No.4- generational change not just a step up

[Don1]

Ok, I am happy with the sketches for No.4, now the hard work of making a 3d model. any feedback welcome.

I have looked at so many TT split forks, I think this one will be the strongest and most versatile. model will have "hidden" front derailleur, 2x12 speed(50/34, 11/34), 4 pot brakes (hybrid cable/hydraulic 180/160mm) post mount ( I think I can make them more aero than flat mount, race case is integral and all hoses integrated (brakes, shifting, hydration) multiple locations for day running lights/cameras.

To build it.... construction of a voron 2.4 architecture 3d printer will begin in ernest once I pin down build of materials... build volume of 1190x500x500 (chamber temperature 80 degrees and nozzle temp 350degrees, dual extruders (1.0mm) using different support material) Construction will be from carbon fibre poly carbonate filament (PVA supports) Nearly as strong as AL but half the weight. Once I have finished the 3d model I will have a fare idea of weight etc. then learn how to do CFD and stress analysis simulations but might be more fun to print and test it old school by jumping on it......

 

[Frito Bandito]

That looks georgously slick Don. Can I pre-order 1 with a 25* seat angle and a 55t? I am just beginning to top out my 52/11 on downwind stretches, and that looks like I would definitely need the 55.

Correct me if I am wrong, but is that a splitter behind the race case? How about being able to fill the race case with up to 2 liters of hydration and have a bitedown tube coming out of either side of the bottom front where seat stays meet it?

Some people like tiller steering, but I haven't gotten used to it even when just trying to hold the insides of my bullhorns, so an option to have an aero bar like a Deda Tribar with handles that are angled at about 40*-45* would be perfect for me. I actually have one of these on my DF bike with bar end brake levers, but angling the handles up to where it is comfortable would increase the drag from the base bar on my V20. Basically it is aero when mounted flat only. With TT brake levers and electronic shifting it would be tons better than my round tubed bullhorns.


Another thing I would like is to be able to mount my cycling computer (currently Wahoo Bolt) on the frame just under the bars to get it out of the wind.

 

[Don1]

Yes. There will be internal routing for hydration that will basically come out of the edge of the seat under the armpit on each side. Handle bar detail not yet done but will have a middle removable section that can secure a Garmin/wahoo under a aero wedge. Since I don't have to be confined by traditional bars, it will be aero, sweeping around knee clearence, and molded around the brifter hand wrist combo as one component.

 

[Frito Bandito]

That is awesome. Glad to hear of the IR hydration. I am not sure of the cons of this next idea just yet, but it sure seems convenient to have a connector for the hose such as the kind used for air compressors and tools or Push-In fittings.

)

I already clean my wheels at least before bringing my bike inside, but I surely wouldn't mind squirting the inside of it down with soapy water as needed and having a drain hole. It would probably be less time consuming than washing three 750ml (24fl oz) water bottles and make cleaning the hose more simple.


A decent sized rubber stopper on the top to be able to refill quickly would never rattle and it would be durable.

I can't wait to see all of those things as you get them done.

 

[Don1]

Hmmm . I'd be putting in a bladder and tubing that could be removed for washing........ I had a mild thought about having a compresed air chamber to refill tyres but nah.

 

[Frito Bandito]

The bladder is a good idea. I was just thinking to dump the hydration in, and then being able to connect the hose externally with either the Push-In fitting or the air hose connector being the connecting point.

 

[bladderhead]

Where is my license fee?

 

[Don1]

Currently vapourware.....

 

[DavidCH]

Ok, I am happy with the sketches for No.4, now the hard work of making a 3d model. any feedback welcome.

I have looked at so many TT split forks, I think this one will be the strongest and most versatile. model will have "hidden" front derailleur, 2x12 speed(50/34, 11/34), 4 pot brakes (hybrid cable/hydraulic 180/160mm) post mount ( I think I can make them more aero than flat mount, race case is integral and all hoses integrated (brakes, shifting, hydration) multiple locations for day running lights/cameras.

To build it.... construction of a voron 2.4 architecture 3d printer will begin in ernest once I pin down build of materials... build volume of 1190x500x500 (chamber temperature 80 degrees and nozzle temp 350degrees, dual extruders (1.0mm) using different support material) Construction will be from carbon fibre poly carbonate filament (PVA supports) Nearly as strong as AL but half the weight. Once I have finished the 3d model I will have a fare idea of weight etc. then learn how to do CFD and stress analysis simulations but might be more fun to print and test it old school by jumping on it......View attachment 11256

Looks fast. You can save more watts by covering more with the wheel hoods. Probably 20 watts saved. I was impressed with a product that was called aerofender
https://thegadgetflow.com/portfolio/bike-wheel-fairings/

 

[DavidCH]

I would say the downtube is a bit fixed straight and level. Some riders would prefer more slope in order to get up bigger slopes. Not sure if you can make it more flexible? Removable front forks and removable rear forks that have attached fenders come to mind. It would make it so easy to pack and carry.