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Misigin 29761 61 Ursus 510 prototype either
Ursus 510 prototype
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Re: Ursus 510 prototype
U know a lot about Ursus tractors, Alex. Have u got any
others pictures of Ursus tractors? I never sow that
prototype, where did u get it? :-)
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Re: Ursus 510 prototype
Is that the famous Ursus prototype, made in the years of
taking infamous license from MF? As I can remember the
article from M³ody Technik (mo¿e ma ktoĊ“ ten numer, w którym
opisane by³y prototypy polskich ci¹gników? By³ te¿ jeden
numer MT z GENIALNYMI zdjêciami c-385, 1012 i 1014,
widzia³em na pchlim targu w W-wie, do tej pory serce mnie
boli ¿e nie kupi³em)said, that it was the most modern
tractor of these days in that category (found as that not
only by polish propaganda-press, but also by experts from
Western Europe). But, unfortunately, photos not included.
Can anyone have also any photos of "ROLA-25" prototype (I
think it was developed as the alternative for C-325 "Big
Nose")?
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Re: Ursus 510 prototype
To answer lasr year's question (which I missed- sorry!), I
got this picture from an old Polish magazine dating from the
late 1970s.

One of these prototypes (perhaps the one in the picture) is
in the Ursus factory museum (which includes the first model
of Ursus tractor, built in 1922). The 510 was meant to be
one of a new range of tractors developed at the end of the
1960s to fit in between the C-4011/C-355 & the C-385 (heavy
range). However, it was decided instead to buy a licence
from Massey Ferguson (in 1974). I have heard that this was
done for political reasons.
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Re: Ursus 510 prototype
Yes, political reasons...If You would like to blame one
person, I think it could be tow. Edward Gierek only :-).
Everyone (here) know that MF never fit to Polish farmer's
needs. If one had to choose between c-360 3P and Mf 255, It
was almost guaranteed that he have chosen c-360-3P (If he
had received so called "talon" of course:-D) Cheaper, with
bigger wheels and better located the wieght-center. In
harder conditions (for example working on heavy soils with
U024 Sokó³, U039 or U043 Pelikan plows), MF-255 used to rise
front wheels, C-360 - didn't.
I know that the range of these tractors (U prototype
series) included: 30, 45, 60 and 75 hp. They had the best
weight-to-horsepower rate in it's class, comfort ROPS
cabines with everything You could dream about in those years
(it sounds quite paradoxally, but Ursus have taken license
without cabines, and it couldn't make any changes to
mf-licensed tractors ("Masej" or "Masaj" in Polish
countryside, sometime You can hear even about "Masaj
Ferbuson" :-D ) for long time). One of most important things
was the fuel consumption, if it was better than
Ursus/Crystal tractors, then these machines could be
competetive even to today's tractors. Development started in
68 and stopped 72-74. I will take photos of that machine
when I go to the URSUS factory museum... (Monday, I hope...)
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Re: Ursus 510 prototype
Hey guys.. Was this Ursus an actual ursus development, or
another imitation of a Zetor design ??

In the C-4011 the resemblance with the Zetor 4011 is clear.
The C-355/C-360 and Zetor 5511 is also clear. Also the C-362
?? and Zetor 6011 are very much identical, most parts of
these tractors are interchangeable.

Is this 510 a totally new tractor ??
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Re: Ursus 510 prototype
Hi Renze!
I doesn't looks like You say.
C-4011 IS a license-built tractor, under license of Zetor,
of course.
C-355 and C-360 were developed from C-4011, (my grandpa had
the tractor which was the mix of all af those three, it even
had some parts of Zetor). This license was intented to be a
short-time solution, but...
Those prototypes were built from-the-ground by URsus, I
think, as the final solution.
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