Would be good to see a 26mm corsa pro speed vs 28. Maybe even 24mm as well depending on the wheel internal width.
Same for the Conti tt… 25mm vs 28mm.
Last September I did test the two contis at Silverstone but each was one a wheel optimized for that tire. 25 won. But that was purely aero, no RR
Could you share what wheels or what were the internal widths?
My current hypothesis is that 21mm internal width wheels are optimized for 24-25mm tires. And 23-25mm internal width wheels are optimized for 28mm.
Just talking crr, when you optimize for a given road (28mm will have lower pressure than the 25), the rolling resistance is roughly the same between a 25 and 28. That is as long you don’t have any pressure limitations.
Any chance you are testing the Black Bibs TT suit? I know it’s all super individual, but, for $150 it looks like some “cheap” speed for my monthly series.
21mm internal and 23mm internal.
the bigger question is if the 28mm on the 23mm inner actually provides better RR and if so, on what kind of surface. I had previously road tested RR on good roads and optimal pressure on each did not provide overall improved performance.
No it is not Black Bibs. In other threads, Jeroen (@anon62099856) spoke about some clothing he had been sourcing so he sent me a bunch of suits. He had some suits with very specific fit characteristics like big shoulder/small waist that my test subject was looking for. I am not sure to what extent he wants to reveal details, so he can chime in.
That’s a great setup. I’m looking at a P-Series now as well and was going to set it up with that same cockpit. I just ordered the base bar and torn between the 52 ASC extensions and the Pro. Are you running Sram or Shimano? I plan to use Shimano and want to completely hide the cables, is that possible?
I am coming off a new Speed Concept that I just can’t get feeling good on. Had a P5 before that which was good but I prefer the cockpit freedom of the P-Series and I think I can build a much comfier bike than the SC which for me will be faster!
I will know better next weekend with the 2 bikes side by side. My early assessmet is the 52ASC will allow for more adjustment. I am struggling to find a BTA solution for the Pro. I have a funny feeling I will end with the Pro and he will take the 52ASC.
Sram. I haven’t put the Ultimate on yet. I want 2 races with previous cockpit in the books. I am wondering about rear brake cable, worst case it will be slightly visible.
I am looking forward to have the 2 bikes side by side, all the bits and pieces (on order)
The P Series currently has the Aeria basebar and ASC43 extensions. i did benchmark this against a bike 3x it’s price and it was a tie, although it’s almost impossible to get both bikes identical. Fit was identical.
99.9% all cable will be hidden
At the bottom of the pick you see the rear cable exit my old bar and re-enter the frame
At the top is the new bar. The cable will come out from that cavity and go straight down into the frame.
Blip box will go
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blip box can fit inside the new bar, although I’m not sure whether the AXS cables can make it from the riser into the bar, the plugs are quite long.
I was going to go with the entire wireless blips
I always meant to 3dprint a little blip box holder attached to the bridge
this is going to be friggin awesome. No more stem, no more cables…0.165, here I come
0.165 - do you even need to pedal??
Just get a nice shifter mount from LEAP instead of strapping it to the side of the extension (or print your own)
Their basebar one is pretty nice too
This is brilliant! I have long preferred Shimano on my TT bike because I hated the clunky blips on the base bar. But that grip simulates good integration. I also love Shimano’s automatic FD shifting for TT, which SRAM now does. I will highly consider SRAM for my next TT bike.
Leap make SRAM far more appealing on the bars
Good to have agile companies making solutions
Have you considered throwing a better cockpit on your Speed Concept? It works great with the TR alpha one and even better with the new Alpha prime. Definitely the optimal speed concept setup.
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It’s funny because me it’s all about CDA, micro watt savings…I am a weenie.
My buddy it’s comfort, staying cool (he overheats easily), smooth ride on brutal roads (IM Canada). But he is happy to save the 15-20 watts while meeting his criteria.
One reason I am happy we will both end up on PD is I know the extent they safety check them. Based on recent data on this, I think we sometimes neglect this. We need more visibility on this.
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That’s great. Thanks for all the info! I think the Pro extensions would allow me to run the cables down through the base of the pads and then internally but like you, I’d have an issue fitting a BTA I think.
A BTA solution for the Pro extensions is apparently on the way.
The Tririg adapter we bought would not fit.
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Hi, yes I looked at that option as well and had everything picked out (I already use the full TriRig BTA elevator and cages so it would have been a clean setup) but in the end realized I just don’t love the bike!
Why not replace the wired blips to the wireless blips, a small investment and no wire hassle any more and no blip box. Was the wired stuff default on the Ventum?
Jeroen
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