Jetson Bolt Pro 21MPH Max Speed MOD - DIY Crankset Replacement

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DIY on replacing the crankset on your Jetson Bolt Pro to reach 21MPH.
It involves replacing the stock 38T chainring with 53T! While I was able to hit 21MPH, I would not recommend it for general use. It was more difficult to pedal, and it felt like the pedal assist was not kicking in. I'd suggest around 45T for a better balance.
Jetson Bolt Pro Folding Electric Bike (PRICES SUBJECT TO CHANGE)
Jetson Refurb $249.99 - ridejetson.com/products/bolt-...
Costco $359 - www.costco.com/jetson-bolt-pr...
Amazon $460 - amzn.to/3ABCkYb
Amazon (non Pro version) $399 - amzn.to/3voJ3TK
Ancheer 500W model $550 : amzn.to/3w3cYDf
DYU Website: shrsl.com/4b1qh
Crankset: amzn.to/3KZdary Should include 53T. They sent me 43T.
53T chainring: amzn.to/3wdYa5b
Bike tool kit: amzn.to/3zTnqBS
bike chain breaker: amzn.to/3Fzykvm
1/2" x 1//8" chain: amzn.to/3Pe1Ivz
Jetson Bolt Pro review: • I BOUGHT the CHEAPEST ...
0:00 intro and materials
2:37 replace crank
14:09 test ride
16:43 conclusion

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Опубликовано:

7 авг 2024

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Комментарии : 157

@super73uk 2 года назад

Great video - Thanks for sharing! We have an 80 tooth chainring on our DYU bike - Makes a massive difference.

@ColinLeung 2 года назад

You're welcome. Wow. 80T is a lot

@super73uk 2 года назад

Yes, with the 80 tooth it almost looks like a clowns bike but well worth doing - in terms of pedalling, It's a game changer. We also have a 52v controller and upgraded motor. Turns the bike from a toy to a serious bit of kit! Looking forward to seeing what else you do to your bike... Best wishes from the UK!

@lambodp 2 года назад

I just did this mod on my Jetson Bolt Pro with a 60T chainring. Definitely don't spin out like I used to anymore. I notice the pedal assist doesn't do very much anymore due to fewer crank rotations. Also, I noticed the electric assist isn't very effective above 13mph or so. Happy with the mod and it allows me to pedal at a better cadence at cruising speed (13-15mph for me). Thanks for the vid.

@ColinLeung 2 года назад

Thanks for sharing your experience!

@loganomarpr Год назад

If you change the pedal assist sensor for a 12 magnet one it solves the issue with the pedal assist cause it sends pulses more often with the bigger chain ring. Hope the information helps

@ColinLeung Год назад

@@loganomarpr Yes, this help!

@troygardner8870 2 месяца назад

You can change the settings for how offen and where it registers In the handlebar readout

@troygardner8870 2 месяца назад

You can change pas settings in the little computer thing on the handle bars

@ColinLeung 2 месяца назад

Thanks for the comment. The model I had only had an On/off button, and throttle on the handlebar that did not allow changing the PA level.

@anonymousanonymous6386 2 года назад

48v controller 30$ Voltage booster 37$ Just boost 36v to 54v and you get 26mph with only throttle 48v controller have Cap. That handles 60v

@anonymousanonymous6386 2 года назад

I can help with wiring if needed

@ColinLeung 2 года назад

Thanks for the suggestion!

@thepeterpot 2 года назад

@@anonymousanonymous6386 yes please, make a video!!

@TheNyzzler 2 года назад

Teach me

@billygoat651 2 года назад

@@thepeterpot Fr I been looking

@egntwm 2 года назад

This is a good mod. You should know that doing this without the higher speed mod with either the Bluetooth module or the arduino board the controller will work against you and add more resistance because it wants to throttle you to 15mph. Would like to see what you could do with it once the speed is unlocked through the controller. That way it won't throttle you

@ColinLeung 2 года назад

Thanks. I appreciate the insight as well!

@jbain12 8 месяцев назад

Very informative! I have the same interests to get more benefit from pedaling, and the middle size crank your settled on seems like a good compromise.

