welcome back guys first off i want to say thank you for all the support in the last video if you
guys did not see that video we went through and built up the rm to this point and uh yeah i really
really appreciate the support and just over the years on the channel pretty lucky to be doing what
i'm doing here and uh be free to share my opinion on the uh the world matters as well so yeah thank
you i never say it enough to you guys but yeah let's get going on this rm today we are going
to be working on the brake systems so the front brake on the rms is definitely a weak point and
we're going to be doing some stuff to upgrade that we're going to be swapping some stuff on the rear
too so let's get into it so like i was saying the front brakes on the rms suck pretty bad so we are
gonna be swapping them out for a completely different system off of a 2015 sierra 450
these are a lot better of a system i've always liked the honda front brakes from what i've seen
the caliper uh adapter just needs to be swapped over so let's bolt it up and see
what we can do i'm gonna need to pop this front wheel off and throw a rotor on here
don't worry that's just a temporary rotor for now we're gonna see how close
the crf mount is to the rm forks
yeah we're pretty far off here you can see it's about an inch off i'm gonna swap the rm bracket
on here and see how that works so obviously the rm bracket will fit onto the rm forks just a
matter of lining up with the crf caliber yeah it looks like it's gonna be pretty close let's try it
yeah it looks like it lines up
i had done some research on this before online and
people said it would line up and they they weren't kidding
all right now we just gotta see if everything lines up with the rotor and forts
lines up with the rotor obviously lines up with the forks
that one's good
look at that budget hack for getting some better brakes on your rm i think i found this brake
system for i think it was like 80 on ebay so yeah that's that's a good sign and obviously
once we go up to the top here
it'll line up with the handlebars that's no issue there
and we're gonna have the new style routing as well the rm usually uses routing that comes down
wraps around the four plug here and this is a lot more efficient of a style just like the crf
routing so that should work perfect so if you guys are interested in doing a swap like this on your
rm all you'll need is a 2007 or newer crf 250 or 450 front brake system i believe they're the same
all the way up to 2020 or maybe even 2022 but just look for a used set like this on ebay
and what makes these 07 and newer systems great is they have a little different setup with the
master cylinder here works a lot smoother than the older style has like uh i don't know what you call
it different plunger system basically and it's a really smooth progressive system so definitely
pretty excited about this mountain up on there now for the rear brake system this is a 2001
so it uses the reservoir type that mounts higher up on the frame didn't really like that style so
i was looking into ways to swap that over and i came across the crf master i was looking at on
my bikes and then i also got a little tip from my buddy charles at mx revival he said the crf master
cylinder rear master cylinder would work on there and the bolt holes lined up you just got to do
a little swapping with the internals here and so we're going to try that out and i also heard that
um what was it yz master cylinders of certain years i don't know which they also use the same
pattern so you might be able to swap a master off of yz as well see it just bolts right up to the
rm frame you might need to do a little bit of trimming here the bottom hole is getting held
up so now we just gotta see if we can line up the brake pedal and the rear caliper with this setup
looks like we're lining up pretty good maybe a little bit high
let's just trim this frame so i can get that master cylinder bolted all the way on there
so we just had a trim right on this bottom corner of the lower mount should have done that before i
powder coated the frame but didn't really do my homework on this thing it's maybe a little bit off
you can see the piston coming out a little bit of an angle there i have to almost rotate the master
back that way so when looking at it from the back we don't have perfect alignment you can see it's
cocked out so i might have to bend the pedal in a little bit or do something with the clevis
i'm just going to try bending this thing up see if i can get it to move over
this one didn't really work too well it just got all bent out of place i was trying to straighten
it out and re-bend it so that way it would work but kind of destroyed it so i don't think i'm
to be able to get the cr master cell to work on there i mean i could with a different clevis but
i saw that a yz 125 like a newer yz125 master would mount up on there and it looks like it's
gonna position it a little bit better and i won't have to grind the frame or do any
alterations there so i'm gonna go buy a 125 master cylinder and see if that will work any better
if not i'll just create a custom clevis for that master and uh just do a one-off part on it so a
little tip for you guys that are looking for used parts pull up a diagram here like a parts fish
and find the part number i'm using cycle parts nation so find the part number here
right here and copy that into this little search here
and that'll pop up what bikes that part will fit so it shows o5 208 yz125
250f 450f all these different models and then if we go over to ebay we can search up
all these models and find a master cylinder so it just kind of broadens the search here
all right i found this one here off of a 2005 or 2006 yz250f looks to be in pretty good shape
so i'm going to snag this one and test it out so it didn't quite work out with the rear brakes but
we're gonna move back to the front brake system here i'm gonna tear this all the way down get it
cleaned up and ready to rebuild so we're just gonna pull the brake line off of it right now
