Very short stem and fully loaded front panniers
#1
shaken, not stirred.
Thread Starter
Join Date: Aug 2006
Location: The Shaky Isles.
Posts: 5,248
Bikes: I've lost count.
Mentioned: 40 Post(s)
Tagged: 1 Thread(s)
Quoted: 1412 Post(s)
Liked 968 Times
in
388 Posts
Very short stem and fully loaded front panniers
I'm looking at steel (631) Dawes Sardar expedition touring bike to replace my old (1986) Diamondback Ascent on the local equivalent of ebay. I mainly use the bike for commuting/grocery shopping including heavily loading the front panniers. The Dawes has drop bars and my old Diamondback has riser bars.
The Dawes has a 56cm top-tube and I'd need to put a very short stem (80mm or less) on it so that I couldreach without stretching. The Dawes would be at the upper limit of what I can ride. My Diamondback is a very small frame, with a seatpost a mile high and I really need to put a long stem on it. I'm 169cm tall with a longish torso.
I can't afford to buy a new touring bike such as a Surly Long-Haul Trucker. The Dawes is currently the price of a Surly frameset. I had planned to put a long stem and drop bars and bar-end shifters on the Diamondback. Touring bikes are not common in New Zealand, especially second hand.
Would putting a very short stem on the Dawes adversly affect the handling so that it would be hard to control with full panniers?
The Dawes has a 56cm top-tube and I'd need to put a very short stem (80mm or less) on it so that I couldreach without stretching. The Dawes would be at the upper limit of what I can ride. My Diamondback is a very small frame, with a seatpost a mile high and I really need to put a long stem on it. I'm 169cm tall with a longish torso.
I can't afford to buy a new touring bike such as a Surly Long-Haul Trucker. The Dawes is currently the price of a Surly frameset. I had planned to put a long stem and drop bars and bar-end shifters on the Diamondback. Touring bikes are not common in New Zealand, especially second hand.
Would putting a very short stem on the Dawes adversly affect the handling so that it would be hard to control with full panniers?
__________________
Get a bicycle. You will not regret it if you live. ~Mark Twain, "Taming the Bicycle"
vBulletin: snafu
#2
Senior Member
Join Date: Jul 2008
Location: Atlanta
Posts: 866
Bikes: LHT
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I see on their website that they offer 3 sizes? I'm assuming you're talking about the largest size (22"/56cm). You could possibly just order the smaller size. (18" or 20")
I haven't really loaded the front end up on either bike, but hopefully this will be helpful information:
Specialized langster: shortened the 120 mm stem by 20 mm and it made the bike almost unridable because it was so twitchy (without a load)
Surly LHT: went from 100 mm stem to 70 mm stem and it rides almost the same, a little bit more responsive maybe but not dangerously so.
I can only assume that it's due to the stretched out wheel base and perhaps the fork rake of the LHT. I really haven't ridden enough frames to give you useful information on that.
If that's really the only option you have I'd imagine a wider set of handlebars would help.
I haven't really loaded the front end up on either bike, but hopefully this will be helpful information:
Specialized langster: shortened the 120 mm stem by 20 mm and it made the bike almost unridable because it was so twitchy (without a load)
Surly LHT: went from 100 mm stem to 70 mm stem and it rides almost the same, a little bit more responsive maybe but not dangerously so.
I can only assume that it's due to the stretched out wheel base and perhaps the fork rake of the LHT. I really haven't ridden enough frames to give you useful information on that.
If that's really the only option you have I'd imagine a wider set of handlebars would help.
#3
Banned
Would putting a very short stem on the Dawes adversly affect the handling
so that it would be hard to control with full panniers?
so that it would be hard to control with full panniers?
but wider bars may help.. but how you pack has the biggest influence,
Bags dangling and sloppy load is not good.
even with a load aboard,above a very slow speed, i steer from my butt.
leaning over to make the corner.. my hands do more steadying
than turning it as if the rudder tiller.. ..
maybe turn the bars to avoid going thru rubble and glass..
Last edited by fietsbob; 09-20-12 at 02:33 PM.
#4
I haven't noticed any problem on my cross-check.
#5
Randomhead
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 24,386
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 3,687 Times
in
2,510 Posts
the moment arm of your handlebars does not change much when you shorten the stem. Think about the relative distance of your hands to the center of the steerer, and you will see that pretty clearly.
