2 ай бұрын
Пікірлер
@BigMilan 3 күн бұрын
at 2 minutes i think you made a mistake and mixed up the two conditions
@Surestick88 5 күн бұрын
I wonder if a multi-element canard might not function better at a high angle of attack?
@sofaking9404 5 күн бұрын
What suspension are you running on it?
@waylon200 5 күн бұрын
🙃 Promo`SM
@EngineeringSiblings 7 күн бұрын
I believe your issue was the holes behind the bolt heads. The bolt heads created a low pressure zone creating suction from those holes and venting in a lot f air. if holes were closed, the flow would most likely re-attach back to the diffusor. And if it was only the holes alone, they would have been only a disturbance. the bolt heads made them effective at letting in the air.
@rcoltlyf 7 күн бұрын
I like your thoughts.
@jimastra8488 8 күн бұрын
Lower side skirts would be more effective.
@rcoltlyf 7 күн бұрын
Yes they would. But not so good for driving around town which also has to happen.
@g45h96 14 күн бұрын
Why have I never seen that method of airflow testing without computer software before?? Takes a few people, but that's amazing.
@sporkybutterz 15 күн бұрын
Have you tried front wheel aero discs only since most of the losses occur at the front? More out of curiosity than anything
@rcoltlyf 14 күн бұрын
Good point, but brake cooling was such an issue for a long time that improving aero is not worth sacrificing actually being able to stop reliably.
@sporkybutterz 14 күн бұрын
@@rcoltlyf Absolutely valid point... being able to stop barreling down the track is critical. It may be more work than it's worth but I was referring to the 80s style Porsche lemans approach. The discs would have vents plus flex ducts for brake cooling but that's a more involved endeavor. Aero unfortunately is about compromises
@rcoltlyf 14 күн бұрын
@@sporkybutterz Probably beyond my usual budget lol.
@ratgreen 16 күн бұрын
I will literally not install a part with perforated sheet made gaskets, as its such a terrible material, it just doesnt last and compresses too easily, I learned the hard way that they suck. Always go MLS.
@driftmonkey3646 16 күн бұрын
Here’s to you, unsung hero’s of KZfaq! This is the content we need, short and simple, showing something that might not be the same vehicle that you own but a transferable technique with explanations. Thank you 👌
@rcoltlyf 16 күн бұрын
You are way too kind.
@driftmonkey3646 14 күн бұрын
@@rcoltlyf you need to do another tech type series
@rcoltlyf 14 күн бұрын
@@driftmonkey3646 I do. However the RColt is off getting a new engine. I have a couple of things in the library I can drag out and was thinking about looking at the aero on the CZC. Will see how things pan out.
@rvs55 17 күн бұрын
You'd be surprised how using chrome polish and a cloth towel can clean up yellowed polycarbonate. Then you can follow it up with some car polish and then wax to smoothen things out.
@rcoltlyf 17 күн бұрын
I have no doubt they will fade again at some point so can give it a go then.
@rvs55 17 күн бұрын
@@rcoltlyf Yeah. Give it a go. Good luck!
@cholo6531 19 күн бұрын
Will you track this one?
@rcoltlyf 19 күн бұрын
Not the plan at this stage but I can't rule it out at some point. The longer I own it the more likely it would be.
@Eduardo_Espinoza 22 күн бұрын
I was thinking of making it aero shaped a long time ago too. :)
@Eduardo_Espinoza 22 күн бұрын
I think the height of the detectors matters on the car, so the tire air exposure varies.
@tturi2 23 күн бұрын
hey do you have a video on the construction of your undertray? I want to build one for my car (ford)
@rcoltlyf 17 күн бұрын
Nah. I have a few photos on how I go there but no actual video footage. I may turn the photos into a video at some point. Thanks for the idea.
@tturi2 17 күн бұрын
@@rcoltlyf yeah bc I have a few ideas to mount it correctly, I'm just worried about drilling into my floor and causing water ingress lol
@rcoltlyf 17 күн бұрын
@@tturi2 That much I can answer. The colt has a series of holes in the chassis rails already that I used as mounting points. I just had to sort out a way to use these.
@Chubby_Lemon 23 күн бұрын
jesus... just talk man, i ain readin all that if i wanted to read about aerodynamics i'd pick up a study paper on it
@rcoltlyf 23 күн бұрын
Lol. You haven't heard me speak. 😉
@alexmat106 23 күн бұрын
I know this has been posted 3 years ago, but have you thought about a transverse recess, perpendicular to the flow? It should reduce some of the boundary layer thickness and it could house the bolts and holes without interrupting the flow
@rcoltlyf 23 күн бұрын
I had not thought of that. I like your thought.
@saabaero6211 24 күн бұрын
Hi noob Question is the brake pedal use all 4 wheels brakes > or only the front ?
@rcoltlyf 24 күн бұрын
All 4 wheels, but the reality it the fronts do most of the work. To get the back brakes working you need them to be high friction from low temperatures.
