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Search: Posts Made By: Joint Venture
Showing results 1 to 50 of 83
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07-29-21, 07:29 PM
Replies: 82
Views: 4,825
Posted By Joint Venture

The 22 is what you want for your square taper...

The 22 is what you want for your square taper cranks. The 44 is for Octalink and spline drive cranks.
07-19-21, 05:11 PM
Replies: 82
Views: 4,825
Posted By Joint Venture

I don’t know when da Vinci changed the design of...

I don’t know when da Vinci changed the design of their eccentric. Our 2001 had the old school style where the eccentric was fixed in place by set screws in the frame located under the BB shells. Our...
07-19-21, 06:45 AM
Replies: 82
Views: 4,825
Posted By Joint Venture

“Grinding” makes me think of bearings too. There...

“Grinding” makes me think of bearings too. There really are just three places that bearings would grind while pedaling: the front/rear BB’s and the intermediate shaft. Using the suggestions above...
07-13-21, 06:24 PM
Replies: 82
Views: 4,825
Posted By Joint Venture

From the point of view of your photo, the...

From the point of view of your photo, the lockring should loosen CCW. The spline drive is threaded. I think da Vinci uses the same spline drive for 3x and 4x drivetrains as Todd told me that I could...
07-07-21, 08:20 AM
Replies: 82
Views: 4,825
Posted By Joint Venture

I was hoping someone with a 3x da Vinci would...

I was hoping someone with a 3x da Vinci would chime in to answer your question about the lockring securing the chainring cogs. Our old 2001 Joint Venture and our current 2016 both are 4x drivetrain...
07-01-21, 06:53 AM
Replies: 82
Views: 4,825
Posted By Joint Venture

Another thought … make sure the the chain whip...

Another thought … make sure the the chain whip has a “modern” narrow chain on it. I had an old chain whip from the 5/6/7 speed days and found it slipped on 9/10 speed cogs, so I replaced the chain...
06-30-21, 06:45 PM
Replies: 82
Views: 4,825
Posted By Joint Venture

Make sure you’re wrapping the chain whip around...

Make sure you’re wrapping the chain whip around the largest “chainring” cog in order to get the most teeth engaged and the most mechanical advantage. I’ve done this several times and never had a...
06-04-21, 12:45 PM
Replies: 5
Views: 629
Posted By Joint Venture

For a time, the Rans Screamer recumbent tandem...

For a time, the Rans Screamer recumbent tandem offered da Vinci ICS as an option. I’m not sure of what use the double freewheel block would have been on a non-tandem recumbent as it is meant to...
03-02-21, 07:53 AM
Replies: 42
Views: 6,781
Posted By Joint Venture

Some 26” tandems can be had originally equipped...

Some 26” tandems can be had originally equipped with drop bars, like from da Vinci and Co-Motion. If needed, a drop bar conversion isn’t hard at all, especially with cable-actuated discs.
02-10-21, 07:40 PM
Replies: 10
Views: 1,335
Posted By Joint Venture

You got that all done quickly! I’ve always loved...

You got that all done quickly! I’ve always loved the Bianchi Celeste color!!
02-04-21, 07:30 PM
Replies: 15
Views: 1,541
Posted By Joint Venture

Try changing the middle ring down to 39-42t from...

Try changing the middle ring down to 39-42t from the 48t half-step setup.
02-04-21, 12:10 PM
Replies: 15
Views: 1,541
Posted By Joint Venture

Are you still running the original 52/48/28...

Are you still running the original 52/48/28 “half-step plus granny” ring sizes that were stock on a 1990 Burly Duet? The original drivetrain was 3x6 Suntour with bar-end shifters. If not, what’s...
01-24-21, 07:37 AM
Replies: 19
Views: 2,154
Posted By Joint Venture

Might not be long enough for your 140mm rear...

Might not be long enough for your 140mm rear spacing. Remember, the rear spacing is measured between the inner faces of the dropouts, also known as the rear hub “over locknut dimension” or OLD. 3mm...
01-23-21, 09:46 PM
Replies: 18
Views: 2,363
Posted By Joint Venture

That’s exactly the reason we converted our 1990...

That’s exactly the reason we converted our 1990 Burly Duet (exact same tandem the OP is restoring) to 700c wheels around 1995. Using the Shimano LX V-brakes of the time, the 700c wheels required no...
01-23-21, 03:39 PM
Replies: 19
Views: 2,154
Posted By Joint Venture

Makes sense! Supposing the material is the same,...

Makes sense! Supposing the material is the same, of course. I wonder if hollow axles are made of a higher grade steel than solid axles to compensate?
01-23-21, 11:55 AM
Replies: 19
Views: 2,154
Posted By Joint Venture

It doesn’t appear to come in a tandem rear width....

