Rear Brake Vs Rear cable brakes ??

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Streetwise

Streetwise

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Hey Guys,
I've had the rear alloy brake holder and large fibre disk set up for a while now, and im thinking of upgrading to cables on the rear, i already have cables on the front.

Heres the question; What is the benifit / advantage / disadvantage:
Of the layshaft free wheeling, or not being under load with the spur gear and clutch gear with the rear cable brakes under braking as compared to braking with the standard brake system which directly brakes the gears ??

The Large fibre brake disk is well worn, the centre hub is starting to round off as its had alot of use.

Are the rear cable brakes worth investing in for better braking ?

I'd appreciate your comments from those that had made this change and were you glad you did it !

Cheers guys :-)
 
The stock rear brake is trash around a track. When you hit the brakes around a turn, one wheel turns backward and the other turns forward because of the diff. Therefore very little braking action is being accomplished. Just sideways sliding and wasting all forward momentum.

Having a brake on each wheel is going to give you much better braking action with more secure stops and a better feeling of control. Instead of the rear locking up and then sliding into a uncontrollable drift, you can slow the wheels more progressively, resulting in a more controllable vehicle.

If all you do is terrorize baseball diamonds and parking lots, the rear brake conversion may be a bit of a waste, as you don't need great brakes to to wheelies and burnouts! It may actually take some of the fun away from the burnout driving style.

Just my 2 cents.
 
Ok cool, cheers guys. That's good info.
I mainly bash on grass / dirt. Braking does seem a tad erratic.
Silly question, would it be worth retro fitting the stock brakes and rear
Cable brakes together, providing the servo could cope with it wouldn't that
Give better braking and control ?
Worth a thought ? Lol
l
 
I too bought the alloy rear layshaft brake 'upgrade' and didn't notice much difference, so installed front hydros.
When braking, of course, much more of the weight is transferred to the front.

My 18kg MT stops very quickly - if I want, I can lock the fronts, and that's with wider MCD tyres on.

It makes sense to have all wheels braked, but I believe I'd get away without any rear braking with those hydros I have on the front (unless they fail !!!)

Al.
 
i got FG Tuning front disc brake kit on my FG Baja 4WD and its amazing, everything is adjustable and excellent feel. eventaully i want to race it so im getting it set up now, if your just bashing a good rear brake system should be all thats required.
 
You may see a slight increase in braking with both the rear cable brakes and the layshaft brake, but it isn't necessary. There are some incredibly fast onroad cars in the 80mph range, that race on tracks and I don't believe I have ever seen a layshaft brake on any of the cars I have looked at.

Try whatever you like, it's your vehicle and by no means has every setup been tried. Who knows, maybe you'll come up with the killer setup we've all been chasing?

What ever your results, come back and tell us!
 
If you look at most euro racers layshaft in the rear and front brakes. Works the best in my opinion. My Contrast fuego was Ian Oddies and it has layshaft in the rear and front hydros. My Elcon Cleons have front air brakes and the rear disc brakes on the diff.

I think your setup is perfect, just needs some adjusting or maybe higher torque servos.
 
You can upgrade the 97brake kit to an alloy rear disk and better pad material. This will help a bit from original. As said in the above post - Its all about torque when it comes to manual brakes. If you get a really good high torque servo such as the DS8711 servo. You will have much better stopping power. If you can put the breaks on full and still get the model to roll when pushed the servo has not enough power to stop the model (If set up correctly).

DSC01764.webp

DSC01762.webp
 
SELWA said:
If you look at most euro racers layshaft in the rear and front brakes. Works the best in my opinion. My Contrast fuego was Ian Oddies and it has layshaft in the rear and front hydros. My Elcon Cleons have front air brakes and the rear disc brakes on the diff.

I think your setup is perfect, just needs some adjusting or maybe higher torque servos.
Click to expand...



Just to Clarify Joe's point, it's the majority of off road drivers that use front hydraulic brakes and the layshft/diff rear brakes and unless a kit like the new Leopard and possibly the hoerman isn't able to have that set up then they have discs on each corner. The standard/upgrade layshaft brake is more than ample when used with a decent servo and front brakes if it's set up correctly.
The touring car drivers do used discs all round and they're normaly set up with the bias to the front and most people have the brakes set so they lift as the car steers round a corner - and they don't do 80mph in normal competition as suggested, is more like 50mph.
 
Cheers guys, thats lots of info and made good reading. :-)

I think for now i will stay with my set up and upgrade my 97 Alloy brake with a steel disk.
Its certainly going to be the cheaper option. Im using a HS-645MG servo, my guess is to upgrade the servo as well as im running front cable brakes also. At least if i upgrade the servo, if i decide to go cable on the rear it will cope with it.
Does any one know the part number for the steel disk for the 97kit ?
I cant find the part number for just the disk

Cheers :-)
 
Streetwise said:
Cheers guys, thats lots of info and made good reading. :-)

I think for now i will stay with my set up and upgrade my 97 Alloy brake with a steel disk.
Its certainly going to be the cheaper option. Im using a HS-645MG servo, my guess is to upgrade the servo as well as im running front cable brakes also. At least if i upgrade the servo, if i decide to go cable on the rear it will cope with it.
Does any one know the part number for the steel disk for the 97kit ?
I cant find the part number for just the disk

Cheers :-)
Click to expand...
You need to get the whole kit and not just the disk. Are you using a plastic gear carrier assembly? Also are you using a separate servo for the front brakes? Take some pics if you can
 
SELWA said:
You need to get the whole kit and not just the disk. Are you using a plastic gear carrier assembly? Also are you using a separate servo for the front brakes? Take some pics if you can
Click to expand...

I have the alloy gear carrier, the upgraded 7497 alloy brake kit currently with the larger fibre brake disk. Single servo at 7.20KG Torque.

Will take pics in a while :-)
 
645 is a bit low, a 5645 would be better and having a separate one doing the front brakes. The upgrade kit comes with a steel disc, pads, some hardware and a steel square holder from what I remember.

Let us know if you need the number. I can have a look at the catalogue once I get home.
 
For the smaller 'standard' servos, I use Savox 1256TG servos, rated at 20Kg.cm at 6V (about 277 oz.in).
Excellent servos and I've never had a problem with them that wasn't self-inflicted.
For the fronts, ensure that the servo tray is solid. Perhaps consider a carbon fibre or alloy one, or simply increase the bracing, as the standard plastic ones flex quite a lot, particularly with high-torque servos.
Al.
 
Hey,
Yes i agree my 645 is on the under powered side, looking at what you guys are using in the various threads i found. :-(

Hmm.. i have a large fibre disk in my 97kit, i can only assume i bought a fibre one last time it wore out, its the sqaure hub i have the issue with hopefull the picture shows how its rounding in the corners.

2970280950101716911S200x200Q85.jpg


I cant find any part numbers for just the steel disk for a 97kit, so if any one has it please do share :-)

Cheers
 
Last edited:
No problem, get the kit though. You need the right pads and the square disc holder is steel. If you just get the disc it will wear the aluminum square holder and pads you have now.
 
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