Exhaust Showdown: MZ Bomber vs F3 Thruster + the HP Carb, for the BikeBerry 100cc V2

Putting the 2 NEW Exhausts to the Test with the HP Carburetor from BikeBerry, for their 100cc V2 Two Stroke Motorized Bike Motor.
Don’t forget the discount-JOHNBB5 5%off
Hp Carburetor-8680092f.strea...
BBR MZ Bomber-8680092f.strea...
F3 Thruster-8680092f.strea...
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Thanks for Watching!!!

[@nickturner3918]

I dig those carbs as well another thing the float needle doesn’t get stuck like the stock carbs Get some ultra grey break clean and jets an you’ll be ready to make a screamer!

[@leonardarola]

Omg , you are freaking alive. Got some candy for you kid. My van is that way.

[@JMB676]

@@leonardarola lmao, hey brother. I’m gonna be doing a update video also for my next video because some major things have happened and I would like to share it with everybody mostly all good amazing things.

[@Cavemanmechanic]

Looking forward to your updates Johnny! Ride safe buddy

[@JMB676]

@@Cavemanmechanic thank you brother

[@mrrednick81]

The main thing I like about this channel is it's mostly about practical everyday bikes not every one is trying to beat a land speed record on a motorized bike

[@JMB676]

@@mrrednick81 thanks, I mean I enjoy going fast but it’s not the end all for me. I do have a “fast” motor build coming up but for me I ride everyday so I rather go quickly but always reliably. If I gotta stop and tear my motor down once ever month or couple weeks (like I use to in the beginning) I don’t think I would still be enjoying the hobby like I am.

[@presleyfleckmotorizedbikef4285]

Hey brother I love that giant muffler the F1 bomber I think you called it that thing's sick too bad you had to modify it and put offset crankshaft but hey looks good on it thanks for the video brother I ride mine all winter long too but I also have a new solid rubber tire coming for my rear of my 7-ft Franken scooter 🛴

[@michaelbrinks8089]

@@presleyfleckmotorizedbikef4285 I'm in the- ride all winter club also....I should have bought an electric jacket last summer when they were cheaper. It uses a battery 🔋 pack that can also charge your phone if needed.

[@JMB676]

@@presleyfleckmotorizedbikef4285 I only needed the wide cranks. I didn’t modify the pipe at all. On a normal style frame I think it would fit fine cause it would have more height and angle. But my frame literally makes everything hard to do with it but it’s so comfortable to use.

[@JMB676]

@@presleyfleckmotorizedbikef4285 can’t wait to see the updates on your frankenscooter.

[@Kevhantamarshall]

Ive been watching you since u started I love your content pls keep dropping

[@JMB676]

Thank you, I’m working on some new ones after a recent break, so stay tuned.

[@Op1zilla]

👽👍🏻 Fast Squirrels an weird pipes 🚲💥💨💨💨

[@JMB676]

That would’ve been a funny title bro, damn I wish I thought of that one. lol, good ish brother.

[@Op1zilla]

@@JMB676 👽I thought it was alright✨

[@mapbike]

Ive run the SHA clone Dellorto/HP carbs on sevwral engines and have had a bike with 24" wheels and a 30T rear sprocket that topped out at 52MPH running that little Dellorto Clone carb. I personally also like to original NT Speed carbs with the extra fuel shutoff on them, great little carbs for the 66/80cc China Girl engines and not hard to get a bike to run low 40s MPH if all else is right with the ild NT carbs or the Dellorto Clone carb. people call the HP carb. For me the best overall daily rider reliability is in keeping it simple and those little carbs do that job perfectly. Another Great Video Johnnie

[@michaelbrinks8089]

Will you be riding your bike 🚲 all winter like myself

[@JMB676]

@@michaelbrinks8089 yes sir, all day everyday. It’s raining today and I ride it to work this morning.

[@michaelbrinks8089]

@JMB676 It sucks riding in 35F rain ☔ but sure better than walking.... Looking at your backyard gave me an idea 💡 You could maybe build a cheap diy tarp shelter workshop out of tarps & free wood or metal poles, if you had room. Instead of buying a $250 portable metal pole tarp shelter. You could make wood poles out of straight tree 🌲 branches about 2-3 inches in diameter, for a frame. The same way Indians used wood poles for tipi frames.... Then if you could scrounge up a metal locker, lock box, etc.. to lock your tools up in...With a $120 flux welder & a couple metal dryers. You could make a big metal lock box to lock 🔐 tools in. Anyways, hope things are going ok there 4 ya fellow motorized bicyclist 👍 If I wasn't sore AF all the time, I wanted to build a diy tarp shelter. I use an old swing set frame now often. To hang my bike or motorcycle from when working on it. Or hang parts on it to paint.

