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Search: Posts Made By: Alan_F
Showing results 1 to 50 of 54
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Forum: Tandem Cycling
06-22-23, 06:25 AM
Replies: 5
Views: 1,106
Posted By Alan_F

2x the rated max pressure used to be the claimed...

2x the rated max pressure used to be the claimed industry standard, but it looks like with tubeless (and hookless) designs, that may have changed. I found this in a 2020 article about tubeless:...
Forum: Tandem Cycling
06-17-23, 05:17 PM
Replies: 5
Views: 1,106
Posted By Alan_F

Conti Grand Prix 5000 S TR

Is anyone using the Continental Grand Prix 5000 S TR (tubeless) on their tandem? If so, have you pushed them beyond the rated max pressure without any issues?

We've been riding Spinergy FCC 32's...
Forum: Tandem Cycling
07-19-21, 07:38 AM
Replies: 83
Views: 14,834
Posted By Alan_F

There is one likely candidate left. If you had...

There is one likely candidate left. If you had enough miles on the chains, the freewheels on the double freewheel block (DFB) may be worn and grinding on the new timing chain. I had this happen back...
Forum: Tandem Cycling
07-18-21, 02:12 PM
Replies: 83
Views: 14,834
Posted By Alan_F

As the previous poster mentioned, there is one...

As the previous poster mentioned, there is one set of splines that are narrower/wider than the others to ensure the cogs always go onto the splines in the same relative positions. The cogs will only...
Forum: Tandem Cycling
07-15-21, 06:57 PM
Replies: 83
Views: 14,834
Posted By Alan_F

As Joint Venture said, the threading on the...

As Joint Venture said, the threading on the lockring is standard 'lefty loosie, righty tighty'. Make sure you keep the lockring spanner lined up when you start increasing the torque as they can slip...
Forum: Tandem Cycling
07-08-21, 12:20 PM
Replies: 83
Views: 14,834
Posted By Alan_F

I haven't checked the forum in a while, so this...

I haven't checked the forum in a while, so this advice may be a bit late, but as a multi-DaVinci owner (some 4x, some 3x drivetrains) I recommend that you upgrade from your chain whip to the Park...
Forum: Tandem Cycling
06-10-21, 07:54 AM
Replies: 17
Views: 4,455
Posted By Alan_F

I was going to recommend the Rocky Mounts Tandem...

I was going to recommend the Rocky Mounts Tandem Tailpipe from Tandems East (https://tandemseast.com/bike-racks/) but it looks like your tandem uses an internally geared hub which means taking the...
Forum: Tandem Cycling
05-10-21, 03:04 PM
Replies: 32
Views: 5,776
Posted By Alan_F

The key word there is 'effective'. It is a...

The key word there is 'effective'. It is a DaVinci and the rings are physically 28/21/13, so as far as the front derailleur is concerned the jumps are 7 and 8 teeth for a total of 15 from top to...
Forum: Tandem Cycling
03-18-21, 07:15 AM
Replies: 21
Views: 7,864
Posted By Alan_F

+1 for the Grand Prix 4-Seasons. We used to use...

+1 for the Grand Prix 4-Seasons. We used to use Gatorskins but the 4-Seasons are lighter, wider for any given stated size, and seem to ride better. We've had one flat on 4-Seasons that I don't think...
Forum: Tandem Cycling
03-18-21, 06:01 AM
Replies: 21
Views: 5,405
Posted By Alan_F

We have Shimano Di2 w/ hydraulic disks on our...

We have Shimano Di2 w/ hydraulic disks on our coupled DaVinci. It was built with open cable/hose guides that secure the brake line with a zip tie. When packing the bike I cut 3 zip ties along the...
Forum: Tandem Cycling
03-11-21, 02:07 PM
Replies: 40
Views: 6,258
Posted By Alan_F

The leverage means less force at the brake lever,...

The leverage means less force at the brake lever, not less energy. Moving the Earth with Archimedes' lever wouldn't require any less energy than moving it by hand. The lever would allow you to apply...
Forum: Tandem Cycling
03-06-21, 07:15 AM
Replies: 40
Views: 6,258
Posted By Alan_F

I haven't been in a science classroom in a very...

I haven't been in a science classroom in a very long time, but your second point doesn't make sense to me. Regardless of the mechanical advantage, a brake converts kinetic energy to heat energy. The...
Forum: Tandem Cycling
12-13-20, 08:01 AM
Replies: 87
Views: 22,208
Posted By Alan_F

Beginning 47. Current 99. We'll break into...

