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26/26 vs 26/20 (Read 10415 times)
AustinSkater






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Re: 26/26 vs 26/20
Reply #15 - Aug 8th, 2013, 7:33am
 
Quote from Seavo_Sam on Aug 7th, 2013, 1:56pm:
Now that I/we are hooked on the Rans Seavo tandem, it is time to start looking at replacing my single bike!!!!  Is there much/any performance differences between a bike with dual 26 inch(or 650) wheels and a bike with a 26 inch rear and 20 inch front?

Thanks for your input.

Sam

 
Undoing the thread-jack briefly.  
 
One thing to consider on riding a bike with two different sized tires means you end up carrying at least twice the spare tubes, and if you're riding ultra-distance the odds are you will be carrying a spare tire as well.  Easier to only have to deal with one size.
 
Ok, back to the regularly scheduled thread-jack.
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Bud_Bent
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Re: 26/26 vs 26/20
Reply #16 - Aug 8th, 2013, 9:08am
 
Quote from TonyWard on Aug 7th, 2013, 6:23pm:
You would probably be better off asking that question on BROL

You can find as much BS and disagreement on BROL as anywhere else. So much of the arguing there is done by engineering types who don't ride enough miles to really have a clue.
 
My own experience is that the high racer platform is the best combination of speed and comfort. Of course, YMMV. Mark L does pretty well on his Baron, and Paul gets around smartly on his Xstream, too. What kind of bike a rider likes best makes a big difference. But, if I had believed what I was reading on BROL at the time, I would have thought that a P-38 was faster than my Corsa. That was disproved, riding with Greg. He was faster than me on any other bike he rode, other than a V-Rex, but he was slower than me on his P-38. Any bike that puts you sitting very upright without a fairing will be slower than something more aerodynamic.
 
But you have to be fast enough to take advantage of the aerodynamics. Every year at HHH, I see riders on velomobiles and fully faired and socked bikes creeping along. If you average 11 mph on your bike, a very aerodynamic bike won't help much.
 
If you run small wheels, run wider tires. Small wheels with narrow tires don't handle rough roads well at all. And don't underestimate the comfort factor, especially on longer rides. It's a big player in my calling my Corsa the best combination of speed and comfort around. The big wheels do help, especially on rough roads. But, I've seen people saying that 700C wheels make a bike a lot faster (even Greg is guilty of that claim).  
 
I call BS on that. My own experience is that once you get up to 559 (26"), the gains from bigger wheels are very small. When he rode RAAM solo, John Schlitter chose Corsas with 650C wheels.  I'll put his ultra distance racing knowledge up against that of any recumbent rider. If you are a heavier rider like me (185 lbs) and you do end up on rough roads quite a bit, then a 700C bike is probably worth considering. But don't expect the 700C's to be a magic bullet.
 
There are those who think the LWB bikes are as good or better than high racers, but I don't share that view. The Xstream is probably the fastest of the non-faired LWB's, but if you recline the seat enough to be as aerodynamic as on a Corsa, the handling suffers. I can balance my Corsa perfectly at 3.5 mph on a steep climb. I couldn't do that with the seat really reclined on my Xstream.
 
I've liked my Xstream better since I put a more upright Sling Mesh seat and a fairing on it. But with most of my weight on the rear wheel, rough roads really jar me. I love that fairing in the winter, and the Xstream is a blast to ride, but I'll never use it for the long rides where I love the Corsa.
 
There are also people who prefer the low racer platform over everything else, but I never liked my view of the road well enough on something really low to want to do lots of miles on it.
 
The other thing that people argue about is what material a bike should be built from. Steel tends to make a bike heavy, but gives a great ride. Carbon fiber makes for a lighter, but very stiff, bike. Aluminum is a good compromise, but has a reputation of not lasting as long as steel. I now have well over 20,000 miles on my Corsa, so I'm saying a well built aluminum bike can last pretty well, and I'll likely be shopping for another aluminum bike when the Corsa frame finally does give it up. My thoughts are that for light weight riders, the light, stiff carbon fiber bikes may be best, but for those of us my size or bigger, the speed gain from a bike lighter than 24 lbs is virtually zero, and we're better off with either aluminum or steel.
 
So there are my thoughts. Take them for what they're worth, which may not be much, but still more than most of what you'll read on BROL.
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« Last Edit: Aug 8th, 2013, 10:35am by Bud_Bent »  

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Seavo_Sam






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Re: 26/26 vs 26/20
Reply #17 - Aug 8th, 2013, 10:28am
 
Thanks everyone for all the info, both on topic and hijacked!!!  Smiley  I love the Bozo jersey, I think my first lunch box was a Bozo the clown lunch box, probably could buy a new Corsa with its proceeds if I still had it!!!  
 
