John Deere A top speed question

ffdfireman18 · Jun 13, 2012

I have a 45 JD A ser#558344. It has the six speed transmission in it. In the manual with 11-38 tires, the top speed is 12 3/4 mph. Mine has 12.4-38 tires and when you put it in sixth gear it will go 22-23 mph. About 9-10 mph in 4th. Most all the work is done in 1st or 2nd gear. Is it an option or something to have a high speed rear end in it? If so, any ideas on how the gear it down a bit. Thanks for he help.

bigboreG · Jun 13, 2012

Are you sure on the speed? i have never seen an A that will go that fast. Unless someone modified it in some way at one point in time. There was no optional high speed rearends for the A series.

Meangreen · Jun 14, 2012

I had a 44 with the same size rear tires as yours and I topped out at 16 mph fully open.

larryanderson · Jun 14, 2012

It would sure turn heads on a tractor ride.I have heard of people changing them as they were not made for speed.Usually they run under 15MPH.

FactoryFarmer · Jun 14, 2012

I don't know what A's you guys have been driving around but my 45 went 16-18 without mashing on the governor and my cousin and a couple other people that I go with on tractor rides had A's that went just as fast.

Meangreen · Jun 14, 2012

I'm just going by what my hand held GPS told me. I could have probably gone 18 downhill as my govenor never could really keep up with the tractor.

bigboreG · Jun 14, 2012

the late As are slower than the midstyled ones. my 49 is the fastest tractor i own.

pbb · Jun 14, 2012

I sure wished my unstyled 37 A would run that kind of speed.Mine will do 6 mph on the gps will top out at 8 mph while pushing on the govener .I got 14.9-38 rears on it. I"m looking for a overdrive. I can"t do any tractor rides.

Anonymous-0 · Jun 14, 2012

I have one very late long hood and a '44 steel tag & like you said... the mid series are faster than the late. These are my fastest tractors. Have never timed 'em but they out run the B's, late A's, the 70D & the WC with nooooo trouble! Of the fleet here, only the 4020D out runs 'em. I've had 'em on more than one tractor tour. Tough to keep the governor from getting confused & keep them from surging so I use the old WC flat top for tours.

larry duda · Jun 14, 2012

All the A s I ve seen on tractor drives are lucky to do 12mph going down a hill. Larry

pbb · Jun 14, 2012

I know my buddies 52A will do 13 mph on 36 rears.

BushogPapa · Jun 14, 2012

Well, I can say that anything over 12 MPH on an early Row-Crop tractor is an accident ready to pick a Place to Happen...
Grandad had a Farmall "H" that wust have been born half Airplane...Never did even get close to 1/2 throttle in 5th with that one...it would FLY, I think..!
My 720 D gets mighty "Touchy" at anything over 12 MPH..even though it will go faster..I am NOT going there...!!
We don't want OR Need reading about any accidents with farm Equipment involved..
BE Careful..."THIMK"..

Ron..

BushogPapa · Jun 14, 2012

Well, I can say that anything over 12 MPH on an early Row-Crop tractor is an accident ready to pick a Place to Happen...
Grandad had a Farmall "H" that wust have been born half Airplane...Never did even get close to 1/2 throttle in 5th with that one...it would FLY, I think..!
My 720 D gets mighty "Touchy" at anything over 12 MPH..even though it will go faster..I am NOT going there...!!
We don't want OR Need reading about any accidents with farm Equipment involved..
BE Careful..."THIMK"..

Ron..

ffdfireman18 · Jun 15, 2012

That is way I would actually like the gear down a bit. I'm not looking to run it on the Bonneville salt flats. I honestly think it would go just about 25 mph pushing it hard. I never ran it full open. Your right it does get to be a handfull at that speed, that's way I think I'll keep it out of 6th gear. I would just like a bit more gearing for pulling. I had to laugh when I went to rake hay with with it, and my uncle said he would run maybe 4th gear or so( he has a B, and has never seen mine run). It was 2nd at 3/4 throttle or 3rd @ 1/4 throttle if the ground was smooth enough. Thanks for the input guys. Enjoy the day.

ffdfireman18 · Jun 15, 2012

That is way I would actually like the gear down a bit. I'm not looking to run it on the Bonneville salt flats. I honestly think it would go just about 25 mph pushing it hard. I never ran it full open. Your right it does get to be a handfull at that speed, that's way I think I'll keep it out of 6th gear. I would just like a bit more gearing for pulling. I had to laugh when I went to rake hay with with it, and my uncle said he would run maybe 4th gear or so( he has a B, and has never seen mine run). It was 2nd at 3/4 throttle or 3rd @ 1/4 throttle if the ground was smooth enough. Thanks for the input guys. Enjoy the day.

gtx1967jewison · Jun 15, 2012

Check your engine speed! Its supposed to be 975 rpm at full throttle, lots have been turned up.

navyreteocs · Jun 15, 2012

Some of MM red nose Us had a real big gear 38 miles per

BushogPapa · Jun 15, 2012

A friend's JD "R" will top-out at about 16 or so...

Like driving a big heavy Car..!!

Anonymous-0 · Jun 15, 2012

We had a 49 JD A with 14.9- 38's and in road gear it ran at 18 to 20 mph.

buickanddeere · Jun 15, 2012

(quoted from post at 23:20:29 06/13/12) I have a 45 JD A ser#558344. It has the six speed transmission in it. In the manual with 11-38 tires, the top speed is 12 3/4 mph. Mine has 12.4-38 tires and when you put it in sixth gear it will go 22-23 mph. About 9-10 mph in 4th. Most all the work is done in 1st or 2nd gear. Is it an option or something to have a high speed rear end in it? If so, any ideas on how the gear it down a bit. Thanks for he help.

2-23 kilometers per hour is approx 14mph. Any chance the gps units were switched?Every now and again the cops pull over somebody doing 90mph in a 90 kph zone when the dash is accidentally switched to imperial.

buickanddeere · Jun 15, 2012

(quoted from post at 23:20:29 06/13/12) I have a 45 JD A ser#558344. It has the six speed transmission in it. In the manual with 11-38 tires, the top speed is 12 3/4 mph. Mine has 12.4-38 tires and when you put it in sixth gear it will go 22-23 mph. About 9-10 mph in 4th. Most all the work is done in 1st or 2nd gear. Is it an option or something to have a high speed rear end in it? If so, any ideas on how the gear it down a bit. Thanks for he help.

2-23 kilometers per hour is approx 14mph. Any chance the gps units were switched?Every now and again the cops pull over somebody doing 90mph in a 90 kph zone when the dash is accidentally switched to imperial.

John Deere A top speed question

Member

Member

Member

Well-known Member

Member

Member

Member

Member

Well-known Member

Member

Member

Well-known Member

Well-known Member

Member

Member

Well-known Member

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Similar threads