hello everybody welcome to a new episode of How To DIY Rc Wltoys K989
1/28 Rc Drift Project episode number 13 where we're going to upgrade
the servo finally where you been waiting on for so long it's going to
happen and right here we have the stock server and the upgrade servo that we
want to try out it is a 9 gram servo the stock servo is original 5 gram
and there is nothing wrong with it because I'm pretty happy with it
after bashing it jumping it at the skatepark crashing it it's been through
a lot you guys know it and it still survived and still working
pretty good but it's got a really strange servo arm that is like a
different one I can't use anyone like that to put on this servo because that
would just make it really easy but I found a 9 gram servo that is the same
size as a stock servo and will fit perfectly on its spot and they had to
make a little modification and removing the lower cap because it was sitting in
the way and this way you can almost see it fits perfectly because there the stock servo
got a little angle over here like if you put it side to side it will like
yeah that's going to fit me then there's a little cutoff for the motor wires that
was sitting in the way that's wherever you have removed the bottom plate that
makes it really easy not to fit it there's enough space but there's not
enough space to use the original stock motor mount servo mount so we have to
figure out a different way touching this servo to the chassis but there's one
little problem that we have with this upgrade is because you have more steering
angle and this servo arm is a lot bigger when you're trying to move that around
it's going to hit the top plate the top plate will be sitting in a way for a
servo horn to move and to get us give us more angle and that's a little bit of
an issue some people solve that by removing the
top plate and drive it like that it gives the chassis a lot more flex it's
not so stiff anymore and and some people like that to drift as feel
some people don't it's also pretty hard on the pinion gears because there's
more flex they will be going in and out in and out and will worn out the pinion
gears a lot faster and they are pretty cheap so there's not really big problem
that come to break the bank cost only 3 bucks but still you know you want to be
careful with your stuff then maybe you can try it out I'm going to try it
out and see if I like that a little bit more flex and my chassis because I never
tried it out and I will say you have to try it out maybe you'll like it maybe
you don't and for that I already came up with a solution of course and this is
just a template we're gonna make that some carbon just like I want a good
chassis to carbon and this template give us that little bit a more space that
the servo horn needs to move around from left to right to give us that
maximum angle it's just actually pretty simple that we did just cut the cardboard
double the wide of the original top plate as you can see its the same width
poked out and this that space I've already measured it out and then I'm
gonna make it longer and even make it here like a cross angle I moved a little
bit too much cardboard because it's weak the more flesh you
have on this place the better and stiffer it while be but for that there are
a few pieces that are sitting up and high so maybe put them a few washers
under the screws that hold the front top plate to fix that issue that we have
with the upcoming upper arm that is sitting in a way for giving us
a little bit of flesh and stiffness now let us go over and mount
the servo and show you how to mount this servo without using the stock
servo mount of course because that's not going to fit for that we need some
sandpaper and make the under side of the servo a little bit rough they just
needed to have a rough surface so the glue better stick better to the chassis
and you be doing the same thing for the chassis and just gonna make it a
little bit rough don't be scared I'm going to see
anything of it because we'll be right sitting underneath the servo but as you
can see I already made it did it so let's make some two component epoxy
that hardens out in five to ten minutes hopefully you can see it a
little bit better now but this is two component epoxy 50/50 you don't need a
lot just a little bit and I just question of mixing it together really
quick don't waste too much time you got about five to ten minutes or about five
more than enough we a good very good drop of epoxy on it
now is the most difficult time because we already Center the servo
before you're going to try this or you're in trouble I'm gonna test it
one more time before we're gonna put it in there and put the screw on it's place
because this is the only chance we have
so it's good the way if tested it out before installing it because as you can
see there is not a center so we have to Center it up again like that there is
pretty Center and then put the screw in this place because after we have epoxy it
there's no more chance that we can get to the screw but we have some time
takes at least ten minutes for it to harden out could've remove that side piece but
I don't want to that was just a question of clicking on already the steering
angle I can check out what is the center with wheels make sure it's Center up
because this one time you're gonna glue it down and that's it
and you can see I put some tape behind around the servo to keep it away from
the soldering from the motor so it doesn't mean they're gonna be gonna
contact blowing up the servo it looks big
alright and now it's time for me to take a clamp keep it there for at least
a half hour and possible in a warm spot at least above 25 degrees
so definitely harden it out pretty quickly so sometime to Center oup the
servo you get a perfectly Center and then don't touch it anymore I leave it
in the corner and that takes a very long time for me but with only a second for
you guys so we're gonna be right back I'm welcome back guys and check out how
much steering that we have now it's going to make really sharp u-turns
we are so tight it's almost touching the spring so this is as far as
we can go and all just with using the stock radio so not upgrading to a
professional hobby grade radio and change some things in the menu in the
setup no everything with the stock radio just using a two and half
dollar 9 gram servo with a longer servo horn and removing the top plate the same
time we have shorten up the servo wires that was extremely long for my taste and we
have placed the receiver here at the end with just electric rubber band to hold
in place and use some tape to hold the battery in place
all saving weight saving weight is important for drift car to get the
maximum torque and power to weight ratio and I was going to be pretty interested
to see how sure the u-turns will be and how well it will be with counter
steering so I want to say let's go to the track and test it out
check that angle
this servo upgrade is a really good upgrade I like it give you extra
angle you can make it sharper u turn as you can see and it's also get you sooner
into trouble but it also takes you out of trouble it works both ways and really
good for counter steering when you drifting a crazy angle it those take a lot more
practice and also finding out if I'm liking these flexible chassis or I want
to get a more stiffer chassis so we have to make that customs carbon
top plate to check the difference that will be coming up in the next video
episode number of 14 of this Wltoys k989 1/28 scale RC drift project
that is full with upgrades and mods I hope you'll check out the little playlist
over here and I hope you subscribe for the next episode of course and if you're
interested in this little car then you can find all the links down below in the
description if you've any questions then please leave it down below in the
comments and I want to say goodbye until next time