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Doc Brown
Doc Brown Dork
9/15/20 4:05 p.m.
Mr_Asa said:

Finally got time to watch all the vids.  Love 'em.

A note on production, the spots where you're just turning a wrench and not talking, maybe speed those up so they zip by faster?  They kill the momentum a lot.

Thanks!  That is exactly the feedback I need, Making videos is quite the learning process.

Doc Brown
Doc Brown Dork
9/15/20 5:43 p.m.
Vajingo said:

Hey they have a way to adapter old smog pumps as super chargers to these engines. Look up "smog pump supercharger predator". Only a few psi, but worth it on that small of an engine. 

Thanks for the heads up!, I'm on itsmiley

Doc Brown
Doc Brown Dork
9/15/20 5:46 p.m.
Floating Doc (Forum Supporter) said:
Vajingo said:

Hey they have a way to adapter old smog pumps as super chargers to these engines. Look up "smog pump supercharger predator". Only a few psi, but worth it on that small of an engine. 

I would imagine that a few pounds above atmosphere pressure is all you'd want. I can't imagine that the connecting rod is that robust.

Might want to check the ring gap if you boost it.

Stay tuned, because down the road the engine is getting a billet rod and a lot of other mods.

rattfink81
rattfink81 Reader
9/15/20 6:52 p.m.

I watched all the videos last night. Pretty cool stuff.
So since I have a two seater go kart sitting in the yard and I'm planning on doing a 212 predator engine, where did you go for the stage 1 parts and such? 

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
9/15/20 7:01 p.m.
Doc Brown said:
Floating Doc (Forum Supporter) said:
Vajingo said:

Hey they have a way to adapter old smog pumps as super chargers to these engines. Look up "smog pump supercharger predator". Only a few psi, but worth it on that small of an engine. 

I would imagine that a few pounds above atmosphere pressure is all you'd want. I can't imagine that the connecting rod is that robust.

Might want to check the ring gap if you boost it.

Stay tuned, because down the road the engine is getting a billet rod and a lot of other mods.

"Billet rod" - bought a chunk of steel from Home Depot and drilled journals at it?  smiley

11GTCS
11GTCS Reader
9/15/20 7:22 p.m.

OMG, this is awesome.  Please continue!

nderwater
nderwater UltimaDork
9/15/20 7:34 p.m.

Props, these are fun videos. I didn’t think you’d break 30 mph, so you’re already off to a great start.  Those Predator 212s punch above their class for sure.

Mr_Asa
Mr_Asa SuperDork
9/15/20 7:52 p.m.
Doc Brown said:
Mr_Asa said:

Finally got time to watch all the vids.  Love 'em.

A note on production, the spots where you're just turning a wrench and not talking, maybe speed those up so they zip by faster?  They kill the momentum a lot.

Thanks!  That is exactly the feedback I need, Making videos is quite the learning process.

A common thing people do with those seems to be to play whatever their theme song is over whatever is being sped up.  If you've got a theme song that won't cause you to get your account locked for copyright infringement

Vajingo
Vajingo New Reader
9/15/20 8:13 p.m.

In reply to Mr_Asa :

1 vote for "FInal Countdown"-Europe. 

Doc Brown
Doc Brown Dork
9/15/20 8:38 p.m.
rattfink81 said:

I watched all the videos last night. Pretty cool stuff.
So since I have a two seater go kart sitting in the yard and I'm planning on doing a 212 predator engine, where did you go for the stage 1 parts and such? 

The individual parts for the stage one kit were sourced through Amazon, ebay, OMB warehouse and BMI karts.   I shopped around  and got the parts cheaper then buying an actual stage one kit.   

Doc Brown
Doc Brown Dork
9/15/20 8:41 p.m.

In reply to Mr_Asa :

I have access to royalty free music for YouTube creators, but its hard to find free stuff that actually sounds good.

Doc Brown
Doc Brown Dork
9/15/20 8:44 p.m.

In reply to Pete. (l33t FS) :

LOL,  its not hard to take the base $99.00 engine and dump a grand into it.  Pretty much every part can be had with some sort of upgrade.  The predator 212 is sort of like the small block chevy of kart engines.

Mr_Asa
Mr_Asa SuperDork
9/15/20 9:06 p.m.
Doc Brown said:

In reply to Mr_Asa :

I have access to royalty free music for YouTube creators, but its hard to find free stuff that actually sounds good.

