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The new tow rig (Read 9880 times)
97FASTech
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Re: The new tow rig
Reply #15 - Sep 20th, 2013 at 1:03pm
 
Nathan, not only does EOH brake in reverse, but around corners also, basically it brakes every time you push the pedal.  EOH with the controller set up correctly, will allow the user to add more brake to trailer, so the trailer actually can stop the truck.  Surge brakes are also sketchy when in turns, because you are relying on the forward momentum of the trailer to apply the brakes.  EOH is definitely the ticket!!!
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nathan
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Re: The new tow rig
Reply #16 - Sep 20th, 2013 at 1:18pm
 
that sounds like the only way to go on a boat trailer.  especially on big boats.
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My Happy place is on a boat at the lake with my kids!!

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JC
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Re: The new tow rig
Reply #17 - Sep 20th, 2013 at 3:27pm
 
I back down the steeper ramps with tranny in Drive too. If I leave it in neutral, the front tires will start sliding (when on gravel). My truck has drum rear brakes and they work a lot better going fwd.

What sucks is when the idle starts surging and/or eng dies. That can be a game changer.

Another option is to apply the parking brake so it's dragging while backing in.

A long time boater friend told me one time, that if you loose the ability to stop while backing down the ramp, just concentrate on keeping it lined-up. When the boat hits the water, you'll stop. He told me that while backing down the Lakeway ramp. Definitely not a ramp you wanna loose control on!
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mobileMERCman
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Re: The new tow rig
Reply #18 - Sep 20th, 2013 at 7:53pm
 
JC wrote on Sep 20th, 2013 at 3:27pm:
I back down the steeper ramps with tranny in Drive too.
Another option is to apply the parking brake so it's dragging while backing in.



Trannies are much more expensive then brakes.

Yes, keeping the rig straight is always the priority.

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Jim
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nathan
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Re: The new tow rig
Reply #19 - Sep 20th, 2013 at 8:43pm
 
I have talked to many people that rebuild transmissions and rolling backwards in drive does little to no damage to a transmissions.  the damage comes if you slam on the gas while going backward.  I use brakes first and the transmission like an exhaust brake.  what scares me is the people that back down a steep ramp in reverse.
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My Happy place is on a boat at the lake with my kids!!

current boats:
1983 chaparral 235 XLC (restoration)
1977 playcraft p24 pontoon (parents own now I am the mechanic)
1975 skeeter hawk (on hold)
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JC
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Cedar Park
Re: The new tow rig
Reply #20 - Sep 21st, 2013 at 7:14am
 
The tranny clutches are not slipping when backing down ramp in drive, just the torque converter, which at low eng speeds, is slipping already. I wouldn't do it at more than an snails pace however.

If you did it for a long time or at a higher rev speed, it will cause the tranny fluid to heat up. As far as the torque converter is concerned, it's the same as mild power braking.

As I mentioned prev, drum brakes aren't nearly as effective in rev since they are not self-energizing as they are when going fwd.

With disc brakes, they don't care which way the wheels are turning.
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« Last Edit: Sep 21st, 2013 at 11:18am by JC »  

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