[@KB_Joys]

I use to be a big supporter of the hp, or delorto style carburators. That was until i finally tried the Bofeng. There is no comparison between the two, and i noticed big power gains when i stopped using the hp, rt or whatever

[@JMB676]

@@KB_Joys that’s funny, I find the bofang to be complete garbage. They are congestive for the motors imo. As long as you put the right jet in the hp carb I think it’s the best for a daily rider, but for me it’s a lot about the auto choke feature. I think it’s super helpful and makes the morning simple. But I do find it interesting how each person can have a different experience or opinion on the same product. In the video you can see I lost 4mph top speed using the bofang and that was with the f3 thruster. On the mz bomber pipe it’s 4-5mph lost. I get less smooth idle also and all through the rev range. Thanks for posting I enjoy seeing everyone’s opinions and thoughts.

[@KB_Joys]

@JMB676 the stock jetting on the Bofeng can be off, as they are used on lots of motors. I have about 4 RT carbs, and an Arbeo delorto clone that are straight up garbage. I use to advocate for these all the time. All you gotta do is measure the inside cavity, is it bigger than a Bofeng? Nope 🤷

[@Cavemanmechanic]

​@@JMB676properly jetted bofeng width 14 mm throat works works fine. You can increase the bofeng throat diameter by about 2 to 3 mm.

[@JMB676]

@ I get what you’re saying and the jets are definitely off sometimes but for me I find so many flaws in their design and usually just from the casting. They need a lot of small work to make them flow well out the box and I just don’t want to go through it since they have different style jets. I rather just use one of my n/t or if it’s my daily I use the hp for the choke. Those can require jet changes too of course but once they have the right jet even compared to a bofang with the proper jet I find the hp carb or old school n/t or speed carb will always out perform if given a even playing field from all my testing. They rev smoother and higher on each motor I have tried them on. I have shown it in many videos from my yd100 to bling to Tweaker and jokester. Literally so many times. I totally get your point of view cause I definitely wish those other carbs had the easy bowl drain for when they get water in them and I wish they had the much stronger intake attachment point cause those are very nice feature.

[@megamills150]

Nice one 👍

[@brucesnyder7368]

What size jets does the hp carb use? Does it use a needle to control the gas from idle to 2/3rd's throttle like the nt carbs?

[@JMB676]

The jets are the same as most oko or pwk larger carbs and same as the N/T carbs that used to come with the kits. Don’t quote me on this part but I believe they are 5mm jets but I can’t remember for sure. BikeBerry has a great selection of jets in their site and you can buy single jets and sizes that are hard to find. I bought a large variety off amazon so I had all I need from 50-140. I believe the one I used in it was the 68 but it’s been months now and just don’t remember exactly.

[@lonewolf14779]

I have to agree with you about motor from what I can see from most of the motor in the 80cc class of motort the bottom end are all the same yes the inside parts are better on some then other as am waiting on my motor kitthen I will be building it up over the winter!!!! I have a couple of thing two to you Johnny what are you using to edit your videos and 2) take the fat tire bicycle and throw out the front end wheel and all....Why as your ride you're pushing with the back so the more tread you have in the back the better it is small it the front....With the ebike I have I run a little big tire in the front as my motor is in the front...

[@VonDoe-i5i]

I wonder what my wire freedom electric bike will do to your motorized, but I think your motorized bike has a lot more range

[@animalt.v.4592]

What happened to the beach cruiser frame you picked up with the rear disk brakes? Hopefully it is under construction

[@animalt.v.4592]

I want some ideas for my beach cruiser that I build but originally had 29” wheels and I put 26”s. All I got is a coaster and the bracket for the caliper brake is not in the right location now. I wish I could figure out a disk & coaster set up

[@JMB676]

