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bbordt@flash.net
Posts: 6
Joined: Tue Jan 30, 2001 6:23 pm

cdi resistance measurements

Post by bbordt@flash.net » Mon Jun 18, 2001 6:05 pm

Hi All, Has anyone performed resistance measurements on a CDI unit (A4's and higher included) per the table in the KLR650 supplement? I just did, and am getting about two thirds of the values in the table to fall within limits. The other third having to do with the white or red wires are coming out way on the high side. I'm talking meg-ohms instead of kilo-ohms. Would you have a good CDI unit that you could measure the resistance of with respect to the red and white wires? If the table is to be believed, then I have a partially bad CDI unit. I thought it was the starter lockout switch on the clutch lever, but it aint. I've been over that sucker and now believe the problem is the CDI unit. Thanks for any help. Bruce Bordt, A14 Milford, MI

Rich Kickbush
Posts: 333
Joined: Fri Apr 21, 2000 3:55 pm

cdi resistance measurements

Post by Rich Kickbush » Mon Jun 18, 2001 8:40 pm

For some reason, the white and the red wires will only read correctly with an analogue meter. I found two different results with digital meters, one was reading infinity, the other was into the mega-ohms. I wrote down the values from stock - if I have a problem and want to check it, at least I have a baseline to see if something has changed. FWIW all other measurements were in spec. Rich
----- Original Message ----- From: To: DSN_klr650@yahoogroups.com> Sent: Monday, June 18, 2001 4:05 PM Subject: [DSN_klr650] CDI Resistance Measurements > Hi All, > > Has anyone performed resistance measurements on a CDI unit (A4's and > higher included) per the table in the KLR650 supplement? I just did, > and am getting about two thirds of the values in the table to fall > within limits. The other third having to do with the white or red > wires are coming out way on the high side. I'm talking meg-ohms > instead of kilo-ohms. > > Would you have a good CDI unit that you could measure the resistance > of with respect to the red and white wires? If the table is to be > believed, then I have a partially bad CDI unit. I thought it was the > starter lockout switch on the clutch lever, but it aint. I've been > over that sucker and now believe the problem is the CDI unit. > > Thanks for any help. > > Bruce Bordt, A14 > Milford, MI > > > > > > > Visit the KLR650 archives at > http://www.listquest.com/lq/search.html?ln=klr650 > > Post message: DSN_klr650@yahoogroups.com > Subscribe: DSN_klr650-subscribe@yahoogroups.com > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > List owner: DSN_klr650-owner@yahoogroups.com > > Support Dual Sport News by subscribing at: > http://www.dualsportnews.com > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >

Marcel Blais

cdi resistance measurements

Post by Marcel Blais » Mon Jun 18, 2001 8:44 pm

Hello Bruce, If I understand you correctly, you are getting some very high readings, (in the megohm range) when you attach the positive lead of the ohmeter to the red wire and the negative lead to the white wire. This is good if you are getting a low reading ( 10-55 ohms)with the positive lead of the ohmeter attached to white wire and the negative lead attached to the red wire. This indicates that the diode junction in that part of the circuit is functioning properly. If you had two high readings (megohms) with the leads attached either way, then you would have an open circuit indicating the diode is not functioning properly. This would be a rare occurrence, not impossible, as the failure mode of a diode junction is usually to short out and give you a low reading both ways. Follow this pattern for all the connections and you might find that you have the proper indicated readings. ( Note I did not say you had a good unit, just that the ohmeter checks are not finding anything abnormal) The high readings are not to worry. the infinity sign tells you better is higher. Hope this helps Marcel
> [Original Message] > From: > To: DSN_klr650@yahoogroups.com> > Date: 6/18/01 4:11:10 PM > Subject: [DSN_klr650] CDI Resistance Measurements > > Hi All, > > Has anyone performed resistance measurements on a CDI unit (A4's and > higher included) per the table in the KLR650 supplement? I just did, > and am getting about two thirds of the values in the table to fall > within limits. The other third having to do with the white or red > wires are coming out way on the high side. I'm talking meg-ohms > instead of kilo-ohms. > > Would you have a good CDI unit that you could measure the resistance > of with respect to the red and white wires? If the table is to be > believed, then I have a partially bad CDI unit. I thought it was the > starter lockout switch on the clutch lever, but it aint. I've been > over that sucker and now believe the problem is the CDI unit. > > Thanks for any help. > > Bruce Bordt, A14 > Milford, MI > > > > > > > Visit the KLR650 archives at > http://www.listquest.com/lq/search.html?ln=klr650 > > Post message: DSN_klr650@yahoogroups.com > Subscribe: DSN_klr650-subscribe@yahoogroups.com > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > List owner: DSN_klr650-owner@yahoogroups.com > > Support Dual Sport News by subscribing at: > http://www.dualsportnews.com > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ >
--- Marcel Blais --- marcelhblais@... --- EarthLink: It's your Internet.