It doesn’t appear to come in a tandem rear width. The inside dropout faces on your 1990 Duet are spaced at 140mm and QR non-disc road bikes have been spaced at 130mm since 8-speed rear gears came...
01-23-21, 09:53 AM
Replies: 18
Views: 2,363
Posted By Joint Venture

We used 27 x 1 & 3/8” tires on our 1st Gen Duet...

We used 27 x 1 & 3/8” tires on our 1st Gen Duet (like yours) in the early 90’s and I remember having plenty of clearance. Choices in 27” tires are pretty limited these days, so that may dictate what...
01-23-21, 09:46 AM
Replies: 19
Views: 2,154
Posted By Joint Venture

Hollow QR axles on tandem-rated hubs are plenty...

Hollow QR axles on tandem-rated hubs are plenty strong. Use a good skewer like a DT Swiss. I’ve read that hollow axles are actually more resistant to bending than solid. Makes sense, as the newest...
01-12-21, 10:40 PM
Replies: 9
Views: 1,468
Posted By Joint Venture

My levers are second gen Ergo. I agree the latest...

My levers are second gen Ergo. I agree the latest Campy levers are great, but they don’t have the micro clicks on the front to shift and trim the 4 chainrings. I get along very well with the Shimano...
01-12-21, 07:42 PM
Replies: 9
Views: 1,468
Posted By Joint Venture

Nice write up! Very helpful - thanks! I am...

Nice write up! Very helpful - thanks!

I am tempted to do the same on our Joint Venture. We ordered our bike with 4x10 gearing and it works great! I had Todd use a 9-speed Shimano XT derailleur...
01-09-21, 12:36 PM
Replies: 12
Views: 1,395
Posted By Joint Venture

The drum brake mounting tab won’t work for discs....

The drum brake mounting tab won’t work for discs. With a drum, the entire brake mounts on/over the rear hub and that tab on the frame is there just to secure the arm that prevents the shoe assembly...
01-01-21, 01:42 PM
Replies: 12
Views: 1,395
Posted By Joint Venture

One change I made to our 1990 Duet after a few...

One change I made to our 1990 Duet after a few years was to swap the original brake levers for Dia Compe 287V Aero levers. This allowed me to pull enough cable to use long-arm MTB V-brakes without...
01-01-21, 09:04 AM
Replies: 12
Views: 1,395
Posted By Joint Venture

We started on a new 1990 Burly Duet back in the...

We started on a new 1990 Burly Duet back in the day, equipped with braking like yours. I did remove the drum brake and separate the front/rear canti brakes to each on one lever. You can use that...
12-31-20, 08:57 AM
Replies: 42
Views: 6,781
Posted By Joint Venture

I think a cost-effective way to build or buy a...

I think a cost-effective way to build or buy a tandem that will accept high-volume tires is to get a frame designed for 26” (559) wheels. You can certainly build it up as a road/gravel bike with drop...
12-28-20, 08:07 PM
Replies: 15
Views: 1,868
Posted By Joint Venture

We’ve put a lot of miles on two different sets of...

We’ve put a lot of miles on two different sets of the “one-piece” 34t da Vinci spider/rings on two different tandems and can recommend them without reservation.
12-28-20, 07:35 AM
Replies: 15
Views: 1,868
Posted By Joint Venture

With the da Vinci cranks you can choose from a...

With the da Vinci cranks you can choose from a number of different chainring BCD options when ordering due to the replaceable spiders. So you’ll have flexible gearing options, as well as being able...
12-19-20, 08:27 AM
Replies: 78
Views: 11,831
Posted By Joint Venture

Does anyone know if Rudy and Kay (zonatandem) are...

Does anyone know if Rudy and Kay (zonatandem) are still riding? Their tandem age would be about 172 now!
12-08-20, 09:24 AM
Replies: 78
Views: 11,831
Posted By Joint Venture

Beginning Tandem Age: 55 Current Tandem Age: ...

Beginning Tandem Age: 55
Current Tandem Age: 116
10-31-20, 12:54 PM
Replies: 3
Views: 942
Posted By Joint Venture

We’re in our 31st year of riding a tandem and we...

We’re in our 31st year of riding a tandem and we have yet to have a timing chain “jump off” the timing chainrings.” Do you not have an eccentric bottom bracket to keep the proper chain tension? What...
10-19-20, 03:37 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

Spider refers to the arms, usually 4 or 5, to...

Spider refers to the arms, usually 4 or 5, to which the chainrings attach. Some cranks have spiders which can be changed out, but most are fixed. I saw a pic of a Grand Junction on eBay and it...
10-17-20, 06:07 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

What you are referencing are commonly called...

What you are referencing are commonly called “timing rings” in the tandem world. On a da Vinci tandem, the front/rear timing rings are the same as most conventional tandems and attach to the left...
10-06-20, 01:33 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

Todd is a great resource for product support. ...

Todd is a great resource for product support. I’ve spoken with and e-mailed him many times over the years. Great product and great guy!
10-05-20, 06:05 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

If those are the chainrings you have currently...

