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Author Topic: SOLVED: si_036 - Adler RS 250 wc - 1955  (Read 1232 times)

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Offline sichel

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SOLVED: si_036 - Adler RS 250 wc - 1955
« on: July 19, 2021, 03:34:39 PM »
What a pretty little racer! Which manufacturer? Which engine? Which year of construction?
« Last Edit: August 05, 2021, 04:00:07 PM by sichel »
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline sichel

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Re: si_035
« Reply #1 on: July 27, 2021, 02:38:24 PM »
Experts can identify this beauty?
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline sichel

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Re: si_036
« Reply #2 on: August 03, 2021, 05:20:02 AM »
Or do the professionals?
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #3 on: August 03, 2021, 06:27:31 AM »
German 2-stroke?
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Offline sichel

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Re: si_036
« Reply #4 on: August 03, 2021, 06:52:12 AM »
Yes!
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #5 on: August 03, 2021, 10:32:12 AM »
Three-cylinder DKW?
« Last Edit: August 03, 2021, 11:10:26 AM by fromwien »
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Offline sichel

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Re: si_036
« Reply #6 on: August 03, 2021, 11:36:25 AM »
No, sorry.
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #7 on: August 03, 2021, 05:23:49 PM »
Then NSU? (bad eyes..thought to see one lying cylinder between two upright ones..)
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Offline sichel

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Re: si_036
« Reply #8 on: August 04, 2021, 04:17:50 AM »
Do you wear glasses?  ;)  As far as I know, NSU never built 2-stroke-racers.
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #9 on: August 04, 2021, 05:07:35 AM »
Yes, you are right! I wear glasses, but have to put them on..
And again you are right: Stupidly I did forget to have a look at your previously answer..
Two more goals for you.. and I hope one for me:

MZ connection?
« Last Edit: August 04, 2021, 05:24:46 AM by fromwien »
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Offline sichel

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Re: si_036
« Reply #10 on: August 04, 2021, 07:33:59 AM »
Sorry, I have to correct my statement on NSU racers:
In 1951 there was a short intermezzo with Lambretta 2-stroke scooters, converted for racing. One of the attemts for a new start in racing. First race in Dieburg was the first and only victory. Third race in Ingolstadt was a total failure and they withdrew the racing Lambretta.
Btw.: Winner in Ingolstadt was a certain Werner Haas on a self-tuned double-piston Puch...
Actually, I wanted to take pictures of the little racer, but maybe I can use them again...

But now back to the current puzzle: There is no MZ connection, except perhaps mutual theft with eyes...
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #11 on: August 04, 2021, 04:42:42 PM »
Thanks for information about the NSU-2-stroke-racers. Didn't know about.

Is this an Adler racer?
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Offline sichel

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Re: si_036
« Reply #12 on: August 04, 2021, 04:55:17 PM »
Yes, it is! Locked for you, waiting for more details.
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #13 on: August 04, 2021, 05:08:00 PM »
250 RS 1956 (thermosiphon watercooled with two small radiators air feeded by the small round holes In the front fairing)?
« Last Edit: August 04, 2021, 05:33:22 PM by fromwien »
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Offline sichel

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Re: si_036
« Reply #14 on: August 04, 2021, 06:09:09 PM »
Adler RS 250 watercooled is nearly a bull's eye! But I have an earlier year of construction, the fairing makes the difference. Can you describe the difference?
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: si_036
« Reply #15 on: August 05, 2021, 02:42:47 AM »
It's the "Delphinverkleidung" ("dolphin-fairing") prior the "Vollverkleidung" ("full-enclosure-bodywork"), 1955
« Last Edit: August 05, 2021, 03:07:01 AM by fromwien »
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Offline fromwien

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Re: si_036
« Reply #16 on: August 05, 2021, 03:13:59 AM »
Here in comparison the difference shown on another example (NSU)
« Last Edit: August 05, 2021, 03:17:33 AM by fromwien »
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Offline sichel

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Re: si_036
« Reply #17 on: August 05, 2021, 03:57:47 PM »
This is your next goal! A great piece of work. Yes, it is the 1955-version: watercooled with dolphin-fairing and duplex front-brake. Thanks for the comparison using the example of NSU Max. I particularly liked this: My first vehicle was a NSU Max and my best friend started at the same time with a Adler M 250. I'll show you the '55-model as a naked bike and a version from the beginning of 1956 with full fairing. I did not found any picture of this version in racing. In the late 50s, full fairing was banned, the motorbikes became very sensitive to side winds as a result.

 
« Last Edit: August 05, 2021, 04:59:24 PM by sichel »
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: SOLVED: si_036 - Adler RS 250 wc - 1955
« Reply #18 on: August 06, 2021, 01:34:39 PM »
Thanks for this very interesting puzzle! Never before, I saw a picture of the Adler 250 RS with "dolphin-fairing"!
The air-cooled version of the Adler 250RS-engine served as a base for Yamaha's later very successful 250-race-engines
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Offline sichel

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Re: SOLVED: si_036 - Adler RS 250 wc - 1955
« Reply #19 on: August 07, 2021, 05:13:25 AM »
Yes, it was fun to follow the development of the solution. The first series-produced Japanese two-stroke twins (Suzuki, Yamaha) have looked very, very similar to the Adler engines.
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline sichel

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Re: SOLVED: si_036 - Adler RS 250 wc - 1955
« Reply #20 on: November 13, 2021, 06:52:31 PM »
A look behind the scenes.
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Ein Henschel zieht am Berg und ein Mercedes
an den Türen. (and an attempt of a translation):
A Henschel in rushing up the hill, wheras in a Mercedes wind is rushing through the doors. c/o norberthanke

Offline fromwien

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Re: SOLVED: si_036 - Adler RS 250 wc - 1955
« Reply #21 on: November 14, 2021, 03:51:34 AM »
 :thumbsup:
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