about that brake lever i think we can straighten her out
she's a little wonky so this is what i'm saying about the newer crf master cylinders they have
this pin here and this makes for a lot smoother action with the lever see all this rotates or
it should rotate this lever is all jacked up basically this rotates here with the angle of
the master cylinder and makes it work a lot better now for the lovely cap screws here these things
are always stripped out all right our last attempt here is going to be with the impact screwdriver
those screws are already pretty far gone but let's see what we can do
yep gone
that one looks like it was going today's just going great isn't it
so i'm just going to drill down into the thread or down into the bolt a little bit
and tap a torx bit in there and that should loosen it up
brake fluid flammable i guess we'll find out
there we go money
i think that heat made the difference
yeah buddy
yeah i'm actually really curious if brake fluid is flammable or not didn't blow up so it must not be
so we've got this little handy tool for motion pro basically just goes inside the piston
of the caliper here so let's tighten that thing down and you'll be able to work the piston out of
the caliper sometimes these can be pretty stuck in there so these pistons are a little stuck in
here so i'm going to use some compress there in the bleeder hole here and that should help push
it out i think won't even turn i think i bought the crustiest pair of brakes on ebay available
yeah we got one nice
got it trick works pretty good all right oh that was sick all right there we go i swear
i went back and forth like five times with these things looks like they're in pretty good shape i
don't see any scrapes on them should be able to reuse those now inside of here we've got
the piston seals be careful not to scratch up the bore of the caliper there
it's like surgery
sweet all right at this point the calipers pretty much all bare
nice good old harbor freight
battery number two okay this one says full charge what are the chances that this one works
yeah third time's a charm just for the heck of it let's see if i can bring this brake
lever back to life it's bent this is seized up let's see if we can break this thing loose
it's freaking brand new again now let's see if we can bend it back
lay some pipe you talking about an actual pipe like this
yeah i guess that'll work
oh no my brake lever [ __ ] well frick i put all that glove into it and it just broke on me
damn i had it like working perfectly smooth too
i really wanted that one to work we got a back up here that'll work fine pretty pitted up though
time to get all this stuff cleaned up just gonna drop it over in the parts washer this is the
parts washer i built a couple years ago it's all heated this is a good old harbor freight
unit does the trick pretty good got a little flow through brush here time to get cleaning
i forgot to pull apart the master cylinder here just got to pull out the circlip and
the piston and all that good stuff will slide out of there
so there's a few things i want to clean up with the bench grinder there's a bunch
of pits in this brake lever you guys probably think i'm crazy for reusing a brake lever but
it's good as well use it and then the uh cap i'm just going to smooth out all this stamping here
and just gonna smooth out this guy as well
not too shabby for a stock cap there
all right well we have that uh parts washer all heated up and going we're gonna clean up some
other parts we got a couple bins worth of goodies here let's start digging into it see what we got
got a crank set of cases
that one's all chewed up right there
cylinder head cylinder
clutch and a bunch of [ __ ] parts in there just freaking scattered all over and we've
got the clutch covers so what we're doing with this is we are going to be cleaning it all up
and actually uh doing a little demo or a little fun thing for you guys to do at the show
coming up this saturday we're gonna have this set up on engine stand
have you guys try your hand at building it so i just gotta make sure everything is here it looks
like we've got everything except for maybe like the clutch plates so we're just going
to clean this stuff up and get it ready to put together for you guys to check out this piston
cracked right there busted off the skirt all scraped up so the show is in post falls idaho
so it's saturday the 21st and so we're gonna have a little boost set up out there and
have some bikes and this engine so if you guys are in the pacific northwest come on out it's gonna be
could be a blast i want you guys to take a guess which engine this is the year and the model i'm
sure a lot of you this will be pretty easy but it might be tough to get it down to the exact year
we've got the engine all cleaned up just got basically all the oil and grease off of it it's
nice and rusty still lots of corrosion a lot of the bearings are out it's just nothing not going
to be anything like uh too serious here basically going to drop the crank in without a bearing that
way obviously you don't need to press it in and to start dropping [ __ ] gear shift stuff
and uh should be pretty simple but yeah hope to see you guys at the show and having fun
with this thing we still do have some of these giveaway shirts left just a few sizes in each one
we've got red one two stoked a long sleeve two strokes 20 20 and then a cr shirt has a picture of
the cr250 on the back of it so if you guys want to grab some of these while we still have a few left
just head over the website primeamx.com and add twenty dollars to your cart and
you can add one of these shirts for free just click the free items section of the website
so happy shopping guys so that's pretty much going to wrap up the video we are going to be
working on the front brakes in the next one get that all coated up and back together and hopefully
have the parts for the rear brake and uh we'll probably do some filming at the show too see how
that engine idea works out but appreciate you guys watching and i'll see you the next one take care
you