Turbofans I've made for a friend.
Posted by TurboDiesel33@reddit | projectcar | View on Reddit | 101 comments
The disc is C.F. , the blades ate aluminium and glued in place with PU structural adhesive, as well as riveted with alu rivets. Each weights about 650g.
unwanted_zombie@reddit
I love these and they look badass, but I cant help but think of slab cars from Houston when I see how far they come out lol. Has there been a noticeable increase in braking performance- or at least longevity?
Correct-Ad-6605@reddit
Had any issues with centrifugal force destroying them? I've had some lug nut mounted versions explode on me before. Similar design to yours but mounted via lugs. with a filled in center piece. Your mounting seems a better option to spread load.
TurboDiesel33@reddit (OP)
Nope. But they register inside the wheel. This takes some off the radial component.
At 130kph the force is about 30N iirc.
On the ones I will make for the bmw since they don't register into the wheel, I will extend the blade and rivet it to the cone as well to remove the bending moment.
And yes I bolted it to the wheel directly, it's a PITA to remove the wheel when attached fo lugnuts. Too much work
Rubbertutti@reddit
I would have made them half hight
TurboDiesel33@reddit (OP)
They're for the 205 they're buried about. 12 15mm in the wheel. We tried them on the e36bjust for kicks. We will make a pair with smaller blades.
JDDDouble@reddit
How very M5 of you.
pancrudo@reddit
Because of the e34?
JDDDouble@reddit
Yeah, the Turbines are classic.
pancrudo@reddit
My brain assumed they were a 36 wheel because of how common thats probably where most of the collection of those wheels are.
I favor 21s over 20s, but really the wheel without a face is really fucking cool and my favorite of the options
Little_Passenger_892@reddit
Do they make wind noise at higher speeds?
UnlikelyCalendar6227@reddit
I hope they whistle
Little_Passenger_892@reddit
I think OP invented the next step towards flying cars.
TurboDiesel33@reddit (OP)
That is tomorrow's surprise for us 🤣
prairie-man@reddit
fwiw - The BMW E34 M5 had wheels with directional fans. https://www.pinterest.com/pin/17732992275212397/
TurboDiesel33@reddit (OP)
I love these wheels ! But without the fans they look so good
prairie-man@reddit
the fans are secured to the backside of the silver wheel covers and are hidden from view. https://i.pinimg.com/originals/aa/ed/03/aaed03183c41da543f6af25d9e7a8c8c.jpg
vcdrny@reddit
Nice, but I always wondered. Aren't the fins supposed to be at a certain angle to move air out from under the car. Doing two functions 1st moving more air around the brakes and creating a low pressure area under the car creating more down force.
TurboDiesel33@reddit (OP)
Lancia made them collinear with the radius, so did BBS, I think they really just function like a centrifugal fan, they don't spin very fast perhaps like 800rpm at 130kph, but the diameter is enough to have high tangential velocity at the blade tips.
I guess one could play with angles, leading or trailing to increase where in rpm it works best. It's a sad thing they are forbidden in most motorsport classes nowadays ☹️
vcdrny@reddit
I wonder because I think it was the Mercedes Benz McLaren McLaren SLR wheels where designed to push air out from underneath the car. Inspired by turbo wheels. And you can see how aggressive the angle on those are.
The fins being straight would push air in not out. Because during motion they are already being hit with air being speed up as it moves around the car's body. I'm trying to imagine the dinamics of how the air would react to it. I'm no fluid dynamic expert, at all. As for them being forbidden is probably because it gave some type of advantage.
Don't remember where and when this was done. But the SLR was in a high speed competition. After putting aftermarket wheels it was able to achieve a higher top speed. The wheels where so efficient at increasing the car grip. That in a straight line, it made it slower.
TurboDiesel33@reddit (OP)
It's possible these only work on the face not seeing incoming air, one would have to calculate the radial component of air in the fan, vs the velocity of the car. Probably depends on Tyre to fan diameter ratio, blade sweep/ angle. Etc.
Someone kindly proposed to do a CFD analysis I will send him the file when I'm home, this will be interesting !
It is true that on high speed cars, like the 956 / 962 etc, the fins were tucked inside the wheel probably to lower the negative effect of incoming air.
I did them the same they were on rally Lancia's in the 80s, that was the style we were shooting for. Well not 100% copying the dimensions, it's adjusted to our needs and all, but structurally and design wise its very close. So if they did work back then, these should as well.
I agree they must work.
