Author Topic: Post your GP8 times  (Read 26457 times)

Springer

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Re: Post your GP8 times
« Reply #15 on: November 04, 2012, 01:41:49 PM »
 Using an aftermarket fueler can help with the ruff spots on a fuel injected bike. In the U.S. motorcycles come very lean from the factory do to EPA regulations. Even without an aftermarket exhaust a decent aftermarket fuel management unit will help smooth out throttle response and add a little power.
 Units can range in price from $100.00 dollars (U.S.) to over $1000.00. The XIOD units are cheap but they are just a resistor that is placed inline or completely does away with the O2 sensors. This richens the air/fuel ratio across the entire RPM range. The problem is that in some parts of the RPM range it will cause a mixture that is too rich. A mixture that is too rich will rob power and cause fouling of the spark plugs.
 Aftermarket fuelers in the $200.00 - $400.00 range will usually give the operator a simple way to richen the mixture in the lower and medium RPM range. This is where most motorcycles are lean at. The Patriot Top Fueler is one example of this type of fueler.
 Fuelers in the $500.00 - $1000.00 dollar range offers more options to tune the motorcycle over the entire RPM range using a Dyno, a trained technician, and a computer. Other options are available like a self-tuning feature with wide band O2 sensors.

 Also some factory brands can be tuned by a technician at a dealer using a Dyno, a "off-road or only program" and a computer.     

momopapa

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Re: Post your GP8 times
« Reply #16 on: December 09, 2012, 03:56:44 PM »
Hello,

This is my first post from Boise Idaho.
I'm a return rider in US.
I've got a motorcycle endoesement in November and then I bought a CBR600F3 in the same weekend.

It was about 41 seconds.
I don't have a timer so this time is counted from the video.

<iframe width="560" height="315" src="http://www.youtube.com/embed/z4-LlbzYvMI" frameborder="0" allowfullscreen></iframe>


Lnewqban

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Re: Post your GP8 times
« Reply #17 on: December 09, 2012, 10:31:22 PM »
Welcome to the site !!

Great time and rhythm.   :)
Never ride faster than your guardian angel can fly.

Motogymkhanaman

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Re: Post your GP8 times
« Reply #18 on: December 10, 2012, 04:55:49 AM »
Well done momopapa that is quite excellent riding. To get a 41" GP8 after such a short period is nothing short of amazing. Try and remember the mantra "Your bike goes where your nose is pointing" so I suggest that you study the hundreds of Moto Gymkhana videos on Youtube to see how the top riders 'snap' their heads around so that the next pylon is always in their direct line of vision. By doing this, you will see your times get quicker and quicker.

Keep posting videos of your attempts, so we can all see how you are improving.
 

momopapa

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Re: Post your GP8 times
« Reply #19 on: December 11, 2012, 03:32:34 PM »
Thanks Lnewqban and Motogymkhanaman for welcoming.

Since I'm still a beginner, I used methods to make it easier for me:
1, Idle speed up to about 2000 rpm to prevent stop engine.
2, Used only rear brake.
3, Drag rear brake to make it slow down, lean and steer.
4, Was also dragging rear brake when accelerate for stabilizing it OR the bike stood up suddenly.
So my next target might be using Front break to make the front suspension compressed and keeping it while banking the bike to the full bank.
Full lock steering is also my goal too.


buzz

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Re: Post your GP8 times
« Reply #20 on: December 18, 2012, 05:36:45 PM »
On a bike with clip ons. I'm impressed

momopapa

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Re: Post your GP8 times
« Reply #21 on: December 26, 2012, 07:02:45 PM »
Happy Holidays everyone.

I was able to have time to practice while my wife was making Christmas dinner, ... bad husband :-)

It was not a complete cycle of GP8 but I can estimate time by time of one cycle X 5 = about 40 seconds.

バイク練習 Day6


I will keep posting even tiny steps.


Motogymkhanaman

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Re: Post your GP8 times
« Reply #22 on: December 27, 2012, 05:38:22 AM »
Well momopapa, you must be a brave man indeed to sneak out for some GP8 practice whilst the good lady is slaving over a hot stove! Nice riding by the way.

momopapa

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Re: Post your GP8 times
« Reply #23 on: March 03, 2013, 05:20:38 PM »
Spring has come  :-)
Pile of snow's gone so began to ride.




A little improved.

Motogymkhanaman

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Re: Post your GP8 times
« Reply #24 on: March 05, 2013, 05:04:21 AM »
One of the Polish Moto Gymkhana riders is cracking in some great GP8 times.

FILE0010



Check out his party trick.

