Carrying a passenger,gearing?
#1
Senior Member
Thread Starter
Carrying a passenger,gearing?
so...i am want to carry a adult passenger 135 lb, using a old English style bicycle.
Here in China, we can buy these bikes with super strong rack.
Problem is that it is single speed.
cogs: 42x18 , 26 inch tires.
if i switch out the 18 cog with a 22 or 24 cog, how far do you think a normal person can pedal a 135 pound passenger on flat MUP?
20 miles doable?
Here in China, we can buy these bikes with super strong rack.
Problem is that it is single speed.
cogs: 42x18 , 26 inch tires.
if i switch out the 18 cog with a 22 or 24 cog, how far do you think a normal person can pedal a 135 pound passenger on flat MUP?
20 miles doable?
Last edited by mtb_addict; 06-15-20 at 05:56 AM.
#2
On yer bike
The only thing limiting the distance is you. The gearing only limits your speed. On flat ground any of those ratios (including the original 42x18) could be fine or impossible, depending on the rider's strength and weight compared to the rear passenger. For me, I would do okay with the original ratio and if I needed to go farther than a couple of miles, then would prefer the higher gearing to the lower/slower gears. Why not just try out the original gearing and see how it works? Then change as needed.
#3
Senior Member
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 2,799
Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,024 Times
in
723 Posts
I would think that facing forward would be the easiest to balance as the person has equal weigh to each side of the bike, facing sideways the person may have more weight on one side or the other. A 42/18 does seem like it wouldn't always be the best for lots of stops from my perspective. Biggest issue is keeping the person's feet out of the rear wheel, one solution is get a longer axle and put cheap pegs on it. Don't let a person climb on and off with them but they should be fine as a place to rest feet and keep the feet away from things that spin.
#4
Passista
Join Date: Jul 2005
Posts: 7,597
Bikes: 1998 Pinarello Asolo, 1992 KHS Montaņa pro, 1980 Raleigh DL-1, IGH Hybrid, IGH Utility
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 866 Post(s)
Liked 721 Times
in
396 Posts
42/18 should do IMO, but a 20 could be easier. 22 or 24 would be too low (for me, YMMV).
#5
Senior Member
Join Date: May 2014
Location: Singapore
Posts: 470
Bikes: Voodoo Hoodoo, Linus Libertine
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 106 Post(s)
Likes: 0
Liked 15 Times
in
9 Posts
Are you able to/do you want to make the effort to change the chainring also? The lower the effort, the longer you can last.
For me i would probably do 32x22, making 37.8 gear inch. About 35 gear inch is my starting gear in my multispeed bike and it is light enough but not too light that i spin out if i haul a heavy load.
For me i would probably do 32x22, making 37.8 gear inch. About 35 gear inch is my starting gear in my multispeed bike and it is light enough but not too light that i spin out if i haul a heavy load.
#6
Senior Member
Join Date: Jun 2015
Location: Down Under
Posts: 1,936
Bikes: A steel framed 26" off road tourer from a manufacturer who thinks they are cool. Giant Anthem. Trek 720 Multiroad pub bike. 10 kids bikes all under 20". Assorted waifs and unfinished projects.
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1188 Post(s)
Liked 1,154 Times
in
640 Posts
Passengers on racks suck. They can';t help wobbling around trying to compensate for something. I've had the best results when they are nearly as drunk as I am, floppy enough not to react.
If they have slim hips, you might be better jamming them into a basket on the back, they can't wobble around as much. I did that a while ago with a 140lb dude on the back and another one about the same weight on the handlebars, but they had strict instructions not to wobble around. It was for about 3/4 of a mile, but mostly downhill. The dude on the bars probably acted as a good counterweight for the guy in the basket. This was on my tourer, so I was pretty confident it would handle 280lbs of them, 200lbs plus of me and 40lbs of bike. AND it had.....rim brakes!!!!!
In all seriousness though, no way would I try and dink (aussie for double up) someone for 20 miles. It'll suck for both of you. Their buttocks will go to sleep as fast as your temper will rise.
