|09-06-2016 12:11 PM|
I see this measage being brought up again and would like to direct you guys to this thread;
Check out this thread.
In post #20 I posted a diagram of my circuit to give you an idea how I did it. Certainly not saying it's the best way or cheapest. Just the way I did it.
The Waytec relays I used;
InPower VCM-03-60SA is an on-delay of 0-60 sec.
InPower VCM-02 is a latching relay, alternating. Or a toggle.
You need to read about these relays to appreciate what can be done with them.
As stated in the linked thread, cycling of the vacuum switch was my main dislike. The delay relay solved that.
Also, I didn't like the TCC engaging below 40 MPH as it pulled the engine RPMs low enough to cause the engine to lug. That is solved by the use of the latching relay and a momentary button on my shifter "T" handle.
I have lived with it since the last of April of this year, and through this years Hot Rod Magazine Power Tour. It was exactly what I wanted.
I have the delay down to about 10 seconds. I find it's a lot easier and more comfortable to just lay my hand on the shifter to hit the button than to reach to the dash for a switch.
But each to his own and I hope this helps someone to enjoy there 700R4 more.
|09-03-2016 07:47 AM|
I did find a Standard DSV28 and Borg Warner EC308. I'll have to test those to see how long the delay is.
|04-11-2016 07:33 AM|
Just done a google search on your part number and found a few places to get it. 1 of them being:
GM (General Motors) - 14020691 -Vacuum Delay Valve- For Use With PW60109 & PW60110 -200R4 & 700R4 TCC Control Kit
|04-10-2016 08:49 PM|
Solid state delay timer
I'm replying to this helpful thread to thank the participants for their time and effort in posting the solution to the TCC cycling issue. Our car has a TH 2004R and this information allowed us to fix it.
In short, we ordered the $50 timer, Waytek Item 75545 and a $3 mini relay Item 75623, both with built on mounting brackets, and wired them up. The timer mfr # VCM-05-10SA, 0-10 second One Shot Relay has a unique trigger feature. When +12V is applied to input A, the timer output, +12V only, will stay +12V until the timer expires unless the input is removed and reapplied, then the timer restarts the timeout sequence early. Which is perfect for a vacuum switch that cycles.
The mini relay is energized by the +12V timer output, breaking the TCC circuit for the duration. Initially our timer was set at 6 seconds, which worked satisfactorily for the shakedown run.
|08-21-2014 09:42 AM|
I cant find any info on the Waytek relay. Are you sure the model is VCM-14 10SA? could you maybe post a link to the info?
I redesigned my delays circuit to use a 555 timer IC. I found that the 10 second delay was to short for me in several situations driving my Suburban here in the Netherlands.
I hooked up the relay to the VCC output.
here is the link to the info I used:
if you are willing to do some soldering, then this circuit is like the previous circuit supercheap.
|08-20-2014 01:59 PM|
Yes I know this is an old post but some doing searches may benefit. There is a company selling a solid state electronic delay perfect for this application.
For about $50.00 you can buy just the 0-10 second adjustable delay & wire it yourself. It's from Waytek, Inc. Model #VCM-14 10SA. (VCM is short for Vehicle Control Module). OR you can buy it ready to install from Summit/Jegs for about $115.00. That is Performance Automatic part #PA11400.
|07-17-2012 10:27 AM|
FYI, here is a link to the adjustable time delay switch I purchased for $40 from Baker Electronix. It is probably cheaper to build one, but this is contained in a very small black box with a small control knob to adjust the length of the delay. You can specify the range of available delay when ordering.
Baker Electronix - Time Delay Modules
Can you put the time delay switch/circuit between the 4th gear switch and the TC solenoid so that the lockup doesn't occur immediately?
|07-08-2012 02:08 PM|
Sure I can do that.
Also, I have made some significant improvements in the circuit. BTW.
One of the things I noticed with this circuit is that the TCC will pretty much lock up as soon as you go ino 4th gear. And that's okay ..no problem...but it does create a sudden drop in rpm ..and I didn't like that.
My goal was to actuall wait 8 seconds after the transmission goes into 4th before TCC lock up...not just to prevent it from hunting. So I have modified the original cirucuit but..it requires soem minor chanes inside the transmission oil pan and it is more complex...but it work exactly the way I want it.
Use the original circuit as is, but if you find that you don't like the idea of it going into TCC lock at the same time as going into 4th, I will send you a new version of the circuit..but no doubt it is more complex.
I'll put a parts list together for the original.
BTW, a 1000 uf cap will probably give you closer to 8 or 10 seconds. But now the physical size of the cap are going to start getting big.
Unfortunately the resistor in the circuit has no significance contribution to the delay time constant. It's only there to prevent too much current going through the Transistor ad supply voltage to teh capacitor.
I will email you the more sophisticated circuit if you wish. Send me a private message.
|07-08-2012 01:51 PM|
I'd like a 10 second delay...any thoughts on capacitor size?
|07-08-2012 01:42 PM|
Larger capcitor. I think 880 uf is a standard avialble size, should give roughly 8 Seconds.
But the time constant will be a combination of the resistance of the relay coil (which you can't really change) and the capcitor.
If you use a different brand of relay you may get a different resistance ..but it should not be a huge difference.
You can also increase the capacitor value by putting capcitors in parallel.
Of course, you must keep in mind that capactors of these value are polarized. ..i,e there is a positive and a negative side..and you MUST put them in the correct polarity.
My circuit has now been working flawlessly for over a year.
|07-08-2012 12:55 PM|
|kikkegek||@ cadmanof50s: thanks man! how do you vary the time? bigger resistor or capacitator? maybe even make it variable?|
|07-08-2012 11:24 AM|
|08-12-2011 08:02 AM|
For sure, Overdriv.
Should be an attachment.
Let me know if you have any Q's about it.
|08-12-2011 08:00 AM|
|Overdriv||cadmanof50s, would you care to share the circuit you have made that fixes the cycling?|
|08-11-2011 11:14 PM|
John, as you so very astutely pointed out, the problem is that the turn on and turn off points of the vacuum switch are too close together. Unfortunately that can't be changed.
The circuit holds off applying voltage to the TCC after the vac switch closes again. This has the same effect as widening the vacuum switch turn off/turn on points. I'm just doing it electrically.
I was going to add a toggle switch as you did, but I'm too lazy of a driver. I wanted it all done by the gas pedal...:-)
BTW, I am happy to post a diagram of my set up ..if any one wishes to see it...just gotta figure out how to post a pic.
Thanks again, John.
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