Kinekt seatpost
- Thread starter Fandomii
- Start date
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
It would be easy for you @Fandomii to use the Search feature of the forum, enter "Kinekt" in the Search field and also click "Search Titles Only".
I have used Kinekt 2.1 (350 mm) on my full-power Vado since May 2020 with excellent results.
electricbikereview.com
Now, I got a 420 mm Kinekt 2.1 from Specialized as a "warranty service gift" (to match a different size of a new Vado frame) and I could not be happier. It is the second best thing to having the rear suspension. You simply cannot feel the road bumps with your backside.
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A rider's body exerts vertical force on the saddle. A simple suspension seat-post involves a spring that is located along the seat-post. Only a small part (vector) of the force exerted by the rider's body is translated into the angular movement of the spring. Therefore, the simple suspension seat-posts have never worked well.
There are three solutions that make the suspension seat-post work:
I have tried two traditional suspension seat-posts on other e-bikes (ones with just a spring along the seat-post axis) and neither of them worked OK. Interestingly, one of those seat-posts had the "air spring" (similar to the rear suspension of MTB) and that did not work either, as the concept was just wrong.
I have used Kinekt 2.1 (350 mm) on my full-power Vado since May 2020 with excellent results.
Suspension seat post - Kinekt
The odyssey of the Kinekt 2.1 seat-post ended on May 8th, 2020. The original seat-post sent by CirrusCycles from Bellingham WA on March 27th is probably still stuck in SF CA with the USPS... The CirrusCycles agent BikeShore sent me a replacement product on April 18th, 2020 from Switzerland by...
electricbikereview.com
Now, I got a 420 mm Kinekt 2.1 from Specialized as a "warranty service gift" (to match a different size of a new Vado frame) and I could not be happier. It is the second best thing to having the rear suspension. You simply cannot feel the road bumps with your backside.
-------------------------
A rider's body exerts vertical force on the saddle. A simple suspension seat-post involves a spring that is located along the seat-post. Only a small part (vector) of the force exerted by the rider's body is translated into the angular movement of the spring. Therefore, the simple suspension seat-posts have never worked well.
There are three solutions that make the suspension seat-post work:
- Cirrus Cycles Kinekt 2.1 uses a parallelogram system to extend/contract two springs under the saddle. The vertical body force is translated into the springs' damping action. Kinekt 2.1 is available in 27.2, 30.9, and 31.6 mm seat-tube size
- RedShift ShockStop uses a set of springs along the seat-post axis but the rider's vertical body movements are translated by a parallelogram system. This seat-post is only available in 27.2 mm size but shims can be used for seat-tubes of bigger diameter.
- CaneCreek Thudbuster LT uses a parallelogram for translating the rider's vertical body force, and it uses elastomer for damping the shock. This seat-post is available in 27.2, 30.9, and 31.6 mm seat-tube size.
I have tried two traditional suspension seat-posts on other e-bikes (ones with just a spring along the seat-post axis) and neither of them worked OK. Interestingly, one of those seat-posts had the "air spring" (similar to the rear suspension of MTB) and that did not work either, as the concept was just wrong.
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Thank you Stefan - outstanding reply as usual.It would be easy for you @Fandomii to use the Search feature of the forum, enter "Kinekt" in the Search field and also click "Search Titles Only".
I have used Kinekt 2.1 (350 mm) on my full-power Vado since 21st of May 2020 with excellent results.
Suspension seat post - Kinekt
The odyssey of the Kinekt 2.1 seat-post ended on May 8th, 2020. The original seat-post sent by CirrusCycles from Bellingham WA on March 27th is probably still stuck in SF CA with the USPS... The CirrusCycles agent BikeShore sent me a replacement product on April 18th, 2020 from Switzerland by...
Now, I got a 450 mm Kinekt 2.1 from Specialized as a "warranty service gift" (to match a different size of a new Vado frame) and I could not be happier. It is the second best thing to having the rear suspension. You simply cannot feel the road bumps with your backside.
-------------------------
A rider's body exerts vertical force on the saddle. A simple suspension seat-post involves a spring that is located along the seat-post. Only a small part (vector) of the force exerted by the rider's body is translated into the angular movement of the spring. Therefore, the simple suspension seat-posts have never worked well.
There are three solutions that make the suspension seat-post work:
I have used both Kinekt 2.1 and RedShift ShockStop on two different e-bikes. The impression is you ride onto a speed-bump or into a pot-hole and your back feels nothing at all as it were anesthetised. (I have never used the Thudbuster LT).
- Cirrus Cycles Kinekt 2.1 uses a parallelogram system to extend/contract two springs under the saddle. The vertical body force is translated into the springs' damping action. Kinekt 2.1 is available in 27.2, 30.9, and 31.6 mm seat-tube size
- RedShift ShockStop uses a set of springs along the seat-post axis but the rider's vertical body movements are translated by a parallelogram system. This seat-post is only available in 27.2 mm size but shims can be used for seat-tubes of bigger diameter.
- CaneCreek Thudbuster LT uses a parallelogram for translating the rider's vertical body force, and it uses elastomer for damping the shock. This seat-post is available in 27.2, 30.9, and 31.6 mm seat-tube size.
I have tried two traditional suspension seat-posts on other e-bikes (ones with just a spring along the seat-post axis) and neither of them worked OK. Interestingly, one of those seat-posts had the "air spring" (similar to the rear suspension of MTB) and that did not work either, as the concept was just wrong.
6zfshdb
Well-Known Member
- Region
- USA
- City
- Northeast Pennsylvania
Welcome to the forum!
Excellent information by Stefan above! The only thing I can add is this: If you are considering one of these suspension posts, measure first. The Kinekt and Redshift require 3+ inches of seat rail to top of seat tube clearance. Due to it's longer travel, the Thudbuster LT requires almost 6".
I'm not sure about Europe but here in the US, all three of the above manufacturers offer a return policy if the product doesn't work out. Because of this, I actually ordered all three to compare and wound up keeping them all! I swap them for different types of riding on different surfaces. Personally, I find the Kinekt to work best on asphalt, the Redshift on moderately rough trails and the Thud LT to be best on very rough surfaces.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
An excellent piece of information, thank you!
ruffruff
Well-Known Member
As 6z....states, be sure you check your clearance before deciding on a suspension seatpost. I have the Kinekt and it requires 4" of room to install. I snuck mine in with just under 4" 3.75 to be exact, but anything less and it would have been a no go. Do your research and measure!
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