420cc Mini Bike New Top Speed

[@darintraver4983]

So great !!!! It’s fun watching you figure it out .

[@larryluna36]

Thanks for watching!!

[@samaxeman123]

these big blocks are awesome, just hard to gear it for starting on hills and slow street riding as you are limited with the 14 tooth clutch

[@larryluna36]

Yes the only thing you can do is change the rear sprocket

[@brodrea7664]

Torque converter would fix that issue

[@MR_IC]

If you can tig weld or know someone that can, I’d suggest you make a custom gas tank that runs along the entire length of the underside of your top tube. Just a thought.

[@larryluna36]

I actually wanted to do that and get a 1 Gallon cylinder tank but someone I know stopped making them for a while.

[@Razic1984]

try a polini dream bike 12,5 hp it will lift the front end even at 30mph have to hold it on the back brakes. cute build though

[@larryluna36]

I’ve heard of those engines 😂 I’ve never actually ridden one but I heard they’re very wheelie happy

[@lukekrueger6593]

That things a death wish😂 love it

[@larryluna36]

It really is now and I have more plans for it still😂

[@refinedmatt1597]

Hell yeah homie big difference now shit is bad ass

[@larryluna36]

Thank you man I appreciate the support. I have bigger plans for it still.

[@Callofdutyjoey]

Going that fast you need to get a steering stabilizer because if the bars move one way too much while you’re tucked down it will just throw you off. I had it happen to me on a different bike with taller bars where my hands were right in front of me and up some more.

[@larryluna36]

Thank you for that information. I didn’t know I needed one but I will look into it.

[@jediahfish]

74.1 MPH = 119.3 KPH Safe riding brother, be careful and maybe wear more layers because even that footpath is able to turn you into human mincemeat and I'm sure you know that. You don't regret riding naked until it's too late.

[@larryluna36]

Thank you and that is very true. I appreciate it

[@JoJoDaJuggman]

Ngl as long as you know defensive driving u don’t need all that padding forreal , just drive safe and always be careful for others that aren’t use to seeing a motorcycle on the free way or street

[@lifehealth489]

yeah dont get caught with the 73 brain cells still alive and the rest dead

[@nutsnbolts4601]

I have other question sir I appreciate ur help in regards to drilling out the dial pen area. I was wondering if you could explain that just a bit more or if by any chance you may have a picture ? Of how u did this in odder to fit everything properly also it’s ok to remove the electric starter and just have that hole open exposed as well ? Thank u sir.

[@larryluna36]

Yes i removed the whole starter assembly and I now have the hole exposed. It will be safe to run as far as I know as long as nothing gets caught in there because the flywheel is exposed a little. I can actually show you exactly how I drilled out the area where the dial pen goes. I will have a video up soon but I’ll upload a KZbin shorts about it since I’m trying out a new torque converter for it to see the difference and I can show you exactly what I did to make it fit.

[@nutsnbolts4601]

@@larryluna36 brother u are the man thank u sir helping me out me that I rather be safe then sorry and I got everything loking really good at this point just last thing to do is the drilling for the clutch in the shaft to fit as you did I’m super excited and thank u again for the awsome ideas u came up wirh to make it work.

[@larryluna36]

@@nutsnbolts4601 No problem man!! Thanks for watching and supporting the channel

[@larryluna36]

Check out my new video i just posted. I explained how I drilled out the dial pen area more and showed exactly how I did it. kzbin.info/www/bejne/ppKknmmXn8poY7cfeature=shared

[@818adventures]

Sick dude. Can you do a video on how to tune properly 🙏🏼

[@larryluna36]

Of course I will take my time to explain that and do a video on that very soon.