@ColinLeung 8 месяцев назад

Thank you. Yes the mid chain ring worked better for me. Let me know if you end up doing the job, and how you like it

@jbain12 8 месяцев назад

I may try it in the future. Just got a second bolt pro so I can ride together with my wife and I won't be wanting to go too much faster than her!

@flitsies Год назад

Nice I have been thinking about changing this myself for some time. I like to do a little bit just not too much, so this might be right for me. Just a point I have noticed with the break binding it makes a big difference to the speed, I say a big difference one or two mph in my case, but my bike is quicker than this anyway. i would just like to help the motor a little if I did this mod.

@ColinLeung Год назад

Thanks for sharing!

@justonemori 7 месяцев назад

Thanks, I'm going to order that. Mine appears to top out around 13mph unless I pedal cartoon fast. That extra inch on the arm looks like it can make a difference. You should get a longer seat post if you haven't already.

@ColinLeung 7 месяцев назад

Let me know what you think after doing the mod. I sold the bike to a friend, but the longer seat post would have helped.

@GordonMcDowellPublic 20 дней назад

Nice work. My own stupid instinct was maybe 3D Print bigger gears for the back wheel, that would fit over the existing gears? Bigger gears on that back?! Doh! Looking at this... I guess Jetson built the safest ratio as I don't see how back could be smaller. And making the front bigger has some tradeoffs. But I'd not ever know that if you didn't make this video.

@ColinLeung 16 дней назад

Thanks for the comment! Bigger gears in the back would result in a lower max speed, but would be easier to pedal.

@atan0725 Год назад

Good job

@ColinLeung Год назад

Thanks!

@Visiorary Год назад

Mine's not even here yet and I can't wait to swap it to 48v or 52v!!! 48t to 12 tooth is 4:1. Should be pretty okay at 48volts. My old Giant is running a 1500 watt 26" setup on 52 volts with 48:11 or 4.3:1 Almost ghost pedaling at speed. 30mph. I don't want speed out of this little pup. Little zippy. Little bit of cute with jamz!! And my tiny cargo trailer for shopping!!!

@ColinLeung Год назад

Awesome. I'm excited for you!

@mowler8042 3 месяца назад

I bought a used Jetson bolt for my daughter and noticed the next day that the hub cover on the chain side had a crack from the previous owner overtightening the chain tension.

@ColinLeung 3 месяца назад

Sorry to hear that. You may be able to super glue, or plastic weld it back together. It may be difficult to find a replacement.

@mowler8042 3 месяца назад

@@ColinLeung oh thank you. I used JB weld and it’s like new again it was just a heads up for anyone who reads the comments to not do the chain tension too tight

@giovannicaba8202 Год назад

hi, Can I ad pedals to a bolt e Bike? Same one as in this video, a have it came with no pedal components, just a bar across?

@ColinLeung Год назад

Hello Giovanni, it sounds like you have the Jetson Bolt (non pro) model. Unfortunately you cannot add a crankset with pedals unless you swap the frame and rear hub.

@Freddi922 Год назад

Great video. What 43t chaingring did you buy? Looking for one myself thank you!

@ColinLeung Год назад

Thanks. This is the set that I bought. It should come with 53T, but they accidently sent me 43T. amzn.to/3GgFlSo

@Freddi922 Год назад

@@ColinLeung Thank you for your help!

@ColinLeung Год назад

@@Freddi922 You're welcome

@daniellereynolds4320 2 месяца назад

I’m trying to find a replacement chain ring as my original is bent but I want to stick with the same size but struggling to find a original in the uk

@daniellereynolds4320 2 месяца назад

Can you help does it just have to be 38t size to fit straight on

@ColinLeung 2 месяца назад

@@daniellereynolds4320 Hello Danielle, the stock crank and chainring are one piece, so you'd have to replace both. It's suggested that you replace with 38T or smaller if you don't want to buy a new chain. Anything larger will require a longer chain. Any square taper crankset should fit. Here are examples amzn.to/3x3TTV2

@cebedojames 2 года назад

i bought the gyroor c3 ebike. slightly more than the jetson but it can do 19mph without pedaling and has a 450w motor

@theotheleo6830 2 года назад

What's the cost?

@ColinLeung 2 года назад

Awesome. How do you like it?

@cebedojames 2 года назад

@@ColinLeung i like not pedaling so its good for me. I have the jetson as well. its basically a faster jetson.

