Prius 75-91mpg

[Nathan jones]

Originally Posted by mpg_numbers_guy

Have you noticed a measurable improvement from the dimpling?

I don't measure as such, regular driving variables do not permit this but the bonnet and bumper reduce net drag by .98%, 3.1% if all non-negative pressure areas were covered

[M_a_t_t]

Where do you get your carbon fibre from?

[Nathan jones]

Here in the uk, I use easycomposites, in bulk I find it's good value for money and they also stock the 200g glass in a cloth fabric where most just have woven roving

....a couple of very good results when computers were still in the car I found on my phone. I don't recall the driving enviroments, most likely extra urban and above mean 25c. They should thermally isolate the batteries in cold climates

next year I hope to make the undertray. The guy at the mot says I can't change the roof so I will make a dimpled skin for it and a cf rear hatch, aramid rear bumper and various brackets. I will also try structuring more and unidirectional carbon on unseen parts, it most likely will go round corners and hand lay easier. I found vacuum takes longer and goes wrong

And an aramid dash and door cards if there's time

[TexasCotton]

https://www.youtube.com/watch?v=qP16J-pFNlc

[TexasCotton]

https://www.youtube.com/watch?v=N5TD6wOOZa0

[Nathan jones]

Very good, except for the steel

[Nathan jones]

Have a great xmas everyone

Here is part of a tubular racking system made from aramid kevlar/carbon. Once cured it is very strong and light. I was planning a car respray next week but I will miss the roof and fabricate a multiple vortice skin (dimpled) for it. Early in the spring. Also next week the splitter will be cut off

[jakobnev]

Is this Brittish miles or English miles?



(I actually mean US or UK mpg)

[Nathan jones]

It is UK gallon measure, miles are the same. Making a 0w18 oil this week, I doubt the difference will be measureable

the car is much improved since then

[Nathan jones]

hey guys, (and gals if theres any cute ones). Just checking in, the buncemobile at the new digs and some tools I made from a new light material. It's similar to cf, slightly less flex modulus but lighter and higher mpa. I made a 1 inch square bracket for the bumper and it held in a flood. The oxalic acid helps ;0)

It's gonna get a proper respray in autumn and a dimpled roof then next year a flat floor and hopefully some cf and kevlar wheels. Will keep you posted you crazy cats!!