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SW North Dakota | Where can I find an aftermarket speedometer that will work in our 4640? It currently has nothing to show accurate ground speed. Thanks |
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North Central South Dakota | Your might want to consider a Handheld GPS. They seem to be very accurate for speed and inexpensive. |
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Western Oregon | Haunt ebay till you find a used newer calc an acre $150. Buy a gps speed sensor for $250. Get a magnetic welding clamp from harbor freight ($5). Mount the calc an acre to the magnetic base. Then you have a speedo and acre counter that you can take anywhere. Probably not the info you were looking for. I had the same problem finding a speedometer for a White tractor. I finally gave up and did the used ebay calc an acre route. |
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Hagen Brothers farms,Goodrich ND | Rowdy - 2/10/2008 10:11
Your might want to consider a Handheld GPS. They seem to be very accurate for speed and inexpensive.
Ditto on the GPS. Not only a speedometer that is accurate to 1/10 mph, but it will calculate area, distance, mark 100+ way points you may want to find again, works as a compass to lay out straight lines etc.
I used my little hand held Garmin GPS when I went shopping for another semi tractor that had low enough gearing to pull a trailer out of a soft field. Instead of trying to paw my way through all the transmission and drive axle combinations to find what would work and how to identify it in a snowy truck lot. I used the GPS unit to measure the ground speed of my old truck at 1500 engine rpm in the lowest gear which was 3.8 mph.
When we found a truck we liked, we drove it in low hole at 1500 rpm and the GPS indicated the same 3.8 mph as our old truck which pulls well out of a field. figured that both engines had the same engine rpm range and the trans /axle ratio combination produced the same speed at a set rpm, so we should be good to go. |
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Simcoe Ontario Canada | 3rd vote for a GPS based solution. You dont say what you are doing with the tractor, but you could also use of a lightbar or something similar and have guidance as well. Many of them show speed on the display and will send simulated radar to other monitors. If you have no need for a lightbar, I would go with a hand held unit as suggested earlier.
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| Micro- trak calc - an -acre is the solution we used on our 4230.
INDY |
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Eastern Ontario | I use the Garmin handheld GPS for the sprayer. It is very close to other monitors with radar. Only thing is, you need a lot of batteries. A Calc-AN-Acre unit with GPS would be better as it runs on your tractors power supply. No need for batteries.
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Hagen Brothers farms,Goodrich ND | Clay-All-Over - 2/11/2008 07:06
I use the Garmin handheld GPS for the sprayer. It is very close to other monitors with radar. Only thing is, you need a lot of batteries. A Calc-AN-Acre unit with GPS would be better as it runs on your tractors power supply. No need for batteries.
My Garmin Etrix portable gps has a cig lighter power cord option, so that helps with the battery problem when I am using a machine with a working lighter socket.
Otherwise I run it with high capacity NiMH rechargable batteries that have a 15 minute recharge time . |
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Eastern Ontario | . |
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North End I-15 | Some on this board recomended it several years ago . I bought one with the power cord , external Antena , and a marine holder which I mounted on a steel plate with rubber feet. It moves from Tractor to sprayer , vehicle , quad , etc . Mag mount antena requires external power to the GPS as it eats batteries in a hurry . The accuracy is far greater with the powered antena .
Then you need this http://www.gpsu.co.uk/ It will manage all your data . Make nice maps , over lay them on to FSA maps . A very Good free program and a low cost upgrade program. Works with most all handhelds . You will need data transfer cord to get in to computer. I love mine . (total cost with all the goodies and program was less than $500)
Was it Biker Bob who used to post here ?
Edited by Ernie 2/10/2008 12:21
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| One thing to consider - you can get a new GPS lightbar for under $1000, and have guidance, if you need. Most (if not all) have a groundspeed readout, so you might be able to kill two birds with one stone....... |
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Tractor add-on speedometer