There was a video of K.B.43 doing donuts in his Ford, he had turbofans on the front wheels it was so cool, you could see the smoke being pulled out of the wheel make a toroidal shape around it !!
vcdrny@reddit
Oh I gotta find that video. And I if you do get the results of the test, please post them. I'm curious as to what the results would be.
TurboDiesel33@reddit (OP)
https://wallpaperaccess.com/full/1390635.jpg
It was a photo my bad
firmly_confused@reddit
did you have to balance them? Or is it one of those "lets see what the tire balancer says" type of deal?
TurboDiesel33@reddit (OP)
Yes came put at 5 grams off
Think-Stuff2011@reddit
This guy balances.
Steelhorse91@reddit
This guy this guys
McWooody@reddit
Guys, this balances
Peribangbang@reddit
Not bad at all actually
Psych0matt@reddit
What do these do?
TurboDiesel33@reddit (OP)
Here's the little story behind these :
Lancia ( as well as other teams ) used them in Rally. They act like a centrifugal fan and pull air thru the wheel and helps cool the brakes, some say they also pull a slight vacuum under the car and create downforce on tight ground clearance race cars , like the Porsche 956 / 962s.
Don Nichols and Trevor Harris were the 1st to try it on the AVS Shadow, using Corvair fans inside the wheels if I'm not mistaken.
fuckofakaboom@reddit
So are you running these front wheels only? It looks like tossed gravel would quickly destroy these.
TurboDiesel33@reddit (OP)
Front only yes. We will see how the epoxy holds up. If it chips we will try a more flexible kind and perhaps make them out of hybrid aramid/cf
CartographerActual37@reddit
How does it cool the brakes on the red car? There are no spokes or gaps where it would pull any air to the callipers...
TurboDorito@reddit
The wheels have holes in, you can see a couple in the last picture.
TJNel@reddit
It's a standard steel wheel so yes it has some but in the outside edge and away from the rotor that would need to cool. Also only effective for racing where you are on your brakes constantly like rally.
Pretty pointless and another way to slow your car down in every other type of driving.
TurboDiesel33@reddit (OP)
The holes in the steels
Skycomett@reddit
Lmao, exactly. Maybe a test fit?
Psych0matt@reddit
I assumed it had something to do with brake cooling, I wanted to see if I was right. Neat, thanks!
Ebola714@reddit
Yes. Pls explain.
ozzy_thedog@reddit
Here is a good explanation
YousureWannaknow@reddit
Ok, ok... Ain't it authorities's attention dragger?
TurboDiesel33@reddit (OP)
We will see how they like them 🤣 especially where I live...
YousureWannaknow@reddit
Now you got my attention 😅
Cop country as I do?
TurboDiesel33@reddit (OP)
France, the place of forbidden things 🤣🤣🤣
YousureWannaknow@reddit
Ain't that country that used acrylic glue on wheel cuff locks to make them impossible to take off without damaging them? 😅
Steelhorse91@reddit
Any before/afters on brake temps or are they purely there to look sick?
TurboDiesel33@reddit (OP)
Purely for style. But we will see how it affects brake fade when we make a 2nd pair ( a bit less wide ) for the 36 !
attilafdr@reddit
Did you do a vibration fatigue analysis? Right...? You did it, right...?
If you haven't and just winged the design I pray that when one of the blades eventually comes loose it won't hit and kill a pedestrian, cyclist or motorcyclist.
TurboDiesel33@reddit (OP)
I didn't. Maybe they will maybe they won't, we will check them periodically. They're bonded on not only riveted. So many exciting frequencies could happen here I doubt it could be accurately predicted
IBIKEONSIDEWALKS@reddit
You have more deets on the e36 that requires fan blades? Unless just for style, looks crazy anyway nice work!!
TurboDiesel33@reddit (OP)
It's a compact e36, with a 325tds engine in it and makes about 200/220hp . For looks mostly but it may help with brake fade
mrsirawesome@reddit
Well, he IS speed.
AndByMeIMeanFlexxo@reddit
S I C K !
MyNamesMikeD75@reddit
Pretty cool, does he race?
TurboDiesel33@reddit (OP)
Nope, we did them for looks mostly.
obiwanmoloney@reddit
I respect the honesty
The stripe decals on my car do make it quicker though, cos aerodynamics. Fact.
__slamallama__@reddit
What a substantial bummer lol cool project though
Worst-Lobster@reddit
What is the point besides the look ? Is it do something else ?
