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How not to gear a minibike with a DuroMax 208? 

Black66
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3 окт 2024

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Комментарии : 45   
@billypike3797
@billypike3797 Год назад
So I bought my kids a mini bike for Christmas, and it was hands down the crowd favorite. I have to buy 3 more now lol. I was so happy to see that we can hot rod these bad boys. Where's the best places you'd recommend for parts? I see a bunch on eBay but I'd rather buy quality parts. You picked up 4 more subs. Me and my 3 boys.
@scottwiley
@scottwiley Год назад
You could definitely hear the way the engine loaded on clutch lock-up that it was not happy with that gear set.
@JCTEAM60
@JCTEAM60 Год назад
Another great video. You proof my ideas so I don’t have to. Thanks!
@jacobvance4608
@jacobvance4608 Год назад
That doodlebug stretch video ever coming?
@Black66
@Black66 Год назад
Ya, ill put it out there in the next week or two.
@tmscam5115
@tmscam5115 3 месяца назад
I run 4-1 gear on my mild built 236 on Motovox frame stretched 8 1/2 inches does 75 mph idk 0-30
@glennquagmire1747
@glennquagmire1747 Год назад
Would like to see him building a trike from ground up
@Popcorx
@Popcorx Год назад
Why a trike
@Popcorx
@Popcorx Год назад
I'm running a 3.3 ratio on a predator 212 not alot of torque but when you moving it goes quick I've hit 67 on my speedometer app, but the gear ratio calculator says I should be pushing 72 I have a 10t clutch and a 36t rear
@Black66
@Black66 Год назад
The calculator gives you a ballpark but doesn't take into consideration the weight of the rider, engine mods, elevation, etc.
@elijahcrawford9790
@elijahcrawford9790 5 месяцев назад
What u all got on that bad boi
@Popcorx
@Popcorx 5 месяцев назад
@elijahcrawford9790 I wrecked it last year, just needs front forks,broke l1-l2-l3 in my spine had to have a spinal fusion, I still Have the bike, gonna rebuild , it's a 212 that I Ported the intake and Exhaust a bunch when I was younger it has Straight pipe, 18lb springs, Stock carb, Thumb throttle 👍🫡
@prestonclyde5667
@prestonclyde5667 Год назад
Why not add a torque converter instead of centrifugal clutch
@Black66
@Black66 Год назад
Check out the playlist. I use a torque converter on many different bikes, Thanks for watching.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-SuBNz0jH5pU.html
@Omega50022
@Omega50022 Год назад
You ever played around with a big block engine on a mini bike like a Predator 420 or gx390?
@Black66
@Black66 Год назад
Not yet...
@Popcorx
@Popcorx Год назад
How is a predator 420 a "Big block"
@Omega50022
@Omega50022 Год назад
@@Popcorx it's a term I've seen thrown around by other mini bike guys, 196/212/224 being the small blocks and the 305/420cc being the big block in relative terms when talking about mini bikes
@Popcorx
@Popcorx Год назад
@@Omega50022 I've seen it thrown around but never quite understood I thought there was something about it making it a big block but I understand it is bigger than the smaller engines
@geraldwillcox
@geraldwillcox Год назад
This 15t clutch might work better with 72t on the Tire
@Black66
@Black66 Год назад
Maybe. Check out this bike. It did over 70 after swapping ratios. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xV8i59aGUao.html
@williambaillie4126
@williambaillie4126 Год назад
Well it depends on what your looking for out of what your driving on. Torque curve on your motor will go down. Boost your compression with larger piston and open up the carb. If your dealing with a one gear set up the only way to get more speed is to put more teeth on the clutch or less teeth on the rear wheel. Torque curve is a problem with a one gear set up, do you really want your motor to constantly be in the higher RPM range?????? I suppose if you don't mind rebuilding them or making them loose and just getting a new motor every year and a half two years. The life span on these newer motors sucks.
