How I Built a $1,000+ Gas Frame bicycle!! | 70cc Motorized Bike

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PARTS LIST: pastebin.com/qpwNV8hs
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(TOTAL COSTS)
$854 worth of parts currently on bike.
$914 for everything. ($1114 with fork) (Including misc like brake fluid, didn't use parts, etc.)
$2124 whole motorized bike.
Shipping not included.
Will update once I add more
tags (ignore)
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#motorizedbike #moto #motorizedbicycle

[@trentbikes]

Why I don't recommend pre-built bikes: facebook.com/groups/577097226728408/posts/1073667470404712/

[@DannydeGalicia]

I'm so glad i wasnt going past 20 on this case. My head slammed on the pavement with a motorcycle helmet. BILT helmets rock man!

[@jjczornomor]

I like the way you keep everything real and show pretty much what’s involved in each step. The breakdown is good especially when you run into those little snags, you show that too which to me lets everyone know what to expect and what it actually takes to make the whole setup work and look correctly. The added little comments are also pretty funny but again keeping it real. Thanks for the tutorial and every post you’ve made. Especially the different engines and the expectations of each one. 🤙🤙

[@trentbikes]

Appreciate it

[@skipstalforce]

Glad you got the Bike. You're right, to go over 40 you need a purpose built frame for safety. That was sick when you passed the Harley! eAT YOUR heart out ERT

[@trentbikes]

Haha

[@trentbikes]

I forgot to add that I will upgrade to gemini wheels in the future. At least 24". $380 a set.

[@ozule1782]

Glad you took my advice on using the PWK instead of the PZ carbs.

[@justanothermotorizedbikech5138]

Another awesome video brotha. Thanks for sharing

[@2StrokeMoto796]

Lol when you passed the motorcycle awesome ride brotha 💥💥🚀

[@trentbikes]

Haha

[@Matthew-wj8cm]

Amazing editing. Had a good chuckle on the ,,Brother ughhh" great video man

[@trentbikes]

Haha ty

[@gnorman-ct2lt]

Instead of using a chain tensioner on the pedal side you can shorten the chain by using a hammer and a really thin flat head screwdriver to pop one of the links off.I grew up poor so couldn't afford the right tool .Just tap the flathead between the link on both holes until it pops off and when you get it to the right size you can use a master link or just pound one of the links back on the way it came off.

[@trentbikes]

As you can see in the video, I cut it to length. I left some slack on purpose because I swap sprockets and adjust the wheel axle position.

[@Supavape]

I appreciate the work put into this video and your custom bike. Much luv man. Great work.

[@trentbikes]

ty i appreciate that

[@Treythebikebuilder]

Love the vids keep em comin!!!

[@a.m.bgarage.everydayprojec9665]

This is an AWESOME video. Great job.

[@trentbikes]

Ty

[@GPMAX01]

Best motorized bike and content channel!👍🏼. What pipe did you end up using ?

[@trentbikes]

Rmh minarelli pipe

[@mikemiller3303]

Looks awesome brother at the time I couldn't afford a felt faker ao I got a zada screaming demon v2 and your right the frames are a little beefier but go look what DHL put on his screaming demon and I only had to pay 350 for 3 bikes because they couldn't tell me how to fix the pin hole in the gas tank so they gave me another one and it was the same I didn't even know at first how to fix them so I went on line and talked to someone that builds gas tanks he told me about red coat tank sealer and that's why I have screaming demons with mag rims I've never had any problems with. Yeah I had to order another piston for my athina as well I put a window in the piston and she started frying my coils down as the magneto even put in a parmakit cdi same thing I think it's putting so much fuel into the engine it's straining the coils I don't know so going back to square one be safe brother and enjoy your bicycle I know there not cheap either

[@yougod7253]

Dam Nice. You got skills.

[@JoshMo1993]

I like your style!

[@trentbikes]

ty

[@dcclaps8603]

What makes yours sound so clean and rev nice compared to mine

[@wackedoutdude]

If you ever struggle with chain length buy a 1/2 link chain. Perfect for single speeds.

[@Frokul]

What manifold can i use for a pz20 on a zeda 100 because the one it came with doesn't clear

[@loud.p500]

also just an fyi, break clean eats brake pads. kinda contradictory but only use it on the rotors

[@trentbikes]

oh, well I was told to do the same to the pads. Interesting.

[@loud.p500]

@@trentbikesat least thats how it is on cars. Bikes may be different, ive never tried

[@trdoge0737]

Yo man nice video, love to see minarellis out in the wild, especially hauling ass. How is that runleader tach working? Got a second one yesterday and temp gauge doesnt work anymore, does yours?