[@farvatron]

nice bike man! you might be able to get more power by using grippier tires and better quality fuel

[@larryluna36]

I think so too it’s basically all stock right now and just running on regular gas

[@Pizzastevesgardenandmore]

Bro you needa seriously upgrade ur brakes 💯 fuckin awesome bike build tho 💯

[@larryluna36]

Thank you man I appreciate it!! This foot brake finally works good now but yeah i know a actual disk brake set up would be much better

[@Pizzastevesgardenandmore]

@@larryluna36 yeah get hydraulics 👍🏼👍🏼

[@squeezeteam610]

Yo man what clutch are your using and what do you recommend torque converter or clutch I'ma be doing a 301 build but I might wanna run a clutch you let me know

[@larryluna36]

I’m running a regular $25 clutch from Amazon. I cut the springs shorter from it so it won’t burn the clutch at idle or low rpm but it ran great and had no issues. Right now I’m in the process of making it run with a 40 series torque converter but I will make a video on it once it’s running.

[@NouriGains]

i got a 212cc built drag bike but the torque heavy 420cc is drawing me in to build another!! what was your carb size, and jetting ??

[@larryluna36]

Starting with a 420cc even stock is already a head start because of how much more power and torque it has over a 212cc. The carb I’m using is a flat slide 28mm and the jet is a 120 and needle position is 2nd to the bottom. It runs perfectly smooth it doesn’t bog at all but I think it could use a little more tuning because the spark plug isn’t colored the way it should be

[@NouriGains]

@@larryluna36 I got a 24mm pwk i got a 140 main 32 pilot silver needle in middle but im at 212cc 308 cam 1:1 champion rockers 27/25mm SS valves. You may need the main to be richer ? Subbed following the progress

[@jamesgravel7755]

That thing got a lot of room for improvement. Cam/valve springs?? 30mm carb? Better clutch? All things that will MPH faster. I bet you a clutch gets you 5mph. I have a cheap one now and it has to go. It ruins top end

[@larryluna36]

It certainly does have a lot to improve. The only thing done to it is governor delete, a 28mm carb and exhaust with muffler. I do need to get a new exhaust because this one right now is for a 212 and the tube size is actually restricting the exhaust flow and it has a muffler to make it even more restrictive.

[@larryluna36]

Internally everything is bone stock. No cam no valve springs or anything it’s completely stock just how it came out of the box

[@mdp9810]

@@larryluna36where did you get the frame from

[@larryluna36]

@@mdp9810 I got the frame from @backalleyminibikes on Instagram I messaged them and they were quick to reply.

[@mdp9810]

@@larryluna36 thank you 🙏

[@lifehealth489]

it takes 73 brain cells to run this iny tiny bike 73 mph

[@larryluna36]

It’s definitely sketchy with small wheels 😂

[@harryschneider9845]

what tire size and gear ratio u got ? i got a 420cc with stock style carb - 3.85 ratio - 145/70-6 tire and just hit 61mph today after i removed the balancer (wanted to see what it does - gained 1mph)

[@larryluna36]

I have 5 inch tri-star rims with 11/5-5 tire rear and 4.10/3.50-5 front tire. Gearing on clutch is 14tooth and 35tooth rear sprocket. Motor is all stock just 28mm carb, exhaust and governor delete.

[@SpAcEcruizer203]

Wow 😮

[@larryluna36]

It is a Very fast bike 😂

[@SpAcEcruizer203]

​@larryluna36 what do u have on the clutch to hold it on lol what is that 🤔

[@mikesullivan5314]

What frame is this? I want to build one with a 420 or 469 but I’m worried about engine clearance

[@larryluna36]

This is a standard 5 inch BAM frame, not a custom frame it’s just a regular 5 inch frame. You will run into problems with clearance in a couple different places but I’d recommend you buy the gopower sports big block plate adapter to make it a lot easier.

[@matt3x37]

What’s the clutch you’re using?

[@larryluna36]

A regular 1 inch bore clutch off Amazon for like $25

[@derrickjackson3822]

Can you drop ths link for the rear sprocket

[@larryluna36]

I got the rear sprocket from srericsgarage on insta.

