Dangerous Flywheels Predator 212?

[Crappy212go kart]

So, I'm building up an older Non-Hemi Predator 212 motor on an old frame, and have heard that the flywheels tend to explode past around 6,000 rpm. I don't want to have flywheel bits end up in my back, so if I want to push past 6,000 should I be concerned about that? Thanks.

 

[Hellion]

Governors, Flywheels And An Internet Full Of Crap

Reposting this superb article written by Doc Sprocket, from this thread. (edited for spelling ~Hellion) "This has come up recently, again, so I'm going to post this here. What you are about to read is a couple of articles I wrote sometime back, that address the function of the governor, the...

www.diygokarts.com

Predator flywheels tend to launch the magnet alone into a low earth orbit. For peace of mind, replace the flywheel with an aftermarket one; ARC comes first to mind. I forget the other brands but someone else will chime in. There was a $26 Scamazon special that we want you to try...

 

[Hellion]

$25.99 10K RPM Clone Flywheel

Is it legit for 10K RPM? Who's our test subject who will rev it to ... (let's be realistic here) 6,500+ revs?:wai: Flywheel 10krpm For Predator 212cc 196cc 224cc Non-Hemi Cast, Fit Honda GX200, 69730 69736 Aluminum...

www.diygokarts.com

 

[Crappy212go kart]

ok thanks a lot man

 

[Sparkwizard]

ARC is a proven performance manufacturer. All others, in my humble opinion, are trying to cut corners and outsell them.
I install ARC parts for my customer/friends if they want so spin engines past original design specs.

 

[Minimichael]

Kids, cover your ears... but I heard genuine Honda GX flywheels are considered safer than the stock off-brand stuff, and even maybe tested safe within the 5-6000rpm range (look it up). Just thinking maybe a GX140 or 160 flywheel could run even safer on a GX200, sort of like a Briggs & Stratton 3hp flywheel is said to boost performance on a Briggs 5hp motor. I'm telling ya there ought to be a chart showing which genuine vs. non-honda clone parts are interchangeable. How can ARC be the only game in town?

 

[Sparkwizard]

I had a GX200 on a modified Manco yard cart in the 90's. I never verified it, but that little engine probably spun over 5 grand every time we took it out on those trails. It was a Honda, and quality manufacturing still makes a difference. It was well above $100 even back then.

 

[Crappy212go kart]

What about the plastic fan on the stock 212 flywheel? Is that up to the task of 6000+ rpm? Or do I need to get an aftermarket flywheel with the attached fan?

 

[Hellion]

Who else was selling high RPM-rated flywheels, was it Tillotson or Ducar? I’ll answer my own question the best I can but I feel like I’m leaving some of them out.

Tillotson 212E Flywheels - EC Carburetors

Most aftermarket flywheels have the cooling fan fins forged or cast into them. Otherwise the plastic should be up to the task; I mean who cares if the plastic fins fly off, just slap another one on there.

 

[panchothedog]

The plastic fan is the least of your worries. Every aftermarket aluminum flywheel
has fan blades ( with the exception of a few drag race flywheels ) where cooling is not an issue. Post # 5 by Sparkwizard is right on. ARC is the gold standard.
You will never regret buying quality. I own 6 of them. I see people down playing the need for aftermarket flywheels. The quality of the Chinese metal, aluminum, steel, and especially cast iron is horrible. Do you really want to bet your back, or possibly your right arm that the stock cast iron one will hold together while you have the throttle buried letting it wind up as high as it will go?

 

[Minimichael]

The plastic fan is the least of your worries. Every aftermarket aluminum flywheel
has fan blades ( with the exception of a few drag race flywheels ) where cooling is not an issue. Post # 5 by Sparkwizard is right on. ARC is the gold standard.
You will never regret buying quality. I own 6 of them. I see people down playing the need for aftermarket flywheels. The quality of the Chinese metal, aluminum, steel, and especially cast iron is horrible. Do you really want to bet your back, or possibly your right arm that the stock cast iron one will hold together while you have the throttle buried letting it wind up as high as it will go?

Uh ...no.

 

[Hellion]

Are we back to the exploding flywheel myth? Asking for a friend.

 

[Grizzlymi]

Just save some time and get the ARC billet flywheel. Can't go wrong for $100, and have that peace of mind.

 

[Crappy212go kart]

Ok thank you guys so much.

 

[Thepartsguy]

Are we back to the exploding flywheel myth? Asking for a friend.

Ohh we are so back!!

 

[Hellion]

I don’t know, that looks like a crack to me…

 

[Minimichael]

Holy moly

 

[Denny]

But it didn’t splode!

 

[panchothedog]

But it didn’t splode!

No it didn't. But I bet it was VERY close to doing so. I know I wouldn't want to put that thing between my legs or right behind my back and go for a good long fast ride. Anybody else game?

 

[Edwin Spangler]

NOPE!