@cebedojames 2 года назад

@@theotheleo6830 i bought mine from Craigslist for $450. I looked what selling on Amazon. The gyroor is no longer ther but the sailnovo which looks like the same thing is $560.

@theotheleo6830 2 года назад

@@cebedojames $450 was a good deal.

@deandred712 Год назад

Could you theoretically remove the chainring and attach pegs to the jetson bolt pro

@ColinLeung Год назад

Yes, if you can get the pegs to fit and screw into the bottom bracket.

@user-yn6xy1oq1c 2 года назад

Do you advise me to do this tomorrow, do the same, is there a difference in speed?

@ColinLeung 2 года назад

I would suggest it if you do not mind spending about $40. The new crank is lighter, the arms are longer, and more chainring teeth enables you to hit a higher max speed. I personally would not recommend the 53T since I did not feel the pedal assist. Around 43-45T will be more useful. I was getting 13mph on the stock 38T. I was able to comfortably hit 15mph with the 43T.

@maxring837 Год назад

Shorter cranks will allow you to spin easier without bouncing on the seat. Spinning can be easier than grinding giving you a greater range of speed pedalling only but it does take some getting used to. Jumpin stright to a big ring is probably not the answer either.

@anio6865 2 года назад

What is the amp on the Jetson bolt pro controller?

@ColinLeung 2 года назад

Sorry, I sold the bike I cannot check. I cannot find the controller rating online either

@InZayne Год назад

did you do any other speed mods? You can override the governed speed of 15.5 to 19.5 with software and a raspberry-pie board. It cost about 20 dollars and you can return the raspberry pie afterwards, its literally only used to flash the new code onto the bike. Also your gear ration is off the original ratio (non- simplified form) was 12/38. Your current configuration is 12/55 meaning you are actually producing more power with each revolution of the pedals, but you aren't able to turn the pedals as fast as you could before. You need roughly a 16 tooth sprocket to be closer to the original ration, which should make it much easier to pedal. Also i just realized I called it a sprocket when on a bicycle is actually called a cog i think. (I come from a motorcycle background) Im to lazy to correct it above tbh haha

@ColinLeung Год назад

Thanks for the comment. I didn't do any other speed mods since I sold the ebike to a friend. I heard about a controller speed hack with another board that wasn't the Raspberry Pi. That's good to know.

@hoopla2671 2 года назад

Inexpensively tricking out my new jetson pro.

@webchez69 2 года назад

It is not Inexpensive the parts alone cost about $50-60.

@selenasamuel2555 2 года назад

Would this work on the jetson axel?

@ColinLeung 2 года назад

Hello Selena, I do not have a Jetson Axle on hand, but the bottom bracket ends do look the same (square), so it may work.

@hendrickliauw5492 Год назад

What the meter apps you used it Thanks

@ColinLeung Год назад

It's called Speedometer through the Apple app store. Thanks

@ManifestGamingMG Год назад

in my opinion the easiest and in my opinion the best way to upgrade your jetson is to get a 48volt battery. since stock is 36volt and its a decent upgrade, its very cheap, your looking around $100 and it boosts the performance to around 20-24mph and if you are a small person like me. and your lighter than most, then it will go even faster. and you need to do no further mods either, since the stock controller and motor can easily handle 48volts

@ColinLeung Год назад

Thanks for sharing. I thought the max speed had to be unlocked in the controller as well, and adding a 48V won't change the max speed.

@rlanesports 10 месяцев назад

@@ColinLeung I did the controller speed hack to my Nephew's Bolt. Really easy to follow and under $25 . ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PBYxIyNncQs.htmlsi=AGQ2qbzBMIrv3H_a

@sbb526 3 месяца назад

Why do you need to replace the PAS sensor?

@ColinLeung 3 месяца назад

I didn't have to. I thought I did, but after disassembling the crank I realized I could leave the existing PA sensor in place. Thanks for the question.