@@animalt.v.4592 first the frame your talking about is not under construction yet but will be before spring I’m hoping. As far as brakes, definitely ditch the coaster brakes since they can be very dangerous and in an emergency your first instinct will be to use them from muscle memory all the back from being a kid. Just not worth using in any situation on a motorized bike imo. For the disk brakes you can definitely set it up on any bike but for instance. My daily Jokester. It is a onyx/Kent brand beach cruiser with 29” wheel from factory. I kept the size but got threee spoke Mags for reliability tea but they have rotor style brakes. The frame was not set up for them and it took a good bit of R&D and work to get them to work how they do now. Best way I found to figure it out is get the wheel you want to use and put the disk in it and mount the wheel up like you want it to be and tighten the caliper onto the rotor by simple adjusting the caliper to clamp onto the rotor. This will hold the caliper straight and where you need it. From there, you simple start building the bracket that will hold the caliper you will need. Depending on the frame will allow to decide how you will build it. Some frames you can drill into the dropouts if there is enough meat there and other like mine you need to think outside the box. For me I knew I wanted a basket and it needed to be strong. So I knew where the caliper needed to be this way the supports were not in my way of the brakes but also I could then build offf the baskets rack to house the bracket needed to hold the caliper. My first try at the brake bracket was a fail. It looked good and seemed strong but one day (I have a vid of it) I had to slam on my brakes and the huge amount of force on the bracket bent it and broke the rotor and all the brackets I had holding the caliper. So I went back and did it again but this time way stronger and with better angles. Now mind you I do not buy anything besides the actual rotor and caliper for the project and everything else I just made out of straps and hand tools. It just time to think it through well so it’s safe. A good rule of thumb is if there is any wiggle/flex/deflection once it’s tightened up it’s not strong enough at all. It doesn’t need to be heavy or thick metal or anything like that. It just needs to be ridged and something that won’t snap under a hard brake situation. Sorry can’t help more but when it comes to brakes gettin fitted to a bike that wasn’t designed for them it’s really a frame specific type thing and needed to be engineered by the person building the bike. There’s many ways to go about it but I find reusing materials from cars or trucks or other bikes or like mine scrap metal from a guys pickup truck (my braces were from a dentist office table originally) is the best option cause one it’s cheap if not free and just looking at how a manufacturer did something helps spark ideas into you head to imitate something that was already there but with your own need filled in.

[@ExecutionStyleInc]

curious I have one of these engines as well, do you plan to deck the head, port it and add a window piston???

[@JMB676]

Yes I do plan on doing stuff to it once the contractual videos are done. I want to fix all the small things I can see that are not great with it and enjoy it on a serious level for my daily. It’s a big ish motor and it’s iron sleeve so I know it will last a long time if given a chance to really shine. What exactly I’m goin to do I haven’t totally decided yet but I’ll show it all and it’s not goin just be a quick port job. I plan on really going after it in this one cause of the built in reed block and all.

[@ExecutionStyleInc]

If you have a direct contact for bike berry tell them to make a MZ65 style pipe that shoot it behind so we can add silencers. I have this engine and want a decently designed pipe for it.

[@OutlawRC]

Don't forget reed valve if you add windowed piston

[@JMB676]

I do have a direct connection to them, but I don’t have any kind of pole like that lol I do appreciate your confidence in me but nonetheless, you could still put a pipe on this one and it would work like a silencer cause it is a little bigger than an mz 65. But nonetheless, it’s a really nice pipe.

[@derrickpearson6684]

i keep adjusting the idle screw on the clone bofeng nt carb , how to keep engine running , will cut off if i slow down or stop ,have to keep feeding gas, ive tried everything ,except jet change. bike wont just sit still running

[@JMB676]

@@derrickpearson6684 also if the clutch isn’t adjusted right it will drag it down too. If your holding the clutch will it do it or only when you set the clutch with the button.

[@derrickpearson6684]

@@JMB676 I start peddling, and then I drop the clutch, it starts on choke , when I turn the choke down , motor just won't stay running, I have to keep giving it little gas for engine to stay on ,When I off the throttle it will start to wine down, if I either slow down or brake for too long not moving the motor will cut 📴 and I have to start all over again. I believe the idle screw 🪛 in keeps it running by feeding it consistent gas without my control, that's without the choke on. Engine / motor Will die quicker the more the screw the idle screw out or back off the carb.

[@JMB676]

The idle screw only changes the amount of air it lets in by holding the slide up or letting it down. Only way to fix it is to lean out the needle by moving the C-clip up a notch at a time till it runs right.

