GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » Rostra Cruise control PPM
Rostra Cruise control PPM [message #289027] Mon, 19 October 2015 13:07 Go to next message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
Senior Member
I'm in the process of replacing my Rostra Cruise control. I am using a pulse generator that says on it "8 pulses per revolution". So, I need to know how many revolutions per mile is the speedometer output of our transmissions, so I can calculate pulses per mile set on the dip switches. Anyone know how many revs/mile Our trans speedo output is?
Thanks.

Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.

Report message to a moderator

Re: Rostra Cruise control PPM [message #289037 is a reply to message #289027] Mon, 19 October 2015 18:43 Go to previous messageGo to next message
wally is currently offline  wally   United States
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
Karma: 5
Senior Member
Larry wrote on Mon, 19 October 2015 13:07
I'm in the process of replacing my Rostra Cruise control. I am using a pulse generator that says on it "8 pulses per revolution". So, I need to know how many revolutions per mile is the speedometer output of our transmissions, so I can calculate pulses per mile set on the dip switches. Anyone know how many revs/mile Our trans speedo output is?
Thanks.

GM standard was 1,000 revolutions per mile. I think other makers were the same.

Wally Anderson
Omaha NE
75 Glenbrook

Report message to a moderator

Re: Rostra Cruise control PPM [message #289039 is a reply to message #289037] Mon, 19 October 2015 19:27 Go to previous messageGo to next message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
Senior Member
wally wrote on Mon, 19 October 2015 18:43
Larry wrote on Mon, 19 October 2015 13:07
I'm in the process of replacing my Rostra Cruise control. I am using a pulse generator that says on it "8 pulses per revolution". So, I need to know how many revolutions per mile is the speedometer output of our transmissions, so I can calculate pulses per mile set on the dip switches. Anyone know how many revs/mile Our trans speedo output is?
Thanks.

GM standard was 1,000 revolutions per mile. I think other makers were the same.

Thanks Wally.....8000PPM. Higher than I thought.

Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.

Report message to a moderator

Re: Rostra Cruise control PPM [message #289047 is a reply to message #289039] Mon, 19 October 2015 22:30 Go to previous message
Bullitthead is currently offline  Bullitthead   United States
Messages: 1411
Registered: November 2013
Karma: 5
Senior Member
The instructions for the speedo-cable signal generator specify using the 8000ppm settings in the cruise module.

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

Report message to a moderator

Previous Topic: [GMCnet] Weekly Specials - Adventure RV
Next Topic: [GMCnet] The Restoration. Insulation of the body
Goto Forum:
  


Current Time: Sat Oct 05 15:03:34 CDT 2024

Total time taken to generate the page: 0.00830 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software