Go Back   DIY Go Kart Forum > Building Plans And Advice > All Other Parts

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 02-10-2020, 04:36 PM
x-Speedy-212-x's Avatar
x-Speedy-212-x x-Speedy-212-x is offline
●▬▬▬▬▬๑۩۩۩۩๑▬▬▬▬●
 
Join Date: Nov 2016
Location: Not The Slow Lane.
Posts: 48
Thanks: 9
Thanked 4 Times in 4 Posts
Default Chain-driven Turbocharger?



Came across this and thought it was interesting. Just keep in mind on normal 5+ liter(5000 cc) v8 engines it needs to spin 50,000 rpm just to get 9psi. These 212cc engines are only .212 Liters

The sprocket i counted to have 12 teeth (about 1.5 inch) and it may possibly need a jackshaft to increase the gearing on the supercharger itself to provide boost.


Supercharger gearing aside, oiling would be necessary and placing a secondary carburetor in front of the compressor inlet would be needed for draw-through for when the boost kicks on. And fuel pump.
__________________
__|▀▄▀▄▀▄▀▄▀▄▀▄|_
Reply With Quote
  #2  
Old 02-10-2020, 04:51 PM
JTSpeedDemon's Avatar
JTSpeedDemon JTSpeedDemon is offline
2019 Build Off Winner!
 
Join Date: Jan 2019
Location: Texas
Posts: 3,412
Thanks: 774
Thanked 526 Times in 478 Posts
Default

Yeah, but those huge superchargers are so ridiculously humongous that it probably wouldn't want to rev up, plus you'd have to underdrive it a lot.
And by then, with all the extra weight, complexity, and cost, I'd much rather have a quick revving, powerful naturally aspirated engine.

Or you could just put an AMR300 roots type(I know Sid will pop in and harp on me that it's not technically a supercharger, but whatever) supercharger on it, for maybe ~$250-$300 total, and thrash it!
Plus AMR300s are made for ~300cc engines, so even at a 1:1 drive ratio, they can develop a considerable amount of boost.
Plus, AMR300s are filled with oil, so that's a HUGE plus for these splash lube engines.

Why not just have a draw through setup from the get-go? Why only a secondary set up for draw through? A fuel pump might not even be needed.
__________________
Currently Flathead-Crazed
Reply With Quote
  #3  
Old 02-11-2020, 01:45 PM
Kartorbust's Avatar
Kartorbust Kartorbust is online now
Senior Member
 
Join Date: Feb 2016
Location: Lincoln, NE
Posts: 3,137
Thanks: 652
Thanked 819 Times in 689 Posts
Default

Wonder if chain driving it would technically make it a centrifugal supercharger then. You would have to severally under drive it to get it going that fast.
__________________
In the age of information, ignorance is a choice.
Reply With Quote
  #4  
Old 02-11-2020, 04:38 PM
anickode's Avatar
anickode anickode is offline
Senior Member
 
Join Date: Apr 2010
Location: S.E. Michigan
Posts: 1,902
Thanks: 64
Thanked 848 Times in 586 Posts
Default

Quote:
Originally Posted by Kartorbust View Post
Wonder if chain driving it would technically make it a centrifugal supercharger then. You would have to severally under drive it to get it going that fast.
Yes, a centrifugal supercharger.

Turbos and centrifugal supercharger compressors spin on the order of 100,000+ rpm. You ain't getting that out of a chain and sprockets. Centrifugal superchargers are internally geared to achieve that.

You could spin it slower, but it won't build any pressure. At 10k rpm, you might be equivalent to a hair dryer.
__________________
"Well that would be a bomb."
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:33 PM.