I really like the dual 26/650/700 Giro/Strada/Corsa bikes, but have seen some 26/20 Giros for sale and wondering if that would do me.  I am by no means a speed racer, but want to cruise along at a decent speed.  When in shape on the old DF would average 16-17.  Not in it to kill myself, but want to cruise along at a decent speed when by myself and not on the Seavo.  And I don't want to get back on that bike.  Would mind to take the 700 wheels and Ultegra componentry off it though and use it on a high racer.
 
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Seavo_Sam






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Re: 26/26 vs 26/20
Reply #18 - Aug 8th, 2013, 10:29am
 
Wouldn't mind, not would mind!!!  Wink  ooppss
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rmillay
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Re: 26/26 vs 26/20
Reply #19 - Aug 8th, 2013, 4:41pm
 
Experience says the P-38 is a great climber, but with the skinny tires, poorer aerodynamics, and smaller front wheel, would have a rougher ride, and be harder to make speed on the flats.  I know the Corsa can go fast (I've watched Kickstand Larry dust me on the trails), and there are plenty of them around, so good used ones come up for sale often.  But, speed aside, there lots of things to buy a bike for.  My Moose is a 700/20, but is quite comfortable to ride, even on our dreadful roads.  In a lot of ways, it hits a sweet spot for me.  So take some test rides to see if the high racer pops your cork.  I'll agree 650 vs 700 is not a convincing speed argument, although 700s might roll a little more sweetly over chip seal, but 700s are hot now, and 650s more easily available.  I say buy cheap, upgrade at leisure.
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LightningPilot






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Re: 26/26 vs 26/20
Reply #20 - Aug 8th, 2013, 4:54pm
 
And I love my Lightnings Smiley It appears that everyone likes their own bikes.
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AustinSkater






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Re: 26/26 vs 26/20
Reply #21 - Aug 8th, 2013, 4:56pm
 
Quote from LightningPilot on Aug 8th, 2013, 4:54pm:
And I love my Lightnings Smiley It appears that everyone likes their own bikes.

 
The ultimate words of wisdom.  I would take my 650 Corsa over any bike in my fleet, if I was told I could only have one.
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LightningPilot






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Re: 26/26 vs 26/20
Reply #22 - Aug 8th, 2013, 6:12pm
 
Quote from AustinSkater on Aug 8th, 2013, 4:56pm:
Quote from LightningPilot on Aug 8th, 2013, 4:54pm:
And I love my Lightnings Smiley It appears that everyone likes their own bikes.


The ultimate words of wisdom.  I would take my 650 Corsa over any bike in my fleet, if I was told I could only have one.

 Smiley
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jayg
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Re: 26/26 vs 26/20
Reply #23 - Aug 8th, 2013, 6:32pm
 
A few more comments based upon my experiences: I own a 700c carbon high racer (Carbent Raven) that I've ridden about 8,000 miles. It is a stiff bike, and the lightest bike I have ever owned. It doesn't seem much faster on the flats than my 451/700c, aluminum Musashi (8,800 miles on the computer), but it does climb hills faster. For that reason I prefer to ride it on hilly rides. For light riders like myself (I weigh 143 pounds), it is a handful in high cross winds (The Musashi is not). I don't recall experiencing cross wind handling problems with the 650c Corsa I used to own. The Carbent's 700c wheels do provide a better riding experience on chipseal than the Musashi's 451/700c combo and my Baron's 406/559 combo.
 
The Carbent is glued together. In May of this year, the rear of the bike shifted a little and the carbon seat's glue joint failed, as I was transporting the bike to the Lancaster rally. If I had known the bike was that delicate, and that I would experience handling problems with it, I would have purchased the slightly-heavier, and more robust, 700c CA 2.0. If I had been on a budget, I would have purchased a 700c Corsa and lost 7 pounds (Assuming I could have spared them  Smiley).
 
As stated in previous posts, we all have our personal preferences. I've owned a lot of recumbent bikes (LWB, SWB, FWD, low racers, mid racers, and high racers). If I could only have one, it would be the Musashi - an all around great bike IMO. There must be some reason why Sandy Earl replaced her Carbent with a Musashi.  Smiley
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Tiger_Mike




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Re: 26/26 vs 26/20
Reply #24 - Aug 8th, 2013, 7:50pm
 
I don't have near the experience of Jay or Bud, but I've got some opinions too - My Xstream climbs much better than my heavier V2. I'm a fat guy at 190 lbs, and the 26/20 on the V2 did well for me. When I got the XStream with dual 650C's on it, I learned all about pinch flats. Those mostly went away once I got smart enough to run 125 psi in the tires, but that made the ride pretty rough. Eventually, I had some really nice 26" wheels built for the Xstream and run 1.25 wide tires on them. For me, that makes the XStream a really nice riding bike. If I had a motor like Paul, my XStream would be way faster for me than the more upright V2 - it is faster for me, but I'm slow enough that the better aero only helps a little bit.
 
