Transbrake woes

Bob Verwold · 07-22-2007, 10:52 AM

Transbrake holds sometimes and sometimes it doesn't. Powerglide with Transking brake. Switched cable, solenoid, button, doubled up bracket and welded it. Still having problems. Even tried spare transmission. Please help!

SC1448 · 07-22-2007, 01:27 PM

You may not be getting enough current (ampereage) to the solenoid from the delay box output terminal (assuming you're not using a relay in your brake circuit). You can have 12v showing on your voltmeter at the solenoid itself but that's not a guarantee that there's enough current there to operate the solenoid properly. Also make sure the wire from the box to the solenoid is heavy enough to carry the load demand of the circuit. Too small a wire gauge means increased resistance and aggravation factor. Don't forget about Ohm's law here.
Good luck....
-Don

Bob Verwold · 07-22-2007, 02:21 PM

Thanks Don.

Currently have 14 gauge wire approximatly 3 ft. long going to solenoid from delay box. Solenoid has 18 or 20 gauge on it. Don't know about Ohm's law. Will switch to 12 gauge wire. Will try anything at this point.

Bob

I do have a toggle switch inline so I can back up without holding the button.

07-23-2007, 08:16 AM

Quote:

Originally Posted by Bob Verwold

Thanks Don.

Currently have 14 gauge wire approximatly 3 ft. long going to solenoid from delay box. Solenoid has 18 or 20 gauge on it. Don't know about Ohm's law. Will switch to 12 gauge wire. Will try anything at this point.

Bob

I do have a toggle switch inline so I can back up without holding the button.

Get rid of that, it is a problem. You don't back up for so long that you need one and it can be the source of these problems.

Mike Hedger · 07-23-2007, 10:37 AM

Is this a Trans King valve body with the inturnal shifer? If so I ran into this problem on a dragster I drove for a while, After the burnout you depress the TB button to backup and you think everything is OK when you put it back into low but you have to slow down and stop in Nutral put it into drive then put it in low stop in each gear for about one second and it worked fine after that. I put another button on the wheel so backing up would not activate the shift timer or the TS timers and never had another problem. I don't like the TK internal shift cause you really can't tell if it has shifted on not. With a solinoid shifter I can look down and see what gear it is in. Hope this helps, Mike

Bob Verwold · 07-23-2007, 01:26 PM

Mike,
Yes it is a Trans King valve body with internal shifter, on both transmissions, and have had trouble with both. Never had trouble with internal shifter. Unlike you, we're not allowed past the starting line. After burnout, I go into neutral to clean out motor. Then I jerk it back in low to make sure it's in low.

You're saying putting it in drive, waiting a second or two, then low gear, eliminates this problem? Is this normal with the Trans King?

I thought it was heat related and put a motorhome transcooler on it.

Thanks,
Bob

Bill Baer · 07-23-2007, 03:15 PM

Bob

I use the same trans king brake and have no problems with the brake itself, I did have have considerable problems with the brake not working consistently because I have a mismatched trans lever and shifter. Some times it would work and some times it would just let go when you stalled the converter. The problem was that the trans was inadvertently going into high which would release the brake. It took me five very frustriating weekends and a half dozen trans swaps to figure this one out.
Hope this helps.
Great Baer
3391SC/QR

Mike Hedger · 07-23-2007, 04:40 PM

After I stopped in high for a second it worked fine I just had to figure this out in the pits. I tried going from R to Low and hit the button till I found out what it needed to work. About ten tries to see if I could get it to fail and what I had to change to keep it from happining. Hope you get it figured out, Mike

Bob Verwold · 07-23-2007, 06:25 PM

I've tried it at the end of the track, at the ticket window, and numerous times back at the trailer, and it never fails to work except at the starting line. This has really been a bad year, lost a motor at Norwalk, missed four division races because I was waiting on new motor, and get it in Fri., Test and Tune Sat. and now this. Does it get any better?

Bob

Dave Goob Cook · 07-24-2007, 11:16 AM

Trans King Bob has passed away, I'd be thinking about getting a Coan or Griner valve body, if I were you.

07-22-2007, 10:52 AM	#1
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Transbrake woes Transbrake holds sometimes and sometimes it doesn't. Powerglide with Transking brake. Switched cable, solenoid, button, doubled up bracket and welded it. Still having problems. Even tried spare transmission. Please help!

