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Onan Tech Star 35G Saavy?


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  #21  
Old 01-03-2018, 05:53:53 PM
len k len k is offline
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Default Re: Onan Tech Star 35G saavy?

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Originally Posted by Vanman View Post
With enough money and ingenuity, one could use a series of contactors with the requisite control to make it so that you could switch between voltages on the fly.
I remember reading want to stop engine before changing configuration. But technically would think would be ok to change while running as long as had no load and maybe second or so pause between configuration changes ( to let any circulating currents die out ....inductance issues.)

Have to think about effect on voltage reg of losing sense input, will go full field. Maybe additional pause to fully disconnect reg before reconfigureing output
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Old 01-03-2018, 07:15:04 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan Tech Star 35G saavy?

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Originally Posted by Motorhead View Post
About the ONLY thing in your favor on the 35G is that it is a Ford 2.3 Overhead cam engine (Pinto, Ranger pickup) that can probably take the higher RPM that some of the other engines don't fare so well at...
I'm reasonably sure that the subject set has a Chrysler Industrial H135 engine, not a Ford.
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Old 01-03-2018, 07:28:03 PM
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Default Re: Onan Tech Star 35G saavy?

Thanks Wayne. I didn't catch that one. Yes Onan used the Chrysler engine on the Tech Star.
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Old 01-03-2018, 08:32:14 PM
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Default Re: Onan Tech Star 35G saavy?

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Originally Posted by Wayne 440 View Post
I'm reasonably sure that the subject set has a Chrysler Industrial H135 engine, not a Ford.
Sorry Guys and Thanks Wayne for the correction. It at first glance looked like the Ford 2.3 engine. The little Chrysler 4 banger and the Ford 2.3 look close alike. I went back and edited out my two previous posts. Sorry for the mis information to the Original poster and to you guys on the site.

I HAVE worked on both engines and had a client with a Dodge mini van with the little 4 cyl that blew a head gasket at about 140,000 miles. He drove it over heated until it about stopped! He had no money so I pulled the head, did a quickie surface and put it back together with a new head gasket. I told him it wasn't pretty inside as the cylinders had some scoring and he should unload it ASAP. He drove the damn thing another 20,000 miles before he sold it with no problems
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Old 01-03-2018, 08:40:10 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan Tech Star 35G saavy?

I am normally a big fan of Chrysler (as it existed before the before the Daimler, Fiat etc. fiasco), but would not place much faith in that engine for generator set service at 3600RPM. That said, at 1800 and 20kW or so, it would probably give good service.
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Old 01-05-2018, 07:08:21 AM
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Default Re: Onan Tech Star 35G saavy?

My plan was to put it behind my shop in an add on room and run the wiring into my shop to use as a test stand and to run my 3 phase equipment (ie) welder.

Think it would be ok for that purpose?

So, the techstar 35g is a chrysler engine? Can you govern the RPM?
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Old 01-05-2018, 09:45:44 AM
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Default Re: Onan Tech Star 35G Saavy?

No it is 3600 or nothing. Needs to run that fast to create the proper voltage. If you chose to use it. Keep everyone away from it. Be ready for the noise and after each run. Check for loose items.
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Old 01-05-2018, 11:32:27 AM
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Default Re: Onan Tech Star 35G Saavy?

That engine is the industrial version of Chrysler's 2.2L auto engine.
As Billy says, it has to run at 3600 in the Techstar application. My
comments concerned the engine in general, I apologize for the
confusion.
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Old 01-05-2018, 02:09:01 PM
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Default Re: Onan Tech Star 35G Saavy?

Just a thought, if you already have (single phase) power to your shop, you could build a phase converter, and incorporate a transformer to supply most any voltage you'd want... Sourcing most or all of the parts used, you could do it fairly economically, I'd think.

It would be unimaginably quieter...

Here's a straight six diesel running 3600 rpm. So loud that the microphone is clipping lol. The guy has the balls (or the ignorance) to stand right beside the block!

https://m.youtube.com/watch?v=1L4vJCc8OpY
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Old 01-05-2018, 02:49:38 PM
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Default Re: Onan Tech Star 35G Saavy?

If you already own it you might as well use it, just be prepared for or try to mitigate the noise somehow. I would not be sinking a lot of money into it though , in case you can't stand it or it dies early. Cheers Dan
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