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Cruise Control for W123 Manual
Biocruzer Offline
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Location: Australia
#1
Cruise Control for W123 Manual
Hi, all!  Happy 2019!
Dunno whether the question is in the right forum or not: Does anyone out there know of a retro-fitted cruise control for a manual W123 converted from an auto? I still have the vacuum-operated CC 'switch' on the steering column, but would prefer something electronic.  Arduino, perhaps?
Cheers
01-03-2019, 05:32 PM
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baldur Offline
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#2
RE: Cruise Control for W123 Manual
I don't know what engine you are running, likely OM617, but on the EDC engines (OM605/OM606) I have cruise control built in to my DSL1 ECU, all that is needed to make it work is a couple of resistors and a pair of switches.
Baldur Gislason

01-03-2019, 09:08 PM
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frans-c Offline
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#3
RE: Cruise Control for W123 Manual
The Rostra 250-1223 is all you'll ever need. I actually installed one on my old W123 280E and used the stock cruise stalk. A bit pricey, but really worth having a look at.
01-07-2019, 06:07 AM
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Biocruzer Offline
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#4
RE: Cruise Control for W123 Manual
(01-07-2019, 06:07 AM)frans-c Wrote: The Rostra 250-1223 is all you'll ever need. I actually installed one on my old W123 280E and used the stock cruise stalk. A bit pricey, but really worth having a look at.

Thanks, Guys.  Mine is a 617 engine.  I've looked at the Rostra website, no info on Benzes, but I'll keep looking.
Cheers
01-08-2019, 04:06 PM
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frans-c Offline
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#5
RE: Cruise Control for W123 Manual
The Rostra is universal - just hook the actuator cable to the throttle linkage and the electrical connections. You can use the Mercedes-Benz cruise stalk with a few modifications - there's a specific forum thread elsewhere (just Google it).
01-08-2019, 04:17 PM
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NZScott Offline
HX30W 73/44mm
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#6
RE: Cruise Control for W123 Manual
http://www.peachparts.com/Wikka/CruiseControlRostra

I was going to install one of these in my car because I was doing 8.5hr road trips for the last few months but have moved back home so probably won't bother any more.
I was wondering if the speed sensor could work off the crank, that way the engine might be useful for driving something when in neutral

1978 300D, 373,000km
OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (awaiting certification to be legal...)

1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km 'new' DD





01-09-2019, 12:35 AM
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frans-c Offline
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#7
RE: Cruise Control for W123 Manual
Yup, that's the thread I was referring to.
01-09-2019, 02:05 AM
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