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DRR Trophy
posted
Is there any way to wire a car for box and no box to use the line lock so the car doesn't roll while staging and also be able to use the trans brake to use reverse? The only way I can think of doing it is having another switch to arm/disarm the line lock. Let me know of your thoughts
 
Posts: 60 | Location: MI | Registered: September 05, 2015Reply With QuoteReport This Post
DRR Sportsman
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When i ran a line lock in conjunction with my trans brake I wired a micro switch on the shifter that would only allow the LL to work when the car was in low gear. That way I can back up with pro brake and not have to worry about LL getting in the way. No switches to remember to flip either.


Stephen Liss jr

Byron Dragway 2014 S/Pro champ #1 fan
 
Posts: 301 | Location: Wisconsin | Registered: April 28, 2008Reply With QuoteReport This Post
DRR Pro
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Jimmy, some high tech method is most likely available, yet I stay with old-timey and simple. My setup is a toggle, one position is burnout [trans brake off] other position is race [both line lock and trans brake active] The toggle is mounted near the trans brake button and labeled in case I have a brain fade.


Larry Woodfin



 
Posts: 1160 | Location: Kilgore TX | Registered: March 12, 2004Reply With QuoteReport This Post
DRR S/Pro
Picture of wideopen231
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This ^ using dbl pole 3 position switch is what I did. Some times simple is just perfect.


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Chris McBride

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Posts: 1032 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
DRR Trophy
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Thinking about it some more it could be done with two diodes...
 
Posts: 60 | Location: MI | Registered: September 05, 2015Reply With QuoteReport This Post
DRR Trophy
Picture of jay giles
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Diodes....yes, works great. No switch to think about or forget. YESS
 
Posts: 15 | Location: rougemont,nc | Registered: December 19, 2001Reply With QuoteReport This Post
DRR Trophy
Picture of Underdog99
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quote:
Diodes....yes, works great. No switch to think about or forget.


I don't run a box but use diodes to tie in the line lock. I got a bunch of them off ebay for really cheap. They are rated 15 amp and used somehow for solar panels.

Get a sheet of paper, lay out the circuits and figure where the current needs to flow in one direction. That's where the diode goes. They will have a stripe on the end that indicates the direction of flow. Stripe is on the end where the power comes out but not in.

I agree about switches. Grandpa doesn't need anything else to remember not to forget. LOL
 
Posts: 220 | Location: Pittsburgh | Registered: October 23, 2014Reply With QuoteReport This Post
DRR All Star
Picture of 1320racer
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OR...

Just fix the trans so it doesn’t rock & roll when the transbrake is engaged.


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Posts: 9332 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR Sportsman
Picture of bcMOD3X3X
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^^^Agreed^^^
 
Posts: 131 | Location: Oxford,MI | Registered: July 13, 2007Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by Jimmy Francisco:
Thinking about it some more it could be done with two diodes...


With 2 diodes you’d still need a second TB reverse push button also.
 
Posts: 646 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post



DRR Trophy
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we added another switch in shifter that mounts on top of neutral safety to energize trans brake to back up in reverse .its like a back up light switch . works great on pro brake so you don't have to push button to back up.
 
Posts: 10 | Location: Odessa,Texas | Registered: December 05, 2008Reply With QuoteReport This Post
DRR Trophy
Picture of Underdog99
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quote:
Just fix the trans so it doesn’t rock & roll when the transbrake is engaged.



Care to tell me what's wrong with it ? I've searched and searched only finding others with the same issue but no definitive cause or remedy. TH 350 with Hipster brake. I'll be pulling it apart over the winter and welcome a way to remedy.

I have found that bringing the RPM up to around 2500 before releasing the foot brake seems to lock it so I suspect it may be a line pressure issue.
 
Posts: 220 | Location: Pittsburgh | Registered: October 23, 2014Reply With QuoteReport This Post
DRR Trophy
Picture of Underdog99
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quote:
With 2 diodes you’d still need a second TB reverse push button also.



Correct. I have a push button for reverse.
 
Posts: 220 | Location: Pittsburgh | Registered: October 23, 2014Reply With QuoteReport This Post
DRR Pro
Picture of Lenny5160
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quote:
Originally posted by markemark:
quote:
Originally posted by Jimmy Francisco:
Thinking about it some more it could be done with two diodes...


With 2 diodes you’d still need a second TB reverse push button also.


I don't use a line lock at all anymore, even for the burnout, but for years I'd back up with the line lock engaged. Just knew that I'd need to release the button to have brakes.


Tony Leonard
 
Posts: 2381 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by Lenny5160:
I don't use a line lock at all anymore, even for the burnout, but for years I'd back up with the line lock engaged. Just knew that I'd need to release the button to have brakes.


With the correct model line lock you will still have brakes with the line lock energized and your foot off the brake. This type allows brake fluid to flow toward the brake calipers even when energized.
 
Posts: 646 | Location: 53056 | Registered: December 30, 2009Reply With QuoteReport This Post
DRR Pro
Picture of Lenny5160
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quote:
Originally posted by markemark:
quote:
Originally posted by Lenny5160:
I don't use a line lock at all anymore, even for the burnout, but for years I'd back up with the line lock engaged. Just knew that I'd need to release the button to have brakes.


With the correct model line lock you will still have brakes with the line lock energized and your foot off the brake. This type allows brake fluid to flow toward the brake calipers even when energized.


Was your post concerning the need for a second 'reverse' button related to brakes? That was my assumption. Otherwise, I can't see the need.


Tony Leonard
 
Posts: 2381 | Location: Inver Grove Heights, MN | Registered: March 18, 2004Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by 1320racer:
OR...

Just fix the trans so it doesn’t rock & roll when the transbrake is engaged.


Both my t350 from rossler rolled some after staging. Drove me nuts but it was a consistent roll. Spoke to carl on several occasions and would bring it up in discussion and he said that is the way they are. He said a glide won't.

Eventually got a glide from him and it doesn't move. No other changes.



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Posts: 1167 | Location: St Marys | Registered: January 12, 2004Reply With QuoteReport This Post
DRR Sportsman
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We made about 800 runs with a Coan T350 and it NEVER rolled front or back. Nothing trick, I think trans was $1800 with the valve body and some stronger parts. Call Coans and you won't need a line lock to hold the transbrake.
Jok


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Posts: 865 | Location: Janesville, IA | Registered: December 21, 2004Reply With QuoteReport This Post
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