Shadetree tandem build.
My wife and I haven't ridden our current tandem all that much but we thoroughly enjoy it however it is very apparent that the current bike doesn't fit her very well as the top bar is too high for her to be comfortable. It is an old Northwoods that I had done considerable component upgrading on and my plan was to look for a frame that would fit her better and move the upgraded components over to it. With this in mind I quickly located a NOS 2013 Raleigh Companion frame that would fulfill our requirements. As most projects of this nature do it quickly snowballed and about the only things moving to the new frame are the wheels and tires, grips, mirrors, racks and maybe the saddles. I'll probably put the Northwoods back together so it's still functional and either sell it or keep it for "guests" to ride, most likely the latter as it wouldn't bring much. I picked up a lightly used FSA Gossamer tandem crankset and I had Deore XT 3 X 9 front and rear derailleurs and Deore trigger shifters from another build that went 3 X 10 instead. The new frame does not have a fork but I already had a new suspension fork and I believe it is of sufficient quality to work for us, it has rebound adjustment and lockout. We will mainly be riding on rails-to-trails, paved paths and chip and oil roads with no serious hills. The crankset currently has 53/39/30 chain rings, I'm going to switch the big ring for a 50t as we never use the big ring on our current bike which is a 54 but at times the 42 middle ring wasn't quite enough. My wife isn't comfortable going too fast so I think the 50 would be of more use to us. I haven't decided on a cassette yet and I'm open to suggestions.
Here's the old Northwoods. https://cimg9.ibsrv.net/gimg/bikefor...e3b030da30.jpg Here's the new frame, nothing great but a bit better than the Northwoods and we were quite happy with it, it was just too tall in the back. https://cimg4.ibsrv.net/gimg/bikefor...5f2eeee2c3.jpg |
Originally Posted by Murray Missile
(Post 21201582)
...Here's the new frame, nothing great but a bit better than the Northwoods and we were quite happy with it, it was just too tall in the back.
If I see it right, there is no mount for a disc break... this is something I would really miss on a tandem. Apart from this I'm excited to see the final build...:thumb: |
This looks like a great bike for your team to step up to. It uses a eccentric bottom bracket which is a step up too. Looking forward to you build.
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I'm sure we could have found a used one for less than I'll have in this one but I would have just torn it down and rebuilt it to my liking so.......... :D
Originally Posted by lichtgrau
(Post 21202253)
I like that new frame, especially since it perfectly fulfills the basic need of your stoker for a good standover. Interesting design with the additional set of stays to deal with the rear seat tube...
If I see it right, there is no mount for a disc break... this is something I would really miss on a tandem. Apart from this I'm excited to see the final build...:thumb:
Originally Posted by Paul J
(Post 21202510)
This looks like a great bike for your team to step up to. It uses a eccentric bottom bracket which is a step up too. Looking forward to you build.
Here's the damage to the first frame: https://cimg1.ibsrv.net/gimg/bikefor...3ad7422dee.jpg https://cimg3.ibsrv.net/gimg/bikefor...5317a0516a.jpg |
Picked up a Shimano FD-M590 Deore XT front derailleur to work with the 50t big ring and a Deore 11-34t 9 speed cassette. I'm keeping my eyes open for a rigid fork. I'm still not warm and fuzzy about running a suspension fork.
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1. Check on Craigslist under "Bicycle Parts > Tandem" and under "Bicycles > Tandem". Where I am located (SoCal) may not be the same as other places but I can easily find listings with tandems that are about to hit the dumpster or "projects" that people started and never finished. You can pick up frames, forks, whatever you need for cheap.
2. If nothing turns up under "Tandems" then look for "dirt jumper" or "dj" forks. One rigid fork that was officially "tandem rated" by the manufacturer was the Surly Instigator. However these don't appear to be made anymore and may be hard to find. However if you can find a different dirt jumper fork with similar specs that might work out. For suspension forks, look for Marzocchi Dirt Jumper (DJ1 or DJ3). These forks are more rigid / stiffer than standard MTB forks and I think were "tandem rated" by the manufacturer at one point. These forks also don't appear to be made anymore but you should have an easier time finding them used on Craigslist, eBay, Pinkbike.com, etc. |
GOOGLE: April 1963 Popular Mechanics
If you are the least bit curious about how someone built a very nice tandem from two cruiser bicycles, a men's frame for the front, and a women's step-through for the rear portion. I think you might enjoy reading and seeing this detailed HOW TO article from long ago. ('BICYCLE BUILT FOR TWO'-by Manly Banister....see pages 176-179 and page 212 in APRIL 1963 POPULAR MECHANICS) |
OK, I have successfully reworked the head tube on Raleigh frame #1 so I now have 2 usable Raleigh Companion frames. I found an ironworker's drift punch that had an OD just a few thousands smaller than the ID of the head tube, 1-5/16" to be exact. I drove it slowly though about 4 times to work the dent out. It was close but not quite there. I went through my tool box and found an old Craftsman 1 inch 1/2" drive socket that had an OD the same as the collar on the bearing cup from a 1-1/8" headset and put it on an old extension backwards, I greased it up and then tapped it into the tube, then back out, I did this 3 times. I then pressed the headset cups in both ends and measured the cup in the reworked end several times in the ID of the collar, the ID of the outer flange and the OD of the outer flange. It was round within .0015", I'm calling that good enough.
