DB1212

The place to discuss all matters relating to David Brown Tractors. You will need to register your user name before you can post. If you have already registered could you please make sure that your location details have been completed. Go to My Account in the Main Menu on the left, and then go into "Edit Your Information" and complete your location details. Give the Country (and State/Province if you wish) if outside the U.K. County if within the U.K. Location details helps other members if you need spares, technical advice, or the nearest practical help.

DISCLAIMER -

David Brown Tractor Club Ltd
Forum/website Disclaimer

1. This [forum/website/chat room] and the advice and opinions expressed herein is not a solution for mechanical, electrical, valuations, other problems, breakdowns or issues experienced in relation to the vehicles referenced.

2. If reliance is thought to be placed on any of the information guidance or input provided such information will be expressly confirmed as appropriate to be relied upon.

3. In the absence of any such confirmation no reliance should be suggested or inferred.

4. Members must not disclose information to 3rd parties in anticipation that reliance will be given by non-members.

5. Non-members must not purport to give advice on behalf of David Brown Tractor Club.

6. If you or someone you know is experiencing difficulties or repeated breakdowns you must seek assistance for an appropriately qualified expert who holds themselves out as such.

7. Any comments are free of charge and made or posted on an ex gratia basis. No member or non-member may advertise their professional services

Any user inactive for more than 3 months will automatically be deactivated, please contact admin@dbtc.co.uk if you would like to be reactivated.

Please be aware that your user name and entered location can be seen by all members. We only store information you have entered which is your email address and username, your IP is also stored, we have no access to private passwords.

If you do not agree with your information being stored, please do not register an account, If you wish to unsubscribe at any time please email admin@dbtc.co.uk giving your username.

Amended 27/10/18

Moderators: Segrie61, admin

User avatar
tomwill
Posts: 483
Joined: Fri Jul 23, 2010 8:33 pm
Location: Australia.

DB1212

Post by tomwill » Wed Dec 02, 2015 1:19 am

Hello everyone Xmas is closing in fast, I thought I might buy myself another DB looking at a DB1212 looks very clean and straight[white and orange]I do not think it will much money as to the area it is in, any comments on this model, I know the hydra shift can be an issue as out in this country some fellows could not drive a billy cart !!! Cheers TomWill DBTCA

User avatar
ollek
Posts: 3820
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

RE: DB1212

Post by ollek » Wed Dec 02, 2015 10:02 am

The tractor is really a 1210 with a Hydra Shift gear box. The engine is the same as in 995 and 996, but the 1210 and 1212 has a in line injection pump. The clutch in a 1212 is the same as in 1210 and 996. The hydraulic system is the same as in all Selectamatic tractors. The difference is that the 1210 and 1212 have a hydraulic pump driven off the front of the crank shaft. The only issue I can think of, is that some 1210 tractors experienced broken crank shafts. The most common reason for this was that people was constantly lugging down the engine. Lugging down the engine in a 1212 is not necessary as the shifting down ís so easy. But, some users did not realize this and they used the tractor as it would have a normal gear box. There is not very match to go wrong if the tractor has been used and maintained correctly. And well, the age of the tractor can on its own give some issues, but this is well known by us all.

Scooby
Posts: 3929
Joined: Tue Jan 03, 2006 8:16 pm
Location: Warwickshire

Post by Scooby » Wed Dec 02, 2015 10:26 am

Hello Tom, hope all is well over there. I had quite a few 1212 tractors over the years when I was running my contracting business and would always buy another one. But there are a couple of issues that you need to be aware of, one already has been mentioned. I did have one that the crank went on. It was a nearly new tractor and so a warranty job but I was told, unnoficially, that DB were experiencing a few crank problems at the time. Never had the problem again on any other 1212s.

It is really all about how the tractor has been driven and serviced. But one thing that I have encountered on hydrashift tractors is hardening of the seals in the clutch packs. The symptoms are being slow to change between certain gears and slippage when they do go in. They are O.K. when warmed up though and so the secret is to go and visit the tractor when it's cold and start it up and drive it around, preferably in top gear and go through the hydrashift box, ideally along the road. That way the transmission will be cold and if the seals have gone hard the clutch packs will slip until she gets warm.

Good luck and Happy Christmas. David.
ImageImage


Three is twee, four does snore, but 6 just clicks........Scooby

Guest

Post by Guest » Wed Dec 02, 2015 11:01 am

The engine in the 12 series tractors are not the same as the 9 series tractors, they are an uprated variant of the earlier 1200 and have many differences. You can't put a quart in a pint pot!

User avatar
ollek
Posts: 3820
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Post by ollek » Wed Dec 02, 2015 11:14 am

The 995, 996, 1200, 1210 and 1212 all have the 4/55 engine. This same engine was also used in the later 990 models. The engines are the same, the differences is in the settings of the rotary injection pump (9-series) and in that the 1200, 1210 and 1212 have an in line injection pump. All mechanical parts in the 4/55 engines are the same, regardless of witch tractor model the engine is fitted to. It would be nice to know what these "many differences" are. I would like to see a list of the so called differences.

Guest

Post by Guest » Wed Dec 02, 2015 12:14 pm

The later 990 employed the 4/49 engine, not the 4/55. The differences between the 12 and 9 series engines are the crank journals and associated parts having been 'beefed up' and many other components to withstand the higher hp. The 995 engine is a 4/55051, 996, 4/55071, 1210, 4/55001 and the 1212, 4/55031.