Beginning 47. Current 99.

We'll break into the triple digits in a couple of months.
Forum: Tandem Cycling
12-13-20, 07:43 AM
Replies: 32
Views: 5,776
Posted By Alan_F

I'm assuming that the posters who find the...

I'm assuming that the posters who find the default shift pattern for Di2 road levers to not be intuitive haven't ridden Shimano mechanical road STI, because they work exactly the same, and Shimano...
Forum: Tandem Cycling
10-25-20, 08:43 PM
Replies: 10
Views: 2,065
Posted By Alan_F

Most of my Spinergy wheels have been built with...

Most of my Spinergy wheels have been built with their bladed spokes. I think you're referring to the round spokes when you said they are wider. My first set had round spokes and they definitely...
Forum: Tandem Cycling
10-22-20, 06:21 AM
Replies: 7
Views: 2,290
Posted By Alan_F

-disc vs. rim? Disc. No questions. Better in...

-disc vs. rim?

Disc. No questions. Better in the wet, safer when they get hot, require less adjustment and fiddling, easier to replace a worn rotor than a worn rim.

-cable vs. hydro?
...
Forum: Tandem Cycling
10-19-20, 11:45 AM
Replies: 10
Views: 2,065
Posted By Alan_F

I've been very happy with Spinergy wheels. I've...

I've been very happy with Spinergy wheels. I've had a few different models on both tandem and single bikes and am currently running their full carbon clinchers on both my road tandem and primary...
Forum: Tandem Cycling
08-17-20, 10:38 AM
Replies: 40
Views: 7,404
Posted By Alan_F

Just slightly harder than on a regular tandem...

Just slightly harder than on a regular tandem because there are 3 chains and two eccentrics to deal with.

I'll usually thoroughly clean the chains with degreaser before installing as the factory...
Forum: Tandem Cycling
08-13-20, 02:08 PM
Replies: 40
Views: 7,404
Posted By Alan_F

I'll add one bit of advice to the excellent...

I'll add one bit of advice to the excellent advice already offered by others: Don't replace just your chain immediately before going on a week-long tour (or a century ride, or any other big event)....
Forum: Tandem Cycling
08-13-20, 01:46 PM
Replies: 7
Views: 3,971
Posted By Alan_F

Nice review of the ICS benefits. We've been...

Nice review of the ICS benefits. We've been tandeming since 1995 and DaVinci riders since 2008. We've had two mechanical 4x9 drivetrains and two 3x11 drivetrains with one of them Di2 and one...
Forum: Tandem Cycling
08-13-20, 07:41 AM
Replies: 22
Views: 3,032
Posted By Alan_F

When the "she's not pedaling" is from another...

When the "she's not pedaling" is from another cyclist the best I've been able to come up with is "It looks like your partner didn't even show up!"

I was also wondering the other day... when two...
Forum: Tandem Cycling
06-12-20, 02:27 PM
Replies: 15
Views: 3,217
Posted By Alan_F

I'm pretty late to this thread so I'll be brief...

I'm pretty late to this thread so I'll be brief as I think I've posted about these brakes before in other threads. We swapped from Avid BB7 to Hy/Rd on a previous tandem and loved them. We had to use...
Forum: Tandem Cycling
12-15-19, 07:18 AM
Replies: 15
Views: 5,569
Posted By Alan_F

Late to the thread - but same here. We stopped...

Late to the thread - but same here. We stopped using a suspension post on the road tandem years ago. My wife is 5'00" which means that any change in saddle height is proportionally more significant...
Forum: Tandem Cycling
10-30-19, 06:51 AM
Replies: 4
Views: 1,576
Posted By Alan_F

Nice looking bike! First MTN tandem? What are the...

Nice looking bike! First MTN tandem? What are the wheel and tire sizes?

Are the 50+ mile events on technical singletrack or are they more gravel and flowing trails? We just did a 31 mile ride...
Forum: Tandem Cycling
09-06-19, 05:12 PM
Replies: 11
Views: 3,406
Posted By Alan_F

I can't directly answer you question, but I'll...

I can't directly answer you question, but I'll offer my $.02 in case it helps.

