Why Locktite is good - aka Whoops!

[Amoeba]

So I finally get this used HPI RS4 MT tuned and blazing along just dandy, bashing around in the backyard and having a grand old time when suddenly... no movement. I give it a few revs to see if engine is still responding. Yup, all good. Well dammit, let's go pick it up and see why it hates me this time.

I wander over, pick it up and notice that the engine seems to be... rattling. Moving independently of the chassis. Doing a little sideways boogie. Uh, that can't be good. Kill the engine and turn it over to discover I've lost 2 engine mount screws and the other 2 have a deer-in-the-headlights look as I caught them making a break for freedom.

Now for the bad news.

That my friends is a fine example of a stripped (melted) spur gear. Let this be a lesson to you. Locktite is your friend. Don't let this happen to you. Let me screw up on your behalf


ps: Replace with stock or go with a steel or other material spur?

 

[Rolex]

I prefer to stay with the stock material. It's good to keep a 'weak' link that's easy to replace. Go with a steel spur and you'll be opening your trans when the next gear strips.

 

[Amoeba]

I prefer to stay with the stock material. It's good to keep a 'weak' link that's easy to replace. Go with a steel spur and you'll be opening your trans when the next gear strips.

Thanks Rolex. I figured as much but wanted a second opinion. And I wasn't sure if there were stronger composites available than stock but not as unforgiving as steel. Trying to find a happy medium between melting plastic and transmission funtime.

 

[brad55102]

been there, done that!! it sucks, SO I no longer remove the engine mount, i remove the engine from the mount. This solves the problem.

 

[Webbage]

Well yep Locktite is the stuff of the gods, BUT I got the other end of the stick today. I have my dremel clamped in my hobby vice at the moment acting as a cleaning wheel as I tried and cleaning tons of used Locktite crust off the screws in my Axial's tranny. was hard work, involving spinning a nut on and off 2 or 3 times then cleaning the loose garf off with the dremel and a stiff nylon brush.

Using it is one thing. Getting it off is quite another!

 

[Amoeba]

Well yep Locktite is the stuff of the gods, BUT I got the other end of the stick today. I have my dremel clamped in my hobby vice at the moment acting as a cleaning wheel as I tried and cleaning tons of used Locktite crust off the screws in my Axial's tranny. was hard work, involving spinning a nut on and off 2 or 3 times then cleaning the loose garf off with the dremel and a stiff nylon brush.

Using it is one thing. Getting it off is quite another!

I hear ya. I wonder if there is a form of locktite or similar product that can be used on metal->plastic joins without eating the plastic or being *too* strong a bond and stripping the plastic threads if you ever do need to remove. Yesterday I watched a friend have to chase a wheel that popped off my Stampede he was bashing with. The plastic-lined nut holding the wheel on went byebye.

 

[MrClean]

I learned the same lesson, the exact same way.

 

[RC Addict]

I prefer to stay with the stock material. It's good to keep a 'weak' link that's easy to replace. Go with a steel spur and you'll be opening your trans when the next gear strips.

+1 Same with every other component on an RC. Steel spurs and aluminum everything only means that the next weakest link will break.

 

[charliejp]

Watch those bulkhead screws they strip and pull out pretty easy. I've got an MT2 and an MT2 18ss w/ OS engine. I've only burned 1 spur gear between the 2 so you should be allright there. There great little trucks when everythings tight and working right. Not a fan of HPI mills thow. Have fun with it and dont forget the locktite.

 

[BradZ_09]

Whats a mill?
Btw funny story lol

 

[RatzoRC]

Mill is another word for engine.

 

[NitroAidy]

Thats a sorry sight, one i'm only too familiar with, like others have said though its better to have a weak link like that then to destroy something more expensive..