s40 gen 6
- Thread starter Damien
- Start date
LarryOz
Cruzeum Curator & Sigma Wrangler
Front end and seat angle look the same - I doubt those areas changed. My guess is that the components are back to SRAM from Microshift is going to be the main change we see - I am hoping for 145mm cranks, but I doubt they won't show up for at least another year
Damien
Member
Yeah, I hate microshit components. I will upgrade my s40 to Shimano asap.
I wish to have s40c (carbon version) of s40. Ideally full carbon not only partly like v20c.
LarryOz
Cruzeum Curator & Sigma Wrangler
A full carbon frame for the S40 (or any model) would probably be heavier that the aluminum hydroformed frame - it is extremely light and strong. I have "Magic" which is 100% carbon - and it is 5 lbs heavier than the V20C.
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Flying Dutchman
Well-Known Member
yes there seems to be consensus that the Silvio with around 30 degrees is like a 'Goldilocks' seat angle. Having a model that can convert between 30 and 40 degrees would be great.
Extremely light is not what springs to mind. Among the heaviest recumbents I have owned.
I suspect that a well-designed carbon frame for a Cruzbike would be lighter. It could also be more compliant and comfortable as well as stiff where needed. The trick I believe is the cost to engineer develop, test and make it. With a claimed weight of 3.7 lbs. for the actual frame and 12.14 lbs. for the frame set, I do not think that a minimal weight saving on a carbon frame will make the bike too much lighter. Given the already costly frame kit I am not sure any of us would be willing to pay the price for the weight saving.
I did notice that Slyway claim ~9.5 lbs. for their frame set, though not sure what is included or the weight of a competed bike.
Just for fun I looked up the frame weight for a Trek Domane Carbon frame and it is ~3 lbs. and the complete bike was 19.4 lbs. I am currently building a V20 c and if I take the frame set at 12.14 lbs. and add component weights, I come out around 23-24 lbs. I have been impressed with the weight of the front-end components compared to my Q45.
More details coming but no "major" changes here as far as frame/geometry are concerned. SRAM components and TRP brakes are ones that I had on order since mid-covid and they finally arrived and have been waiting for this batch. That alone makes this a much sweeter ride. The colors are SWEET and our painter did a great job - maybe the best yet. A few small changes but it is hard to tweak something this good.
As has been mentioned - it is near impossible to make the frame in all-carbon from a manufacture/cost standpoint and have it be lighter than it already is. If it were the same weight, the rider weight would be capped at like 110 lbs.... so hycroformed aluminum for the win as always. This is something I investigated even before we built the first S40 homebuilt prototype. For a home build it might be able to be light - but would then also be flexy and able to carry zero weight. The carbon manufacturers don't mess around with the specs on things they feel is too light and flexy.
Also, I have held a SlyWay frame in my hands and it is not light.
As has been mentioned - it is near impossible to make the frame in all-carbon from a manufacture/cost standpoint and have it be lighter than it already is. If it were the same weight, the rider weight would be capped at like 110 lbs.... so hycroformed aluminum for the win as always. This is something I investigated even before we built the first S40 homebuilt prototype. For a home build it might be able to be light - but would then also be flexy and able to carry zero weight. The carbon manufacturers don't mess around with the specs on things they feel is too light and flexy.
Also, I have held a SlyWay frame in my hands and it is not light.