If they have slim hips, you might be better jamming them into a basket on the back, they can't wobble around as much. I did that a while ago with a 140lb dude on the back and another one about the same weight on the handlebars, but they had strict instructions not to wobble around. It was for about 3/4 of a mile, but mostly downhill. The dude on the bars probably acted as a good counterweight for the guy in the basket. This was on my tourer, so I was pretty confident it would handle 280lbs of them, 200lbs plus of me and 40lbs of bike. AND it had.....rim brakes!!!!!
In all seriousness though, no way would I try and dink (aussie for double up) someone for 20 miles. It'll suck for both of you. Their buttocks will go to sleep as fast as your temper will rise.
#7
Senior Member
Join Date: Jun 2014
Location: Ontario, Canada
Posts: 4,624
Bikes: iele Latina, Miele Suprema, Miele Uno LS, Miele Miele Beta, MMTB, Bianchi Model Unknown, Fiori Venezia, Fiori Napoli, VeloSport Adamas AX
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1324 Post(s)
Liked 927 Times
in
640 Posts
Have you considered getting a three-speed wheel and shifter?
Cheers
Cheers
#8
Senior Member
Join Date: Jun 2015
Location: Down Under
Posts: 1,936
Bikes: A steel framed 26" off road tourer from a manufacturer who thinks they are cool. Giant Anthem. Trek 720 Multiroad pub bike. 10 kids bikes all under 20". Assorted waifs and unfinished projects.
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1188 Post(s)
Liked 1,154 Times
in
640 Posts
Apparently it can be done... https://www.newindianexpress.com/spo...i-2146619.html
#9
Overdoing projects
Join Date: Oct 2011
Location: Rotterdam, former republic of the Netherlands
Posts: 2,397
Bikes: Batavus Randonneur GL, Gazelle Orange Excellent, Gazelle Super Licht, Gazelle Grand Tourist, Gazelle Lausanne, Gazelle Tandem, Koga-Miyata SilverAce, Koga-Miyata WorldTraveller
Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
Quoted: 784 Post(s)
Liked 1,238 Times
in
686 Posts
I would think that facing forward would be the easiest to balance as the person has equal weigh to each side of the bike, facing sideways the person may have more weight on one side or the other. A 42/18 does seem like it wouldn't always be the best for lots of stops from my perspective. Biggest issue is keeping the person's feet out of the rear wheel, one solution is get a longer axle and put cheap pegs on it. Don't let a person climb on and off with them but they should be fine as a place to rest feet and keep the feet away from things that spin.
Equal weight on each side of the bike is hardly an issue. Passengers self-center and even when I attach paniers with 10kg on one side to my front rack on only one side that can still be comfortable enough over longer distances.
Rollingspoke did some research into the most common ways to sit in Amsterdam. Side-saddle was the clear winner with a 77% vs 17% majority vs. Bullfrog though there is an interesting difference between men and women here.
I would suggest installing a rear carrier seat for the comfort of your passenger.
Apparently it can be done... https://www.newindianexpress.com/spo...i-2146619.html
Last edited by JaccoW; 06-04-20 at 06:38 AM.
#10
Banned
Places like Amsterdam it's normal to go out on a date with your friend sitting on the rear rack..
Nothing is done special on the Opa/Oma Bike.
Nothing is done special on the Opa/Oma Bike.
Last edited by fietsbob; 06-06-20 at 12:02 PM.
#11
Quidam Bike Super Hero
Join Date: Jan 2019
Location: Stone Mountain, GA (Metro Atlanta, East)
Posts: 1,135
Bikes: 1995 Trek 800 Sport, aka, "CamelTrek"
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 331 Post(s)
Liked 415 Times
in
282 Posts
I would be most worried, among all the other warnings, about whether the rims, tires and tubes can handle the weight. A seat and pegs would be nice.
I googled Yuwang bicycles because I LOVE that rear wheel kickstand. No luck finding it. Do you know a source for it?
I googled Yuwang bicycles because I LOVE that rear wheel kickstand. No luck finding it. Do you know a source for it?