GPX Pro

TGRIFF · October 13th, 2012, 01:46 PM

Any racers wire their GPX pro into their 250 to track some of the other features it offers? How did you do it? Any tips?

Gurk · October 13th, 2012, 11:13 PM

I'm not a racer but I ride on track exclusively. I like to see my lap times so I got a GPX pro for my r6. I ended up getting rid of my stock dash board as I hooked up GPX to my bike and can monitor

Accurate speed via GPS,
RPM's,
Gear,
Water temperature,
Fuel Indicator,
Throttle Position (when and where I open/close throttle)
Brake Position (for now it's on or off but I'll add pressure sensor to show % for this one also)

Soooo, everything the dash shows + a hell lot more.

You gotta know that I'm an absolute noob as far as wiring goes. All I can do is cut wires and strip them together. What I did was go to XT Racing forums and asked for schematics. There's a few XT Racing employees there who monitor and post on the forums and one of them gave me a complete schematic showing which wire on the bike should be connected to which data cable on the GPX.

I suggest you go there and post your bike year/model and ask for the same thing.

Sorry all that type and not helping you directly but just wanted to say it's worth the effort and XT people can definitely help you! I got a response from them instantly.

TGRIFF · October 14th, 2012, 12:14 PM

Thanks for the response. I will head over there and see what I can find. I will let you know how it goes.

chugs · January 19th, 2014, 11:37 PM

Just picked up a gpx pro for the ninja any updates to this thread?

sharky nrk · January 20th, 2014, 06:36 AM

Pics of install?

csmith12 · January 20th, 2014, 08:32 AM

I think @iZapp has one that he mounts on his son's 250.

iZapp · January 20th, 2014, 01:24 PM

Quote:

Originally Posted by csmith12

I think @iZapp has one that he mounts on his son's 250.

hiya buddy! yah we've got one on his bike, and the install is nothing more than a big piece of velcro right on the stock speedo cluster. RPM taps into the crank sensor, and for TPS i had to make a little bracket to hold the string-pot sensor that connects to the throttle lever. i can upload a photo if interested. - funny story... i had csmith convinced it was actually a remotely controlled throttle servo i could use when the kid wasnt going fast enough!!

csmith12 · January 20th, 2014, 01:35 PM

Hahahahahahahaha, yep! I remember that too.

DCMoney · January 20th, 2014, 02:15 PM

Quote:

Originally Posted by iZapp

hiya buddy! yah we've got one on his bike, and the install is nothing more than a big piece of velcro right on the stock speedo cluster. RPM taps into the crank sensor, and for TPS i had to make a little bracket to hold the string-pot sensor that connects to the throttle lever. i can upload a photo if interested. - funny story... i had csmith convinced it was actually a remotely controlled throttle servo i could use when the kid wasnt going fast enough!!

Details on the string potentiometer would be awesome! I hate not knowing my throttle position...

chugs · January 20th, 2014, 03:31 PM

Quote:

Originally Posted by DCMoney

Details on the string potentiometer would be awesome! I hate not knowing my throttle position...

+2 pix would be awesome.

iZapp · January 20th, 2014, 04:01 PM

Quote:

Originally Posted by chugs

+2 pix would be awesome.

the blue circles are the two tapped holes for the screws on the pot (screws come in from back side). the red arrow shows the string going to the throttle. the pot is mounted to a 1/8" thick aluminum plate which is trimmed to fit perfectly in the tiny little spot in that corner and is held in place with the large rear motor mount nut. the string pot is an early billet alum one that XT was selling. dunno if they still are. the electrical cord is shown leaving the pot from about the 9 oclock position. sorry for the crap photo.

sierrahotel · January 20th, 2014, 09:37 PM

Quote:

Originally Posted by iZapp

hiya buddy! yah we've got one on his bike, and the install is nothing more than a big piece of velcro right on the stock speedo cluster. RPM taps into the crank sensor, and for TPS i had to make a little bracket to hold the string-pot sensor that connects to the throttle lever. i can upload a photo if interested. - funny story... i had csmith convinced it was actually a remotely controlled throttle servo i could use when the kid wasnt going fast enough!!

