Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi Dabney, Sorry for the silence, I missed your reply. It's impossible to know without full details but I'm not sure that the 10kHz output is that suited to this application. The Jupiter has a 1 Hz update rate. As I understand it the 10kHz is updated at 1Hz which can cause phase jumps. I assume you have optical traps along the course. I'd look at the Trimble Palisade or Accutime units. These have a time-mark input. When this is triggered the unit will output the time with 320ns resolution (Accutime 200). This could then be sent by wireless to the timing control. On the 770MPH + car I had two systems. An electronic one using a reluctance sensor triggered by the brake disk drive dogs. The second one was a pitot driven airspeed indicator. I made the indicator by modifying a Machmeter from an F4 Phantom. The static reference pressure was stored in a stainless steel Dewar (OK a Stanley Thermos flask). The official timing was done by Dave Petrali of USAC. That was using traditonal light traps and electroinc timers. Regards, Robert G8RPI. --- On Tue, 14/12/10, Dabney Crump dab...@dhcrump.com wrote: From: Dabney Crump dab...@dhcrump.com Subject: Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: Discussion of precise time and frequency measurement time-nuts@febo.com Date: Tuesday, 14 December, 2010, 2:56 Hi All, I don't suppose anyone found any of the Jupiter units over the weekend? Thanks - Dabney On 12/13/2010 06:23 PM, paul swed wrote: Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crumpdab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi Robert, We have the Jupiter working well in our prototype; just need more of them for the final units. I've met Dave and know about his work. My timing requirements are a bit slower than Thrust SSC. I can only imagine what an experience that must have been. I'm involved with a number of Open Road Racing organizations in the US. The main function of my equipment is to provide accurate end to end timing over the full distance of the course which is between 26 to 84 miles. An associate of mine has become more involved with the timing of Mile Shootouts, which are more similar to LSR than my events. Do you still enjoy Jazz? Thanks much for your input and if I had a much larger budget, I'd look into the units that you suggested. Dabney Crump Denver, CO 303-324-1084 On 12/14/2010 11:03 AM, Robert Atkinson wrote: Hi Dabney, Sorry for the silence, I missed your reply. It's impossible to know without full details but I'm not sure that the 10kHz output is that suited to this application. The Jupiter has a 1 Hz update rate. As I understand it the 10kHz is updated at 1Hz which can cause phase jumps. I assume you have optical traps along the course. I'd look at the Trimble Palisade or Accutime units. These have a time-mark input. When this is triggered the unit will output the time with 320ns resolution (Accutime 200). This could then be sent by wireless to the timing control. On the 770MPH + car I had two systems. An electronic one using a reluctance sensor triggered by the brake disk drive dogs. The second one was a pitot driven airspeed indicator. I made the indicator by modifying a Machmeter from an F4 Phantom. The static reference pressure was stored in a stainless steel Dewar (OK a Stanley Thermos flask). The official timing was done by Dave Petrali of USAC. That was using traditonal light traps and electroinc timers. Regards, Robert G8RPI. --- On Tue, 14/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Date: Tuesday, 14 December, 2010, 2:56 Hi All, I don't suppose anyone found any of the Jupiter units over the weekend? Thanks - Dabney On 12/13/2010 06:23 PM, paul swed wrote: Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crumpdab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.comwrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crump dab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi All, I don't suppose anyone found any of the Jupiter units over the weekend? Thanks - Dabney On 12/13/2010 06:23 PM, paul swed wrote: Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crumpdab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Will be interesting to see if there is a US source and still at a reasonable cost. I did not find one On Thu, Dec 9, 2010 at 4:43 PM, Dabney Crump dab...@dhcrump.com wrote: Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crump dab...@dhcrump.com wrote: From: Dabney Crump dab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
i don't have 10, but I have a few that will want new homes. will have to dig this WE On 12/9/2010 3:43 PM, Dabney Crump wrote: Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Would be interested Regards Paul. On Thu, Dec 9, 2010 at 6:25 PM, Oz-in-DFW li...@ozindfw.net wrote: i don't have 10, but I have a few that will want new homes. will have to dig this WE On 12/9/2010 3:43 PM, Dabney Crump wrote: Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