LiquidAggression@reddit
this is so dumb please post a video of the swirlies in the tiresmoke. the monkey brain is activated
EstablishmentFine368@reddit
Not bad at all 👌
Friendly_Escape_1020@reddit
Seems like they would increase drag and lower fuel economy.
MikeLamidya@reddit
Yes, vortex generators essentially
TurboDiesel33@reddit (OP)
They probably do yes
derek4206@reddit
That red car has lawnmower tires on it🧐🤔
manualsquid@reddit
Or does your lawnmower have rally car tires on it??
TurboDiesel33@reddit (OP)
They're Jimny sized about. This is a 205, originals are like 165/65r13 now 195/70r15
comoestasmiyamo@reddit
Rusteze is an appropriate sponsor for a Peugeot.
derek4206@reddit
Yea just the tread pattern looks exactly like the turf tires on riding mowers lol
TurboDiesel33@reddit (OP)
It does indeed 🤣
buckyworld@reddit
Snow tires are supposed to be skinny. I run 195s on my S2000 in winter.
commieconservativ@reddit
If you mount them the other way does it blow the leaves out the sidewalk gutter?
SolarE46@reddit
Are those solid wheels?
TurboDiesel33@reddit (OP)
No just standard steels, forma peugeot 406 I think
GZEUS9@reddit
TwoDudesAtPPC@reddit
These are so hot. Best photos of today. Thank you
TurboDiesel33@reddit (OP)
Thanks 😃
AnalDestroyer69@reddit
What car is the Lightning McQueen?
TurboDiesel33@reddit (OP)
Peugeot 205 with a Dimma T16 kit on it
FantasticSeaweed9226@reddit
Looks a little out of place on that particular car but cool nonetheless
wewantchilliwilli@reddit
Thought you were talking about the red lightning McQueen offroadhatchback at first and was gonna argue that they look pimpin on that thing haha, I imagine that thing is a blast
DiscoCombobulator@reddit
Well, now you have to put a set on some awd beater car, and try a water crossing with your new paddleboat wheels lol.
For real theyre sick though
Entire-Extreme7327@reddit
What have you come up with to hold these in place?
TurboDiesel33@reddit (OP)
4 small steel pillars, M6 screwed into the wheel
Entire-Extreme7327@reddit
Oh, I see the 4 now. Better to be secure than sending that thing spinning down the highway. Drilling and tapping into the wheel, dang . . . that’s dedication.
TurboDiesel33@reddit (OP)
Yes a guy I know that makes CF parts used to make these as 1 piece units. He told us one blew up once ( due to the hoop stress, due to centrifugal force ) it shattered and a piece ended up stuck deep in a tree, he makes them with separate blades now.
JDMBabaganoosh@reddit
Hi, it's me, your friend
Ok_Newspaper5753@reddit
TurboDiesel33@reddit (OP)
gbeegz@reddit
Scamalama@reddit
Is this for brake cooling? I don’t get it
TurboDiesel33@reddit (OP)
Originally yes. We did them for looks mostly. Still functional though, hopefully
Suicyco71@reddit
Sweet, definitely brought something new to wheel stying. If possible, you might want to patent it or something to protect your design.
TurboDiesel33@reddit (OP)
Oh, I'm just a coycat... Lancia did it when I wasn't even born yet 🤣
sorestgore@reddit
Elite knowledge
Suicyco71@reddit
Oh crap, well good work anyway.
TurboDiesel33@reddit (OP)
Thanks 😃
CanoegunGoeff@reddit
These look awesome.
I really want to make some of these for my own cars but idk how to even go about it. I assume it would be best to make the parts on a CNC, but I don’t have access to anything like that.
TurboDiesel33@reddit (OP)
Done it all by hand and I can tell you cutting, drilling and bending the 32 blades was a major PiTA... no dril press and no press brake 😅and no shear as well...
gunsdrugsreddit@reddit
This makes it even more impressive that you were only out-of-balance by 5 grams 😅
CanoegunGoeff@reddit
Well shit, maybe I’ll just try my hand at it after all then, and see what I can come up with lol. I do have cutters and grinders and some scrap sheet metal around.
You did a great job, they look of properly manufactured quality from these photos.
TurboDiesel33@reddit (OP)
Thanks. There are defects and voids if you zoom 🤣🤣 I'm a " metal guy" this was my 1st go at making CF parts, we'll actually 2nd, 1st try was a failure but makes cool wall art 🤣