Crank sensor works ok? For some reason I thought it wouldn't, so I use inductive- which is really noisy.

iZapp · January 21st, 2014, 04:59 AM

Quote:

Originally Posted by sierrahotel

Crank sensor works ok? For some reason I thought it wouldn't, so I use inductive- which is really noisy.

plug n play

zvonler · January 21st, 2014, 09:53 AM

chugs, I see you found my thread over on xtracing.com already, but here's a link to my post about what I've got the GPX monitoring, in case others want to see.

I've got the device wired up to monitor/record RPM, oil pressure warning, coolant temp warning, fuel level, and brake activation. The oil pressure, coolant temp, and fuel level sensor circuits are all simple voltage dividers that use the 5V reference supply from the GPX and a resistor, just like the diagram that's posted earlier in that thread. For the oil and coolant sensors, the resistors are 1k ohm, and for the fuel level I used a 100 ohm resistor. I made another voltage divider using the front brake switch by wiring one of its contacts to ground and using a 10k ohm pulldown resistor on its other contact.

I can take some pics later to post but I don't know how helpful they'll be - I've shrink-wrapped and electrical taped all the solder joints and then covered them with plastic loom.

DCMoney · January 21st, 2014, 11:47 AM

Quote:

Originally Posted by iZapp

the blue circles are the two tapped holes for the screws on the pot (screws come in from back side). the red arrow shows the string going to the throttle. the pot is mounted to a 1/8" thick aluminum plate which is trimmed to fit perfectly in the tiny little spot in that corner and is held in place with the large rear motor mount nut. the string pot is an early billet alum one that XT was selling. dunno if they still are. the electrical cord is shown leaving the pot from about the 9 oclock position. sorry for the crap photo.

Thanks, was hoping you found a cheap source for the sensor.

chugs · January 21st, 2014, 12:52 PM

Quote:

Originally Posted by zvonler

chugs, I see you found my thread over on xtracing.com already, but here's a link to my post about what I've got the GPX monitoring, in case others want to see.

I've got the device wired up to monitor/record RPM, oil pressure warning, coolant temp warning, fuel level, and brake activation. The oil pressure, coolant temp, and fuel level sensor circuits are all simple voltage dividers that use the 5V reference supply from the GPX and a resistor, just like the diagram that's posted earlier in that thread. For the oil and coolant sensors, the resistors are 1k ohm, and for the fuel level I used a 100 ohm resistor. I made another voltage divider using the front brake switch by wiring one of its contacts to ground and using a 10k ohm pulldown resistor on its other contact.

I can take some pics later to post but I don't know how helpful they'll be - I've shrink-wrapped and electrical taped all the solder joints and then covered them with plastic loom.

Can u provide a visual schematic for each voltage divider?

Knolly · January 22nd, 2014, 08:16 AM

Finally unpacked my GPX Pro last weekend, so this is all pretty great stuff. Gotta sit down and hammer out some of this before the season starts.

iZapp · May 6th, 2014, 04:08 PM

the string-pot (linear potentiometer) used for throttle position that's shown above is for sale. we sold our 250 track stuff and the pot is no longer useful to us. PM me if interested. 75 plus shipping.

rc-rick · May 13th, 2014, 03:28 AM

Quote:

Originally Posted by DCMoney

Details on the string potentiometer would be awesome! I hate not knowing my throttle position...

There is only one position for the throttle...PINNED!

That's why I'm up front.

October 13th, 2012, 01:46 PM	#1
TGRIFF ninjette.org member Name: Tyson Location: Fayetteville, NC Join Date: Jan 2012 Motorcycle(s): 08 Ninja 250R Posts: 72	GPX Pro Any racers wire their GPX pro into their 250 to track some of the other features it offers? How did you do it? Any tips?

