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Hahaha! Very keenly spotted! Yes, that's how my forum name came about! (I got it from a company I used to do Linux admin/dev work for a couple of decades ago)

It's hard to describe it, but it does take a while to really fine tune the fit. There is a certain sweet spot for the boom extension and cleat position that will allow you to really engage the quads. There is a technique and skill that takes time to master. Offcourse there is a limit to the...

$90 for science! :) Looking forward to your findings! Anyway, I had the privilege to compare 170mm vs 165mm becuase the Cruzbike S40 came with a 165mm SRAM Apex1 crank. Previously I had a homemade recumbent (cruzbike copy) with 170mm cranks. First impression, was my average cadence went up...

Interesting discussion. I have also been curious and have done some bit of reasearch. One thing is clear though, most formulas on crank length are intended for upright bicycles. They tend to yield slightly longer cranks than recumbent specific cranklength calculators. Here is one specifically...

There are thru axle to QR adapters. Like these : https://www.aliexpress.com/item/1005006254265932.html

No, but maybe one day.

We are used to it. Our reflexes and awareness has been sharpened. However that was a major highway. A very busy one. We also have some minor roads that are a bit more deserted and not as bad.

Those would work best if you change your handlebar to flared dropbars like these: https://www.aliexpress.com/item/1005005594611843.html The flare helps to avoid hitting your knees when shifting gears. 440mm or 460 would work.

Yes, under certian conditions: 1. Wet surfaces/loose surfaces (especially without sufficient momentum) 2. Sudden increase in torque 3. hill starts especially starting on super low gear I find riding the S40 from 13-15% (and above) likely to create lose of traction. At these steep grades it...

To add to what Larry said, I came across the online calculator below, though Iam yet to try anything shorter than 165mm (which came with my S40). Iam currently using 170mm cranks becuase I got a crank based powermeter on it. http://www.recumbents.com/wisil/misc/crank_angle.asp

If you like climbing steep grades and would like to use the 1x drivetrains then, I suggest atleast a 1:1 gear ratio at the lower end or even less. The reason is that there is no "off saddling" on a recumbent. You can "bridge" for a short time(5 - 10 seconds) but extended climbs need a good low...

145mm? Great! I've only seen 140mm, 150mm, 155mm, 160mm on aliexpress. I had not seen 145mm though. It would be nice to include the aliexpress link.

What's your inseam? Just curious.

How well does it climb steep hills compared to your 170mm? Did you need an adaption period. If you had comparative power numbers, that would also be very informative.

Thanks. I could'nt quite figure which of the listed apps matching that name actually takes into account the crank length. :rolleyes: However , I found out that the good old Sheldon Brown's Bicycle Gear Caclulator has it all! :cool:. https://www.sheldonbrown.com/gear-calc.html Gain Ratios is...

Thanks for the link! Great info there!

I think, if the leg speed remains the same, then the shorter the crank the higher the cadence. So, to compensate for the increased cadence, for the same power, the chainring has to get smaller. But it is not clear by how much. (Probably there is a good gear calculator online that we need to...

Is there an adaptation period? When I first moved from 170mm cranks to just 165mm(stock S40 cranks), it felt a bit harder to push (naturally becuase the leverage is reduced) but it took a while to get used to it. Climbing did not improve, despite the noticeable increased cadence (that new...

I prefer MTB SPD (two bolt cleats) becuase I can move them further back easily to my midfoot by custom drilling my shoes. I had road cleats (3-bolt plastic cleats) in the past but they are difficult to customize for midfoot and they wear out much faster. However they were much wider and which...

I occasionally get on my DF for a change. The power translates quite closely to my S40 but is a touch higher on the DF. I noted the following: 1. The DF is noticeably lighter than my S40 ( by more than 3.5Kg). It is therefore more responsive to accelerations. 2. I climb faster on the DF ...