[@derrickpearson6684]

@@JMB676 ok thanks a bunch 🙏 going to try it out again. Also any way to bend the stock 🍌 pipe without tools like 🔥 torch or a vice 🗜️

[@JMB676]

@@derrickpearson6684 to be honest when I need to tweak the stock pipes I put them in a sewer grate cause they are heavy or a block of concrete with a hook in it at the local construction sight. BUT the pipe will kink VERY easily. So it you are trilling to bend it more the. A few degrees you stand a great chance at kinking it and ruining the pipe. Other than that the only way to “bend” the exhaust pipe is to cut and weld it. Good luck

[@OutlawRC]

What secondary support do you have or can you use for the mz bomber pipe

[@JMB676]

@@OutlawRC there’s a tab for one of the clutch cover bolts to be used. I didn’t cause honestly imo it doesn’t really need it cause the hookup is super solid. But it is there if you wanted it.

[@derrickpearson6684]

🚲 Please help if you can Adjusted screw 🪛 on carb ,engine wont stay running , will die if at stand still ,or slowing down ,have to keep hitting throttle gas ⛽ to keep on ,bike wont sit and stay running, stock out of box , china doll ,clone bofeng nt carb ,nice & tight ,rubber washer in carb

[@JMB676]

@@derrickpearson6684 the needle needs to be adjusted. You need to raise the clip on the needle. There is a very small C-clip on the needle that’s in the slide. Just get pliers and raise the clip one spot at a time till it stops four stroking. You will more then likely need to loosen the idle screw again if you tightened it to try to stop it from stalling. Easy fix and only takes a few minutes to do. If you need help just message me on messenger under my name Johnnie William moser jr. I will get back to you much easier than way usually, unless messenger doesn’t give me the notification; which it doesn’t sometimes….smh. Eitherway though all you got to do is raise that clip probably 2 spots but each motor is different and where you live has a lot to do with it too. Let me know.

[@derrickpearson6684]

@@JMB676 Hi Johnnie ,good evening,happy holidays,how are you doing today thanks for the reply, I know u can be busy sometimes, I was literally 👀 watching your 📽️ 🎥 when I read your reply the " mini bike fix & 80cc motorized 🚲 build" 👍 awesome I try & learn alot & take pointers & tips from you. the 💉 is in the middle stock position do I make sure the throttle cable adjuster or connector & stopper on top of the carb is screwed all way down tight

[@1RickSanchez]

BOOO! I understand you have a deal with them, but honesty is better than encouraging poor practice.

[@JMB676]

@@1RickSanchez sorry you don’t agree and my deal is only the part not like I’m getting paid. For the average person that’s starting out or wants easy, these are easy. I also really do like the hp carb on my daily. The auto choke is totally worth it to me. Not ever bike needs to do 50mph. Some just need to be reliable and get where you’re going. Nothing I said in here was dishonest.

[@1RickSanchez]

@@JMB676 Yea. I guess you are right. You did say somewhere, something along the lines of targeting inexperienced buyers, for kids (I don't agree with selling poo parts to make a buck.. sounds like a predatory tactic to me). I suppose you are way more honest than the BBR website itself. Sorry for the negative comment. While I realize rejetting the carb is essential when changing the exhaust to have a properly running engine and this was not covered, kids brains are sponges (they can handle the truth) and while some people are lazy, most of those people dont build bikes. A kids budget would have a hard time keeping up with the BBR prices, especially for subpar products. I own one of these engines and I agree that it has lasted in its stock form longer than my other engines that were not stock however, performance parts should be just that. It would be cool if you optimized your carb for the setup and show how, rather than slapping parts on with the same tune. Not everyone needs to do 50mph and some need more low end torque to pull their weight or a trailer up a hill and desire less speed. I said what I said because people watch these things hoping to learn something and shining everything in a positive light doesn't help anyone, especially when tuning for the setup has not been done. I could go on about BBR and their selling tactics but the last thing I will say is "targeting inexperienced buyers". Maybe slap some parts on and then do some tuning to max out the setup. That is what the people want.

[@fabiotiburzi]

wow, you overpaid for that carb, i paid 10 € on aliexpress

[@JMB676]

@@fabiotiburzi lol, it was given to me brother for these videos. BikeBerry sponsors me. But if you know where to look you can find them for much cheaper and that’s how I bought them before . However I do gotta say. Even though the carbs from Amazon or Ali express look almost the same by appearance. There is some small differences between the one you get from them that make them work slightly smoother and have a lil more metal in them for more support. If you know how or where to look you can see it. Not to mention the filter you get through BBR is far superior to the other guys that come with this “style” carb.

[@fabiotiburzi]

@JMB676 i look from aliexpress since shipping is free. Btw this carb design is a clone from the piaggio si/ciao/bravo carburetor, more precisely an sha