Marcel Blais

cdi resistance measurements

Post by Marcel Blais » Mon Jun 18, 2001 9:00 pm

Some digital meters do not put out enough voltage to overcome the diode avalanche resistance. That is about .7 volts and double that if two diodes are in series. Sometimes when making circuit measurements that is an advantage. The better meters have a diode setting which increases the voltage out. This is the diode scale. Most analog meters simply put out more voltage than necessary and thus check diodes very nicely. I would recommend a simple analog meter for the diode measurements in the CDI unit. Marcel
> [Original Message] > From: Rich Kickbush > To: ; DSN_klr650@yahoogroups.com> > Date: 6/18/01 6:50:36 PM > Subject: Re: [DSN_klr650] CDI Resistance Measurements > > For some reason, the white and the red wires will only read correctly with > an analogue meter. I found two different results with digital meters, one > was reading infinity, the other was into the mega-ohms. I wrote down the > values from stock - if I have a problem and want to check it, at least I > have a baseline to see if something has changed. FWIW all other > measurements were in spec. > > Rich > ----- Original Message ----- > From: > To: DSN_klr650@yahoogroups.com> > Sent: Monday, June 18, 2001 4:05 PM > Subject: [DSN_klr650] CDI Resistance Measurements > > > > Hi All, > > > > Has anyone performed resistance measurements on a CDI unit (A4's and > > higher included) per the table in the KLR650 supplement? I just did, > > and am getting about two thirds of the values in the table to fall > > within limits. The other third having to do with the white or red > > wires are coming out way on the high side. I'm talking meg-ohms > > instead of kilo-ohms. > > > > Would you have a good CDI unit that you could measure the resistance > > of with respect to the red and white wires? If the table is to be > > believed, then I have a partially bad CDI unit. I thought it was the > > starter lockout switch on the clutch lever, but it aint. I've been > > over that sucker and now believe the problem is the CDI unit. > > > > Thanks for any help. > > > > Bruce Bordt, A14 > > Milford, MI > > > > > > > > > > > > > > Visit the KLR650 archives at > > http://www.listquest.com/lq/search.html?ln=klr650 > > > > Post message: DSN_klr650@yahoogroups.com > > Subscribe: DSN_klr650-subscribe@yahoogroups.com > > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > > List owner: DSN_klr650-owner@yahoogroups.com > > > > Support Dual Sport News by subscribing at: > > http://www.dualsportnews.com > > > > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> > > > > > > > > Visit the KLR650 archives at > http://www.listquest.com/lq/search.html?ln=klr650 > > Post message: DSN_klr650@yahoogroups.com > Subscribe: DSN_klr650-subscribe@yahoogroups.com > Unsubscribe: DSN_klr650-unsubscribe@yahoogroups.com > List owner: DSN_klr650-owner@yahoogroups.com > > Support Dual Sport News by subscribing at: > http://www.dualsportnews.com > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ >
--- Marcel Blais --- marcelhblais@... --- EarthLink: It's your Internet.

