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Calfee Design
Bicycles and Components, Carbon Repair, DIY KitsMore video content is coming to youtube… 16 Aug 2021, 11:28 pm
Subscribe to our channel at YouTube to keep up with the Cephal
Calfee Design 1-800-965-2171
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The issue: Pedal Sensing and Torque Sensing 10 Jun 2021, 4:28 pm
Which is better and why…
“Cadence or torque sensors tell an electric bike’s pedal-assist system (PAS) when to engage the motor and propel the e-bike forward. … ”
–evelo
A common usage in the bicycle manufacturing industry is that a cadence sensor determines if you are pedaling and direction (forward or backward) while a torque sensor in addition measures how hard you are pedaling. Both systems require the use of a computer to detect the pedaling and determine the signaling sent to the controller that in turn powers the motor.
Often stated, toques sensing is better, is an opinion about the rider’s response to a type of ride quality. The feel of torque sensing is a combination of responsiveness and subtle increase in power as you increase the force of pedaling. This produces a unique sensation of increased power and thus strength to the rider’s effort. Most common implementation of this on a retrofit bike is a bottom bracket loaded with a torque sensing crankset, available in square taper and ISIS as of this writing.
Cadence and pedal detection can be done in a number of ways. On our Electrofit the sensing is done with a magnet ring attached to the innermost chainring and a below the BB sensor that reads the magnet ring. Our system detects direction of the pedaling as well. This information is used to power the motor which becomes very responsive and smooth when engaging.
The answer to which is better is subjective and is perhaps best understood as a restriction of application as torque sensing in a retrofit restricts the use of cranks to a set described here. The traditional road bike enthusiasts wishing to retrofit their existing platform will immediately realize the issue, there isn’t much choice.
More information on power leveling is on the way in the next Electrofit blog entry.
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Now is your chance to try the Cephal in the wild! 5 May 2021, 9:38 pm
Calfee Design, Unbound!
Look for us June 3rd to 5th at the Unbound Gravel event next month!
Calfee design will be showcasing our handmade products and new bike build plus a chance to ride a Calfee Adventure bike. Plus Calfee Design returns to the mountain bike scene with a brand NEW CEPHAL. Come find our booth in the expo to view our latest offerings!
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Calfee Design Adventure Bikes
 Calfee Cage |
 Stoker Stem |
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Additional Calfee products will be available at our booth
Now is your chance to try the Cephal in the wild!
The Cephal will be at Unbound in Emporia, Kansas, June 1st to June 3rd
Have a chance to see the Cephal in person at the Unbound Gravel event, demo ride sign-up the day of event.
Also at these locations
- Left Hand Trail in Colorado May 30th
- Bentenville June 7th
Cephal
(A highly intelligent, agile, adaptable creature that takes on many shapes and forms to suit its needs)
N-1 mountain bike
Whose geometry can be changed in minutes
To suit your riding style, trail conditions and emotions!
- The molded chainstays and seatstays offer incredible suppleness and traction for the rear tire
- Available in 148 Boost Spacing
- You choose the geometry, fork, components, and we do the rest
- Handmade in La Selva Beach, California!
The Cephal promises to be a hardtail unlike any other.
Starting at $3,600.
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Calfee Customer Profile: Jim Takasugi, Electric Retrofit 12 Feb 2021, 5:59 pm
A look into the electric retrofit.
Our recent customer Jim Takasugi had his Volagi Liscio2 retrofitted with our rear conversion system. He has done a wonderful job at describing his thinking that lead him to Calfee Design and his experience using the the retrofit system. Link to his article here.
Short excerpt below from Jim …
“Luckily, I eventually found the perfect builder, Calfee Design, to integrate and install the components into a cohesive road eBike. As you may know, Craig Calfee is renowned for having built Greg LeMond’s Tour de France road bikes, one of the first all carbon frame bikes used on the Tour. They’re industry experts in the carbon fiber frame technology, and one of a few places to fix a busted frame. Actually, Calfee turned out to be my only choice since they were the only builder who would use a carbon frame bike for conversion. Every other eBike builder I talked to told me carbon fiber frames were too fragile to take the motor stress. Is this true? or just parroting industry “truism” steering me into buying one of their off-the-shelf eBikes?
Craig said convincingly: the torque generated by disc brake is generally greater than the torque generated by a motor I would be using. Given the right carbon fiber fork, conversion is feasible.
Go here for the full story >
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Calfee Design now accepts Bitcoin 9 Dec 2020, 5:25 pm
Our online store now accepts Bitcoin as form of payment.
SHOP NOW
[products limit=”4″ skus=”467,995-1,995,SB0422″]
Calfee Design 1-800-965-2171
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20 Years Of Employment 14 Oct 2020, 7:28 pm
In the year 2020, it has been difficult to find reasons to celebrate, but at Calfee, we found a way! On Friday October 9th 2020, Calfee stopped production to acknowledge four individuals who have been working here for twenty years, WOW! With boxes of pizza, salad, chips, and desserts, it was a very special time to slow down and appreciate those who have helped us continue our level of excellence for so many years.
From Juan in Tandem Production, Augusto as our Carbon Repair Lead, Claudio in Single Frames and Bottle Cage Production, and Mario as our Quality Control Manager, our four team members have kept Calfee moving forward for two decades. Thanks gentlemen for all your dedication and excellence to the brand.
