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Search: Posts Made By: torger
Showing results 1 to 50 of 132
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Forum: Tandem Cycling
03-01-23, 06:46 AM
Replies: 6
Views: 944
Posted By torger

Yes it seems like brake housing is really...

Yes it seems like brake housing is really important for tandems, the reason being the long cable run to the rear brake and the large braking force required to stop two people on one bike. With the...
Forum: Tandem Cycling
02-28-23, 02:55 AM
Replies: 6
Views: 944
Posted By torger

Best cables and housing for tandem?

I have mechanical disc and mechanical shifting (3x10 speed) on my tandem. Upgrading to hydraulics and/or electronic is prohibitively expensive as I would need to change do 2x at the same time. So I...
Forum: Bicycle Mechanics
11-08-21, 12:31 AM
Replies: 15
Views: 4,062
Posted By torger

I became lazy and bought new shifter internals as...

I became lazy and bought new shifter internals as a spare part, which is basically a whole shifter assembled so I won't need to rebuild it. However, I also got so comfortable controlling the worn...
Forum: Tandem Cycling
07-12-21, 11:04 AM
Replies: 204
Views: 91,964
Posted By torger

Yes I use SPD for longer rides, in the photos...

Yes I use SPD for longer rides, in the photos it's setup for local rides around town. My stoker prefers flat pedals always though. For the SPD I actually use a special short axle pedal from SQLab...
Forum: Tandem Cycling
07-11-21, 06:58 AM
Replies: 204
Views: 91,964
Posted By torger

Our tandem has been featured before in this...

Our tandem has been featured before in this thread but it was a while ago and I've done some minor upgrades since last, so I hope it's okay to show it again. The photos are fresh from a couple of...
Forum: Bicycle Mechanics
01-07-21, 04:55 AM
Replies: 17
Views: 8,221
Posted By torger

I have built the wheels, more about them...

I have built the wheels, more about them here:https://www.bikeforums.net/tandem-cycling/1189013-anyone-racing-24-spoke-wheels-low-spoke-count-2.html

They seem to perform well and I didn't have any...
Forum: Tandem Cycling
07-30-20, 04:03 PM
Replies: 204
Views: 91,964
Posted By torger

I don't know exactly, I think it's around 17 kg...

I don't know exactly, I think it's around 17 kg (37 pounds), that is a bit less than two typical mid range Cannondale alloy single bikes. Not to be considered a light weight tandem, but not too heavy...
Forum: Tandem Cycling
07-30-20, 08:35 AM
Replies: 12
Views: 2,294
Posted By torger

Yeah, I'll keep the chain length. I just tried to...

Yeah, I'll keep the chain length. I just tried to pull it a bit more with my hand and it seemed to be a bit more range left, but it's anyway not worth reducing shifting performance or increasing risk...
Forum: Tandem Cycling
07-30-20, 05:00 AM
Replies: 12
Views: 2,294
Posted By torger

Below some images for the change from 30T to 24T,...

Below some images for the change from 30T to 24T, so now I have 52-39-24 in the front and 11-32 in the back. The chain is kept the same length, so the behavior on the middle (where most riding is...
Forum: Tandem Cycling
07-27-20, 02:52 AM
Replies: 204
Views: 91,964
Posted By torger

Thanks. We often reconfigure our tandem to ride...

Thanks. We often reconfigure our tandem to ride with friends and family members. Normally it's me in the front and my partner as stoker, but sometimes the other way around, and when I ride with...
Forum: Tandem Cycling
07-25-20, 04:03 AM
Replies: 204
Views: 91,964
Posted By torger

I have posted this image before in another thread...

I have posted this image before in another thread which was about the gravel wheel build, but I thought I may put it in this thread too. It's a 2019 Cannondale Road Tandem with some new components...
Forum: Tandem Cycling
07-24-20, 01:01 PM
Replies: 12
Views: 2,294
Posted By torger

Thanks for the responses. Seems like Ihave to try...

Thanks for the responses. Seems like Ihave to try for myself and see how it works on our bike with our shifting style. I just ordered a 24T and a 26T. If none of those work I may order a 28T or just...
Forum: Tandem Cycling
07-22-20, 03:09 PM
Replies: 16
Views: 1,976
Posted By torger

Tandems often use what is considered legacy...