If those are the chainrings you have currently (4-speed front shifting) and they have the conical spacers (which act as shifting ramps), then order just the quad rings set (yes, that’s a set they’re...
10-04-20, 07:48 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

Disregard the above as it doesn’t apply. On a da...

Disregard the above as it doesn’t apply. On a da Vinci tandem, the chainrings are hyperglide cogs mounted to an intermediate shaft with the double block freewheel on the other end, which forms the...
09-27-20, 06:04 PM
Replies: 24
Views: 3,039
Posted By Joint Venture

Santana and da Vinci to name two.

Santana and da Vinci to name two.
09-18-20, 08:12 AM
Replies: 31
Views: 11,350
Posted By Joint Venture

We started riding a tandem on a new Burley Duet...

We started riding a tandem on a new Burley Duet in 1990. Now I have fond memories of that bike that we rode for 9 years before upgrading to better tandems ... however, that bike had the original...
08-18-20, 08:11 AM
Replies: 10
Views: 2,089
Posted By Joint Venture

Rivendell has some tips on how to handle the...

Rivendell has some tips on how to handle the hidden chainring nut. Scroll down the page about halfway:

https://www.rivbike.com/collections/cranks-bbs/products/crank-new-albion-xdt-48t-x-36t-x-26t...
08-06-20, 09:34 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

Your da Vinci has three chains, two timing chains...

Your da Vinci has three chains, two timing chains and a drive chain. You can get those already sized to length from Todd at da Vinci. The chainrings are actually Shimano HyperGlide cogs and Todd...
07-30-20, 08:28 PM
Replies: 7
Views: 1,854
Posted By Joint Venture

The Grand Junction is a strong value! Our Joint...

The Grand Junction is a strong value! Our Joint Venture is a 2016, so it has the Campy Ergo shifters that allow for the 4x shifting because of the micro clicks on the left shifter. I think this was...
07-30-20, 02:04 PM
Replies: 7
Views: 1,854
Posted By Joint Venture

We have the 19t cogs. With an 11-36 10-speed...

We have the 19t cogs. With an 11-36 10-speed cassette, we have a gear range of 15-122 inches! Typically we run an 11-32 cassette, but since we moved recently to SW Ohio, with hundreds of miles of...
07-30-20, 01:29 PM
Replies: 40
Views: 6,154
Posted By Joint Venture

If one of the 3 chains themselves are not...

If one of the 3 chains themselves are not actually skipping on a chainring or a cog, I would look at your cassette freehub and the ICS double block freewheel mechanism as possible sources of the...
07-30-20, 01:24 PM
Replies: 7
Views: 1,854
Posted By Joint Venture

Thanks for the detailed review! We’ve ridden da...

Thanks for the detailed review! We’ve ridden da Vinci tandems since 2001 and have ridden a tandem since 1990. By the way, you can lower the entire gear range on a da Vinci by changing the double...
07-19-20, 01:39 PM
Replies: 4
Views: 862
Posted By Joint Venture

I put Schwalbe Marathon Supreme HS469 26” x 2.0”...

I put Schwalbe Marathon Supreme HS469 26” x 2.0” on our da Vinci Joint Venture a few months ago and it’s been a revelation. They replaced Panaracer 26” x 1.5” RiBMos and not only are they much more...
06-28-20, 07:13 AM
Replies: 12
Views: 1,759
Posted By Joint Venture

That just might be the buy of the year!!

That just might be the buy of the year!!
06-15-20, 05:08 PM
Replies: 37
Views: 4,223
Posted By Joint Venture

The da Vinci ICS does not allow for different...

The da Vinci ICS does not allow for different cadence between captain and stoker. It allows for independent coasting. Also, it’s not easily retrofittable ... it requires some special design features...
02-08-20, 10:41 PM
Replies: 34
Views: 7,329
Posted By Joint Venture

Spinergy makes tandem rated wheels: ...

Spinergy makes tandem rated wheels:

​​​​​​​https://www.spinergy.com/store/category/bicycle/type/tandem
02-01-20, 12:10 PM
Replies: 24
Views: 4,020
Posted By Joint Venture

It was a weird lookin’ thing anyway! :)

It was a weird lookin’ thing anyway! :)
01-05-20, 09:01 AM
Replies: 24
Views: 4,020
Posted By Joint Venture

In the UK, Thorn and Dawes both make tandems...

In the UK, Thorn and Dawes both make tandems still.
01-04-20, 08:34 AM
Replies: 24
Views: 4,020
Posted By Joint Venture

Rans makes three tandem models - 2 recumbent and...

Rans makes three tandem models - 2 recumbent and 1 crank forward.
12-15-19, 08:00 AM
Replies: 6
Views: 1,749
Posted By Joint Venture

I think that’s the European site for Santana....

I think that’s the European site for Santana. Their main site, for North America, is:

http://santanatandem.com

No hyphen :)
Showing results 1 to 50 of 83
 


 
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