[@trentbikes]

Ty. I actually had the problem with my first run leader tach. For some reason when I used it on my minsrelli it started acting very weird and glitchy and whatever, only when my engine was running, even with either one of the temp sensor or the wire hooked up. Only. If I disconnected both it works fine. Over time it eventually died. No, it'd not the battery. Bought a new one and from now on I wrap around 2 turns at most maybe 3 (2 works just fine) right before the plug boot. And I keep all the wires away from the hv cable. Seems to work fine now

[@DannydeGalicia]

Hey try Schnorr washers or Nordlock. I think they will hold better? May not because to space the difference to the bolts thoutgh...

[@thewaffle3945]

I might be blind but can u tell me the name of the muffler parts names and also if i put to mine bike that oko intake will it work better than hp ones? On hp i had huge lack of power

[@trentbikes]

I bought a piston replacement for my Athena sport. I'm going to attempt to go over 65+ maybe on 32T. Anyone would like to see that? Also let me explain more about the issue at 9k rpm (with my 70cc 47mm vertical iron minarelli at least). Like I said in the video, it runs fine up until 9k rpm and starts losing power, starts running lean (or at least it seems like it). I remember this happening even before it was ported, when I first got it. On my beach cruiser with 50cc jog pipe, on 36T even 40T it would top out 9k rpm. Well... I'm not sure if it did the same thing, maybe a little, but it definitely topped out around 9k rpm. After I ported it, I went over half throttle and when it started "topping out" 9k rpm (same issue, losing power there) then I noticed it kept building up rpm slowly. From 9k to 10.3k rpm. I kept going while running lean at almost WOT (got carried away) and it blew. (either it was running too lean lacking oil for the lower bearing of rod or it couldn't take 10k+ or both). While I did try everything, I tried different jetting from 130 to 165 main jet and still happening (despite too rich, sputtering when trying to take off then finally taking off etc.), improving fuel flow of the petcock by straight drilling through it, drilling a hole in the cap which both helped a lot improving the flow, like a lot. Still happens. I go ahead and literally drill through the fuel lines of the carburetor, from inlet, to the long line (by drilling through the brass ball, then sealing it later), to the fuel valve hole (and cleaning it up to make sure it doesn't leak), that's all, didn't fix the problem. I'm using PWK21 btw, $30 on amazon (clone), and NIBBI 19 with air filter etc. ($45 on amazon, clone?). Since they're cheap I guess I'm just gonna go ahead and drill the vent holes wide open. Even if I buy a real carb, I think this might still happen. Or even Stihl carbs just H and L tuning, this might still happen? I think it's just this Minarelli tbh. I have no idea at all. Maybe it's my porting that I did? Yes it's the same Minarelli that I still have, I re-honed it and replaced the piston and rings. Also, on my Athena sport from what I've experienced, it went up to 12k fine, but did run a little lean up there I guess since I hadn't fully tuned it. I have no idea what's happening at all. Let me know what you think thanks. Honestly I'm about done with this minarelli. While it's still very strong but doesn't go fast, I can still keep it for, idk, popping wheelies and snow riding or whatever on bigger sprockets.

[@a.m.bgarage.everydayprojec9665]

Heck yeah, just DON'T blow it up again. lol.

[@trentbikes]

​@a.m.bgarage.everydayprojec9665 God I hope not lol.

[@jmrides777]

The faster you go the more complex on how every component of your build should work together. That's the neat part about this hobby....figuring it out patiently. As your builds move faster you're going to require racing components. And all those little subtleties come into play. It's the little details that make a BIG difference in the 10k+ rpm range.

[@trentbikes]

@@jmrides777 Yep. I knew that more rpm = more difficult to prevent it from blowing up quickly. Stock china cranks should be able to take 10-12k rpm, as long as it's not running rich, too advanced timing (pre-detonation or close), not too small squish gap (otherwise piston hitting head), and also apparently not lugging the engine at lower rpms. I really hope it wont blow up again because I might not get lucky next time. Kelly or rdm cranks are recommended as they can handle a lot more up to around 15k rpm, much tighter fit pin (so it will be harder to go out of true etc), I'm just so skeptical about buying them because what if it happens again even if it was running right? I know 2 strokes dont last very long, but I'm talking after only a hundred miles or something like that. Lower bearing blows, and now what? $200 down the drain for me.