@sbb526 3 месяца назад

@@ColinLeung do you know what determines if you do/don't need to replace it? I just want to be prepared if necessary

@ColinLeung 3 месяца назад

@@sbb526 The pedal assist sensor remains in place in this install, which can be seen here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KmPUrSOvctA.htmlsi=7m_iWWhc8XUKMfUW&t=502 This is another video where I talk about the pedal assist sensor that stays ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_BhtfHbxSV0.htmlsi=3Mqrr8ajGJ7QDW0c&t=135 This pedal assist sensor has the magnets built in, and they're not on the crank, so you don't need to replace them. Thanks

@MohammedM66 2 года назад

How does it do uphill?

@ColinLeung 2 года назад

It's rated to tackle 15 degree hills, but I was able to bike steeper hills with some effort with pedal assist.

@MohammedM66 2 года назад

@@ColinLeung thank you 👍

@kevinsteele2525 2 года назад

Hows the pedal clearance at the bottom when turning???

@ColinLeung 2 года назад

It hasn't been an issue, and I've never noticed the pedal scraping while turning. The steering angle is very short to begin with, and feels unstable when turning sharply.

@kevinsteele2525 2 года назад

@@ColinLeung nice just unboxed a fresh bolt pro today…. Gonna do this mod immediately

@ColinLeung 2 года назад

@@kevinsteele2525 Great! Let us know how it goes. I wouldn't suggest a 53T chainring since it felt like the pedal assist wasn't kicking in. 45T was more suitable, but it's up to you!

@dubmob151 Год назад

@@ColinLeung what if you're using the throttle control? that shouldn't require any particular cadence on the crank-

@ColinLeung Год назад

@@dubmob151 The throttle works, but is still limited to the stock controller speed of 13-ish mph. You can google speed hacks to increase the speed limiter to 18mph in the firmware, or swap the controller to get 28mph.

@bartlaterongcanada 2 года назад

How much did u spend on this upgrade?

@ColinLeung 2 года назад

About $30. I bought an Amazon warehouse crank and chainring for $22 and a chain for $7. I already head the other tools. Prices may vary.

@brianmchale6668 Год назад

Good Job, I thought 53T was going to be too much.

@ColinLeung Год назад

It was hard to pedal. I ended up putting the 45T on.

@hangingoutenjoyinglifewith2268 2 года назад

👍🏾👍🏾

@Shurko113 Год назад

👍👍💪💪💪 Hello From Russia

@ColinLeung Год назад

Hello from the USA

@sir.deadbeat Год назад

If you removed the 5 silver screws on the back of the chain ring could you install a new crank ring without changing the crank? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KmPUrSOvctA.html

@ColinLeung Год назад

It depends on the crank. The stock one does not allow the chain ring to be swapped. The 5 screws appear to hold the chain guard in place. You can swap the chainring without removing the crank one the new one I installed.

@shawnfitzpatrick2954 18 дней назад

your link to the tool goes to the sprocket and crank, not the tool

@ColinLeung 16 дней назад

Thanks for catching that. I updated the link amzn.to/3zTnqBS

@shawnfitzpatrick2954 14 дней назад

@@ColinLeung It now takes us to a relevant search of bike tools but not a specific one…

@ColinLeung 14 дней назад

@@shawnfitzpatrick2954 Oftentimes specific listings are taken down after a while, which is why I provided a link to the results. Any that have a flat wrench to remove the pedals, 8mm L handle, crank removing tool, and chainbreaker will work. Here's a listing to the cheapest set that I found amzn.to/3LEePpi

@jumpingscary514 Год назад

i want full speed in throttle without paddle😢

@ColinLeung Год назад

There are ways to program it. Some use the bluetooth module and app from the Jetson Bolt.

@hoopla2671 2 года назад

Essentially I'm looking to spend $400 on EVERY basic upgrade to make it like a 25 mph car. You know you can unlock the speed from 15 to 19 mph with adrino board. Double the range with a second battery. Then with this $50 upgrade I'll be pedaling to higher speeds with ease. Anything over 20 mph easily, with 38+ miles of range (w/o assist), maximum storage cap with a front basket and back for less than $800. Yeah I'm loving the idea.

@ColinLeung 2 года назад

That's awesome. Let us know how it goes!

@toasty925 2 года назад

Arduino board currently does not work on jetsons purchased within the last year. Apparently there is an update on the newer model’s speed controller that won’t work at this time.

@ColinLeung 2 года назад

@@toasty925 Thanks for the info, Toasty!

