880 ground speed

billet-boy · Apr 30, 2012

I did some looking in old post on MPH and found one for a 770 by sws55
from the Oliver Operator's Manual Agricultural & Industrial 770 and 880 Tractors my tractor numbers are 48-0010 top line and 7923873 bottom line thanks

billet-boy · May 1, 2012

(quoted from post at 07:57:33 04/30/12) I did some looking in old post on MPH and found one for a 770 by sws55
from the Oliver Operator's Manual Agricultural & Industrial 770 and 880 Tractors my tractor numbers are 48-0010 top line and 7923873 bottom line thanks

any help?

ss55 · May 1, 2012

Billet-boy,
I just have that Operator's Manual #S1-4-10 issued 1-23-59. On pages 1-18 thru 1-21, if the last two digets of the tractor serial number (bottom number 00-000-000) are 73 you have an 880 Row Crop with 10/47 beveled gears and Power Booster? If so on page 1-21 your ground speeds at 1750 rpm, 15.5-38 tires and zero slippage should be:

Direct / Power Booster
1st 2.07 / 1.57 MPH
2nd 2.48 / 1.88
3rd 3.85 / 2.92
4th 4.62 / 3.50
5th 7.00 / 5.31
6th 13.05 / 9.90 MPH

Reverse gears
1st rev 2.40 / 1.82 MPH
2nd rev 4.46 / 3.38 MPH

Do those speeds sound about right for what you have?

Your shift pattern is?

6 R2
N
3 4

5 R1
N
1 2

Hope this helps. If someone else has better information please jump in.

ss55 (was sws55)

johns · May 2, 2012

My Super 88 with 14.9x38s and will go about 15mph. I also increased the rpms to get to this speed. My 880 is noticeably slower, due to a couple factors. I think the 880 has lower gearing, and also 15.5s are actually shorter and wider than a 14.9. I'm guessing an 880 is probably 12-14 mph.

billet-boy · May 2, 2012

(quoted from post at 19:12:04 05/01/12) Billet-boy,
I just have that Operator's Manual #S1-4-10 issued 1-23-59. On pages 1-18 thru 1-21, if the last two digets of the tractor serial number (bottom number 00-000-000) are 73 you have an 880 Row Crop with 10/47 beveled gears and Power Booster? If so on page 1-21 your ground speeds at 1750 rpm, 15.5-38 tires and zero slippage should be:

Direct / Power Booster
1st 2.07 / 1.57 MPH
2nd 2.48 / 1.88
3rd 3.85 / 2.92
4th 4.62 / 3.50
5th 7.00 / 5.31
6th 13.05 / 9.90 MPH

Reverse gears
1st rev 2.40 / 1.82 MPH
2nd rev 4.46 / 3.38 MPH

Do those speeds sound about right for what you have?

Your shift pattern is?

6 R2
N
3 4

5 R1
N
1 2
Hope this helps. If someone else has better information please jump in.

ss55 (was sws55)

I will let you know i have a speedometer on it and tach so i will go down the drive tonight thanks for all the info.

billet-boy · May 3, 2012

(quoted from post at 19:12:04 05/01/12) Billet-boy,
I just have that Operator's Manual #S1-4-10 issued 1-23-59. On pages 1-18 thru 1-21, if the last two digets of the tractor serial number (bottom number 00-000-000) are 73 you have an 880 Row Crop with 10/47 beveled gears and Power Booster? If so on page 1-21 your ground speeds at 1750 rpm, 15.5-38 tires and zero slippage should be:

Direct / Power Booster
1st 2.07 / 1.57 MPH
2nd 2.48 / 1.88
3rd 3.85 / 2.92
4th 4.62 / 3.50
5th 7.00 / 5.31
6th 13.05 / 9.90 MPH

Reverse gears
1st rev 2.40 / 1.82 MPH
2nd rev 4.46 / 3.38 MPH

Do those speeds sound about right for what you have?

Your shift pattern is?

6 R2
N
3 4

5 R1
N
1 2

Hope this helps. If someone else has better information please jump in.

ss55 (was sws55)

Ok I have taken out the power booster and have 15.5 38 tires

1st gear at 1750 rpm 1.7 mph
2nd gear at 1750 rpm 2.2 mph

880 ground speed

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