How you got your TOP SPEED Results POLL

The Air Cooled Chinese PB forum is the most active forum where mods and top speed results are talked about, so I decided to post a poll here.

I see alot of riders here saying that they are getting 35, 36, 37, 38mph and so on, and so on, and I am just curious on how some of you riders get your mph readout results.

Since getting top speed results is a controversial topic, let us all find out how you achieved to get your top speed in MPH. Post your top speed result, what method or device you used to clock your top speed, and what you had on your bike to get you there (mods, gearing, stock, etc.)? And I know weather, elevation, fuel mixture can differ when comparing results so keep that and mind also.

I have been doing alot of tuning and gear testing on my Blata 2.5 and clocking my top speed with my partner in crime's (Hayabusa) stand alone portable radar (just like the one pictured below). And I really believe it is one of the most accurate radars to clock your top speed. You can clock your speed without having someone holding it. Just place it down in the test path and zoom right by it! It is highly visable when riding past it, especially at night! I highly recommend it to every PB rider, race team, racing org. who is in need to find out their accurate speed readout!!

This little device should be mounted somewhere at every PB race track!!

When u put it out at rhs, on my cag i hit 32 on that radar.

i always try to find those big old machine things that tell you how fast you are going....just to fly by them to check my top speed.

I bought a cheap "huffy" branded digital bicycle speedometer from Kmart, measured the circumference of my wheel and programmed it in. Using this I measured 51kph (31mph). Smoother road would have helped, I was bouncing off corrugations.

i got my mine from a schwinn speedo

I also forgot to mention that incline/decline ground levels, wheel/tire circumference and tire pressure can play a big part in getting top speed results also.

I agree with you. I bought this radar for RC's about 4 1/2 years ago and found on the box that it can be used for Go Karts, etc... thought why not pocketbikes?

as for testing speeds, I think I've almost tried them all!

-Portable Stand Alone Radar (aka non-hand held)
I found this one of the most accurate ways of clocking your speed which uses the same technology as the hand held radars the cops use. uses 6 AA batteries and reads objects within 15 to 20 feet.

-Radar Gun
had a cop friend clock me with his hand held radar, accurate!

-Street Sign Radar (Traffic speed monitor found on the side of the road)
this is the same as the "portable stand alone radar" that I own, its just bigger! accurate!

-Stop Watch Method (timing distance in feet measurements)
had a buddy of mine that used to ride pocketbikes with me along time ago. found this accurate but there is a give or take with reaction time on the stop watch but close enough!

-Schwinn Speedo
I found this close, if you calculate wheel right and take in to consideration when you sit on the bike the tire isn't its full circumference, plus tire pressure, and all most all cag wheels aren't balanced. its usually about .5 - 1.5 mph off.

-China made speedo found on a stock pocket bike
didn't really mount one on my cag or blata (don't know if there is an actual way?) but I rode next to my friends stock X1. WAY OFF! showed 60mph (the needle was at max) actually going 25mph with a real radar LOL.

-GPS
never tired it with this one... no comment

-Riding beside a moving vehicle or motorcycle
known that a moving vehicle (car/truck/motorcycle) speedometer isn't accurate, give or take 5 to 10 mph and running along with that vehicle side by side is even worse. it isn't a good way to get a consistent speed (IMO) you can claim that speed all you want but wait till you get clocked by a radar!

all china speedo are actually mesured in kph! not mph which that advertize
on the speedo

if thats so, 60 kph does NOT make 25 mph!!! its not measured in kph, I don't know where you're getting your info from??? china speedometer are toys for kids that want to pretend that their as fast as the real bikes

its not accurate, not worth using.

yea your right that there a crap
but i had an x1 and on the very bottom of the speedo it say's kph
but any way it was still very off

all in all the china speedos suck and to be accurate u need an american made one....i personally have a garmin gps system mounted on my x-6

i got a segma bike spedo that i cant get to mount properly because it needs to clip onto a spoke should a take it back and get a diffrent one like the schwinn

All you need to do is glue or use quick weld to mount the magnet

My tai chi 40mph on radar not toped out yet, my L7 33mph with speedo,

plan on doing c/1 this weekend hope fully on both the speedo + radar

We mesured with calculations (well my brother did it).
His HF cag with only ex port ported, squish adjusted, stock carb tapered on the intake,reed spacer 2,5mm, home made air filter and stock exhaust modified to race exhaust, 6/68 gearing reached 38MPH, but is doing wheelies with ease.
My sons FF cag fuly ported, slightly modified exhaust, walbro 15mm copie carb off of a x7 with home made filter and airbox and squish adjusted, 7/68 gearing reached 45MPH but is being REported this days and exhaust will be made (real race exhaust) and then we will see how fast it will go.
My X7 ported (not fuly yet, but will be done too), stock exhaust mode, lightened flywheel, stock 15mm carb-modified, air box modified and home made air filter, stock gearing reached 48MPH (outperforms friends 4stroke X6, he only accelerates better but when my X7 hits the powerband it flys past his X6 haha).

i have a full fairing cag and a c1. i recently purchaced an x18. the china speedo on the x18 is accurate. i had a schwinn speedo mounted on the bike to compare with the china speedo. i had to go slow to compare the speedos because the schwinns are only accurate to like 31 mph and then they cut off or read like 80mph all of a sudden. my top speed i observed on the china speedo was 30. when i got home i checked the schwinn top speed recording and it said 30mph. i have not tried my x18 speedo on my pocket bikes. with a 60t sprocket on the c1 it has a crazy top speed. over 45. cag tops at about 45.lots of $$$$$$ is all it takes. i would have bought a euro if i knew before hand how much i was going to spend over the long run.

It DOES make about 30, taking into account the definate unreliability of the speedo.

china speedos are basicaly a cheap tachometer.. they have nothign to do with the wheels and speed, basicaly the RPMS...

i got mine riding next to a foo fighter

I had my brother fly along side me in his Xwing fighter.