I do like having to carry only one spare tube, but that's a minor concern to me (I don't Rando). My 2 cents...
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TonyWard
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Re: 26/26 vs 26/20
Reply #25 - Aug 8th, 2013, 8:12pm
 
Quote from rmillay on Aug 8th, 2013, 4:41pm:
I'll agree 650 vs 700 is not a convincing speed argument, although 700s might roll a little more sweetly over chip seal, but 700s are hot now, and 650s more easily available.  I say buy cheap, upgrade at leisure.

 
I owned and recently sold a 650c Corsa and upgraded to a newer 700c Corsa.  I can't tell a noticeable difference in speed between the two.  To me one of the biggest reasons for my "upgrade" was getting on a standard wheel size.  It is nice to be able to walk in and buy the same tires/tubes that everyone else does.  Being able to share tubes with other riders (roadies) and the possibility of event support having the right size tube for you appeals to me.  That being said - you can buy a lot of tires and tubes to keep on hand for the price difference.  I guess in my mind I decided the convenience was "worth it".
 
If one was buying new - I don't know why you would elect to buy 650 when 700 was available for a comparable price.
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FlyingLaZBoy
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Re: 26/26 vs 26/20
Reply #26 - Aug 12th, 2013, 1:27pm
 
I wouldn't think there would be much perceived rolling speed difference between 650 and 700 wheels in normal or even energetic riding - but the 700 does give you higher "top end" speed when you reach spinout, simply due to the larger diameter...
 
I'd like to see RANS do a 700 Xstream, to have that higher top end - and to make tire/tube exchange with other riders simpler. There's certainly no issue with reach to the ground - but they would need to modify the frame to allow sufficient recline of the seat.  
 
The downside to this would be that I'd have to purchase ANOTHER Xstream...  gawd...    Smiley
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AustinSkater






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Re: 26/26 vs 26/20
Reply #27 - Aug 12th, 2013, 2:52pm
 
Quote from FlyingLaZBoy on Aug 12th, 2013, 1:27pm:
I wouldn't think there would be much perceived rolling speed difference between 650 and 700 wheels in normal or even energetic riding - but the 700 does give you higher "top end" speed when you reach spinout, simply due to the larger diameter...

 
But a similar high end can be accomplished by putting a larger chainring on the front, my 56x11 with a 650 is slightly slower (per Sheldon Brown) than a 52x11 and less than 1MPH slower than a 53x11 on a 700.   That, and the bigger chain ring just looks impressive when it's passing a roadie on a climb.  Maybe I should look at a 57 for the front.  
 
I do agree that having 700s for tire/tube exchange is nice though (although when you're riding with a herd of 650 'bents you might be the odd man out on a 700).
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« Last Edit: Aug 12th, 2013, 2:52pm by AustinSkater »  

Bryan
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goatstick




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Re: 26/26 vs 26/20
Reply #28 - Aug 12th, 2013, 4:41pm
 
Quote from FlyingLaZBoy on Aug 12th, 2013, 1:27pm:
I wouldn't think there would be much perceived rolling speed difference between 650 and 700 wheels in normal or even energetic riding

After doing race after race with JS in 2011 when he was on his CA2-700 and I was on my old CA2-650 and us being pretty close to neck and neck when were working it together I thought the same thing. Then I moved to the CA2-700 and discovered the 700 really is faster, even at speeds in the low 20's and even though the CA2-700 frame is most likely less aero due to the greater inclined angle of the frame. The speed increase is both perceived and actual. In my case, the only difference was the frameset and the wheels. Not only that but when JS, Jac and I all moved to the 700s we all had a tendency to mash more because it was easier to get a little more speed out of the 700s when you did than when on a 650. So we had to teach ourselves to try to resist the temptation to get that little extra speed when doing a longer race and go back to spinning as we did more on the 650s. I suspect that the 'wall' is not quite as steep on 700s as on 650s.
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« Last Edit: Aug 12th, 2013, 4:41pm by goatstick »  

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Re: 26/26 vs 26/20
Reply #29 - Aug 12th, 2013, 10:18pm
 
Let me put my two cents in. I have a Bacchetta Giro 20, I have read this is Bacchetta's best seller, of all their bikes for the last ten years. And for good reason. After 30,000 plus miles on mine in about 8 years it is still is going strong, never, never a problem. I am SLOW on any bike, however, the company's racers say it is Very fast with a (and this is the tell all about how fast it will go ) fast rider on the seat. You might give it a look, the new Giro 20 ATT is a nice bike. You don't have to sell the house to buy one, the 20 is listed at 1700.00 and the 20 ATT @ 2100.00. Is also great on touring, if you every wanted to tow the little ones around the block or across the Good Ole US of A.
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