A little help please.

Musclecars4l1fe · October 1st, 2017, 12:01 PM

I'm having an issue with my tach and speedo not reading correcty. They both work as does the odo, and trip they just don't read correctly. I have looked through here for a similar problem to no avail. If anyone has encountered this problem or know of a thread for it already. Please enlighten me as to what is going on. I have searched else where and all I can find is the units themselves need to be replaced.

gavinfdavies · October 6th, 2017, 02:39 AM

Is this a new issue, or has the bike always been this way? If the reading is steady, and is consistenly wrong, then it might be that the wrong cable drive box is fitted to the wheel. Different kwaks have different wheel and tyre sizes but can use the same size cable drive. For example, a GPZ600R (16" bubble tyre) drive will fit a GPZ500s (17" low profile), but will give a VERY wrong reading.

could also be a knackered cable.

Musclecars4l1fe · October 6th, 2017, 02:41 AM

It started after I went down. I got a nail in the tire while riding and didn't know it until it was too late. Just cosmetic damage. I did however replace both sprockets, the chain and the speedometer cable. It still reads but the reading is wrong.

Kestrel · October 6th, 2017, 05:50 AM

Speedo cable and tach are unrelated - speedo/odometer are direct drive via the cable off the front wheel. The first thing I'd ask would be... are you sure you correctly reassembled the front wheel? There's a rather specific orientation for the speedo to 'click' into the drive gear of the wheel.

Musclecars4l1fe · October 6th, 2017, 12:34 PM

I did not take apart the front wheel. The speedocable is "plug-n-play" you can't mess it up!

I know the tach and speedo are separate, this isn't my first rodeo and will not be my last. I am a car mechanic, not a motorcycle mechanic. That is why I asked if anyone has run into the same issue.

For example. I put an RPM gauge on the plug yesterday, the bikes tach read 3k rpms, the gauge I put on the plug read 4k. So I revved it up to 7k on the bikes tach. The plug tach read 9k rpms.

DannoXYZ · October 6th, 2017, 01:50 PM

Double-check the plug-tach with known-good source. Say a car you know is in good condition. Does the plug-tach match the car's tach? Also make sure tach is set to correct number of cylinders.

Musclecars4l1fe · October 6th, 2017, 02:02 PM

I did make sure the plug-tach reads correctly on another vehicle before using it on the bike. Good suggestions though as things like that can be easily over looked and equipment malfunctions and fails.

Triple Jim · October 6th, 2017, 03:40 PM

The tachometer board has a potentiometer on it that allows a fairly wide range of calibration. It's not hard to get to, but you do have to take the tach out of its housing and get it apart. I don't remember needing any special tools.

Musclecars4l1fe · October 25th, 2017, 04:59 PM

AWESOME!!! I'll do some digging into that. As for the speedometer, is it able to be calibrated at the front wheel?

I could not find anything on that.

Triple Jim · October 25th, 2017, 05:37 PM

I'm sure it can be. How difficult it is to get apart, and how to calibrate it are not something I can answer though.

October 1st, 2017, 12:01 PM	#1
Musclecars4l1fe ninjette.org member Name: Joe Location: Hot Springs Join Date: Apr 2017 Motorcycle(s): 07 ninja 250 Posts: 27	A little help please. I'm having an issue with my tach and speedo not reading correcty. They both work as does the odo, and trip they just don't read correctly. I have looked through here for a similar problem to no avail. If anyone has encountered this problem or know of a thread for it already. Please enlighten me as to what is going on. I have searched else where and all I can find is the units themselves need to be replaced.

October 6th, 2017, 02:39 AM	#2
gavinfdavies ninjette.org member Name: Gavin Location: Newport, South Wales, UK Join Date: Aug 2017 Motorcycle(s): 1996 GPX 250 --- Also '96 GPZ500, '12 AJP PR4 200, '16 Yamaha Tricity, '13 Royal Enfield Continental GT 535 Posts: 10	Is this a new issue, or has the bike always been this way? If the reading is steady, and is consistenly wrong, then it might be that the wrong cable drive box is fitted to the wheel. Different kwaks have different wheel and tyre sizes but can use the same size cable drive. For example, a GPZ600R (16" bubble tyre) drive will fit a GPZ500s (17" low profile), but will give a VERY wrong reading. could also be a knackered cable.

October 6th, 2017, 02:41 AM	#3
Musclecars4l1fe ninjette.org member Name: Joe Location: Hot Springs Join Date: Apr 2017 Motorcycle(s): 07 ninja 250 Posts: 27	It started after I went down. I got a nail in the tire while riding and didn't know it until it was too late. Just cosmetic damage. I did however replace both sprockets, the chain and the speedometer cable. It still reads but the reading is wrong.

October 6th, 2017, 05:50 AM	#4
Kestrel ninjette.org member Name: Patrick Location: NC Join Date: Nov 2015 Motorcycle(s): DR350, Ninja 250 Posts: 69	Speedo cable and tach are unrelated - speedo/odometer are direct drive via the cable off the front wheel. The first thing I'd ask would be... are you sure you correctly reassembled the front wheel? There's a rather specific orientation for the speedo to 'click' into the drive gear of the wheel.

October 6th, 2017, 12:34 PM	#5
Musclecars4l1fe ninjette.org member Name: Joe Location: Hot Springs Join Date: Apr 2017 Motorcycle(s): 07 ninja 250 Posts: 27	I did not take apart the front wheel. The speedocable is "plug-n-play" you can't mess it up! I know the tach and speedo are separate, this isn't my first rodeo and will not be my last. I am a car mechanic, not a motorcycle mechanic. That is why I asked if anyone has run into the same issue. For example. I put an RPM gauge on the plug yesterday, the bikes tach read 3k rpms, the gauge I put on the plug read 4k. So I revved it up to 7k on the bikes tach. The plug tach read 9k rpms.

October 6th, 2017, 01:50 PM	#6
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Double-check the plug-tach with known-good source. Say a car you know is in good condition. Does the plug-tach match the car's tach? Also make sure tach is set to correct number of cylinders.

October 6th, 2017, 02:02 PM	#7
Musclecars4l1fe ninjette.org member Name: Joe Location: Hot Springs Join Date: Apr 2017 Motorcycle(s): 07 ninja 250 Posts: 27	I did make sure the plug-tach reads correctly on another vehicle before using it on the bike. Good suggestions though as things like that can be easily over looked and equipment malfunctions and fails.

October 6th, 2017, 03:40 PM	#8
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	The tachometer board has a potentiometer on it that allows a fairly wide range of calibration. It's not hard to get to, but you do have to take the tach out of its housing and get it apart. I don't remember needing any special tools.

October 25th, 2017, 04:59 PM	#9
Musclecars4l1fe ninjette.org member Name: Joe Location: Hot Springs Join Date: Apr 2017 Motorcycle(s): 07 ninja 250 Posts: 27	AWESOME!!! I'll do some digging into that. As for the speedometer, is it able to be calibrated at the front wheel? I could not find anything on that.

October 25th, 2017, 05:37 PM	#10
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	I'm sure it can be. How difficult it is to get apart, and how to calibrate it are not something I can answer though.