We upgraded our previous DaVinci Joint Venture from Avid BB7 to TRP Hy/Rd. That is the cable activated hydraulic...
Forum: Tandem Cycling
09-06-19, 04:52 PM
Replies: 8
Views: 4,444
Posted By Alan_F

I'm guessing that a 2008 Grand Junction was not...

I'm guessing that a 2008 Grand Junction was not set up for dual disc brakes. If that is the case, then it probably isn't practical to convert to 700c. With rim brakes the cantilever mounting studs...
Forum: Tandem Cycling
07-29-19, 06:54 AM
Replies: 15
Views: 3,849
Posted By Alan_F

I split the difference and am running Conti Grand...

I split the difference and am running Conti Grand Prix 4 Season tires on our tandem. I used Gatorskins for many years with good results, but if you look at the rolling resistance tests the 4 Seasons...
Forum: Tandem Cycling
07-08-19, 12:16 PM
Replies: 10
Views: 4,274
Posted By Alan_F

Our last two road tandems have used Wound-Up X2...

Our last two road tandems have used Wound-Up X2 forks without any fender mounting points, but the rear of the bikes had threaded mounting points at the rear bottom bracket, seatstay bridge, and rack...
Forum: Tandem Cycling
01-30-19, 05:30 PM
Replies: 13
Views: 2,723
Posted By Alan_F

Yup - it is a 13/21/29 so equivalent to 26/42/58...

Yup - it is a 13/21/29 so equivalent to 26/42/58 with an 11 speed 11-40 in the back. One of the advantages of the DaVinci system is that it allows you to run an XTR triple within its designed...
Forum: Tandem Cycling
01-22-19, 02:21 PM
Replies: 17
Views: 4,180
Posted By Alan_F

Are you looking at a custom bike or something...

Are you looking at a custom bike or something stock? For your weight I'd consider going with a custom bike so the builder can tailor it to your team and intended use. It might not cost as much as...
Forum: Tandem Cycling
01-22-19, 02:00 PM
Replies: 13
Views: 2,723
Posted By Alan_F

At 460# and considering loaded touring you...

At 460# and considering loaded touring you probably want a wide range of gears and a pretty low granny. As the happy owner of 4 DaVinci tandems (2 road, 2 MTB), with the latest being a Ti S&S road...
Forum: Tandem Cycling
01-13-19, 12:04 PM
Replies: 15
Views: 7,816
Posted By Alan_F

You are probably right on the edge of fitting...

You are probably right on the edge of fitting many large/small tandems as others have said. I am 6'00 and my wife is 5'00 and we have ridden L/S Canndondales, Treks, and DaVincis. We haven't used a...
Forum: Tandem Cycling
01-13-19, 05:54 AM
Replies: 59
Views: 8,494
Posted By Alan_F

To the OP, I switched our former road tandem from...

To the OP, I switched our former road tandem from BB-7 to Hy/Rd a short while before upgrading the whole bike to one with Di2 full hydraulic, so I have experience with a number of options. If you can...
Forum: Tandem Cycling
07-13-18, 09:20 AM
Replies: 77
Views: 8,077
Posted By Alan_F

Having four DaVinci's in the basement at the...

Having four DaVinci's in the basement at the moment (but trying to reduce that to 3... check tandemclassifieds.com if you want one!) I have some experience with the DaVinci drivetrain including using...
Forum: Tandem Cycling
07-06-18, 08:56 AM
Replies: 4
Views: 1,842
Posted By Alan_F

If you aren't already using CatEars...

If you aren't already using CatEars (https://www.cat-ears.com/) I'd start with those to reduce wind noise and see if that solves the communications issue.

We haven't tried anything integrated into...
Forum: Tandem Cycling
06-25-18, 06:14 AM
Replies: 41
Views: 15,631
Posted By Alan_F

If your 5-figure Ti tandem is 'whippy' then they...

If your 5-figure Ti tandem is 'whippy' then they built it wrong. There is nothing inherent in the material that results in a whippy frame.

I only have a few hundred miles on our new Ti DaVinci,...
Forum: Tandem Cycling
06-11-18, 10:42 AM
Replies: 8
Views: 1,818
Posted By Alan_F

When we rode N Table we met up with Vincent and...

When we rode N Table we met up with Vincent and Lisa who must be your neighbors. We rode right from their house to the trail.
Forum: Tandem Cycling
06-06-18, 08:20 AM
Replies: 8
Views: 1,818
Posted By Alan_F

Yes, we were out there for the last week of May...

