IDM Mod 140 volt

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Mar 28, 2014 | 09:58 PM

#121

IDMooseMan

Cargo Master

Joined: Jul 2006

Posts: 2,756

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From: Nampa, ID

Quote:

Originally Posted by Pikachu

Alright, I know this thread is old, so please don't flame me for dredging it up

The resistor called for is a 75k 1% tolerance resistor. I can get 2% tolerance resistors locally. Would that be adequate for this application? If not, does anyone happen to have a 1% resistor laying around? If you do, I can send you an stamped envelope and the cost of the part.

Thanks for resurrecting this thread. I'm subscribing for the info and pictures.

BTW, old threads are loaded with information. That's why they're still here and show up in searches. No need to apologize for bringing new life into old threads. I'm glad you did it to this one.

Mar 28, 2014 | 10:28 PM

#122

ProjectDually

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Joined: Dec 2012

Posts: 2,604

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From: Fort Polk Louisiana

Quote:

Originally Posted by Pikachu

99% sure it's the 110v that was in the early '99s. It's something I've wanted to do for quite a while, and finally decided to actually go ahead with it.

It was the first powerstroke though, I read it was a 100 though.. I could be wrong, it was raining here, so I didn't check it out.

Mar 31, 2014 | 01:14 PM

#123

cowmilker08

Logistics Pro

Joined: Oct 2008

Posts: 4,818

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From: Avilla, IN

Not sure about the E99 trucks, but they would either have a 110V or a 120V.
1994.5-1996 has 100V, 1997 has 110V, and SD have 120V. I'm just not sure about E99 since they are kind of a hybrid.

Mar 31, 2014 | 02:05 PM

#124

fordpride

Post Fiend

Joined: Dec 2009

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From: Livoina,La

Not all 97 had 110v
Mine had a 100v

Mar 31, 2014 | 04:57 PM

#125

Pikachu

Lead Driver

Joined: Jun 2004

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From: Amarillo, TEXAS!

I'll let you know for sure what it has in it when I pull it out. That may be some time this week, if things go well.

Apr 1, 2014 | 01:25 AM

#126

Salts

Senior User

Joined: Apr 2013

Posts: 235

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From: Corpus Christi, Texas

...talk about an uhoh if you mess up and/or overheat the board tho

Apr 1, 2014 | 08:05 AM

#127

madpogue

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Joined: Oct 2003

Posts: 8,476

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From: Madison, WI

Quote:

Originally Posted by Salts

...talk about an uhoh if you mess up and/or overheat the board tho

This is why you buy a spare used IDM, and either do the mod on that one, or keep it as a backup. Cheap insurance, and not a bad thing to have as a spare in any event.

I recall someone from Swamps saying on one of the forums that the IDM-xxx number is NOT an indicator of the voltage. IIRC, both our '95s have IDM-100s, but the '95 EVTM clearly states that it's 110V DC.

Apr 1, 2014 | 11:42 AM

#128

ProjectDually

Postmaster

Joined: Dec 2012

Posts: 2,604

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From: Fort Polk Louisiana

So go by voltage, not model number right?

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Apr 1, 2014 | 12:17 PM

#129

RÖENTGEEP

FOREIGN GURU

Joined: Jul 2006

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From: Celaya, Gto. MX

Quote:

Originally Posted by ProjectDually

So go by voltage, not model number right?

Thats correct

Apr 1, 2014 | 01:10 PM

#130

IDMooseMan

Cargo Master

Joined: Jul 2006

Posts: 2,756

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From: Nampa, ID

More magic and voodoo. Since I'm a Muggle, how do I verify voltage? Would that be listed in the Owner's Manual?

Apr 1, 2014 | 01:47 PM

#131

RÖENTGEEP

FOREIGN GURU

Joined: Jul 2006

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From: Celaya, Gto. MX

Quote:

Originally Posted by Pikachu

I'll let you know for sure what it has in it when I pull it out. That may be some time this week, if things go well.

The resistor value for the 100 V and 110 V IDM is 75 Kilohms. The later 120 V IDM uses a 73.2 Kilohms resistor. These resistors have to be high quality. You will need a 1% tolerance 1/2 watt metal film resistor. You can find them at good electronics suppliers. Radio Shack will not have 1% resistors.
Here is a direct link to digikey for the 75K ohms.
http://search.digikey.com/scripts/Dk...PPC75.0KXCT-ND

Digikey part number:

Axial type:
75Kohm 75.0KXBK-ND For 100 and 110 model IDMs
73.2Kohm 73.2KXBK-nd For 120 model IDMs

SMT Type:
75Kohm 311-75.0KFRCT-ND For 100 and 110 model IDMs
73.2Kohm 311-73.2KFRCT-ND For 120 model IDMs

OTHER NOTE:
This procedure involves modifying sensitive electronic components - any number of which, if damaged will completely ruin the IDM which can cost anywhere from a couple hundred to over $400. During the process of doing this modification, electrostatic discharge safety procedures must be observed in order to protect static sensitive devices.

I hope this helps you

Apr 1, 2014 | 06:47 PM

#132

Pikachu

Lead Driver

Joined: Jun 2004

Posts: 6,381

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From: Amarillo, TEXAS!

Thanks. I'm pretty comfortable working on electronics. That isn't to say I've *never* screwed anything up, but I should be able to get this done without any trouble when the time comes.

Apr 1, 2014 | 07:06 PM

#133

RÖENTGEEP

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From: Celaya, Gto. MX

Quote:

Originally Posted by Pikachu

Thanks. I'm pretty comfortable working on electronics. That isn't to say I've *never* screwed anything up, but I should be able to get this done without any trouble when the time comes.

I wish you good luck and the best results in your project.

Apr 1, 2014 | 07:10 PM

#134

ProjectDually

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Joined: Dec 2012

Posts: 2,604

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From: Fort Polk Louisiana

I found the resistors on ebay, .99C with free shipping

Apr 2, 2014 | 01:22 PM

#135

cowmilker08

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Joined: Oct 2008

Posts: 4,818

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From: Avilla, IN

Quote:

Originally Posted by fordpride

Not all 97 had 110v
Mine had a 100v

Interesting...

Quote:

Originally Posted by madpogue

I recall someone from Swamps saying on one of the forums that the IDM-xxx number is NOT an indicator of the voltage. IIRC, both our '95s have IDM-100s, but the '95 EVTM clearly states that it's 110V DC.

I wonder what idiot came up with that idea. Learn something everyday I guess.