@benjamindalton8940 2 года назад

@@ColinLeung any workaround to this discovered?

@ansia8785 2 года назад

Don't bother with the Arduino board. I did that "hack" and I only got 1mph faster speeds. Simply replace the controller, either keep the 36V or go to a 48V battery. Some controllers support both. With the 36V battery you will get 20 mph without payload, with payload about 17-18mph with the battery topped off and 15-16mph once it goes below 90%. With the 48V you get 26mph without payload, 22mph with payload with the battery topped off and 18-20mph once it goes below 90%. You will still get higher speeds than with the OEM controller.

@normanwray1341 5 месяцев назад

Hello dear,go on throttle for on hour and see how fast you teach there so 😅😊

@robertleftwich1122 Год назад

Just thought but if I peddle hard enough I should be able to go 25 mph. Fast runners can get over 20 mph ,so why shouldn’t a strong person be able to use the physics of a motorized bike and get over that ?

@ColinLeung Год назад

I believe it's all dependent on the gearing of the bike, speed of rotation, and size of the wheel. If one of them is off then no matter how hard you try you can't achieve the desired speed. I'm sure someone could pedal hard enough to reach 25mph with this bike. Here's a bike gearing calculator to adjust desired values. www.bikecalc.com/gear_speed

@eamonmcdonough 2 года назад

At that point just buy a track frame and run a 43 13 ratio lmao. You'd get an immense increase in efficiency compared to that...I just use my bolt pros for flat main streets.

@eamonmcdonough 2 года назад

An aluminum track bike that feels like butter to pedal is around 500$+

@ColinLeung 2 года назад

Thanks for the comment, Eamon!

@normanwray1341 5 месяцев назад

Hello dear friend make your ebike motor like a ten spend 😅😊

@jby5736 2 года назад

If you do the contoller mod with bluetooth it will go to 18mph with bigger chain ring. But to get it to go 18mph with throttle only you need a bigger battery. But batteries are expensive. Do not ask for links because youtube shuts down commets with link you need to do your own homework sorry. Saw a guy add a external 36v 30ah battery. Got 18mph .With only thrittle and controller mod. Controller mod can be done with bluetooth or arduino board. Also since the larger front sprocket is spinning slower. If you want pedal assit to come on fast change out the sensor from stock 6 magnets to 12 magnet sensor. The bluetooth module can be bought from factory in china. I got one and a 48v controller. Will try it out and see if I can get 28 mph speed which 48v version of bike does out of the box. Again do your own searching.

@ColinLeung 2 года назад

Thanks for the advice!

@dubmob151 Год назад

RU-vid only allows links if you're the owner of the video, or if the link is to a RU-vid video. all you need to do is a convoluted process of posting a video short with the information contained in that, and then post a comment with the link to the RU-vid video with the links posted within. but no one would go to that trouble, so RU-vid wins. 😉

@jby5736 2 года назад

A ienyrid b2 48v 400 watt will do 28mph out of the box. Made in same factory as jetson, dyu, kugoo, and ancheer.

@alexisdejesus5771 2 года назад

I don’t know about 28mph my jetson bolt has a 350w motor I did a 48v controller it’s 22amps I get 23mph on Flat and 17mph going up hills 400w motor that’s a Gimmick.

@jby5736 2 года назад

If you watch the videos for those bikes it shows the specs and they saying it goes 28mph (40kmp). They also have a video of the factory assembling the bikes in china. I have contacted the factory in china and have ordered a Bluetooth module and a 48v controller. It plugs directly into the Jetson. No cutting of wires or splicing connectors. So headlights and cruise control still all work. Just to let you know.

@ansia8785 2 года назад

@@alexisdejesus5771 Did you keep the original motor hub or did you replace it?

@jby5736 2 года назад

@@ansia8785 I kept the stock 350 watt motor. But monitor the temp because running more amps to the motor. With this 48v controller and bluetooth module can now use their app to lock the bike. Also the headlights and cruise control still work. They also gave me a one year warranty. Cannot get that on ebay controllers.

@ansia8785 2 года назад

@@jby5736 I also did the 48v upgrade. Everything on my JBP has been replaced, except for the motor. My worry is that it's really loud and I am unsure if it's the currents working around the magnets or the gears working extra hard. Does your motor overheat?