Do Free GPS Acceleration Apps Work? Let's Find Out! 

Brent I have to say it again. Thank you for the efforts put into every Video you make 🙂

If you want a little better app, Track Addict is usually pretty good to me. Theyre probably still a lil wonky though, theyre more made to mount in cars to measure track times and such

Thanks for this! Just got my self the app

Great video man. I used this app while averaging all the runs when posting results for my aerox 100 engine. Along with that racing channel which gives you a neat graph yo show any dead spots in acceleration. Though you will need many runs to get semi accurate readings just like the app displayed In the video

mierzyłem tą aplikacja i jest ona bardzo niedokładna bo zatrzymuje czas dopiero gdy na telefonie jest ponad wartość np. 34mil itp. i w zależności jaka wartość będzie taki jest czas :D twoja metoda na pomiar w programie obróbki video jest najlepsza, sądzę gdyby do tego dodać analogowy licznik na linkę było by idealnie :) pozdrowienia robisz mega robotę na yt

I need to try this with y 4t china scoot, especially since it's running decently, it can push the speedo well past any numbers, and I weigh 330-335, the high compression airsol piston and large valve head, with mild porting, and exhaust and intake, I imagine a stock 150 runs about the same, it definitely had more TQ, and low to mid power, and needs CVT tuning , and carb tuning, probably can use a valve adjustment, but it's past due for the first oil change, I have a zinc additive, and high tac to go with the synthetic oil, with all the low end TQ, I'm thinking ear swap, until the rear pulley 'changes gears' it almost pulls the front wheel, with a near stock CVT, it only has 4g and 6 or 7 g weights, sliders, so equal to 3x 10g or 11gsliders, with a light spring, the blue. Contra spring, and seems like it could have stiffer clutch springs, I notice since it's getting warmer, the CVT needs tuning, because it's revving higher, acting different, I think it can use possibly a gram heavier weights, maybe swap in the ncy adjustable rear pulley, make it change gears a bit better, it's very pronounced now, it kinds paused, I had it before like it kinda jumped, then kept accelerating, but the engine didn't have the power to accelerate , it did great down hill slightly, I'd like to get a tru race cam, that peaks around 9500-9800 possibly 10k rpm, be at it only needs power from 5kup, it does maintain 45-50kph on slight hills now, 20-30kph faster than before, I'm thinking about swapping in my Yamaha 22mm carb, it has a Japanese 20mm on it now, it measures 22.4, 22.6maybe, the 20, is 20.1mm, better than Amazon, that 19.4!! Haha I don't know how many I ordered that was 18-19mm carbs listed as 20mm, the ncy cam does seem to be a TQ monster, runs great for 81-83cc what ever it comes to !! 41.4x 50mm, I'd like to cut about . 050" off the jug, to get more squeeze, I lightened the piston as much as I felt comfortable, trying to get it close to the stock 39mm piston, it seems to helped, it runs smoothly, alot better than the other engine!! Goes to 10k smoothly!! I have to actually watch the throttle in 35mph zones, before by the time it got to speed I'd have to stop, I wish I ported the head a bit better. Maybe rigged a flow bench, and shaved the head and or jug, the piston is about . 080-.100 in the hole, the 23mm intake valve is much better than the 18, 16/18mm valves, is a joke. The 20/23is much better, I have another head I can put my finger through, I can use a 150cc intake on it, but that a bit much for a daily! Good day 👍

Hey Brent. Great stuff. I have a question for you. Where did you pick up or make the frame brace from the neck to above the battery box? Thanks John

I don't think the GPS in a phone refreshes nearly often enough for this kind of thing. The Dragy works great, there are videos on here of people using them at drag strips and comparing the times. It's a little GPS unit with a magnet, just a much better GPS than the one in your phone. Gives you little speed/g force charts too so you can see where your trans shifts and everything. I like how thoroughly you tested in this vid btw. edit: i wrote this before finishing the video, can you tell

Oxy Powder cleanse for rider weight reduction. More power. Learning lots from the videos, thank you.

Unfortunately phone gps only updates once ever second, so the movement detection can be off by a bit. It has to estimate your finishing speed too because you may be 27 at one interval and 33 at the next. Most of the apps have a gps strength bar, so you can go to a location with good service and hopefully get more reliable results

I don't understand why your tpr 86 ride slowly...

I am using Sigma MC 1812 MOTO (50$) as the cheapest substitute for my broken speedo, it has a lot of functions, but I don't know how accurate realy is. There is many magnet driven aftermarket speedometers, also with drag meters, shouldn't they be more accurate than gps?

hello i tried a speed app to see how fast my senior mobile is my mobile is specified with 15 km/h according to the app it runs but 12 km/h can you rely on the apps or do they have a deviation from X? Or is it more of a gimmick? Thanks for the info

gears in the transmission were still the superlight ones? Its ringing out. Way too light so speed is slow. Up gear the transmission

What we need is a dyno app

want is in km/h? top speed?

Get a Dragy

Better use a dragy

I know phones are expensive, but don't worry about treating them so preciously. You have to replace them every 18-36 months no matter what.