Twin Supercharged 4 Cylinder Nitro RC Engine

these are some of the coolest  little engines I've ever seen originally I was   just gonna jump right into a crazy episode with  this thing but I was so impressed with how this   thing looked and sounded in that previous video  i decided to modify it first by building a   twin compound supercharger setup giving this  thing some forced induction so it can breathe   then i'm going to run this thing full throttle  as hard as i can with as much boost as possible   while filming it with the high speed camera in  slow motion just in case something crazy happens i think you're gonna like what i  have in mind let me get started okay i'm all done this is the way it came out  and it's not very often i'm happy with the way   that something i built came out but in this case  i would say i'm pretty happy it's hard to convey   on camera how mean this engine looks right now  here's how i have my supercharger set up i have   two superchargers and a compound configuration  and if you're not familiar with what compounding   is whether it's superchargers or turbochargers  let's just say for numbers sake each one of these   superchargers makes 10 psi of boost that means the  first supercharger will boost that pressure up   from the ambient pressure to 10 psi and then the  second supercharger will boost that 10 psi up to   20 psi and that's going to be our intake pressure  that's the idea of compounding and compound   turbochargers work the same way mostly i've seen  them in diesel applications but i'm assuming you   can use them on gas too i have a fuel pressure  reference coming off of the intake manifold here   that's pressurizing the fuel tank in relation to  how much pressure is in the intake so what that   means is as the pressure goes up in the intake  our fuel system pressure goes up and the amount   of fuel going in the carburetor increases as the  boost increases looking at my supercharger pulleys   my pulley ratio is about five to one which means  that for every one rotation of the crankshaft we   have five rotations of the supercharger impeller  however if this isn't enough the way i designed   this is to be able to easily switch out the  pulleys if i need to if i decide to speed up those   superchargers maybe double or triple the speed  i got the fuel tank full the glow plugs are hot   without further ado let me get this thing started  up and see if it sounds as mean as it looks   i see a problem already my supercharger pulley is  coming loose i had to stop it there because   my supercharger pulley was becoming unthreaded  don't ask me why but this supercharger impeller   came with right hand threads even though it turns  in a counterclockwise direction to make boost that   makes absolutely no sense i think it should have  left hand threads so it's trying to tighten itself   as it gets resistance from that impeller i'm going  to put some red loctite on here and get this thing   fired back up one more thing i did do i hooked  up the radiator which i forgot to hook up in the   last run but i got it all hooked up ready to go  let me start it up again let's see what it does wow that was a short run but man did that thing sound  mean and that's exactly why i have the high speed   camera set up to capture failures like that  it looks like my belt tensioner blew apart   i think i just need loctite on everything  i could hear the supercharger whine   after the engine shut off while the superchargers  were still spinning i couldn't hear that with   the engine running another thing is that the  boost pressure was pushing out my intake pipe   all right here we go i got my pulley all  fixed up my intake tube pressed back into   the supercharger i made some adjustments there  so it'll hold the pressure and it won't come out   and i added a little throttle extension because  i don't really feel safe having my fingers right   next to the engine just in case something  happens like this happen maybe something's   gonna happen back here all right let me get  it started hopefully third time's a charm looks like all four cylinders are firing and  if i look at the thermal camera i see some heat   what is that that's heating up oh shesus that's  my idler pulley that's heating up what the heck   i don't know why that's heating up like  that it's kind of weird that sucker's   burning hot i just put some motor oil  in there i'm gonna try this yet again   didn't get much of a run out of it  but let's see what happens this time Reminds me of a 1000cc Jap Bike all right i think that sounds pretty good  um oh man i got a lot of heat coming off my   radiator that's for sure actually i think my  water's starting to boil, its definitely overheating   even though i have the radiator with the fan  we're at 235 degrees oh yeah we got pressure in   that cooling system those hoses are about to pop i  need to get this thing cooled down really quickly oh there it goes i knew it overheating well i guess that  extra boost pressure definitely had an   effect on how much heat the engine is producing  everything is all needs to be cleaned up now whoa   all right well i think that went pretty well  there's a few things that i need to change   before using this engine in that project that i  have coming up and the first thing i think i need   to change is the size of these superchargers at  this point these superchargers are running beyond   their maximum rpm for this style compressor  and that makes me think they're just too small   i mean this is a four cylinder engine it's not  a single cylinder so i think i'm going to have   to go larger on the superchargers i'm not sure how  much pressure it made because i didn't look at the   footage yet but when i took a peek it was around  3 psi i want to see more like 8 10 or 12 psi   something crazy to either blow the  intake off or make some serious power   with this little engine the second thing is i need  to do something with this radiator and fan setup   because even though the boost pressure  wasn't what i wanted to see it was enough   to increase the air charge in the fuel to the  point where this engine was overheating the stock   radiator next time you see this engine i'll have  all those changes done one more thing before you   go i have a project that i've been working on with  my sister that i wanted everybody to check out   i came up with the idea and i designed this  application around the way a guy's mind works   for instance if you're in the store and somebody  sent you a whole list of items to pick up in the   store for them in a text message you basically  copy and paste that text into the application   hit search it deciphers the entire text message  and lists out all of the items in list form in   chronological order so for instance if you're  on your way out of the supermarket and you gotta   go somewhere and then your girlfriend baby mama  whoever sends you another text hey you know what   are you still in the store i got like five more  items i want you to find and you're like oh my   god i gotta be somewhere i gotta go i hate being  in the store you can take that text message put   it in the app find it look for it and get out of  the store quickly that's the idea it's different   than anything else that i've seen out there it's  an app called text to shop and we have the first   version ready to release so i wanted everybody to  check it out first it is still under development   i'll leave a link in the description below  tell me what you think tell me what you think   about this episode and this project and this  build that's about it see in the next video adios

Channel: Warped Perception

Views: 1,296,519

Rating: 4.8932142 out of 5

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Id: 142Cd5KLWGs

Length: 15min 44sec (944 seconds)

Published: Sat Mar 06 2021