Before pics: https://cimg9.ibsrv.net/gimg/bikefor...c4637cc9cf.jpg https://cimg4.ibsrv.net/gimg/bikefor...096cd9006a.jpg After: https://cimg0.ibsrv.net/gimg/bikefor...39bc934c7c.jpg https://cimg2.ibsrv.net/gimg/bikefor...410be1587c.jpg ...and the "implements of resurrection": https://cimg5.ibsrv.net/gimg/bikefor...701908e537.jpg |
I picked up a factory Raleigh fork for the repaired frame this morning off Ebay, steerer tube is about an inch longer than needed but the color is a fair match and the price was decent. Has some shelf wear but considering the paint loss on the head tube I wasn't too concerned, nothing some polishing compound and clear enamel can't fix. I went back to the page I found it on after checking out, scrolled down about 6 items and there was the actual factory fork for my frames from the seller I got them from...... :notamused: Right color, matching graphics, correct steerer tube length and only $7 more than the "pretty close" fork..... Since I wasn't all that crazy about using a suspension fork on the replacement frame I grabbed one of those as well, I just wish it was threadless instead of threaded. I also picked up a Ritchey Logic threaded headset for the replacement frame, I already had one for the original repaired frame.
The "pretty close" fork: https://cimg2.ibsrv.net/gimg/bikefor...4b2deecf81.jpg The OEM fork: https://cimg6.ibsrv.net/gimg/bikefor...139d27164e.jpg |
Forks are here, it doesn't look like it in the pictures but the legs on the OEM tandem fork are almost twice as big as the other, but the steerer tubes are the exact same length.
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The Raleighs are out, the frame sizing was "close" but not ideal. I stumbled on a better fitting bike last night and I'm picking it up Sunday. A very clean TREK T900, model year undetermined as this model went unchanged for several years. It doesn't really need anything BUT............. it will get the upgraded parts I had purchased for the Raleighs as needed.. At least one Raleigh will be built with the leftovers from the Northwoods and the other with the leftovers from the TREK. Everything in the pictures comes with it. Hopefully the bottle isn't used LOL. It will be a 3 X 9 with Deore XT drivetrain and possibly an FSA crankset with external bearing bottom brackets.I'm recovering from 2 total knee replacements so there won't be much riding for awhile but it will be ready to go next Spring.
https://cimg4.ibsrv.net/gimg/bikefor...e764e0e62f.jpg https://cimg6.ibsrv.net/gimg/bikefor...3aec05198f.jpg https://cimg1.ibsrv.net/gimg/bikefor...e7e503050c.jpg |
Trek stopped making the T900 several years ago. You can tell what model year your bike is by looking at the last letter in the serial number printed on the frame near the bottom bracket.
I found another thread on here that talked about a recall bulletin from Trek which explained the final serial number character of "D" represents the 2009 model year. Going forward from that (and skipping "I" and "O" as many manufacturers do because they look too much like 1 and 0), D - 2009 E - 2010 F - 2011 G - 2012 H - 2013 J - 2014 K - 2015 L - 2016 M - 2017 N - 2018 P - 2019 Q - 2020 R - 2021 |
Originally Posted by unikid
(Post 22594205)
Trek stopped making the T900 several years ago.
Our oldest picked it up for me as I'm currently unable to get in and out of our vehicles very easily. It doesn't look like they hardly ever rode it and it looks a lot cleaner in person than in the pictures. The seller told him the age old sad story....... bought it for his wife and he to ride, they rode it once or twice and then hung it up...... Glad I don't have that problem, when he pulled up in front of the house my wife was out the door checking it out before I even had my shoes on LOL. I'm anxious to get started switching parts over although it's ready to roll as is. I had the following for the Raleigh frameset that will go on the T900. FSA Gossamer tandem triple crankset, Deore XT 9 speed front and rear deraiileurs, Deore XT 3 X 9 trigger shifter/V-brake levers, Deore XT V-brakes and Deore XT 11-34t cassette. I'll move the saddles, grips and rear rack over from the old Northwoods and maybe a few other trinkets. The takeoffs will go on the Raleigh frameset and I'll loan it to friends and family that want to try a tandem.The Northwoods will get turned into yard art or something LOL. The TREK also has accomodations for a rear disc brake which I may mount as a "chicken brake" for the stoker so she can hold the bike when we're stopped in inclines, etc. or a backup if we get into wet conditions. |
The Raleighs are back on the menu, I have enough parts to make the desired upgrades to the TREK and still build both Raleighs using the components from the old Northwoods and the takeoffs from the TREK. Last weekend I stripped the Northwoods and moved some components to Raleigh #1. Because of the larger seat tubes on the Raleighs the old Northwoods FD would not work. I had to get a new bottom pull triple FD that would work with a 52t big ring and a 31.8 tube OD. The only one I could find was a flat bar road derailleur so I also had to buy new trigger shifters to work with it. That was OK because I also swapped the 7 speed cassette for an 8 speed and need new shifters anyway. Today it got a set of 26 X 2.35 Kenda Small Block 8 tires because they wouldn't fit on the bike I bought them for, they do however fit the Raleigh with room to spare, a good 5/16" at the closest point. The rear dropouts on these Raleighs are pretty crappy which seems odd because the rest of the frame while not light is pretty nice but they definitely cut corners on the dropouts.
Here is #1 "under construction" with the new tires. This one will see lots of gravel use. I need to make extenders for the front straps on the rear rack or find longer mounting straps. https://cimg2.ibsrv.net/gimg/bikefor...ab72e0dae8.jpg https://cimg6.ibsrv.net/gimg/bikefor...1edd72e0d7.jpg |
It is FINALLY road/trail worthy. A few small details to wrap up but this is pretty much the finished look.
https://cimg1.ibsrv.net/gimg/bikefor...b127b09a97.jpg https://cimg4.ibsrv.net/gimg/bikefor...d3218e24e0.jpg |
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