70cc Athena Sport 57mph Motorized Bike!

[@jmrides777]

Great video bud! Damn, I want a hydraulic press now. Your vids are great man, and I would like to see you keep making them. Just a wee bit of encouragement on the ripping through rural areas close to 60mph. I love the speed too, BUT try heading out to the outskirts for full on rips. There is with less cars, traffic, houses plus it makes for better vids. All it takes is a car or pedestrian to step out in front of you at those speeds you have min to zero stopping ability with your brake set up. You're representing all of us on these kit bikes bud when you're on the road.😎

[@trentbikes]

Yeah, the road that i usually ride on, usually has less cars. I look around a lot

[@rcadventures4342]

Man that thing’s ripping nice @3:05, sounds awesome…

[@EvilClerk]

Breez you are such an inspiration and I love those RPMS MORE PLEEEEASE KEEP IT UP

[@trentbikes]

thanks

[@GuilhermeTrojan]

I love your video style, they're entertaining beyond the video subject! Keep it up!

[@trentbikes]

Ty

[@joe-x5c]

wow, superb editing... high quality camera, and a great story! nice work sir.

[@trentbikes]

thanks

[@DirectCurrent4u]

@@trentbikes Super Nice Work my Friend! That Little Motor Sounded awesome! Can You recommend a place (or link) where I can Purchase this Motor? That would be very helpful to me! Thanks again for Your help! 👍Cheers DC.

[@Ben-px3qg]

Great video man I have been waiting and refreshing KZbin ever since your last video I have been watching and rewatching all the videos and you have inspired me into buying a minarelli for California motorbikes can wait for it to arrive and keep up the good work loving the videos ❤️

[@trentbikes]

those minarellis are nice for the price. definitely port the cylinder, match the ports, to make $200 more worth it. do hone it out a little bit to avoid possible seizing.

[@burtmcgurt3584]

BRO! You are ripping!! I love it:)

[@mikemiller3303]

Dam bro you were flying lol I don't want to find the limits of my athina because I don't have a press but that's cool I know what it can do now ride safe brother

[@trentbikes]

Be careful tho. Make sure your crank is balanced and trued and that your bearings (rven conrod bearings) can handle high rpm lol. Dont run lean dont advance timing set proper squish gap etc

[@mikemiller3303]

Thanks for the heads up brother

[@trentbikes]

@mikemiller3303 of course the higher rpm you go, the more issues or breakdowns you will have, thats just how it is. It could still last longer tho if yoy vuild it more correctly

[@sebas5688654]

6:58 -- As perfectly as possible. 😄 16:32 -- That feel on bike like flying. 😊 21:41 -- You need to do calculating the compression ratio.

[@MarketBlob]

I love the power of that thing man that's sick

[@malcolmcarter1726]

Very impressive. When you hit the powerband at 7500rpm it really flies. Im building a 110cc engine at present. And thats proper cc's not chinese cc's. Im waiting for a jackshaft shifter kit to arrive. Should be fun getting it to work. Great videos Boss.

[@sleepered7692]

I doing my first start man it’s crazy Minarelli engine all running well for first I think a going near 12 000 rpm and over but I don’t going full trottle ride safe and I doing a video soon and thank you for your nice video !!! 🤘🤘🤘🤘

[@domcxz8643]

Damn. I need to balance my crank. Good video Dude :)

[@trentbikes]

and true it!

[@domcxz8643]

Will do! ;)@@trentbikes

[@titokuman]

Some tips for 2 stroke engines are, running richer always(better to run rich than lean) doing holes in the piston so it doesnt overheat and seizes, because this engines are made for forced cooling not just the air cooling and they overheat a lot, a 2 stroke engine needs to run betwen 50ºC and 100ºC max(literally 100 is the max max max max you can run it and it will probably seize) then doing the oil mix a little bit richer, like if its 3% oil put a little bit more so everything lubricates more and you will not lose power bcs the oil will go to bearings and not affect the ignition, then the holes in the piston you need to make them where the piston has surface of contact, like not on the exhaust port or intake(search in google and youtube) and the last thing is do little holes where the ring is bcs its a 1 ring piston and they are better than a 2 ring piston but they heat way more than a 2 ring, i will search the video i saw and try to leave the link down this comment so you can see it, keep this project up!! Greetings from Spain

[@WHISPERSHOT]

I can run my china engines to 220c before issues. That 100c is completely false

[@titokuman]

@@WHISPERSHOT pls learn something about 2 strokes and then talk ,100º celsius is so much for a 2 stroke already, if your running more temp than that you are literally killing your engine (also i mean celsius not farenheit degrees)

[@trentbikes]

@@titokuman My iron minarelli went up to 250F average for probably 300 miles, no issues. don't run it lean and you're fine.