Tandems often use what is considered legacy technology for single bikes. The bike industry moves very fast, new components and standards and trends all the time. Tandem bikes have a very low...
Forum: Tandem Cycling
07-22-20, 02:56 PM
Replies: 38
Views: 15,680
Posted By torger

My best tandem hack was to build our own tandem...

My best tandem hack was to build our own tandem wheels. I built aero wheels based on lightbicycle rims, which could be ordered custom-reinforced for tandem use and could thus get tandem aero wheels...
Forum: Tandem Cycling
07-22-20, 02:22 PM
Replies: 9
Views: 3,301
Posted By torger

On modern single gravel bikes 650B is typically...

On modern single gravel bikes 650B is typically only used for very wide tires, 47mm or more. If the gravel is not too rough most satisfy with 700c 40mm, and I'd say that is the most common for single...
Forum: Tandem Cycling
07-22-20, 02:08 PM
Replies: 13
Views: 1,867
Posted By torger

We just got the BOB quick release, the long...

We just got the BOB quick release, the long Santana version. To be noted is that the shortest 165 mm outer width as speced in the manual can only be achieved if either cutting the rod a bit or...
Forum: Tandem Cycling
07-22-20, 01:44 PM
Replies: 12
Views: 2,294
Posted By torger

exceeding derailleur range

With the tandem we have a greater need of wide gear range than on the single bikes. We have an old school 10 speed triple chainset, Shimano 5700 with 52-39-30 in the front and 11-32 in the back....
Forum: Tandem Cycling
07-11-20, 07:01 AM
Replies: 13
Views: 1,867
Posted By torger

Thanks for the tip. Did som research on the BOB...

Thanks for the tip. Did som research on the BOB quick release, they exist(ed) in three versions, short, 145mm tandem and Santana 160mm tandem. The outside adjustment dimensions are 145 - 164 for the...
Forum: Tandem Cycling
07-10-20, 01:09 PM
Replies: 13
Views: 1,867
Posted By torger

<br /><br />Yeah it works, I guess it's just that...

<br /><br />Yeah it works, I guess it's just that I've become a quick release nerd, I've spent a silly amount of money on quick releases on my single bikes through out the years, and finding the...
Forum: Tandem Cycling
07-10-20, 09:01 AM
Replies: 13
Views: 1,867
Posted By torger

This is how it looks now, what I don't like about...

This is how it looks now, what I don't like about it is that it goes past 90 degrees with no real stop. The good ones have maximum pressure just before the stop (to avoid the release getting loose),...
Forum: Tandem Cycling
07-10-20, 08:30 AM
Replies: 13
Views: 1,867
Posted By torger

The Thule one will indeed work length-wise (easy...

The Thule one will indeed work length-wise (easy to get here in Sweden too, Thule is a Swedish company :-) ), and actually the one labelled "CTS" we have look exactly the same, as most trailer quick...
Forum: Tandem Cycling
07-10-20, 08:24 AM
Replies: 13
Views: 1,867
Posted By torger

Should have said I'm located in Europe so...

Should have said I'm located in Europe so importing from the US is a last resort (I have had to do that a couple of times though, the stoker handlebar for example). I looked on Tandem East's website...
Forum: Tandem Cycling
07-10-20, 03:08 AM
Replies: 13
Views: 1,867
Posted By torger

Tandem long quick release alternatives

Our Cannondale tandem uses 145mm quick release in the rear. We need to remove/attach wheel quite often so we prefer some sort of quick release, but still with safe and tight fastening. The DT Swiss...
Forum: Tandem Cycling
07-08-20, 03:00 AM
Replies: 7
Views: 1,928
Posted By torger

I made a set of 650B for our quite new Cannondale...

I made a set of 650B for our quite new Cannondale Road Tandem. On that frame tire clearance was not fantastic, but we do fit 47mm tires which is great as the BB is kept about the same height over the...
Forum: Tandem Cycling
07-03-20, 05:20 AM
Replies: 34
Views: 9,830
Posted By torger

Haven't had that much time to ride, but here's...

