Braking system

Messages
21
Hi,

Hi I'm newish to RC cars I've recently purchased a hpi savage XL it's a beast but I went out with it at the week end and the brake pads came undone I've screwed them back together but the brakes no work can any one help me ?
 

lokky

Well-Known Member
Messages
307
There's a small brass piston that sits in a hole in the gearbox case and is pushed in/out when the brake is applied, so make sure that it has not fallen out.

The two screws that attach the brake plates to the gearbox should be tight and grip well. If they are coming loose then try a little super glue on the screw threads before re tightening and give it some time to cure,
 

lokky

Well-Known Member
Messages
307
Some parts are hard to come by on their own and this well maybe, best scour ebay. I've used a stop collar in past. You could also cut down a nail/screw of suitable diameter if you like bodging.
 
Messages
21
Will I have to take the gear box out ? I've got the 3 speed or will be able to access this by taking the top off ?
 

lokky

Well-Known Member
Messages
307
The brake is also adjusted using the plastic knob on end of brake lever. Tighten to make firmer.

You can manually push the upright brake lever to the left while rolling the car and see if the brakes are applied.

If you know what looking for from above truck, then you can see the top of the brake piston sticking out and should be touching the brake plate.
1594132885238.png
 

X

Conspiracy of One
HPISF Staff
HPISF Supporter
Messages
3,384
Location
Minnesota
The brass piston is part of the brake cam kit. The XL part number is 86930, but I'm not finding stock of that. The savage X part number is 86092, only difference is the cam is a different color, piston is the same. I find the X part number all over ebay.

1594135292681.png
 

X

Conspiracy of One
HPISF Staff
HPISF Supporter
Messages
3,384
Location
Minnesota
No need to take the transmission apart. The piston is put in from the outside of the transmission case. If you look under the caliper brackets on the transmission case you will see a hole for it. You need to remove the brake discs/ caliper brackets to get at it. I've done it without removing anything else, but it's not easy.
 

xtremsavage

OG HPISF MEMBER!!!!!
Messages
1,998
Location
Jacksonville, Fl
Looks like lokky & X got you taken care of. But, you should be able to access it from the bottom if you turn the truck upside down or stand it up on end with the front sittin on your work bench/surface/table. It will be a little more challenging that way, but is possible to get worked on.
 

xtremsavage

OG HPISF MEMBER!!!!!
Messages
1,998
Location
Jacksonville, Fl
What type of brakes are they? Are the disk SS or are they the red fiber ones? If they are the SS, I'd suggest changing them out for the red fiber ones.
 

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