Yes, we were out there for the last week of May and are back home now. We ended up riding the Dirty Bismark route suggested above, plus North Table Mountain, Green Mountain / Hayden Park, and Bear...
Forum: Tandem Cycling
06-04-18, 12:50 PM
Replies: 5
Views: 4,076
Posted By Alan_F

The rear hydraulic line is kept in the frame...

The rear hydraulic line is kept in the frame guides by small zip ties. Three of the zip ties (the three closest to the rear brake) are cut when we break down the bike and replaced during reassembly....
Forum: Tandem Cycling
06-04-18, 12:44 PM
Replies: 5
Views: 4,076
Posted By Alan_F

Thanks Mike. The Symbiosis is painted Sunrise...

Thanks Mike. The Symbiosis is painted Sunrise Pearl (House of Kolor PBC30) with a fade to black at the rear to match the black fork. We're very happy with the results.
Forum: Tandem Cycling
06-03-18, 08:13 PM
Replies: 5
Views: 4,076
Posted By Alan_F

Our New DaVinci Tandem(s)

Just got back from picking up our new bikes. We already have an aluminum Joint Venture (to be advertised for sale soon) and a steel Symbiosis XC hardtail 29" MTB. We decided to upgrade the road bike...
Forum: Tandem Cycling
05-16-18, 07:45 AM
Replies: 58
Views: 16,820
Posted By Alan_F

Personally I wouldn't count these as a deep rim...

Personally I wouldn't count these as a deep rim wheelset. The 47mm version is deeper, probably more aero, and probably more of a handful in crosswinds. The 32mm are just a general use wheel. My...
Forum: Tandem Cycling
05-15-18, 01:59 PM
Replies: 58
Views: 16,820
Posted By Alan_F

Real-world weights for the Spinergy Full Carbon...

Real-world weights for the Spinergy Full Carbon Clincher 32mm (FCC 3.2) - disc brake hubs with 145mm x 25mm rear spacing - 895 grams rear, 732 grams front - 1,627 grams total.
Forum: Tandem Cycling
05-04-18, 01:54 PM
Replies: 24
Views: 5,145
Posted By Alan_F

That's not a big gear range... (says the DaVinci...

That's not a big gear range... (says the DaVinci rider). Whether it is necessary depends on the terrain and the team's abilities.

Warning - lots of numbers ahead: Our current road tandem has 34...
Forum: Tandem Cycling
04-23-18, 08:46 AM
Replies: 58
Views: 16,820
Posted By Alan_F

There is a tandem-specific version of these...

There is a tandem-specific version of these wheels, but it looks like neither Spinergy nor House of Tandems (the Spinergy tandem distributor) has any info about them on their web sites. AFAIK they...
Forum: Tandem Cycling
04-22-18, 04:12 PM
Replies: 58
Views: 16,820
Posted By Alan_F

I just decided to go with the Spinergy Full...

I just decided to go with the Spinergy Full Carbon 3.2 (32mm depth) on our new tandem, having used Spinergy TX-2s (light but not very aero) and Spinergy Stealth (aero but not very light) over the...
Forum: Tandem Cycling
03-28-18, 11:50 AM
Replies: 8
Views: 1,818
Posted By Alan_F

MTB routes - Denver area

Is there anyone on the forum with experience off-road tandeming in the Denver area?

We're going to be travelling to Denver in a few months to pick up two new tandems from DaVinci - a road tandem...
Forum: Tandem Cycling
03-26-18, 02:07 PM
Replies: 45
Views: 10,544
Posted By Alan_F

I was thinking the builder may have had good...

I was thinking the builder may have had good reasons for suggesting 26" based on the handling of the bike that would result with larger wheels and the frame size you need, but this information about...
Forum: Tandem Cycling
02-02-18, 06:46 AM
Replies: 28
Views: 6,321
Posted By Alan_F

I started reading this without noticing how old...

I started reading this without noticing how old the original posts were, but I kept thinking how many of the posts were to the effect of "I've never tried ICS (on road/off road) but I'm sure that it...
Forum: Tandem Cycling
01-22-18, 11:19 AM
Replies: 18
Views: 7,671
Posted By Alan_F

I can't speak to your exact situation with 650B...

I can't speak to your exact situation with 650B and gravel use, but I have been using Spinergy wheels on our aluminum DaVinci Joint Venture road tandem for several years. We started with the TX-2 and...
Showing results 1 to 50 of 54
 
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