07-22-2007, 01:27 PM	#2
SC1448 Member Join Date: Jun 2003 Location: Southampton, PA Posts: 226 Likes: 5 Liked 2 Times in 2 Posts	Re: Transbrake woes You may not be getting enough current (ampereage) to the solenoid from the delay box output terminal (assuming you're not using a relay in your brake circuit). You can have 12v showing on your voltmeter at the solenoid itself but that's not a guarantee that there's enough current there to operate the solenoid properly. Also make sure the wire from the box to the solenoid is heavy enough to carry the load demand of the circuit. Too small a wire gauge means increased resistance and aggravation factor. Don't forget about Ohm's law here. Good luck.... -Don

07-22-2007, 02:21 PM	#3
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Re: Transbrake woes Thanks Don. Currently have 14 gauge wire approximatly 3 ft. long going to solenoid from delay box. Solenoid has 18 or 20 gauge on it. Don't know about Ohm's law. Will switch to 12 gauge wire. Will try anything at this point. Bob I do have a toggle switch inline so I can back up without holding the button. Last edited by Bob Verwold; 07-22-2007 at 02:57 PM.

07-23-2007, 10:37 AM	#5
Mike Hedger Junior Member Join Date: Jul 2007 Location: Kemah TX Posts: 93 Likes: 0 Liked 1 Time in 1 Post	Re: Transbrake woes Is this a Trans King valve body with the inturnal shifer? If so I ran into this problem on a dragster I drove for a while, After the burnout you depress the TB button to backup and you think everything is OK when you put it back into low but you have to slow down and stop in Nutral put it into drive then put it in low stop in each gear for about one second and it worked fine after that. I put another button on the wheel so backing up would not activate the shift timer or the TS timers and never had another problem. I don't like the TK internal shift cause you really can't tell if it has shifted on not. With a solinoid shifter I can look down and see what gear it is in. Hope this helps, Mike __________________ Mike Hedger S/C 4646 MPH Racing and Fabrication

07-23-2007, 01:26 PM	#6
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Re: Transbrake woes Mike, Yes it is a Trans King valve body with internal shifter, on both transmissions, and have had trouble with both. Never had trouble with internal shifter. Unlike you, we're not allowed past the starting line. After burnout, I go into neutral to clean out motor. Then I jerk it back in low to make sure it's in low. You're saying putting it in drive, waiting a second or two, then low gear, eliminates this problem? Is this normal with the Trans King? I thought it was heat related and put a motorhome transcooler on it. Thanks, Bob

07-23-2007, 03:15 PM	#7
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	Re: Transbrake woes Bob I use the same trans king brake and have no problems with the brake itself, I did have have considerable problems with the brake not working consistently because I have a mismatched trans lever and shifter. Some times it would work and some times it would just let go when you stalled the converter. The problem was that the trans was inadvertently going into high which would release the brake. It took me five very frustriating weekends and a half dozen trans swaps to figure this one out. Hope this helps. Great Baer 3391SC/QR __________________ Bill Baer 3391 SC, 339B SC, QR

07-23-2007, 04:40 PM	#8
Mike Hedger Junior Member Join Date: Jul 2007 Location: Kemah TX Posts: 93 Likes: 0 Liked 1 Time in 1 Post	Re: Transbrake woes After I stopped in high for a second it worked fine I just had to figure this out in the pits. I tried going from R to Low and hit the button till I found out what it needed to work. About ten tries to see if I could get it to fail and what I had to change to keep it from happining. Hope you get it figured out, Mike __________________ Mike Hedger S/C 4646 MPH Racing and Fabrication

07-23-2007, 06:25 PM	#9
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Re: Transbrake woes I've tried it at the end of the track, at the ticket window, and numerous times back at the trailer, and it never fails to work except at the starting line. This has really been a bad year, lost a motor at Norwalk, missed four division races because I was waiting on new motor, and get it in Fri., Test and Tune Sat. and now this. Does it get any better? Bob

07-24-2007, 11:16 AM	#10
Dave Goob Cook Member Join Date: Dec 2006 Location: Indy Posts: 422 Likes: 0 Liked 0 Times in 0 Posts	Re: Transbrake woes Trans King Bob has passed away, I'd be thinking about getting a Coan or Griner valve body, if I were you.

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