[@Aidon420]

One thing I regret doing with my frame is using that por15 in the gas tank barely a summer of riding and it started to peel

[@KOHighlightReels]

I'm your 995th subscriber

[@loud.p500]

to be fair those 2.75l cdh bikes cost $270 which is way less than any other gas bike

[@trentbikes]

Yes but they look like shit and definitely sketchy. Not even worth it, better off $600 prebuilt felt faker bikes.

[@sjivanov5564]

Hey, this baike is so beautiful !

[@trentbikes]

ty

[@AceBase5]

I’ve only had a 49cc 4 stroke so far I’d be cool going 45mph lol

[@Matthew-wj8cm]

I'd like to see a china doll of some sort. Phantom 85 maybe? I love my Phantom 85 chop top😊

[@trentbikes]

Phantom 85 isn't really a chinadoll imo. It has a chainsaw cylinder on it, or at least a clone/casted by chinadoll manufacturers, copying a ms460 I believe

[@Matthew-wj8cm]

@@trentbikes yeeaaah. I got a phantom 85. One thing I really like is the bottom end torque. But it overheats

[@trentbikes]

@@Matthew-wj8cm I believe it uses a MS460 top end, or at least a clone of it. No surprise there. If you run it lean it will obviously run hotter. Keep it below 300-350F. Phantom 85 are known to blow up because it uses bushing instead of needle bearing for the wrist pin, or the crank pin, iirc.

[@Matthew-wj8cm]

@@trentbikes mine is a later model V2 with a 12mm needle bearing si no issues there. Just the coating is poor quality and it's flaking off. Might give the Athena Sport a try If I can find a cylinder kit and spacer cheap enough

[@trentbikes]

@@Matthew-wj8cm athena sports can go up to 12 to 13k rpm. Depending on pipe carb etc. Mine topped out 12k once. 11500 easy on 36T. Just gotta make sure to build your motor correctly, run correct squish gap, avoid advancing timing too much, buy treatland CDI (safely rev to higher rpm, retarded curve up there) or b0r3d's adjustable cdi (svm-bikes.company.site), and make sure your crank is balanced and trued. I'd suggest Kelly Cransler's billet steel crank that should handle 15k rpm. Oh and I would suggest you upgrading your clutch lol they are strong little beasts.

[@blueQC]

That is cleeeeean, definitly a better hobby than cs lmao.

[@trentbikes]

Ty

[@rcadventures4342]

Nice build looks awesome, great combination of parts the bike sounds & idles nice. Those brakes should stop really good if you could put it on the rear also you’d be set. I don’t like chain tensioners why not shorten the bicycle chain and get rid of that tensioner also…

[@trentbikes]

yeah I will put a rear brake on it next month when I get money.

[@trentbikes]

I didnt want to shorten the pedal chain because I tend to change sprockets and adjust the wheel axle on the dropouts to tension the drive chain. Chain tensioner on the pedal chain is fine since it's only for pedaling.

[@rcadventures4342]

@@trentbikes oh ok, really nice job on this bike, I’ve had my BBR F ZERO for 3 months and love the clean looks of the built in fuel tank and stretched style frame…

[@kylep3764]

Hey just wondering if you have a video about all the mods you've don't to the motor itself? That thing rips great for a zeda! I have a phantom v3 on a 26" cheap frame and a 34 tooth rear sprocket.. I weigh 250lbs and was able to hit 42-43mph on flat pavement. Then I ported and matched the intake and exhaust ports and now I can touch 50-51mph on flat ground from just that and adjustment to my carb needle but totally stock jet with only 87 octane.. i can get almost 55mph and better acceleration with 93. I plan to mix in a little nitromethane soon just to experiment😂. But I want more... I'm researching about putting a sthil ms660 big bore kit on it.. they have the same stroke of 40mm but the big bore is 56mm where the stock phantom is 52mm.. so it'll end up as a 98.52cc. I'm always interested in other people's builds tho, especially when they haul ass like yours!!! Also I'm trying to find anyone in western Massachusetts or Southern VT and southwestern NH to ride with if anyone reads this from there!!!

[@trentbikes]

Zeda? It's just a minarelli

[@romeoreponte9588]

Cool bike…fast

[@jmrides777]

Holy smokes, great job on your build bud!!! And you got some editing skills bro! I wanna see this build hit 65mph....in a safe setting of course.

[@trentbikes]

Thanks

[@jmrides777]

@@trentbikes I gotta watch it again.....😎

[@dean5485]

its that built in tank petcock is to small to deliver efficient fuel drill out change it i had the same issue

[@trentbikes]

I already improved the fuel flow, it flows so much better, as I mentioned in the video. Didn't help though.

