750a parts thread

cows sh#t me to tears

Member
Livestock Farmer
Shouldn't be too hard. Any engineering company should be able to knock one up. It was a pretty small company that made mine. All i did was take the top off and run that in for them to copy the folds and holes so that it just bolted straight up. A 30 cm high extention will give you an 800 litre increase (2300 standard).
 

Big-Al

Member
Getting a bit of a cold shoulder on this one, as i know a few have been made for 750a drills on this forum, not quite sure why though, as i only asked politely, but should be able to get someone to do it in the area in the next week hopfully.

Regards
 

No Worries

Member
Location
Cheshire
Anybody know if a good supplier for press/closing/depth wheel bearings?

Need quite a few on mine now... I guess it’s due to the amount of work it’s done in its previous lives!
 

Clive

Staff Member
Arable Farmer
Location
Lichfield
Anybody know if a good supplier for press/closing/depth wheel bearings?

Need quite a few on mine now... I guess it’s due to the amount of work it’s done in its previous lives!

they were all replaced when we had it with OE JD ones imported from Needham in the USA

they don't last long though, our drill needs some closing wheel and depth wheel ones already
 

H.Jackson

Member
Location
West Sussex

Not sure if this link will work webinar by exapta through no-till magazine subscription.

Interesting Mar Hagny recomends putting a on size up metric bolt in the seed boot pivot as tne first thing he would do to a newly delivered 750A, plus running the frame slightly front high to give a slightly more vertical exit for seed. Also a lot of selling of exapta products but well explained I thought.
 

Simon Chiles

DD Moderator

Not sure if this link will work webinar by exapta through no-till magazine subscription.

Interesting Mar Hagny recomends putting a on size up metric bolt in the seed boot pivot as tne first thing he would do to a newly delivered 750A, plus running the frame slightly front high to give a slightly more vertical exit for seed. Also a lot of selling of exapta products but well explained I thought.

If you listen carefully he keeps contradicting himself, if you run the frame slightly raised at the front you’ll end up with uneven seeding between front and rear gangs resulting in uneven emergence, something he was keen to avoid. It’ll also push the boot further into the furrow increasing side wall compaction and increasing boot wear. His problem of the seeds exiting the boot too far back or being blow out of the furrow is easily sorted by adjusting fan speed according to your seed size. I’d also dispute his claim that it’s difficult to over pressurise the coulter, admittedly it’s an art to get the right pressure but it’s certainly not difficult with a bit of experience. Although he was correct in saying that the original press wheels were too wide he goes on to state that Deere’s solution was then too narrow. The reality was that the prototype press wheels were actually the right shape ( I requested that they made them like it ) but unfortunately they made the tyre hollow and it flexed too much. It also didn’t last very long, one sharp stone and it ripped to shreds. It took Deere about 7 years after I told them that they needed to be solid before they came into production which allowed other aftermarket designs to come onto the market.

Apart from fitting the Guttler closing wheels most of the issues he raised have been sorted especially if you pay careful attention to actually setting the drill up correctly, it’s a tool that by paying close attention to detail can improve the results dramatically.

I do wonder whether fitting a metric bolt to the seed boot pivot, especially if it was softer, might make the coulter arm holes last longer before they become elongated. The original JD bolt is very hard and probably much harder than the arm.
 

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