Jim Hyman
Posts: 412
Joined: Sat Apr 15, 2000 2:58 am

cdi resistance measurements

Post by Jim Hyman » Thu Jun 21, 2001 1:55 am

Bruce, Enclosed are my A9 CDI test results using an ANALOG VOM. Check out message #8095 at the KLR Yahoo web site for additional info on CDI testing. You may want to download & print my KLR color wiring diagram from the FILES section at the yahoo site (in the WIRING AND INSTRUMENTS folder). You can electrically disable all the safety switches by: 1) connecting the RED/BLACK CDI wire directly to ground 2) connecting the BLUE/RED wire from the STARTER CIRCUIT RELAY (or the clutch switch) to ground You could make this into a permanent ON/OFF safety-disable switch by using a DPST switch. This would allow you to keep all the safety interlock features, but disable them with a flick of the switch at any time. Let me know if you have any further questions. Professor A9 Federal Way, WA. [USA] +++++++++++ Bruce wrote: Hi All, Has anyone performed resistance measurements on a CDI unit (A4's and higher included) per the table in the KLR650 supplement? I just did, and am getting about two thirds of the values in the table to fall within limits. The other third having to do with the white or red wires are coming out way on the high side. I'm talking meg-ohms instead of kilo-ohms. Would you have a good CDI unit that you could measure the resistance of with respect to the red and white wires? If the table is to be believed, then I have a partially bad CDI unit. I thought it was the starter lockout switch on the clutch lever, but it aint. I've been over that sucker and now believe the problem is the CDI unit. Thanks for any help. Bruce Bordt, A14 Milford, MI [Non-text portions of this message have been removed]

Kurt Simpson
Posts: 907
Joined: Thu Apr 06, 2000 3:10 pm

cdi resistance measurements

Post by Kurt Simpson » Sat Jun 23, 2001 10:52 am

Enclosed are my A9 CDI test results using an ANALOG VOM. Check out message #8095 at the KLR Yahoo web site for additional info on CDI testing. You may want to download & print my KLR color wiring diagram from the FILES section at the yahoo site (in the WIRING AND INSTRUMENTS folder). You can electrically disable all the safety switches by: 1) connecting the RED/BLACK CDI wire directly to ground 2) connecting the BLUE/RED wire from the STARTER CIRCUIT RELAY (or the clutch switch) to ground You could make this into a permanent ON/OFF safety-disable switch by using a DPST switch. This would allow you to keep all the safety interlock features, but disable them with a flick of the switch at any time. Let me know if you have any further questions. Professor A9 Federal Way, WA. [USA] _______________ This is the stuff that seems to go uncommented on...I'm in awe professor...next KLR I'm getting I'm using this approach...thanks. Kurt

Kurt Simpson
Posts: 907
Joined: Thu Apr 06, 2000 3:10 pm

nklr homeless now project shopping cart

Post by Kurt Simpson » Sun Jun 24, 2001 7:33 am

OK, I'm going to start another list for the shopping cart. The reason is that not everyone will be interested in what I have in mind and I want to encourage careful discussion about what we're doing. I've already put together one cart and I was very satisfied with what I came out with...this one has to be the ultimate but not just what we might throw at it. So, over on this list we can debate in good style whether to go with a suspension mod or not...where to store the cans and bottles....what kind of brakes...etc. See you on the other side... http://groups.yahoo.com/group/DSN_Shopping_Cart Rich I'm not a moderator but I play one on this list... __________ Rich, this sounds really good...but I'm having trouble subbing...maybe you can help... Thanks, Kurt Don't want to be left out...

Marc Illsley Clarke

cdi resistance measurements

Post by Marc Illsley Clarke » Sun Jun 24, 2001 10:01 am

Ditto! -- Marc, KLR650 A12, Loveland, Colorado, USA "Kurt Simpson" wrote:
>This is the stuff that seems to go uncommented on...I'm in awe professor...next KLR >I'm getting I'm using this approach...thanks. > >Kurt
-- Marc Marc Illsley Clarke mailto:marcclarke@...

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