@emrage 27 күн бұрын
Amazing work thank you
@mdfaruq5800 27 күн бұрын
Hope to see your build soon..nice videos... I'm planning to get one..but the price is high for now.. probably next year I'll do it for the right price and if budget permits
@user-ci4tt7wt1d Ай бұрын
Hey you're making me feel guilty I treat my car with loving care
@user-ci4tt7wt1d Ай бұрын
Now wait my car has dings and I love her to death
@guitarman376 Ай бұрын
I enjoyed your video and like how you showed the evolution of the final product. Can you explain how you decided on the final design vs one or 2 of the other designs? One day I would really like to do something like this.
@rcoltlyf Ай бұрын
As much as I would like to say cold hard testing, mostly it is a combination of aero articles and papers that I have read (and then get new ideas from) as well as more practical things (like making them too big then snapping them off on speed bumps which has happened more than once). I can say that I have done these again and they are smaller this time.
@AnsonSuperSports Ай бұрын
You can bend out the scuff shims to fit a bit tighter
@rcoltlyf Ай бұрын
No shims. But I have thought of making some.
@AnsonSuperSports Ай бұрын
@@rcoltlyf not shims but the stainless hardware on the side of your calipers where the weld you added would contact the pad you could bend them a bit
@rcoltlyf Ай бұрын
@@AnsonSuperSports Pretty sure there is not hardware there - just the meat of the caliper itself.
@outcastgames4040 Ай бұрын
Should add some spacers to widen the stance abit. Overall, Amazing job and congrats. (Add a bigger turbo and oil cooler)
@rcoltlyf Ай бұрын
No. Cheers. No. Maybe. :)
@Tronatra Ай бұрын
Interesting stuff, love all the aero stuff you do
@roshanchitan1997 Ай бұрын
I'm looking for a a/c condensor. European colt's seem to have a different line routing compared to the japanese ones
@rcoltlyf Ай бұрын
Not sure I can help with that. Sorry.
@836dmar Ай бұрын
Would tuft testing show a flow improvement at the wheel arches? Might be neat to mount a go pro and test the effect at the under plate.
@rcoltlyf Ай бұрын
Dunno but good thought. Part of the issue is the challenge in mounting the camera in a way that does not affect the air flow. Really need a wind tunnel!
@Charlie1012000 Ай бұрын
the music, fucking annoying music made me cut this informative video short!
@captaincurd2681 Ай бұрын
Hi, was just wondering how the flat floor goes around the rear torsion beam.
@rcoltlyf Ай бұрын
There is a drop frame lower than the torsion beam from where the fuel tank bolts in, then it curves up from there (diffuser) and attaches to the bumper. The rear torsion beam moves within this space - it was installed with the torsion beam hanging with the car on a hoist to make sure it would not hit when fully dropped
@waqaarosman2327 2 ай бұрын
Hi, do you run a baffled oil sum pan?
@rcoltlyf 2 ай бұрын
Nope.
@MRworldEtIkA 2 ай бұрын
cow
@Eduardo_Espinoza 21 күн бұрын
Moo get outta whey
@flavioschrenk2425 2 ай бұрын
all the best bro. i've liked your vids very much
@rcoltlyf 2 ай бұрын
Cheers.
@lilwicky1819 2 ай бұрын
swap a 1jz
@rcoltlyf 2 ай бұрын
LOL. May blow the budget, if it could fit.
@abomala1607 2 ай бұрын
didn t know such car existed !
@L3XURIOUS 2 ай бұрын
You should try ceracoat on the plastic trim
@rcoltlyf 2 ай бұрын
Yep. Noted.
@L3XURIOUS 2 ай бұрын
@rcoltlyf it's been 3 years since I did it on my is200 which is always parked outside and it still looks incredible. Hard to judge on video but my guess is that my trim was in worse shape
@teinspringz 2 ай бұрын
Welcome aboard vert lyfe 😂
@ukemike1 2 ай бұрын
what you want to know is whether the flow stays attached along the length of your diffuser not at the back edge. There's a about a 70deg turn there, of course that flow will separate. Put the tufts all over the bottom of the diffuser and figure out how to film that.
@rcoltlyf 2 ай бұрын
Best comment ever? The filming without interfering with the flow is the hard part.
@bw8476 2 ай бұрын
I did the same thing recently, combination of hot day, bad fuel and ECU not retarding quick enough. Putting 2nd hand motor in, lowering boost and do better knock contol. Have a 3rd engine that i may build forged.
@rcoltlyf 2 ай бұрын
Can't blame hot day for me, and ECU was definitely retarding but just not enough. Having tried the 'be nice to the engine' road (that was this engine) without success I am now forging. Don't get rid of your third engine. :)
@bw8476 2 ай бұрын
@@rcoltlyfyea i think once you're used to the power they can generate it is hard to take anything less, i know the day mine blew i was wringing it so no mr nice guy and at 4rd pull with a lil uphill it caved in.
