-road but the new cranks will be 140mm or 150mm.

Steve Howard

What do you mean by MUni? Because of where I live, much of my riding is along bridle paths/footpaths and forest tracks with few hills. There is MUni-style fun to be had on my 20, 24, 26, 28 or even the Coker. It’s just a different style of fun.

If I go to the hills, I find that a 24 with 150s or a 26 with 150s/170s is best. The bigger wheel will roll over or through more obstacles, but the smaller wheel will turn more quickly. I do more exploring on the 24 because it’s less unwieldy. I will attack deeper mud on the 26 because the larger wheel shrinks my brain…

For MUni, your limiting factors on the machine will be:
Tyre grip
Wheel diameter
Crank:wheel radius ratio (‘gearing’)

But the biggest single limiting factor is the rider’s skill. I now waltz up and down things on a 24 with 102 mm cranks which would have stopped me on the 26 with 170s a few months ago - and I’m not claiming to be good… just ‘improved’. :o

So two answers to your question:

  1. If you choose the right level of difficulty, you will have a blast on your 28, especially if you get some grippy tyres.
  2. But if you want to specialise in MUni, you will probably end up with either a 24 or a 26.

It’s a game we play… make your own rules, and have fun. (Unless one of your own rules is ‘Don’t have fun’, of course, but that seems unlikely.)

I’ve been playing around on my 26" muni with a gazz and 110mm cranks. With the Gazz i think the outer diameter moves to around 28" size if i remember wot someone here posted correctly. It’s pretty good, more like riding an mtb i guess, which is why i like it. It’s not easy to just roll up some stuff, but i think thart a bit more practice could make it very effective for fast muni, and i’m determined to start riding harder stuff on it as i would on a smaller wheel/longer cranks. I’ve done drops of about 2 1/2 or 3 feet on it and it’s been fine, if you can get some speed running up to the drop and roll out of it it feels great. It would be possible to drop higher stuff i’m sure, but theres not much point i don’t think, cos first and foremost it is for going fast. It’s ace to hammer along singletrack, through a forest or even down steps, where it is very smooth. I hate to say this guys…, actually, no, i don’t hate it, i think that more speed is the way to go in muni at the mo, as far as getting a real buzz is concerned. I just need to learn how to ride it on steeper more mountainous stuff now…

Re: 28in for MUni?

register <register.fg3wy@timelimit.unicyclist.com> wrote:

> Hello everybody. I know this sounds a little word, bt could you use a
> 28in for MUni? Would it either have to much foward momentum, or be to
> big to menuver? Thanks.

We’ve used our Nimbus II framed 29er for a bit of light Muni. It’s
a good option for reasonable off-road distances which aren’t too steep
or too technical. Pretty good for XC riding with bikes and none too
shabby at climbing - I managed to climb up onto the Ridgeway with
ours from a Thames Valley start (although I was dizzy with oxygen
debt at the top!).


Paul Selwood
paul@vimes.u-net.com http://www.vimes.u-net.com

Re: 28in for MUni?

In article <register.fg3wy@timelimit.unicyclist.com>,
register <register.fg3wy@timelimit.unicyclist.com> wrote:
)Hello everybody. I know this sounds a little word, bt could you use a
)28in for MUni? Would it either have to much foward momentum, or be to
)big to menuver? Thanks.

I use my Pashley 29" with 150mm cranks for MUni. On flat, packed trails,
you’ll be able to get lots of pictures of the guys with 24" wheels as you
wait for them to catch up with you; the thing devours easy trails.
But the real fun is on downhills; I’ve been able to ride almost anything
I’ve run into, including some pretty technical stuff. You mostly just
point it downhill and try to stay on.

With the 150’s, uphills above a certain grade become difficult-to-impossible;
I’ve improved some with practice, but I think I’ll have to go with longer
cranks to be able to ride everything I might want to.

The nice thing about a big-wheel MUni is that it’s a lot more
versatile than a 24x3; I use mine as a mini-Coker on roads and it does
pretty well in that role also.