Author	[Modern View]
KGB 09-20-2012 10:40:57 107.1.77.118 Report to Moderator	I'm considering buying a NH 1495 haybine w/a planetary drive. What is a planetary drive and what advantages/disadvantages are associated w/these types of drives?" [Reply]   [No Email]
Sean in PA 09-23-2012 05:24:17 71.224.102.32 Report to Moderator	Re: planetary drive in reply to 8N'r--WI, 09-20-2012 10:40:57   Quoting Removed, click Modern View to see showcrop, I had no idea what that model haybine was, so I went and looked at the New Holland parts site, and it's listed as "1495 Self-Propelled Haybine Mower Conditioner". It came with its own engine (200 Ford gas, 256 Ford diesel, or a Perkins 4.236 diesel) and either a planetary gear drive or a hydrostatic drive. [Reply]  [No Email]
showcrop 09-23-2012 13:43:16 75.67.231.80 Report to Moderator	Re: planetary drive in reply to Sean in PA, 09-23-2012 05:24:17   Quoting Removed, click Modern View to see That certainly helps to explain it! [Reply]  [No Email]
Hobo,NC 09-21-2012 18:48:52 71.30.104.204 Report to Moderator	Re: planetary drive in reply to dmiller, 09-20-2012 10:40:57   It does not have to be a automatic to have a Planetary drive :roll: :roll: :roll: :roll:... Planetary drives are used in rite many tractors that are not auto... [Reply]  [No Email]
wisbaker 09-20-2012 13:05:19 207.118.134.25 Report to Moderator	Re: planetary drive in reply to KGB, 09-20-2012 10:40:57   Even older- Model T Fords used planetary gears in the transmissions. I used several different types of planetary gear boxes in the plant when we needed deep reductions to drive shafts or augers. In my experience they are more reliable than herringbone set ups. [Reply]  [No Email]
showcrop 09-20-2012 12:52:42 75.67.231.80 Report to Moderator	Re: planetary drive in reply to KGB, 09-20-2012 10:40:57   I would guess that it is a step down to reduce the RPMs down from a 1000 RPM tractor. I have never heard of planetarys in themselves causing problems. Have you looked at it to see what the input shaft coupling is? [Reply]  [No Email]
Dean 09-20-2012 12:03:30 152.216.3.5 Report to Moderator	Re: planetary drive in reply to KGB, 09-20-2012 10:40:57   Planatary gear systems have been around for well over 100 years, are mature technology and are used in just about all automotive/light truck transmissions as well as most modern farm tractors. Dean [Reply]  [No Email]
Sean in PA 09-20-2012 11:51:49 71.224.102.32 Report to Moderator	Re: planetary drive in reply to KGB, 09-20-2012 10:40:57   Planetary drive just means that there's a center gear (the sun gear), with multiple smaller gears around it (The planet gears) and an outer carrier with a ring gear around the outside of the planet gears, and the input to output gear ratio is achieved by locking or unlocking the sun, planet, and ring gears relative to each other. Most modern automobile automatic transmissions use a planetary gear system, as did the Ford Select-O-Speed tractor transmission, and the double reduction rear axle in the 1965 and later 4000/4600/5000/5600...etc. tractors had a planetary gear system as the final reduction out in the axle trumpets next to the brakes. A planetary gear system isn't necessarily evil in and of itself. I'm not familiar with the 1495 haybine, so I'm not sure exactly how the planetary gears are controlled to change the gear ratios on that model, but looking at the New Holland parts web site, it looks like it is a much simpler design than the Select-O-Speed transmission. there is only one planetary gear system in it, as opposed to 3 in the Select-O-Speed. Hopefully someone who has actually had one for some amount of time will chime in and let you know how reliable they are and what you might need to look out for. [Reply]  [No Email]
old 09-20-2012 11:24:10 209.86.226.19 Report to Moderator	Re: planetary drive in reply to KGB, 09-20-2012 10:40:57   Same basic system as the older Ford SOS type of transmission. Me I would run not walk away from it but I do not like the SOS system or for that matter any type of automatic transmission [Reply]  [No Email]
showcrop 09-22-2012 18:05:11 75.67.231.80 Report to Moderator	Re: planetary drive in reply to old, 09-20-2012 11:24:10   Quoting Removed, click Modern View to see I've been tearing up and down the road trying everything I can think of. How fast do I have to get going in 5th before my SOS will automatically shift into 6th. Do I need to get the bands adjusted? [Reply]  [No Email]