[@keeganhache6667]

Also if you want your squish wider use a stock head gasket instead of copper

[@trentbikes]

the copper gaskets are maybe 48mm inner diameter. wider than my athena sport bore

[@AlShams69]

Transition of camera was crazy cool

[@joshuadulaney5559]

Great stuff man

[@mbrrideitlikeyoustoleit8436]

Nice I love my Athena sport brapp brapp

[@JMB676]

Congratulations on the new camera, I used and still have them but the hero3+ for a year probably and worked great. But I wanted an upgrade like you did and bought a hero7 black used just like you did but I messed with the settings to get better color out of it and before that I let I be stock factory settings and it worked great for two months. Then I watched a video on how to get better lighting and video with that camera from a professional photographer that rides bikes and trails and he showed how to set it up better and I really looked great to be honest. But almost immediately it started running hotter to the touch and about three weeks later it got really hot and stayed like that. Now it worked like that till I stopped using it a month later but it would get so hot it would burn you if you held it in bare hands. I have join the GoPro subscription like a year before and the one I have covers all my GoPro cameras (it’s like $100 a years) new or old, so when I called them and told them I bought a used hero7 black camera and that it was getting very hot but still seems to work fine. They said to send it back and they said it was not my problem and they would take care of it for free. They couldn’t fix the 7 black cause it’s old so they gave me a brand new hero 9 black. So because I was part of the subscription through their app (Quik) and because I registered my camera (cause it’s how I download my footage to my phone) and then they completely took care of everything even though my cameras were sell used. So if your not part of that subscription with them were they cover your cameras and have a bunch of other perk (I got it originally for the footage storage cause that plan is unlimited video storage/cloud usage). So I definitely recommend getting that subscription if you can afford it cause it paid for itself easily a couple times already.

[@trentbikes]

4k can make the cameras overheat. I stay at 2.7k now and it seems fine, with medium or high sharpness and it stillnlooks good

[@JMB676]

@@trentbikes yeah I bought these cameras to record in 4k n the new hero9 black they gave me to replace the 7 black that got hot takes such amazing videos and I was surprised cause I thought the 7 black was amazing but once I seen the side by side it was surprisingly better. But I was told that the 9’s heat up too but idk I feel if the camera is sold with those options it should just work. Especially if it’s a brand like GoPro. Either way best advice I can give you is just do you brother. If you like recording in 2.7k then do it cause most people can’t tell the difference and most importantly is you are happy doing since your the one that is doing all the work. Keep on keeping on brother.

[@trentbikes]

@@JMB676 Yeah tbh i dont think anyone can tell that much of a difference between 4k and 2.7k. 2.7k still has good quality with settings tweaking, why bother use 4K at this point, I render my videos in 1440P anyway (not 1080P because it looks trash on youtube, youtube compresses it), my camera doesnt have the 1440p option on 16:9 as far as I can see, so 2.7K it is. I think 1080P is noticeably worse, but havent tried that out. 2.7K is still decent, and doesn't heat up as much, use up as much battery and storage as 4k.

[@JMB676]

@@trentbikes yeah I had nooooo idea how much more storage recording in 4k would take up, I was burning through SD cards like crazy on longer recordings. But I can tell how much clearer it looks to me on my phone and tv when I watch it there and it’s definitely worth it. I still edit everything on my phone and I know it can do it all in high res but hopefully by end of this year I’ll be getting a new Mac mini to elevate my skills more soon. It all takes time and learning it all by teaching myself just takes time, especially since I have no idea what I’m doin lol.

[@sleepered7692]

Nice man Im near of my first good job man !!! But I see another time your green position on your bike !!!!

[@CGBike796]

Good video bike sounds awesome

[@trentbikes]

thanks

[@jasonburque]

Haven't put mine together yet.. very valuable information 😊

[@mybikes1970]

Nice 😁👍🏾🚲💨💨💨💨💨

[@theLyzhendricks]

Man u just keep having problems hope u can get one running good reliably

[@2strokezoomies]

The one hand on first start 😫😫 I’d hate to have a bike lock up on me with one hand 😅

[@trentbikes]

Im not going fast one handed anyway. Funny thing is, that 2 stroke tuning guy that keeps saying im going to wreck and end up in a hospital, as if he isnt posting videos of him doing wheelies on a dirtbike, and going 60mph in curves, ONE HANDED, on a motorized bike. Engine loses power or seizes up on him, hes done. Bro is slow lol

[@2strokezoomies]

@@trentbikes 🤣

[@This_guy007...]

