Doug brings up a good point.

The most flexible thing between the pannier and the road is often/
sometimes the rack.

When riding from RBW back to my (then) home in LA on an All-Rounder, I
had a shimmy between 18-24 mph.  More weight in the front panniers and
the shimmy speed dropped, less weight and it increased.

The front rack was twisting around a vertical axis (the front of each
pannier was moving left and then right).

A switch to a Tubus front rack eliminated the vibration.  Nothing to
do with the frame.

Angus

On Aug 23, 1:51 pm, doug peterson <dougpn...@cox.net> wrote:
> My Riv is the Atlantis and it can be made "noodly" by improper weight
> placement.  Another culprit is over-loading cheap racks.  After
> changing to a Nitto big rear rack years ago, no problems in that
> area.  On a recent tour, I had the weirdest shimmy at 10-15 MPH that
> took a couple of days to run down.  I had taken to adding a bungee
> cord around the lower portion of each pannier "just in case".  Well,
> whodathunk that could cause a problem?  The front bags only had
> sleeping bag in one and tent in the other, not much weight.  By
> leaving the bungees off, each bag could wiggle a bit and the shimmy
> disappeared completely.  My guess is a harmonic developed with them
> both tight and was self-cancelling when each could move
> independently.  While not everyone needs 4 bags for volume, it gives
> you a lot of latitude in weight placement and in my experience any
> bike handles a bit better with the weight spread around.  Plus some
> extra volume is handy when you go to the grocery store.
>
> dougP
>
> On Aug 19, 11:18 pm, alexander <chmod...@gmail.com> wrote:
>
>
>
> > I'm using a custom porteur rack with low pannier mounts and some front
> > panniers that I made myself to fit the rack perfectly.  I've done week
> > long trips on the AHH with only rear panniers in the past and I can
> > really see on this trip how much it helps to move more of the weight
> > up front.  It stabilizes things quite a bit even with more total
> > weight.
>
> > Powell Butte sounds great-- I too enjoy the singletrack riding on the
> > homer hilsen.
>
> > Here's a picture for your reference:
>
> >http://photos-g.ak.fbcdn.net/hphotos-ak-snc1/hs141.snc1/5216_27213083...
>
> > I don't generally ride with the hambone bag there on the top tube
> > unless I'm in a town/city and I've stashed my panniers somewhere.
> > When I'm fully loaded, it's kinda overkill and it's generally not
> > necessary to have that easy access to the wallet/phone/keys on the
> > days with long stretches.
>
> > Also, I'm a big fan of throwing stuff on the front top shelf and being
> > able to quickly bungee it down.  It works well for drying laundry too!
>
> > thanks!
> > alex
>
> > On Aug 19, 9:48 pm, Mike <mjawn...@gmail.com> wrote:
>
> > > Alexander, good to hear your Homer worked well on tour. What front
> > > rack were you using? Did you have front panniers?
>
> > > I've taken my Homer on plenty of dirt roads, up and down, but never
> > > really rode singletrack with it. I took my front and rear racks off
> > > but left on the big 700x41 Schwalbe Marathons I used for the tour and
> > > hit up the singletrack at Powell Butte today. Man, were the trails
> > > great and the bike handled really well. I've ridden by Powell Butte
> > > tons and tons of times on my way out to do long road rides but never
> > > stopped to really explore all the singletrack there. It totally
> > > reminded me of China Camp down in the Bay Area. Homer is definitely
> > > the do all bike.
>
> > > Have fun on the rest of your tour!
>
> > > On Aug 19, 5:45 pm, alexander <chmod...@gmail.com> wrote:
>
> > > > I just did a ~1500 mile loop up the pacific coast and around the
> > > > olympic peninsula on a fully loaded AHH and I thought it did really
> > > > well.  I too experienced a little bit of a wobble on a couple
> > > > occasions but I found that it was just indication that I had weight
> > > > improperly placed and distributed. At one time, I had too much weight
> > > > (firewood) high up above my rear panniers and on another I had too
> > > > much weight on the front portion of the shelf of my front rack (in
> > > > front of the axle).  Keeping things down low and well distributed
> > > > yielded a great handling bike that even did well on unpaved, rocky
> > > > trails.
>
> > > > I'm about to head east from Portland OR to new york and I wouldn't
> > > > hesitate to tour anywhere on the homer hilsen.. except maybe down the
> > > > entire length of the Great Divide.
>
> > > > Note that I'm a fairly light rider at around 145lbs with gear that
> > > > probably never exceeds 45lbs
>
> > > > On Aug 17, 1:10 pm, Brian Hanson <stone...@gmail.com> wrote:
>
> > > > > Mike - how much weight on the Hilsen?  Was it wobbly in specific
> > > > > situations?  Interested in more detail as I'll be doing this sort of 
> > > > > thing
> > > > > with a Hilsen.  BTW - great trip photos.  Looks like it was a great 
> > > > > time!
>
> > > > > Brian
>
> > > > > On Mon, Aug 17, 2009 at 10:55 AM, Mike <mjawn...@gmail.com> wrote:
>
> > > > > > Yesterday my friend Dylan and I finished up 8 days of cyclotouring
> > > > > > through WA and OR. We managed to roll through portions of Gifford
> > > > > > Pinchot NF, Mt Hood NF, Deschutes NF and the Willamette NF. We 
> > > > > > totally
> > > > > > veered from our planned route which would have kept us in and around
> > > > > > the GPNF but due to poor weather we changed plans and headed south.
> > > > > > The hight point of the trip was day 6 when we took back roads from
> > > > > > Madras to just below the summit of McKenzie Pass. I had been wanting
> > > > > > to climb the pass ever since moving to OR and was not disappointed. 
> > > > > > We
> > > > > > stayed at a beautiful and serene campground--Lava Lake. The next day
> > > > > > we got on the road at 7am and summited McKenzie Pass where we had 
> > > > > > epic
> > > > > > vies of the surround mountains and lava fields from the Dee Wright
> > > > > > Observatory.
>
> > > > > > My Hilsen handled well although next time I tour like this I'll be 
> > > > > > on
> > > > > > a dedicated touring bike. At times the Hilsen felt a little too
> > > > > > noodly. I was absolutely floored by the performance of my Schwalbe
> > > > > > Marathons (700x41)--they were great. I expected them to feel dead 
> > > > > > but
> > > > > > they were fine.
>
> > > > > > We averaged like 82 miles a day. Our shortest day was like 65 miles
> > > > > > and the longest 107. I can't wait until the next tour. Although we 
> > > > > > had
> > > > > > poor weather which was a bummer the GPNF seems to offer endless
> > > > > > cyclotouring opportunities for people living in Seattle or Portland
> > > > > > and everywhere in-between.
>
> > > > > > My camera crapped out for part of the trip so I don't have photos 
> > > > > > from
> > > > > > day 5 and only a few from day 4 and 6.
>
> > > > > >http://www.flickr.com/photos/41335...@n00/sets/72157622065862878/
>
> > > > > > --mike- Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
>
> - Show quoted text -
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