Haven't had that much time to ride, but here's the finished wheels mounted on the bike. So far pleased with the performance and they feel stiff enough.
...
Forum: Tandem Cycling
05-25-20, 03:06 AM
Replies: 53
Views: 26,098
Posted By torger

Often clearance is a bit less than it seems - the...

Often clearance is a bit less than it seems - the narrowest point is typically in the chainstay close to the seat tube. Sometimes there is a bit of asymmetry so there is less space on one side than...
Forum: Tandem Cycling
05-18-20, 01:46 AM
Replies: 53
Views: 26,098
Posted By torger

Performance/racing tires usually have softer...

Performance/racing tires usually have softer compounds to provide greater grip, and are overall softer for better rolling resistance, this leads to faster wear. Touring tires are designed to last...
Forum: Tandem Cycling
03-29-20, 11:39 PM
Replies: 12
Views: 3,813
Posted By torger

I run 35-37mm on my single gravel bike, and I've...

I run 35-37mm on my single gravel bike, and I've noticed that for the tandem I prefer to have wider rubber to get the corresponding feel. I think it's due to the bike being heavier and less nimble....
Forum: Tandem Cycling
03-29-20, 11:25 PM
Replies: 12
Views: 3,813
Posted By torger

I haven't had opportunity to test this rig yet,...

I haven't had opportunity to test this rig yet, still a few weeks of winter left here. It's mechanical brakes (Avid BB7) on this bike which I think is the "weak spot" in the brake system. I've...
Forum: Tandem Cycling
03-29-20, 06:37 AM
Replies: 12
Views: 3,813
Posted By torger

:eek: I hope so! I'll check the wheel. I'm a...

:eek: I hope so! I'll check the wheel. I'm a beginner wheel builder so we'll see how these will hold up. I plan to inspect them now and then.
Forum: Tandem Cycling
03-25-20, 12:40 PM
Replies: 12
Views: 3,813
Posted By torger

I had to make little hack as the tires at 48mm...

I had to make little hack as the tires at 48mm actual width on the 21c rim is a bit too much for this frame. By setting the rim 1mm to the right I got 2.5mm on both sides on the slighly asymmetric...
Forum: Tandem Cycling
03-25-20, 12:08 PM
Replies: 12
Views: 3,813
Posted By torger

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/1407x791/tandem_gravel_fb9edc05f2212ed362605aeaf02795d121de2a9d.jpg
Wheels on the tandem
Forum: Tandem Cycling
03-25-20, 05:37 AM
Replies: 12
Views: 3,813
Posted By torger

I will! There's only one wheel in the photo as...

I will! There's only one wheel in the photo as the back wheel was not ready when I took the photo, but now it is. So I'll put together the bike during this week hopefully. The bike itself is in a...
Forum: Tandem Cycling
03-24-20, 08:02 AM
Replies: 12
Views: 3,813
Posted By torger

650B gravel wheel build for Cannondale Tandem

Here's my new gravel wheel build for our 2018-2019 Cannondale Tandem Road 2. I've also built a pair of aero wheels (seen in a different thread), but these will be these will be the main wheel as we...
Forum: Tandem Cycling
03-15-20, 01:08 PM
Replies: 34
Views: 9,830
Posted By torger

Thanks :-). Actually the small difference in...

Thanks :-). Actually the small difference in spoke tension is due to different spoke angle you mention. It's indeed very small, but the shorter spokes are a little bit less tangential than the longer...
Forum: Tandem Cycling
03-14-20, 02:32 PM
Replies: 34
Views: 9,830
Posted By torger

Tensioned and trued! Theoretically, due to the...

Tensioned and trued! Theoretically, due to the special 36->24 lacing, half of the spokes would need couple of percent higher tension so I was a bit worried that would cause me problems when truing,...
Forum: Tandem Cycling
03-05-20, 12:17 AM
Replies: 34
Views: 9,830
Posted By torger

So the back wheel is now laced. It was no easy...

So the back wheel is now laced. It was no easy task. Sewing thread, magnet, lots of electric tape and patience finally did it. I used morgan blue aquaproof grease as spoke prep, I did not want...
Forum: Tandem Cycling
03-04-20, 01:58 AM
Replies: 15
Views: 3,419
Posted By torger

A few seatpost comments. Lightweight seatposts...