-An unmasked group photo of the Calfee team. Don’t worry, we all held our breath and immediately washed our hands. It was a special moment to have our whole team present at the Calfee HQ (except for Josh from repairs who took the photo, drawing the longest straw of the group).
-Craig handing out Certificates of Excellence
-Let us not forget Jose Cerezo who has been with us now for ten years! Thanks Cerezo for your diligent nature.
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New DIY Bike – Cottingham 11 Jun 2020, 12:15 am
First, hope you and the Calfee folks are all healthy and still able to work during the pandemic.
Second, thanks again for all your assistance as I was building my bamboo frame. I finished the frame and built it out with fun SRAM gravel components. I’m enjoying riding it and getting lots of compliments about it. It really rides well.
Since this is the first frame I’ve ever built, you and Craig’s videos were indispensable.
I might change a few minor things that didn’t quite work as planned. For instance,
- I thought I had put in chain stays to allow for 650×42 tires. I installed 650 x 38 Gravel kings but even those were too wide. I have switched to 650 x 33. They will be fine. I focused on getting the outside edge of the chain stay on the bottom bracket. To get spacing I wanted, I think I should have tapered the chain stay a little bit. Does that make sense?
- I should have paid closer attention to intersection of head tube and down tube. I had plenty of room to have that joint several millimeters above the bottom of the aluminum tube. But I had it very close. With a Dremel tool and some sanding, I made it work.
I raise this point so if you ever issue any “addenda” to the videos, you might mention that.
Best and stay healthy during these crazy times.
David
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Charging your Retrofit System 10 Jan 2020, 7:10 pm
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Check your Charger
TipsOnce charged you can check the voltage level by turning the system on and looking at the handle bar volt meter. Full charge is around 42 volts. You should consider your battery empty at 34 volts and the system wont run below 33 volts. 400 watt system charges in ~ 2hours
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Calfee Design 1-800-965-2171
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18.5k Miles on Calfee Bamboo 25 Oct 2019, 8:54 pm
On July 4, 2010, Joost Notenboom and Michiel Roodenburg, began a 20 month bicycle journey from Deadhorse in northern Alaska to the Antarctic Peninsula south of Ushuaia. Their mission was to take one bottle of icy Alaskan water from the Beaufort Sea down to the seas around Antarctica in a symbolic effort to complete the natural water cycle and raise awareness for the global water crisis that is leaving over 1 billion people around the world without access to safe and clean drinking water.
This incredible adventure took them through sixteen countries and across roughly 30.000 km of paved and unpaved roads, mountain passes, and dirt tracks. The trip started above the Arctic Circle and other regions along the way included the Alaskan and Canadian wilderness, the forests of the Pacific Northwest, the desert areas of Baja, the rainforests of Central and South America, the Andes highlands of Peru and Bolivia, the steppes of Patagonia, and the ice sheets of Antarctica.
To make this an even greater challenge, Cycle for Water was the first ever attempt to do all this by cycling the entire route on bamboo bicycles. This was a critical component towards minimizing the team’s carbon footprint and to demonstrate that many challenges can be overcome by using sustainable solutions.
We received this email from the Cycle for Water team on March 30, 2012. In their own words;
“Twenty months ago, me and my buddy Joost started cycling from Alaska, going south on two of your bamboo bicycles. I’m very happy to report that we made it to Ushuaia, the southernmost city in the America’s after a 12.000 mile trip. It was the first successful cycling expedition from Alaska to Argentina on bamboo bicycles!
The bamboo bicycles performed perfectly and after putting in the bamboo spokes at your workshop, did not have any problems with broken spokes whatsoever.
One of the things we learned on this trip was the importance of teamwork; not only the two of us working together, but also all the people and organizations that supported us along the way. In short, we couldn’t have done it without you and the bamboo bicycles. The bikes created so much attention and together with our mission to raise awareness for the global water crisis, which is leaving 1 billion people on this earth without access to clean drinking water, we were able to get a lot of press and media interested. Our highlight: 6 interviews with CNN.
Along the way we spoke at many schools, universities and companies. And the bamboo bicycles were always in the center of attention.
Long distance bicycle touring on bamboo bicycles is not a very common thing, but I hope we inspired some people to choose bamboo.
Last cool thing I wanted to mention; we actually took one of the bikes with us to Antarctica where we cycled a couple of miles on the ice. We think this might be the first time a Calfee Design/bamboo bicycle made it to the icy continent, the last true wilderness on earth.
Thanks again for all your support and the great bicycles, of course. They are truly pieces of art, but very functional at the same time.
Kind regards,
Joost and Michiel
PS; find attached a couple of pictures of us and the bamboo bikes!”
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Calfee Design At 2019 NAHBS 25 Apr 2019, 9:18 pm
From Cycling Tips, a photo mention of Calfee Design products at the 2019 NAHBS in Sacramento California, carbon bottle cages and Bamboo products.
“You didn’t think we were done with NAHBS, did you? Our coverage of the world’s premier showcase of custom bicycles has obviously now intermingled with our tech coverage of the Sea Otter Classic, but there’s no reason why the two worlds can’t peacefully co-exist, at least temporarily. This fourth — and final — gallery from NAHBS focuses on the parts and accessories that turn those custom framesets into complete bikes.”
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