January 20th, 2014, 08:32 AM	#6
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	I think @iZapp has one that he mounts on his son's 250. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

January 20th, 2014, 01:35 PM	#8
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	Hahahahahahahaha, yep! I remember that too. __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
XT Racing GPX Pro	green_bread	Items Wanted	2	October 28th, 2014 04:44 PM
Gpx 250 clutch issue (i think)	bowerbird100	1986 - 2007 Ninja 250R Tech Talk	3	June 22nd, 2014 03:14 PM
New GPX 3rd Gen Owner From Australia	burnrich	New Members	14	January 22nd, 2014 08:46 PM
XT GPX Pro	DCMoney	2008 - 2012 Ninja 250R Farkles	16	September 25th, 2013 05:40 AM
FS: Joe Rocket GPX 2.0 Gloves	rasta	Gear-related	11	September 24th, 2013 10:00 PM

October 13th, 2012, 11:13 PM	#2
Gurk Done here. Name: - Location: Track Join Date: Jul 2011 Motorcycle(s): - Posts: A lot.	I'm not a racer but I ride on track exclusively. I like to see my lap times so I got a GPX pro for my r6. I ended up getting rid of my stock dash board as I hooked up GPX to my bike and can monitor Accurate speed via GPS, RPM's, Gear, Water temperature, Fuel Indicator, Throttle Position (when and where I open/close throttle) Brake Position (for now it's on or off but I'll add pressure sensor to show % for this one also) Soooo, everything the dash shows + a hell lot more. You gotta know that I'm an absolute noob as far as wiring goes. All I can do is cut wires and strip them together. What I did was go to XT Racing forums and asked for schematics. There's a few XT Racing employees there who monitor and post on the forums and one of them gave me a complete schematic showing which wire on the bike should be connected to which data cable on the GPX. I suggest you go there and post your bike year/model and ask for the same thing. Sorry all that type and not helping you directly but just wanted to say it's worth the effort and XT people can definitely help you! I got a response from them instantly.

October 14th, 2012, 12:14 PM	#3
TGRIFF ninjette.org member Name: Tyson Location: Fayetteville, NC Join Date: Jan 2012 Motorcycle(s): 08 Ninja 250R Posts: 72	Thanks for the response. I will head over there and see what I can find. I will let you know how it goes.

January 19th, 2014, 11:37 PM	#4
chugs Schönen Tag noch Name: c Location: Central Cali Join Date: Sep 2013 Motorcycle(s): 08 ninja 250 race bike, 02 gixxer 600 telefonica Posts: 184	Just picked up a gpx pro for the ninja any updates to this thread?

January 20th, 2014, 06:36 AM	#5
sharky nrk Fighting Texas Aggie '05 Name: Neil Location: Hutto, TX Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.	Pics of install?

January 21st, 2014, 09:53 AM	#14
zvonler ninjette.org member Name: Zach Location: Texas Join Date: Dec 2012 Motorcycle(s): 250R Posts: 70	chugs, I see you found my thread over on xtracing.com already, but here's a link to my post about what I've got the GPX monitoring, in case others want to see. I've got the device wired up to monitor/record RPM, oil pressure warning, coolant temp warning, fuel level, and brake activation. The oil pressure, coolant temp, and fuel level sensor circuits are all simple voltage dividers that use the 5V reference supply from the GPX and a resistor, just like the diagram that's posted earlier in that thread. For the oil and coolant sensors, the resistors are 1k ohm, and for the fuel level I used a 100 ohm resistor. I made another voltage divider using the front brake switch by wiring one of its contacts to ground and using a 10k ohm pulldown resistor on its other contact. I can take some pics later to post but I don't know how helpful they'll be - I've shrink-wrapped and electrical taped all the solder joints and then covered them with plastic loom.

January 22nd, 2014, 08:16 AM	#17
Knolly ninjette.org member Name: Alex Location: Chicago Join Date: Apr 2013 Motorcycle(s): Daytona 675 Posts: 79	Finally unpacked my GPX Pro last weekend, so this is all pretty great stuff. Gotta sit down and hammer out some of this before the season starts.

May 6th, 2014, 04:08 PM	#18
iZapp former ninja 250'er Name: Geo Location: NE Ohio Join Date: Jan 2013 Motorcycle(s): Aprilia 1000R, CRF450, CBR600RR tracktoy, Ninja 250 -- GONE!!!!! Posts: 153	the string-pot (linear potentiometer) used for throttle position that's shown above is for sale. we sold our 250 track stuff and the pot is no longer useful to us. PM me if interested. 75 plus shipping.