User avatar
ollek
Posts: 3820
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Post by ollek » Wed Dec 02, 2015 12:28 pm

I have to correct myself. All 990 models had the 4/49 engine (short stroke). The earlier 1290 also had the 4/49 engine and the later 1290 tractors had the 4/55 engine (long stroke). The bigger crankshaft and stronger pistons and other changes came in when the turbocharged engine was introduced for the 1410 and 1412. This engine was the 4/55T (T for turbo). The engine types you have listed are all 4/55 engines and have the 100 mm cylinder diameter and a 114,3 mm stroke. The 4/49 engine had a 100 mm cylinder diameter and a 101,6 mm stroke. The difference between the 4/49 and 4/55 engines is the trough of the crankshaft and the positioning of the gudgeon pin to give different stroke. The main and crank bearings are the same(same diameter) in both engine types. And by the way, the numbers in the engine type after the 4/49 or 4/55 relates to different injection settings and different clutches and other engine accessories and has nothing to do with the basic engine.

Guest

Post by Guest » Wed Dec 02, 2015 1:24 pm

Not all 990's had the 4/49 engine, you're forgetting the earlier 4/47. The 4/55 engines were basically the same engine block casting with varying internal differences depending on the model. The 14 series engines were 4/55011 and the letter T does not appear on them and were still 72hp as the 1210, 1212, the engine power increased to 83hp with the introduction of the 1490.

Tom, the 1212 is a very good workhorse, a bit 'sluggish' but a reliable 'plodder' and we all know the pro's and con's of the Hydra-Shift gearbox.

User avatar
ollek
Posts: 3820
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Post by ollek » Wed Dec 02, 2015 1:58 pm

Be carefully in your statements. The engine in the 1410 and 1412 was designated 4/55T in different literature from the manufacturer to differ from the normally aspirated 4/55. The turbo charged engine in the 1410 / 1412 had 91 hp. The engine in the 1210 / 1212 still had 72 hp and no turbo. The 1490 had a 4/55T turbo engine with 83 hp. The 1390 had a non turbo 4/55 with 67 hp.

broadsword
Posts: 1707
Joined: Thu Jun 12, 2008 9:17 pm
Location: Holmfirth, Huddersfield

Post by broadsword » Wed Dec 02, 2015 2:06 pm

I`d recommend one of them `big` Chamberlains Tom. :wink: .

Good Luck

Andy

Guest

Post by Guest » Wed Dec 02, 2015 2:41 pm

I don't know where you get the 91hp to for the 1410/1412, in the operator handbook it shows the engine develops 69.73bhp at 2000rpm (approximately 52Kw)

Anne
Posts: 280
Joined: Sun Jan 01, 2006 12:01 pm
Location: Acquoy, Netherlands.
Contact:

Post by Anne » Wed Dec 02, 2015 3:01 pm

PR, we've been down that road before, remember? I'm getting tired of correcting false info.

http://www.dbtc.co.uk/index.php?name=PN ... highlight=

http://www.dbtc.co.uk/index.php?name=PN ... highlight=
-DBTC member-
1969 DB 780 Selectamatic -
1981 DB 1190 Cab -
1985 Case IH 1494 Hydrashift 4wd -
1988 Case IH 1394 Synchro 4wd Comm. Edition -
2011 Case IH 1494 Tractorpulling Edition 250 HP!
1985 Case IH 2294 4wd 160hp

User avatar
ollek
Posts: 3820
Joined: Tue Apr 10, 2012 1:20 pm
Location: South West Finland

Post by ollek » Wed Dec 02, 2015 3:02 pm

The maximum power output for the 4/55T in a 1410 is 91 din horse power at 2300 rpm. If you do not believe me, look in the "Link to specifications" for 1410 by clicking on "DB Tractor Range" in the left hand column in this page. There is a graph that shows the engine hp on different engine revs (curve A). The power output on 2000 engine rpm is for 1000 rpm pto, not the maximum hp for the engine. The pto power is, according to the information, 72 hp and the engine hp must therefore be more than 72 hp on 2000 rpm. And as Anne have said, many of us are getting tired of having to constantly correct false information.

Scooby
Posts: 3929
Joined: Tue Jan 03, 2006 8:16 pm
Location: Warwickshire

Post by Scooby » Wed Dec 02, 2015 5:15 pm

Powerrabbit wrote:I don't know where you get the 91hp to for the 1410/1412, in the operator handbook it shows the engine develops 69.73bhp at 2000rpm (approximately 52Kw)
The 1400 series were always sold as a 91hp tractor. I think everyone would appreciate a bit of contrition for the above false assertion.
Attachments
1412001(small).jpg
1412001(small).jpg (95.57 KiB) Viewed 4482 times
ImageImage


Three is twee, four does snore, but 6 just clicks........Scooby

Guest

Post by Guest » Wed Dec 02, 2015 6:43 pm

I think that the confusion here in the hp ratings is that the quoted 69.73 is Imperial brake horsepower, the 91 figure is measured in DIN horsepower which is the Metric rating. There are several points at which power transmission can be measured and rating figures printed in the operators books can vary depending on how the measurement was taken.

Post Reply

Who is online

Users browsing this forum: No registered users and 16 guests