You're a freakin mad man dude haha. Nice job!

[@Weakmotorcomike]

You're ripping! Are you still in Washington? I'm in Seattle and ride often

[@trentbikes]

yes

[@Weakmotorcomike]

@@trentbikes where are you located?

[@trentbikes]

@@Weakmotorcomike spokane

[@Weakmotorcomike]

Dang I never been over there, you're probably the only gas bike out there

[@trentbikes]

@@Weakmotorcomike Probably lol. I've never ever seen one 10 years of living here. Well, in the valley, 22 years of living in the city. Ever. Not even minibikes lol. I have an old friend and his friends who rides minibikes.

[@joshuamoon8442]

So can you send a link below where you got the Athena cylinder kit!!! Please and thank you

[@trentbikes]

Amazon. Search athena 070100. I bought it used

[@joshuamoon8442]

@@trentbikes thank you buddy appreciate it a good job on your bikes man they look awesome and they sound good. Two thumbs up.

[@trentbikes]

@@joshuamoon8442 sorry I meant 070100! 070200 is the horizontal one, not the same as mine, doesnt have reed valve cage built in. 070100 does

[@adam_-adam]

Hopefully this will be helpfull in some kinda way' its just somethin i noticed when i was building my engine. Its the nuts that goes on your clutch and sprocket shaft. Theres not much thread bite on the threads of that nut that grab onto the shaft so what i do is take nut to grinding wheel and grind off that maybe 1mm of space on each side of nut that doesnt actually have any threads and grind till it comes down to end of threads, if you look close the threads dont come all the way to the end, there for that extra space pushes the nut more off the shaft and gives you less bite, if you file both ends of nut you can get like a whole nother thread or even like 1 1/2 ;] more, i just shave the other side of nut for the clearance for tge saf clucth so it dont scrape on that side either.

[@justanothermotorizedbikech]

Crazy guy!!😝😝😤🚴🏼‍♂️💨💨

[@trentbikes]

Hehe

[@sammorgan2390]

Good job

[@jordandods5249]

Hey bro I've bought the same kit as you from cmb, did the crank seals already have the seals removed on them ?

[@jordandods5249]

Also to add I saw on your first video you had issues with your chain I'd say yours would be the same as mine the sprocket teeth were sqaured of I took a dremmil and rounded them off seems a lot better now

[@trentbikes]

Yes, they did

[@ScootTunin]

It would be interesting if you put a high end minarelli cylinder on a bicycle engine. 🤔 if you do it would be crazy powerful.

[@BrianBailey-r5x]

I need that set up please respond to me what's the h set up

[@AlShams69]

I was using an impact on my motor mount and it went from being super tight to like super lose did I strip it?? 😢😢

[@trentbikes]

what do you think?

[@jawauncobb]

How much you charger to rebuild a 90cc fire storm o need it for work and such please let me know sir thanks a lot

[@trentbikes]

Ask experienced builders not me.

[@jawauncobb]

@@trentbikes ok will do sir

[@exgtt2061]

Is that clutch slip or wheelspin? Porting the cylinders going to feel like a turbo on that thing.

[@trentbikes]

Wheelspin? Huh?

[@trentbikes]

don't port the athena sport (besides intake skirt) or really any expensive cylinders. ports are good as it is

[@exgtt2061]

@@trentbikes I’ve had great success porting the Airsal T6. It’s a brilliant, cheap, blank canvas. I highly recommend

[@adam_-adam]

Out of the stage 6 minarelli and all the other cylinders like the minarelli , what would you say is the best one for longevity? I havent tried a aluminum one yet but heard they are great, ive heard of cold seizures from cast iron minarellis but so far havent experienced one with mine, never blew a amazon minarelli and now have a stage 6 one, but now kinda curious about this athena sport, what i do like about the cast iron thow is that i heard if you carry a drill and ball hone on you and some sand paper you might get lucky andnjust beable to do a quick hone and sand the scuffs off the pistin and throw it back together and slowly break it back in if you seized it", not sure if thats true but kinda sounds true.

[@meskalin64]

3:10 sounds like the clutch is slipping. To much torque for your clutch or maby the cable is to tight?

[@trentbikes]

I'd know if the cable was too tight. The spring wasn't tight enough.