Suzuki GS500 slow cornering :)



ViciousCycle

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Re: Post your GP8 times
« Reply #25 on: January 15, 2014, 05:23:39 PM »
My best time last weekend: 39.68. Gonna try to beat it this weekend.

xp@

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Re: Post your GP8 times
« Reply #26 on: February 19, 2014, 07:47:39 PM »
I managed to clock 39.2 on my CB900 but then got my 650 Transalp out and shaved off 4.1s so now on 35.1.

I can get cleaner, I can get tighter and I'm thinking a return to the conti-attack would be welcomed (the bridgestone is not feeling nice).

Springer

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Re: Post your GP8 times
« Reply #27 on: March 30, 2014, 05:45:24 PM »
 Good times y'all! Keep it coming!

iwasz

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Re: Post your GP8 times
« Reply #28 on: March 16, 2016, 06:10:48 PM »
Hello fellow gymkhaners.

https://youtu.be/TOBAtMC-CO0

  I am trying to get motivation to polish my moto-gymkhana stopwatch project (https://hackaday.io/project/7606-moto-gymkhana-stopwatch). Right now it is quite usable for me (see video https://youtu.be/TOBAtMC-CO0), but I was wondering if someone would want to buy it. I mean making a working prototype of an electronic device and making a production one are completely different things, and I'm wondering if finishing this is is worth the effort. The current state is:
  • There are 2 devices : transmitter and receiver, and both have standard tripod mounts like cameras
  • 1000mAh batteries last for 5-10 hourts (? to be verified)
  • range to be verified. On cloudy weather I was able to achieve ~10m (30ft), but direct sun tends to make *lots* of trouble
  • Both devices are charged from micro USB type wall-warts

What I plan to do, and know how to implement it :

- Receiver when connected via USB to a PC would show all recent lap-times.

What I would want to implement, but it is difficult:

- Bluetooth LE (smart) proximity profile. I see this like this: a group of friends on bikes gather on a parking lot, and are about to practice say GP8. Every rider has a bluetooth smart enabled cell phone with an application running. They stand in a queue couple meters / feet from the stopwatch and wait for their turn.
- When a rider approaches the device, It connects with his cell-phone, and rider's nick name gets stored in stop-watch memory. This way, lap-times are assigned to riders.

After training, owner of the device downloads the results, and post them to FB, or somewhere. Everybody knows their times.

Please tell me what you think. There are tons of work to do to make this come true, and I have (like all of us) only limited time. But every time I return home from gymkhana practice with friends I recall this project, and want to work on it.

KrisCook

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Re: Post your GP8 times
« Reply #29 on: May 11, 2016, 10:46:52 AM »
Hello fellow gymkhaners.

https://youtu.be/TOBAtMC-CO0

  I am trying to get motivation to polish my moto-gymkhana stopwatch project (https://hackaday.io/project/7606-moto-gymkhana-stopwatch). Right now it is quite usable for me (see video https://youtu.be/TOBAtMC-CO0), but I was wondering if someone would want to buy it. I mean making a working prototype of an electronic device and making a production one are completely different things, and I'm wondering if finishing this is is worth the effort. The current state is:
  • There are 2 devices : transmitter and receiver, and both have standard tripod mounts like cameras
  • 1000mAh batteries last for 5-10 hourts (? to be verified)
  • range to be verified. On cloudy weather I was able to achieve ~10m (30ft), but direct sun tends to make *lots* of trouble
  • Both devices are charged from micro USB type wall-warts

What I plan to do, and know how to implement it :

- Receiver when connected via USB to a PC would show all recent lap-times.

What I would want to implement, but it is difficult:

- Bluetooth LE (smart) proximity profile. I see this like this: a group of friends on bikes gather on a parking lot, and are about to practice say GP8. Every rider has a bluetooth smart enabled cell phone with an application running. They stand in a queue couple meters / feet from the stopwatch and wait for their turn.
- When a rider approaches the device, It connects with his cell-phone, and rider's nick name gets stored in stop-watch memory. This way, lap-times are assigned to riders.

After training, owner of the device downloads the results, and post them to FB, or somewhere. Everybody knows their times.

Please tell me what you think. There are tons of work to do to make this come true, and I have (like all of us) only limited time. But every time I return home from gymkhana practice with friends I recall this project, and want to work on it.

That sounds complicated!   Have you worked on it any more?

We just have a timer that trips when you cross the line to start the GP8 and stops counting when you come back across it.  And I think it was plenty expensive.    :o
"I plan to keep this one long enough to determine the approximate plum-wore-out coefficient."  -- KD Trull