[@leonardarola]

Very good indeed. Wonder what is going to happen to you when he comes around.

[@trentbikes]

wdym?

[@leonardarola]

@@trentbikes we coming out of the shop this spring bro. Wanna play?! your bike is lovely thou. Treat her good.

[@trentbikes]

@@leonardarola where do you live?

[@gavinveinot3046]

Hey man, love you videos! Don’t know if you have explained in another video but are you fully deaf? Or do you still have partial hearing? Keep up with the good content ❤

[@trentbikes]

Fully with cochlear implant

[@dattstoneddad3089]

Where did you put the temp sensor

[@trentbikes]

Runleader on anazon

[@2strokezoomies]

Lmao 0:06 I understand this 😭🤣🤣🤣

[@2strokezoomies]

1:27 another good part 😂

[@2strokezoomies]

2:18 😮

[@2strokezoomies]

3:03

[@danajett]

No farting plz 😂

[@MotorizedMitchell]

Great job on the bike 👍

[@trentbikes]

Ry

[@trentbikes]

Ty

[@BTBikes]

i have a question. how did you start making videos and how did you become successful?

[@2strokezoomies]

He’s doing what he does best and recording it

[@trentbikes]

I've been making videos for years. Many years. Since like 2013. Over time I just got better at making videos, I made counterstrike videos since 2017 and improving on editing and all, I have 8k+ subs on that channel. And high voltage videos on my 1k+ subs channel with pretty much the same editing style here for 2+ year ish. Here I am

[@theLyzhendricks]

5:02 in no way am i trying to be hatfull im just confused i thought u said u are deaf hpw could u hear the weird sound

[@trentbikes]

Cochlear implant

[@theLyzhendricks]

@@trentbikes very cool i just looked up and watched a vid about it im glad u can hear thats awsome

[@ArkMachine]

Still the same 9k no silencer. Made no difference. I'm totally stumped. But I'll keep digging until I find it.

[@trentbikes]

Does it sputter or anything?

[@ArkMachine]

​@@trentbikesNo just shuts off. But got an interesting reply from Smolik Performance on Facebook. Too weak of magneto and coil can cause this. Makes sense because I lost revs when I changed it. Ordered a Grubee too.

[@trentbikes]

@markmallett82 can you record it please and post on yt?

[@ArkMachine]

You bet I'll record one tonight. I hsve a snapshot of the speed if I can figure out how to post it here.

[@ArkMachine]

As you can tell I'm getting ready to start a KZbin channel. Storms here yesterday so I didn't video. I found something else stupid I did when setting the squish on my Minarelli. I accidentally lowered my ports about 3mm. I removed the thick gaskets and used sealant. I also belt sanded the spacer. Not good. Will fix this and install a 32t.

[@furmaster212]

The top end surging is most likely because you need a vented tank cap. Super high RPM its drinking so fast can't get enough air and it vapor locks.

[@trentbikes]

Gas cap is vented, I drilled a hole as you can see. I tried every jetting, tried improving fuel flow (which I did but didn't help with the issue) etc.

[@trentbikes]

9000+ isn't that super high rpm. On my athena sport it topped out 12k, don't think I had that issue. Untuned of course

[@furmaster212]

@@trentbikes Ah thought it sounded really good at the end didn't notice the hole lol, Was having the same problem with my tank frame. Have the vented cap now but the bike got stolen x_x

[@trentbikes]

@@furmaster212 I guess it's not big enough and still vapor locks? Idk.

[@trentbikes]

@@furmaster212 Also at the end even if I go full throttle it just bogs out. Somethings wrong tho

[@dustinh4175]

Never trust a fart

[@trentbikes]

🤣

[@gurustu4458]

2:18

[@2strokecarbtuningportingin187]

Great job on the bike. Check your flow coming out of petcock. If flow picks up when you remove gas it a ventung issues . Had to increase size of vent holes in gas cap. Just saying that's what I had to do.

[@trentbikes]

That's what I did with the gas cap. I improved flow through the peacock and all, even the carb. This even happened on my beach cruiser

[@trentbikes]

amos read pinned comment please

[@user-ye7vp8ll7m]

At that point is by dirt bike

[@trentbikes]

No

[@user-ye7vp8ll7m]

I guess they are pretty fun

[@user-ye7vp8ll7m]

How fast do you think you can make it

[@andreiistrate8580]

Name of exhaust

[@trentbikes]

Rmh minarelli racing pipe

[@andreiistrate8580]

​@@trentbikesThx💪💯

[@motorized_ct]

j

[@gurustu4458]

2:18

[@motorized_ct]

j