#6
-
OP, if you set the handlebar high enough, the head tube angle will offset the long top tube by moving the stem rearwards at a rate of 1cm for every 3cm of stem height increase. However, I don't know if your bike will come with adequate steerer tube to raise the bar, as googling shows them to be very short. If you can raise the stem/bar, then you may be pleasantly surprised to learn you don't need as short a stem as you have guessed.
Changing to a shorter stem will make the steering feel different until you learn to operate differently, which should only take an hour of bicycling. Eighty millimeter stem length is not terribly short - Surly specs 75mm or 90mm on all complete bikes below size 54cm.
https://surlybikes.com/bikes/long_haul_trucker
Changing to a shorter stem will make the steering feel different until you learn to operate differently, which should only take an hour of bicycling. Eighty millimeter stem length is not terribly short - Surly specs 75mm or 90mm on all complete bikes below size 54cm.
https://surlybikes.com/bikes/long_haul_trucker
#7
-
#8
Senior Member
Join Date: Jul 2008
Location: Atlanta
Posts: 866
Bikes: LHT
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
There is also something to be said for translation, as stem length increases, the handlebars translate more, sometimes this larger motion gives the rider more precision. Usually it doesn't really matter, and there are certainly downhill stems that have the handlebar nearly touching the steerer tube. In those cases the handlebars are wide to give extra precision (and leverage), but they don't translate much at all. You can imagine if the bars were very short how awful it would be to control. Conversely if you had a really long stem and a narrow handlebar, that wouldn't be so bad either.
#9
Senior Member
Join Date: Nov 2008
Location: Bay Area, Calif.
Posts: 7,239
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 659 Post(s)
Likes: 0
Liked 7 Times
in
6 Posts
I wouldn't worry about it. The stem on our tandem is about that length and we've had the front rack and panniers heavily loaded for camping trips without any problems.
#10
Senior Member
Join Date: Dec 2007
Location: Canada
Posts: 920
Bikes: 2012 Masi Speciale CX : 2013 Ghost 29er EBS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I'm looking at steel (631) Dawes Sardar expedition touring bike to replace my old (1986) Diamondback Ascent on the local equivalent of ebay. I mainly use the bike for commuting/grocery shopping including heavily loading the front panniers. The Dawes has drop bars and my old Diamondback has riser bars.
The Dawes has a 56cm top-tube and I'd need to put a very short stem (80mm or less) on it so that I couldreach without stretching. The Dawes would be at the upper limit of what I can ride. My Diamondback is a very small frame, with a seatpost a mile high and I really need to put a long stem on it. I'm 169cm tall with a longish torso.
I can't afford to buy a new touring bike such as a Surly Long-Haul Trucker. The Dawes is currently the price of a Surly frameset. I had planned to put a long stem and drop bars and bar-end shifters on the Diamondback. Touring bikes are not common in New Zealand, especially second hand.
Would putting a very short stem on the Dawes adversly affect the handling so that it would be hard to control with full panniers?
The Dawes has a 56cm top-tube and I'd need to put a very short stem (80mm or less) on it so that I couldreach without stretching. The Dawes would be at the upper limit of what I can ride. My Diamondback is a very small frame, with a seatpost a mile high and I really need to put a long stem on it. I'm 169cm tall with a longish torso.
I can't afford to buy a new touring bike such as a Surly Long-Haul Trucker. The Dawes is currently the price of a Surly frameset. I had planned to put a long stem and drop bars and bar-end shifters on the Diamondback. Touring bikes are not common in New Zealand, especially second hand.
Would putting a very short stem on the Dawes adversly affect the handling so that it would be hard to control with full panniers?
#11
Senior Member
Join Date: Jan 2008
Posts: 123
Bikes: 80's Marin, 90's Dawes, ALAN & various unicycles.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I wouldn't worry about stem length, IMO it's more important how the panniers are positioned, I like the bulk of the load on the front to be behind the steering axis (that is a straight line through the steering head to the wheel axle) & as low as possible, that slows the steering down making the bike feel more stable & helping to make it relaxed ride, obviously the positioning can be adjusted to taste but back & low is a good starting point.
#12
shaken, not stirred.
Thread Starter
Join Date: Aug 2006
Location: The Shaky Isles.
Posts: 5,248
Bikes: I've lost count.
Mentioned: 40 Post(s)
Tagged: 1 Thread(s)
Quoted: 1412 Post(s)
Liked 968 Times
in
388 Posts
Thanks for the replies. sounds like it will work ok. now to see if the Dawes doesn't go higher than I'm prepared to bid.
__________________
Get a bicycle. You will not regret it if you live. ~Mark Twain, "Taming the Bicycle"
vBulletin: snafu