@user-mi8xl3xj7f 2 ай бұрын
Do not lose. From Japanese Colt Driver.
@rcoltlyf 2 ай бұрын
Hai, ganbarimasu! :)
@ARCHANGELMIX 2 ай бұрын
I don't know how the graph from the dynamometer goes and how much newton meters you have. I think too much torque in the lower rpm range
@rcoltlyf 2 ай бұрын
Yeah. Nah. Low down torque on the dyno is not the issue (has been on the dyno, I wanted more down low, did not get it) and the engine was very much at high RPM when it went.
@ARCHANGELMIX 2 ай бұрын
GOOD WORK. 2:43 What is the purpose of installing these rubber gaskets under the hood ?
@rcoltlyf 2 ай бұрын
I'm not sure which gaskets you speak of. Both the rubber strips are OEM. My guess is they are there to force the air where it needs to go ie in the intake, and in in the radiator below..
@dodgeviper89 2 ай бұрын
Colt Cabriolet 100% as interim car
@DamienAlba 2 ай бұрын
build back better.... no mistaking that silhouette! be interested to know your thoughts on it as a car
@Treeman5744 2 ай бұрын
Which track day groups do you normally go with? Any experience with Evolve Driving or Driving Events? Thinking about doing a trip down from Brisbane at some point.
@rcoltlyf 2 ай бұрын
Have used both groups and I would rate both. Evolve is a bit more 'boutique' (read more expensive but fewer cars on track). Drive events run a good drive day too.
@Treeman5744 2 ай бұрын
Cheers! Good to know!
@HansBrodiAutomotive 2 ай бұрын
Sorry to hear about tve dead motor. What power do you expect from the forged motor ? Congrats on Colt CZC if I guessed this correctly 😊
@rcoltlyf 2 ай бұрын
Building for reliability more than power - will be putting the Arashi turbo back on again. So between e85 and a bit more boost maybe 165-170kw at the front wheels? I guess we will see.
@user-np8cz4ep7u 2 ай бұрын
I have good engine for you
@rcoltlyf 2 ай бұрын
Thanks but already have the next one sorted.
@user-id3su6ot1o 2 ай бұрын
Hi, what do you think about taking out the fog light and making an air curtain tunnel for front wheels instead of it. In case of drag reduction air curtains proved their efficiency.
@rcoltlyf 2 ай бұрын
I think it would be plausible if you can get the air around the corner from a round entry to a slit like exit in a non turbulent fashion. If it could not be done smoothly I reckon you just create more drag. I think there is probably a reason they go from slit like entrances to slit like exits on purpose built curtains.
@user-id3su6ot1o 2 ай бұрын
@@rcoltlyf Well I doubt that round to narrow tunnel would be an issue. Ford uses air curtains on F150 with extreme angles of air channel, and air box in the middle. This thing should be turbulent as hell, but it works. KZfaq bans my comments with links, so i can't share articles(
@Tnga 2 ай бұрын
@@user-id3su6ot1o Not sure ford does that anymore on the latest 150 models. At least, none I could see. Looks like they did like cybertruck, external channel around 1 inch wide on side producing similar effect. Cyber truck increased it to a 2 inch or so groove (or so I can guess from the other vid I saw) from their concept car which had less than a 1 inch groove/channel with purpose of wrapping around the outside of front tires. However that’s not to say it (the integrated internal channel) isn’t effective or done, plenty other do that curtain approach like fisker ocean on front and rear of front wheel. And then there’s rivian which has a strange large gap behind front wheels to prevent air pocket presumably. Seperately I see new lexus SUV’s messing with unique and significant protruding guides as well.
@diplomatofthesosbrigade931 2 ай бұрын
Could a bespoke canard be used to create a vortex to seal the floor edges?
@rcoltlyf 2 ай бұрын
I don't think it would be easy - a) it would need to be at the level of the side of the splitter - higher than that and it would not seal anything and b) it would need to survive the turbulence from the front wheel, which is considerable. Don't believe me though - see here: kzfaq.info/get/bejne/l6mIh7mhz5enmWg.htmlsi=Vbx0ij_tUDo0MNBj&t=440
@diplomatofthesosbrigade931 2 ай бұрын
@@rcoltlyf Great video! I guess I'm getting in over my head, but I'm curious if you could modify the back of the front fender to try and contol the air from behind the wheel somewhat, maybe using one of the bottom elements to create an air dam or sorts? I'm new to learning the finer details of aerodynamics and it's very exciting.
@rcoltlyf 2 ай бұрын
@@diplomatofthesosbrigade931Not sure I understand what you are talking about. This? kzfaq.info/get/bejne/b9Khh82JsLvbZ2Q.html
@Eduardo_Espinoza 21 күн бұрын
My thoughts exactly, I think they use a "curtain" for that too :)
@edsgarage001 3 ай бұрын
I got a similar result in my testing
@rcoltlyf 3 ай бұрын
Cool