A few seatpost comments. Lightweight seatposts may be butted, ie have thinner walls in the middle, alloy as well as carbon. That type of seat postis probably not an ideal choice when clamping a...
Forum: Tandem Cycling
03-04-20, 01:38 AM
Replies: 35
Views: 4,496
Posted By torger

I go against the stream and say a bike fit is...

I go against the stream and say a bike fit is overkill, but sure if it's easy for you to get one, go ahead if you want to.

Anyway, I'd suggest looking into the handlebar, making it narrower and...
Forum: Tandem Cycling
03-04-20, 01:22 AM
Replies: 34
Views: 9,830
Posted By torger

I've finally got all parts and ready to build the...

I've finally got all parts and ready to build the wheels (or actually I've had them for some time, but I got involved in other stuff so I haven't had time to build wheels). Having no rim bed nipple...
Forum: Tandem Cycling
01-10-20, 12:12 AM
Replies: 24
Views: 4,608
Posted By torger

Some more in Europe: Duratec, Matrix, Dolan. ...

Some more in Europe: Duratec, Matrix, Dolan.

I also think/hope Cannondale while not making tandems each year, will continue make them every other year or so.
Forum: Tandem Cycling
01-09-20, 12:29 AM
Replies: 34
Views: 9,830
Posted By torger

To just get a quick ERD measurement with the...

To just get a quick ERD measurement with the stuff I had at home I used a sewing thread with a metal necklace chain tied to the middle (anything with some weight and metal to be attracted by a magnet...
Forum: Tandem Cycling
01-08-20, 11:17 AM
Replies: 34
Views: 9,830
Posted By torger

Small update, just got the rims. These are...

Small update, just got the rims. These are lightbicycle R55D (55mm deep, 25mm wide, 27mm at widest point), a custom version which is reinforced with about 100 gram extra, so the rim weighs 600 grams...
Forum: Tandem Cycling
12-23-19, 01:02 PM
Replies: 34
Views: 9,830
Posted By torger

Thanks for the feedback. You may be right, but...

Thanks for the feedback. You may be right, but now it's too late :-O , the rims have just been made and is on its way here, it's 25mm external and 55mm deep. Depth is okay as I don't want to goo too...
Forum: Tandem Cycling
12-13-19, 03:38 AM
Replies: 34
Views: 9,830
Posted By torger

Very interesting. We're going to be in the range...

Very interesting. We're going to be in the range 290 to 350 (130 - 160 kg) depending on who I'm riding with, 290 will be the most common configuration. 28 spokes would have been my preferred count,...
Forum: Tandem Cycling
12-11-19, 12:15 AM
Replies: 34
Views: 9,830
Posted By torger

Thanks for the feedback! Regarding spokes...

Thanks for the feedback!

Regarding spokes I've looked at how others, ie Rolf Prima, has made low spoke count tandem wheels, and they use a heavier spoke than in normal aero wheels. Should be noted...
Forum: Bicycle Mechanics
11-30-19, 12:18 PM
Replies: 17
Views: 8,221
Posted By torger

Thanks for all replies, they have been very...

Thanks for all replies, they have been very helpful for me to get more understanding on what happens in a build like this.

I think I will proceed. I'll post an update how it goes if I remember,...
Forum: Bicycle Mechanics
11-30-19, 03:48 AM
Replies: 17
Views: 8,221
Posted By torger

Looking in 2D space, splitting up the tension...

Looking in 2D space, splitting up the tension force in pure tangent the long spoke is 96.00% tangential (96% of the spoke tension pulls in pure tangent), the short spoke has 93.07%. That would mean...
Forum: Bicycle Mechanics
11-29-19, 04:06 PM
Replies: 17
Views: 8,221
Posted By torger

I think I just realized (hopefully) the main...

I think I just realized (hopefully) the main issue you were describing. I think one can look at one side isolated, and in the attached image I have colored the shorter spokes magenta, the longer...
Forum: Bicycle Mechanics
11-29-19, 03:29 PM
Replies: 17
Views: 8,221
Posted By torger

Interesting example, your picture shows 40H->32H...

Interesting example, your picture shows 40H->32H with cross. This leads to the same situation as mine, but to a lesser degree. 360/40=9 degrees between hub holes (and thus offset between flanges),...
Showing results 1 to 50 of 132
 
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