I wonder if there are any musicians on here that would be willing.

wvumtnbkr
wvumtnbkr GRM+ Memberand PowerDork
9/15/20 10:00 p.m.
Mr_Asa said:
Doc Brown said:

In reply to Mr_Asa :

I have access to royalty free music for YouTube creators, but its hard to find free stuff that actually sounds good.

I wonder if there are any musicians on here that would be willing.

interstellar sledgehammer perhaps?  I hope i didnt mess up that name.  They sound awesome!

03Panther
03Panther HalfDork
9/15/20 10:11 p.m.

Just saw this. Cool stuff! I actually have a chassis from a legitimate car made from 78 - 82. Really a tadpole trike. But came from the factory with a 12hp Briggs! Google H-M Free-Way

ProDarwin
ProDarwin UltimaDork
9/15/20 10:18 p.m.

Predator powered sub class at the challenge would be very interesting.

03Panther
03Panther HalfDork
9/15/20 10:37 p.m.
ProDarwin said:

Predator powered sub class at the challenge would be very interesting.

I like that! Will there be an award for who can bring the SLOWEST one? I think I can win that!

Strizzo
Strizzo PowerDork
9/15/20 11:56 p.m.
Doc Brown said:

In reply to Mr_Asa :

I have access to royalty free music for YouTube creators, but its hard to find free stuff that actually sounds good.

YouTube studio has some decent free/royalty free music you can download. Also I'm shocked you only have 572 subs, production value is far better than a lot of you tubers out there with 10s of thousands of subs. Well done! 

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
9/16/20 10:06 a.m.
03Panther said:
ProDarwin said:

Predator powered sub class at the challenge would be very interesting.

I like that! Will there be an award for who can bring the SLOWEST one? I think I can win that!

until this very moment i did not know i needed this distraction in my life.

Vigo (Forum Supporter)
Vigo (Forum Supporter) MegaDork
9/16/20 10:54 a.m.

14" tires are so cheap you might be able to stretch 5th just by installing slightly taller tires, preferably as narrow as humanly possible (might even be some junkyard 4x100 space savers that hit the diameter and narrowness nail on the head. I dont think the stock space saver is any taller than the tire you're already running although it is absurdly light). And i sure as heck would run every tire at its rated maximum pressure to minimize rolling resistance since speeds are so low and the car is so much lighter than stock anyway.  As someone with both an Insight and a 212 predator sitting around this has been a very entertaining build series so far!!

03Panther
03Panther HalfDork
9/16/20 11:04 a.m.
AngryCorvair (Forum Supporter) said:
03Panther said:
ProDarwin said:

Predator powered sub class at the challenge would be very interesting.

I like that! Will there be an award for who can bring the SLOWEST one? I think I can win that!

until this very moment i did not know i needed this distraction in my life.

I have either a magnum wagon to put one in, or an Astro van... think I can get one up to 20 mph?

Strizzo
Strizzo PowerDork
9/16/20 11:57 a.m.

looking at the dyno chart, are you sure peak power is at 4200?  could the governor have been starting to come in before it hit the wall, or is it just like a rev limiter? 

2002maniac
2002maniac Dork
9/16/20 5:35 p.m.

Very clever and fun project! I watched all 4 videos and am looking forward to more.

I've daydreamed of building a gambler 500 rig using a predator engine. I think if I could keep it light, use a dual range gearbox of some sort. It might be capable of doing some off roading and the occasional road transit (30mph goal?)

Doc Brown
Doc Brown Dork
9/16/20 6:34 p.m.

In reply to Strizzo :

 

We ran the engine on the dyno about 10 times without the governor.  The RPM's maxed out at 6200 before the valves started floating.  Anyway, without the governor it was obvious the engine stopped making power around 4200 rpm.  In order not to destroy the engine, we  reconnected the governor and adjusted it to to cap the RPM's at around 4500.  After the governor was modified, the engine was subjected to a number of additional dyno runs.

On these Predator engines the flywheel can handle about 5000 RPM, but that no guarantee. The likelihood of the connecting rod letting go also increases above 5000 RPM.   

The good news is the next time we dyno the engine it will have a billet rod and billet flywheel 

 

 

The area circled is where the governor limited the RPM.

 

 

Doc Brown
Doc Brown Dork
9/16/20 6:46 p.m.

In reply to 2002maniac :

Plenty of videos are on the way.  Im running the 212 Predator specifically for the video series.  By the time I get done with all the mods it would have been cheaper to use a 420 Predator.  At some point I will go with the 420 and then do the mods on that one.  That being said, I'm pretty sure the stock 420 would be acquit for most  oddball builds.

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