Probably the best cycling app there is to see how weight/dynamics affects your performance,spend 30minutes comparing different things there and you will come to revelation...
In short, save your pennies it's all damn marketing hype/tricks..You can't really re-invent a bicycle (unless its an e-bike
)-Want to go fast?
Get in a good aero position to achieve the least surface contact area,
after you go past 15km/h it's all about aero (Mostly Aero OF YOU (~80%) , not the bike(~20%)
Under 15km/h it's all about the tyres you have, so the only thing you should invest in is a good set of tyres with good rolling resistance,
you can find info about most of the tyres here with all data: https://www.bicyclerollingresistance.com
-Wear good fitting clothes( don't need any special stuff) , loose some weight of yourself( less aero drag), and you will be just as fast on a cheap $50 Used 15kg mtb with NICE tyres ( Yes,just the tyres not some expensive Rims) than someone on a 7kg $5k bike wearing ridiculous outfit - as long as you have the same Aero Drag and aren't going up-hills.
-Going up-hills? Again a heavy MTB with GOOD tyres + Taking a poop before you set off will give almost the same results (2-3% difference) The weight of your bike/kit ONLY matters when you go up a hill (barely), in straights- almost 0 difference.
-Still Getting anxious about the weight of your bike/kit? It's not actually the weight of the bike.. It's The Weight of YOU+ the Bike, count those 2 together and you will realise that Just taking a poop or eating 2 less Doughnuts before you get on a bike is a much better strategy than spending money to reduce the weight of the bike.
*Does not applies to Pro-Racers which you see on TV (maybe 0.001% of all cyclists? ), the kit actually gives an edge over others (2-5% gain ,perhaps in most cases?)
So Unless you are one of those, Just Play around with your Data and see for yourself that it's all pointless.
Just go out and Enjoy cycling.
