Are the rocky mountain brakes that are available today worth buying? I have heard they have issues, but I am not sure. Any thoughts on this?
Good discussion on brakes here from a few days ago. http://www.mtfca.com/discus/messages/708324/716123.html?1485002167 Did this search on Yahoo "rocky mountain brakes mtfca.com 2017"
The later style of Rocky Mountain brakes have a self-energizing feature that might be thought of as a mechanical "power-assist." _Unfortunately, this same feature is what causes these brakes to be far less effective in reverse. _That is the reason why, when installing RM brakes, it's important to keep your internal transmission brake in working order. _There's no doubt that in a forward direction, Rockies will decrease your braking distance—up to a point. _That point seems to be about 30 mph, at least in the case of my car. _At 35 mph, my stopping distance is noticeably longer and requires more pedal effort.
One need remember is that, with the skinny tires we use, our braking traction is only as much as can be gotten out of a footprint the size of a shot-glass. _The best disc brakes in the world won't make the car stop any better than a correctly adjusted set of Rocky Mountain brakes because Rockies already have enough power to lock up the rear wheels. _More power than that, you don't need.
The other limitation of Rocky Mountain Brakes is that they become ineffective when wet in rainy weather, so you'll be depending on your less powerful internal transmission brake under such conditions. _To my way of thinking, the silver lining of that particular cloud is that the car is less likely to skid that way.
Are Rocky Mountain Brakes worth the investment? _In my opinion, yes.
I have R/M's on my T and love them because i know their strengths and weaknesses, and therefor drive accordingly,.. like i have no brakes at all. Others here like the older style which i hear is much better in reverse and in the wet. In any case both are far superior than just relying on the trans brake alone. Its also very important to have a well functioning parking-brake no matter which route you decide to take.
Wet is wet when it comes to outside brakes. What linings are installed can make a difference.
Hi all ; Can some of you tell me why the Rocky-Mountain brakes don't work when wet. And the transmission brake works when RUNNING IN OIL ???
The brakes do work when wet but the water has to be burned off first so it takes longer for them to respond. To some extent the same is true of the internal brake running in oil but since it is a constant, as opposed to the variable of wet and dry external brakes, we don't notice it. Unfortunately, it contributes to the poor braking we all live with if we are running stock T's. You can actually have the same issue with water on enclosed drum brake systems but it takes more water to get them soaked when they are internal like driving through a deep puddle.
I don't yet have personal experience with auxiliary brakes, but for the past several years I've read a lot of forum discussions of them. From what I've read the the current AC brakes have an edge over Rockies because they do work when backing up. So I'll put a set of AC's on my touring and get some personal experience with them. When I do I'll let you know what I think.
Does anyone know if the original AC brakes work better than the repos now being made?
I can only tell how the original AC's work, fine both ways.
I currently have a big drum 26/27 rear end installed on my 21 T and have the RM on it. I don't know why but they seem to work in reverse. I have a friend that has about the same vintage RM's on the his 23 with the added drums installed. The same hill in my driveway that my car stops on backing down with them..his no stop.
Another friend has the current AC's, while he has has a few issues with the levers that apply the shoes that we need to sort out, they seem to work but I have not driven the car to be able to report on them.
I grew up on a farm with a long lane with lots of standing water, learned early in my driving to dry the brakes before getting to the end of the lane.
For myself, I would not own a car without them. My wife and I were on a hill pulling away from a stop sign when the pinion gear broke. Just that fast we were going back wards down that hill. My Rocky Mountain brakes stopped us just fine.
If all I had was the emergency brakes to stop us we would have been hurt.
I have both on different cars and the AC brakes are fine but they do not stop as well as the Rockies. I assume that is because they are self actuating and use a bigger drum so there is more braking surface. I don't think the issue of reverse with the Rockies is that big a deal. First , they do work in reverse but it requires a lot more foot pressure because they do not self actuate in reverse and second, if you have lined shoes on the rear drums they will stop you just fine in reverse. I know some people remove the Ford service brake drum but if you use it along with the larger drum for the Rockies they will work just fine in reverse if needed.
On a speedster or light roadster with a small drum rear end the AC brake will probably serve you well. If you have a large drum rearend you are pretty much stuck with the new style rocky if, like many of us, you have no interest in the disc brakes. I have tried running the inside brake with an equalizer on the large drum but I feel a properly adjusted set of rockys is better. I would not run the small drum shoes with an equalizer.
I can't use Rocky Mountain brakes on my 19 because I live in NH and the Rocky Mountains are too far away.
I can use the NH carburetor and White Mountain lightening because the White mountains are close.
I live in the Seacoast area of NH so there is something fishy about this reply.
So the halibut I'm going fishing.
You went fishing just for the Halibut?
OK, I'll just clam up now.. .
I got a license for my pet fish Eric - he is an halibut.
I don't plan on taking Eric fishing.
I can't keep him out of the bait bucket.
The bottom line is, when you reproduce a part, do it like the original, and don't cut corners.