Topic: SOLVED: si_388 - Büssing-OM - Lupetto 33/35 - by Ernst Auwärter

[sichel]

"35" is already quite good, do you also have an (animal) name?

[fromwien]

Leoncino

[sichel]

No

[fromwien]

Tigrotto

[sichel]

No. Unlocked
Still Locked I found two solutions in two sources... One is the Tigrotto and the other???

[fromwien]

According to my sources (and several proofs also of the puzzle car I former attached with a brochure copy) the Büssing-OM story looks like that:

In 1964 Büssing startete the OM sales in Germany with following models:
'Cerbiatto 20' (2 ton payload), 70hp or 80hp
'Lupetto 27' (2,7 ton payload), 80hp
'Lupetto 33' (3,3 ton payload), 80hp
'Leoncino 35 and 38' (3,5 and 3,8 ton payload), 85hp
'Daino 40 and 45' (4 and 4,4 ton payload), 85hp
'Tigrotto 48 and 55' (4,8 and 5,5 ton payload) 85hp

Additional from 1965/66 on:
'Lupetto 33' (3,3 ton payload), 85hp
Daino 44' (4,4 ton payload), 85hp

From 1969 on, the animal-designation was no longer used by Büssing-OM. The productswere called as follows:
BS-OM 20 (2 ton payload), 70hp or 80hp
BS-OM 27 (2,7 ton payload), 80hp
BS-OM 35 (3,5 ton payload), 85hp
BS-OM 40 (4 ton payload), 85hp
BS-OM 45 (4,4 ton payload), 92hp

The way to the solution:
1) As you were asking me for an animal-name, the chassis of the puzzle car must be from before 1969. (see attachment)
2) According to the brochure of the puzzle-car, it used the 85hp, 4397ccm, 108mm x 120mm, CO2D engine. (the +1969 cars were equipped with the 4560ccm, 110mmx120mm engine 8see attachments)
3) This engine has only been used by Büssing-OM up to 1969 with the Leoncino, Daino and Tigrotto-models
4) During guessing, you told me, that '35' (for payload 3,5 tons) is correct and 'Leoncino' the wrong answer (see attachment Büssing-OM Leoncino Borsani bodywork)
5) So only 'Daino' and 'Tigrotto' are left, using the 85hp engine. 'Tigrotto' is one of the your possible choices, so usually 'Daino' should be the second one.
6) Unless '35' is correct, but '33', then the 'Lupetto 33' with the 85hp engine would also be a useful answer (see attachment)
Conclusion:
If '35' is correct, I will try 'Daino'
If '33' is correct, my answer would be 'Lupetto' (Borsani used Lupetto-chassis for bus-building)

Very tricky, isn't it?

[sichel]

I am aware of the somewhat complicated history of the OM-Büssings. One of my sources mentions another 35 model for 1967...

[fromwien]

The complete OM-animal farm:
All of these below, are not the right ones, you say:
Lupetto 25, PTC 5,0 t, CU 3,0 t,
Leoncino 30, PTC 6,0 t, CU 3,5 t,
Leoncino 35, PTC 6,5 t, CU 4,0 t,
Daino (Wildleder) 40, PTC 7,0 t, CU 4,0 t,
Daino 45, PTC 7,5 t, CU 4,5 t,
Tigrotto 50, PTC 8,0 t, CU 5,0 t,
Tigrotto 55, PTC 9,0 t, CU 5,5 t,
Tigrotto 65

There are of all of them only two left:

But due to my sources, the "Orsetto" 15 (PTC 3,5 Tonnen, Nutzlast 2 Tonnen) war never one of the Büssing-OM program.

So only:
'Cerbiatto' is left. Usually a 2,5 ton payload-type..

[sichel]

According to a standard work on German trucks, there was briefly a 3.5 t payload version that is still missing from your list. The book from which the puzzle picture was taken also mentions this model as a 3.5 t version.

[fromwien]

Ok. I trust in you and I'm really looking forward to the solution.

So my last question will be: Is it the 'Lupetto 35' from end of 1967? (found that they have changed the designation fron 33 to 35 then. But that already had the new CO3 engine, and the original brochure I posted of the Auwärter bus, shows the data for the CO2D engine!

[sichel]

The name is in your list, but the payload is missing.

[fromwien]

Ok. I trust in you and I'm really looking forward to the solution.

So my last question will be: Is it the 'Lupetto 35' from end of 1967? (found that they have changed the designation fron 33 to 35 then. But that already had the new CO3 engine, and the original brochure I posted of the Auwärter bus, shows the data for the CO2D engine!

So do you mean that one above??

[sichel]

Sorry, I didn't read the answer carefully enough. Yes, the puzzle bus is based on a Büssing-OM Lupetto 35. This your next point.

[fromwien]

Thank you very much for the point.

But to be honest, I am still very pretty sure, that this solution can't be the correct one.

1) The technical details on the second page of the original brochure/leaflet of the puzzle car clearly describes, that a 4,4-litre engine with 85hp it used. This is the CO2D or CO2D1 engine type.
2) The short-lived 'Büssing OM Lupetto 35' from 1967 to 1968 used the next generation engine, type CO3/24, 4561ccm, 87hp (see article 'Last & Kraft 3/2021 with data-table).

Technical data of the puzzle bus attached, as also small part of the OM article out of Last & Kraft 3/2021

[fromwien]

Additionally: There was a Büssing OM Borsani bus available based on Leoncino-chassis in 1965.

[sichel]

My source is "Historischer Kraftverkehr" 01/2023. I have no reason to doubt the seriousness of the two authors. The version from your data sheet must not have been the last and only one, especially for a manufacturer who built very small series and was also receptive to special requests. Among other things, the literature also mentions E. Auwärter buses based on Tigrotto...

[fromwien]

Sorry, please be so kind, and pay some attention and read other offered sources as well carefully, which are not out of any magazines or books, but are FACTORY BULLETINS and FACTORY BROCHURES.
During working as a jounalist for automobile magazines, I often came and come across strange and incorrect content in today's literature during my ever careful research work. That's why I much prefer to rely on original literature from the manufacturer or from the time when the researched vehicle was new available.

Please be so kind and don't ignore:
1) The original brochure of the puzzle car, where you used the front cover for showing the puzzle car. I offered for all interested parties the  data sheet on the back side of the brochure. I hope you will agree, that the content of this document will be correct and corresponds to the puzzle car?
2) Next documents are again factory brochures, showing the Lupetto 27 and 33, using the same engine as the puzzle car (see also brochure of the puzzle car). I hope you may once again agree, that these factory documents will be correct in details.
3) You are absolutely right, that for a short period (1967-1968) the 'Lupetto' has been offered as 'Lupetto 35'. But at this time the Lupetto was equipped with next generation's engine CO3/24. That differs completely with the datas of the puzzle-car's brochure

I politely ask for your understanding that I don't necessarily want only doubt your knowledge, but a really researched result should being worked out for everyone interested. In the case of uncertainties, this can also include several solutions, as long as there isn't a secure proof available at the moment.

I'm just always a bit cautious with magazine articles, because they often have to be created by very enthusiastic authors for little money in very short time, and often there isn't enough time to do further research if there's any uncertainty.

[sichel]

I have changed the title.