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Author Topic: Maker ?  (Read 1215 times)

john54

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Maker ?
« on: September 25, 2007, 02:52:23 PM »

Hi All
Been haveing a tidy up and found this old i.c motor.Has made in Germany on one side & .61 on the other with a makers mark witch i have not seen before.
As its of no use to me i need some info about it for E*ay
Any ideas ?
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anmo

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Re: Maker ?
« Reply #1 on: September 25, 2007, 03:21:25 PM »

That's an HP 61, and it looks to me like a fairly late version. HP stands for 'Hirtenberger Patronen', an Austrian munitions company who are situated in Hirtenberg somewhere south of Vienna. The 'Patronen' part of the name is the German word for 'cartridges'. These engines were produced as a sideline after the Company started making high power engines for military drones in addition to munitions. Probably one of the family was a modeller, and I think these engines first appeared 1970ish, they were very powerful, were the first (I think) to use Schnuerle porting, and were used by a few model flying and boating champions. I think they are still produced somewhere in California, no longer any connection with the original Hirtenberger Company as far as I know. Couldn’t even guess at a value.
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caution, may contain traces of nuts .....

ids987

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Re: Maker ?
« Reply #2 on: September 25, 2007, 04:15:04 PM »

Sorry, I have to differ. I believe it is HB rather than HP. Good info about the HP marque though. HB (Helmut Bernhardt Feinmechanik) were / are German. Mecoa acquired HP, and now produce HP engines in America. Mecoa also distribute HB - which appear to still be available. Many of the HB engines used what was known as PDP (Perry Directional Porting), which was a variation of loop scavenging, and pushed the performance of loop scavenged engines forward - before Schnuerle porting really took off. Just to add to confusion, both marques were very much of the same era. I think they were both distributed by Ripmax as well.
A couple of links for perusal....

http://www.mecoa.com/hb
http://www.mecoa.com/hp

Ian
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kayem

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Re: Maker ?
« Reply #3 on: September 25, 2007, 04:23:20 PM »

Sorry, I have to differ. It's a HB engine as opposed to HP. Good info about the heritage of the HP marques though. HB (Helmut Bernhardt Feinmechanik) were / are German. Mecoa acquired HP, and now produce HP engines in America. Mecoa also distribute HB - which appear to still be available.

http://www.mecoa.com/hb
http://www.mecoa.com/hp

Looks like you know more about model plane engines than most of us do, the 'Made in Germany' bit should have given it away, but I was another one who thought that the logo cast on the crankcase does look remarkably like the original HP one. Was there any kind of connection between HP and HB? I know that the later HB was also Schnuerle ported, so were these two quite distinct products from two unconnected manufacturers?
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ids987

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Re: Maker ?
« Reply #4 on: September 25, 2007, 04:35:45 PM »

Must admit, the "B" in the photo looks a lot like a "P". I recognised the engine, but I pinched some of the info from the Mecoa website. I seem to remember HP and HB from a very old Ripmax catalogue - along with Austro-Webra, who seemed to be doing similar things at the same time as HP (Schnuerle porting, ABC, rear rotor induction). It was a t0ss-up for me between the HP .40 and the Webra .40. The stuff of daydreams, and only daydreams for me, as both were beyond my means at the time (pocket / Christmas money), so a Merco .35 it was - my first marine engine.

Ian
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ids987

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Re: Maker ?
« Reply #5 on: September 25, 2007, 04:40:06 PM »

I'm not personally aware of any connection between HP and HB, but couldn't say for sure that there wasn't one.

Ian
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john54

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Re: Maker ?
« Reply #6 on: September 25, 2007, 04:52:36 PM »

Its a B used real cam not phone/cam this time.
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glennb2006

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Re: Maker ?
« Reply #7 on: September 25, 2007, 05:38:02 PM »

Does it run OK John54?

Regards,

Glenn
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john54

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Re: Maker ?
« Reply #8 on: September 25, 2007, 05:49:48 PM »

Cant see why not turns over like silk & vgood compression.
Not tooled up to try it any more.

Thanks again guys for all the info will list  @ w/end un anyone here wants it ? 
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