[@kikkerdiegamed]

hi back again im having trouble finding the right wheels i was thinking of buying citta girela wheels but i dont know

[@larryluna36]

I’m running a 5 inch tri-star rim with CST tire

[@kikkerdiegamed]

@@larryluna36 thx i'l look into it

[@kikkerdiegamed]

@@larryluna36 ok so i looked and found big 17 inch tires that could go 220km/h and im making mine 200km/h so it will be fine

[@larryluna36]

Yes you will be fine

[@LoganAdams-nu8vl]

What Does the amount of teeth on a sprocket do

[@larryluna36]

It changed your gear ratio. Depending if you go bigger or smaller it can either give you more acceleration but less top speed or give you slower acceleration but higher top speed.

[@danparras1830]

Clean bike

[@larryluna36]

Thank you man I appreciate the support!!

[@Bighemi82]

I love your video now add a billet flywheel and get more top speed and take off

[@larryluna36]

It will definitely be a difference I heard the flywheels on these big blocks are significantly lighter. I will start adding performance parts next and just make it even crazier!! 🤣 thanks for watching

[@Bighemi82]

@@larryluna36 your bike flying

[@thekingsean99_59]

What speedo app do you use

[@larryluna36]

It’s called Speedometer 55 GPS Speed & HUD it’s only available for iPhone.

[@nutsnbolts4601]

🎉🎉❤

[@larryluna36]

Thank you for the support!!

[@theLyzhendricks]

Goes faster then my 700cc quad 😑

[@larryluna36]

😂 that quad will destroy this mini bike off road though. They’re so much fun

[@theLyzhendricks]

@@larryluna36 Tru dat

[@rickduncan2929]

What rim & tire size?

[@larryluna36]

Rims are 5 inch tri star and tires are 11 inches

[@Strict30]

How did you mount the engine?

[@larryluna36]

I have a video up on my KZbin showing the process but I bought a gopower sports big block mounting plate and drilled new holes on my frame and had to grind the block a little .

[@Strict30]

@@larryluna36 heck yeah

[@jasonpestel5488]

are you in the Santa Ana area I ride out on that river bed all the time

[@larryluna36]

Yes this is the Santa Ana river bed trail

[@refinedmatt1597]

🔥🔥🔥🔥🔥🔥

[@charlielopez9222]

What was ur gearing?

[@larryluna36]

It’s 14tooth on the clutch and 35tooth on the rear wheel

[@smoke.tokes420]

THAT THING IS FASTER THEN MY 125 I TOP OUT AT 80KMH

[@larryluna36]

It is 😂 do you have a 125cc dirt bike?

[@smoke.tokes420]

@@larryluna36 yeah its a pos lmao

[@smoke.tokes420]

@@larryluna36 its on my page if you wanna check it out 1 down 3 up 125 4 stroke

[@micahzetrovamoseley5256]

I recently bought a mega moto with a 98cc engine and a slight mod, I was testing out how fast i could go yesterday and reached 71kmh

[@taxevaderdrew]

what frame is that engine sitting on?

[@larryluna36]

It’s a BAM 5” Frame it’s not custom just regular frame.

[@flatearther5780]

What's the best carb for a stock 212 with a budget?

[@larryluna36]

I honestly found the best carb set up for my old predator 212cc was a Amazon 26mm round slide carb. It ran perfect for me with a 125 jet and the little clip being 2nd to the top slot on the needle.

[@flatearther5780]

@@larryluna36 how much do they cost?

[@larryluna36]

I’ve seen the whole kit that comes with extra jets,filter,intake manifold and hardware for about $35-50

[@larryluna36]

My 212cc all it had done to it was springs, 26mm carb, and exhaust and that carb set up was perfect for me and gained a good amount of power/speed.

[@flatearther5780]

@@larryluna36 thats nice I'll have to look in purchasing one

[@izzacdagoon]

That is so sketch!!! I barely could go 30 on mine and it’s already fast 😭

[@larryluna36]

It is sketchy and there’s people who go over 90-100 that must feel crazier

[@Strict30]

That's a stock engine fasho

[@larryluna36]

Yes all stock internals with this 420cc predator