@Black66
@Black66 Год назад
Check out this video on gear ratios on a minibike. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xV8i59aGUao.html
@scorpioslab
@scorpioslab Год назад
It puts more stress on the motor running a bigger tooth off the crankshaft go with your original five to one gearing and go with 20 inch tires it'll pull great and probably hit 65
@igokarts4510
@igokarts4510 Год назад
Briggs build??
@tristanmcnabb2741
@tristanmcnabb2741 Год назад
Nice 🙂👍🌟🎉
@williambaillie4126
@williambaillie4126 Год назад
Why is everyone using these newer motors any way? A 1968-1974 Briggs five horse will do what ever you want it too. And if you put half of what you guy's are investing into these 212 motors hell I bet the older motors would clean house... Why don't you do that once!!! Make some comparison's with that. I would really enjoy to see the out come. I'm a firm believer in those old school aluminum blocks with steel sleeved cylinder.
@Black66
@Black66 Год назад
We raced the Briggs 5 horse back in the 1980's. We ran Horstman billet parts, Tillotson double pumper carbs on Methanol. I have some picture of the karts in the community tab on the channel.
@kevinjohnson9372
@kevinjohnson9372 Год назад
I'm 200 pounds I have a non hemi 212 with rod piston fly wheel and vm22 pulls 7k at 65nph the 0to30 probably isn't great but a torque converter will fix that
@JayMoney-p4e
@JayMoney-p4e Месяц назад
What sprocket setup and rim fit on bonanza?
@kevinjohnson9372
@kevinjohnson9372 Год назад
Did u up grade the internals on that and swap the cam 7200 is gettin
@Black66
@Black66 Год назад
No, stock internals except for the flywheel. It is fun pushing the limits of these engines. That's what the channel is all about. Testing stuff. Thanks for watching!
@alexanderarteaga7560
@alexanderarteaga7560 Год назад
What type of seat do u have and what Inch
@markiemane02_yt39
@markiemane02_yt39 5 месяцев назад
Where do you get your clutches from
@TheBiliken
@TheBiliken Год назад
Can you put up a link to that clutch, will it fit on a hisun 196 like on the Coleman ct200u?
@Black66
@Black66 Год назад
The link for the clutch is in the description of the video. If you have the 196 with the 16MM shaft You can run the clutch with an adapter like this one www.amazon.com/gp/product/B07Q1NBTL7/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
@TheBiliken
@TheBiliken Год назад
So I just got one and noticed the chain size is 35. The chain size for a Coleman ct200u is 420 right, so I will need a different chain and rear sprocket right? Also what size rear sprocket should I run 50 or 44? More top speed and some torque.
@williambaillie4126
@williambaillie4126 Год назад
And if you really want some RPM go get yourself a Wisconsin Robbin motor, needle bearings on the rod and crank shaft will put you in a new place all together.
@Jasonkartracing
@Jasonkartracing Год назад
Got a question I have a Coleman ct100u with a 212 and I want to install the GPS front suspension I called them and they said it want fit but in there comments 2 people said that it bolted right up. The head tub is just a tick taller than the motomax head tube any ideas
@AnGryCruizer
@AnGryCruizer Месяц назад
So no billet flywheel lol😅...yet
@trucker2b
@trucker2b Год назад
Rear to big if u want speed
@Black66
@Black66 Год назад
I was able to hit a little over 70 with this gearing. Check it out...ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xV8i59aGUao.html
@FSEVENMAN
@FSEVENMAN Год назад
I have a stock CT 200 X , I think it has a 50 tooth rear sprocket everything else is stock what if I put a 40 tooth rear sprocket and left the Jack shaft on what would my expected top speed be and what is your opinion of that set up?
@Deucealive75
@Deucealive75 Год назад
If your stock engine is governed to 3600 RPM you would only gain about 5 MPH with a 40 tooth. Black66 has used the 40 tooth successfully in videos. Check them out.
@FSEVENMAN
@FSEVENMAN Год назад
@@Deucealive75 thanks
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