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
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
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.
This ^ using dbl pole 3 position switch is what I did. Some times simple is just perfect.
Only the stupid know too much to learn something new.
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Thinking about it some more it could be done with two diodes...
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
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Just fix the trans so it doesn’t rock & roll when the transbrake is engaged.
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With 2 diodes you’d still need a second TB reverse push button also.
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.
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.
Correct. I have a push button for reverse.
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.
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.
Configuration: 3350#, 555 C.I.,
60 - 1.24
1/8 - 5.69@ 123MPH
1/4 - 9.03& 152MPH
3700#+210lb driver, FULL interior, through mufflers, 10.5 tire.
60'-1.333 (IN 4000ft DA! Joisy Math excluded; 1.25sec using JOISY MATH.)
1/4 - 9.60@144MPH
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.
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