[@2strokezoomies]

Lmao 1:33 😂😂😂

[@trentbikes]

Lol

[@trentbikes]

I do a little trolling

[@DirectCurrent4u]

Hay Trent do You have a link to the HD clutch spring? I have only found one in a complete Minarelli Motor. It measured 5mm and all the stock one measure 4.5mm. Your channel has came a long way and Your builds just keep getting better and better. The Best MotorBike content on KZbin! I have learned a lot from watching Your videos.👍

[@trentbikes]

Rdmanu or bikeberry

[@DirectCurrent4u]

@@trentbikes Thanks Bro!👍

[@MrZenzationz]

My ms460 saw builds do 57mph easily and I build them for dirt cheap I actually have an extra one if you wanna test one

[@trentbikes]

Thatd be nice

[@gamyfps7393]

Whats the diameter on that spacer plate

[@mrdumbfellow927]

Remember, LEAN is mean but FAT (rich) is happy.......

[@trentbikes]

yep

[@danajett]

So you are really going that fast with no front brakes? Scary, Do you have disc brakes in the rear, asking because I ordered a Athena Minarelli and I have a townie Electra with regular brakes

[@trentbikes]

I have a front brake...

[@trentbikes]

I have both brakes on that bike lmao

[@keeganhache6667]

The cylinder made no difference in top speed for every tooth count on the sprocket it’s a mph. So 4mph difference and also 4 tooth difference on the sprocket. I’m sure it’s more powerful up to that point tho

[@trentbikes]

Wdym

[@keeganhache6667]

@@trentbikes dude read my comment again

[@trentbikes]

@keeganhache6667 i woke up and got confused...

[@keeganhache6667]

@@trentbikes all I’m saying is the sprocket change is what increase your top speed for the most part obviously the Athena cylinder helps

[@trentbikes]

@keeganhache6667 yeah i know lol. 12krpm on 10/40 26" would be 56mph (clutch probably slipping). 10/36 63ish i believe. I was gonna try 32t but never got to

[@mykebrown3473]

How to make it go that fast

[@mykebrown3473]

Where are you located I want you to be my mechanic

[@jessesuttie4240]

Cool vid bro all da way from queensland aus

[@trentbikes]

ty

[@KillerProphet-b2z]

I use a Japanese bearing.

[@trentbikes]

how many rpm have you gone so far on it?

[@KillerProphet-b2z]

I got 12,400 out of it. OKO bearing. @@trentbikes

[@jerryjames4044]

Awesome bro what tooth sprocket may I ask

[@trentbikes]

40T for 50mph+ 36T for 55mph+

[@EdKennedy-ws8wu]

Any info you can send me on this motor would help alot

[@eumid]

When piaggio

[@trentbikes]

Idk

[@LorenzoHerrera-wt5uj]

I live in California how much you sell me a "built motor" for ....like what's the price range

[@trentbikes]

I wouldn't recommend having me build one for you, since I'm still new to the hobby and still learning, only had 3 motors including an avenger 85. I make mistakes then and there.

[@leonardarola]

Damn, even my mom said it sounded hard.

[@trentbikes]

did she lol

[@45zuko]

Super Buildup

[@geph13]

bro is legit going highway speeds

[@trentbikes]

haha not even close

[@ELISRACINGTEAM]

You welding are to cool make the welding hotter. Those engines broke most likely due to the mecanic, welding bacalao. Also no because a engine hit a high rpm you goin fast ……..

[@trentbikes]

you did not watch the whole video or at least at the end. welding had NOTHING to do with it.

[@ELISRACINGTEAM]

@@trentbikes we nkow the welding have nothing to do with it . but still you welding is to cool use a hot temp you be happy

[@MRONETEN]

I think your bike would go a lot faster with a 32 tooth rear sprocket as I have seen people use them and get close to 80 mph on a 110cc 2 stroke china doll engine

[@trentbikes]

those "110cc" cylinders are trash from what i've seen, and actually no I was only able to hit 60mph on 32T on the same carb. Months later, with a pumper carb and better tuning, I was able to hit 62-63 on 36T, 65 on 32T, 76 on 28T on a slight downhil.

[@yougod7253]

Get a sproket hub adapter. Rag joints arent meant for these speeds. Remember crashing on pavement with traffic is not a option. You could lose a finger arm head injury or worse because some of your spokes failed. No gloves your on a death wish dude. Accident waiting to happen.

[@trentbikes]

I built a felt faker bike a while ago. With wheels that use 6 bolt flange hubs.

[@TheCORC964]

Looks loads of fun, shame here in the uk it’d get impounded by the boring brigade in a matter of minutes. Good thing with e-bikes is the police are clueless and as long as you don’t ride like an idiot they don’t bother stopping you.

[@CoryLeffler]

It’s like a fucking VTEC

[@mykebrown3473]

Let me send my motor to you and pay you to fix it up for me