Diff oil ?

[twisted]

whats in it stock ? going by the parts list i think 30k is in it but it feels awful light to be that.

im thinking of adding some thicker oil to get some better climbing out of it but i need a starting point.

so this is the reason i ask. :)

[RC-Fan]

the stock is 50k

[Carnage334]

50K is correct. Im probably moving to at the least 120K.

[twisted]

50K ? you think you would feel that. my diffs spin so free you would think they had grease in them

[RC-Fan]

the stock is 50k correction just read it on the manual the stock is 30K.

[kulangflow]

I'm running 500K diff fluid front and rear, and I am pleased with the results. They still diff-out enough for drive-ability, and it really helps in the snow and light crawling.

[rich8560]

in my truck I'm useing high quality high speed greese in my diffs and this stuff is awsome the truck works a lot better

[Eddie NYC]

I'm new to this hobby and just got a merv and a summit vxl is on the way too for me and the kids. No repairs yet but am starting to think about maintenance etc. I have a few questions about differentials & fluid.

1) I haven't been mechanically inclined but plan on learning because i want well maintained RC cars. Here's the dumb question: what is exactly does the differential do (believe spins the wheels) and how often should I change/add fluid too it.

2) under what circumstances would someone like me (a novice) want to move away from stock fluid weighting? What does going higher and lower do?

3) I know i asked how often I should change it, but when will I need to know it should be changed if something isn't working well (i.e., if it starts to do this, you need to change it)

4) Does the differential theory apply to shock oils too? I'm assuming stock weighting is ok for most general use? Here I assume I only replace when one starts to leak or should you replace all shock oils every so often?

Thanks!

Also, are there good step by step guides for replacing both fluids (diff / shock) for these specific cars some place? Saw some youtube videos for what look to be other ones.

[twisted]

I'm new to this hobby and just got a merv and a summit vxl is on the way too for me and the kids. No repairs yet but am starting to think about maintenance etc. I have a few questions about differentials & fluid.

1) I haven't been mechanically inclined but plan on learning because i want well maintained RC cars. Here's the dumb question: what is exactly does the differential do (believe spins the wheels) and how often should I change/add fluid too it.

2) under what circumstances would someone like me (a novice) want to move away from stock fluid weighting? What does going higher and lower do?

3) I know i asked how often I should change it, but when will I need to know it should be changed if something isn't working well (i.e., if it starts to do this, you need to change it)

4) Does the differential theory apply to shock oils too? I'm assuming stock weighting is ok for most general use? Here I assume I only replace when one starts to leak or should you replace all shock oils every so often?

Thanks!

Also, are there good step by step guides for replacing both fluids (diff / shock) for these specific cars some place? Saw some youtube videos for what look to be other ones.


1- the diff allows one tire to spin more then the other in turns.when they both spin the same amount it it drastically increases your turning radius. (wider turns) so in short the diff helps your truck turn tighter.

2- going to a higher diff fluid will help with climbing. with a truck that has light oil in the diff tries to climb an obstacle the wheel with the least amount of traction will spin. if a truck with heavier diff fluid were to climb the same obstacle it would have an easier time as the thicker fluid will slow the diff action down delivering power to both wheels.

3- only time you change diff fluid is if you want to tune the diff or if it has leaked out for some reason. it doesnt need to be changed on a regular basis.over time its a good idea to freshen it up as im sure it breaks down.

4- shock oil is totaly different. shok oil is used to damp the shocks. meaning how fast or slow they soak up bumps.for the most part, a lighter oil will make the truck react faster to bumps but it will also make the truck bottem out on large jumps. a heavier oil will handle the big jumps better but will not react well over small jumps.

also shock oil effects how the truck turns and handles in corners etc. the springs come into play too. changing shock oil is something that you will do to fit the needs of what you are doing with the truck. out of the box the truck is perfect for a begginer!

hoped i helped.

[Eddie NYC]

Wow, really helpful thanks. So for a beginner running around parking lots, the back yard, or fields, sounds like keeping it stock is good for now (oil). If I notice something leaking on the differential, sounds like I should pretty much keep that stock now since I'm kind of doing a little bit of everything now. Next time I go to the hobby shop, sounds like I'll pick up some shock oil but not differential fluid.

One last question, if one leaks (shock), is it generally a good idea to change all the shock oils at the same time and is there a market inside the shock that essentially says "fill line" or something. From looking at the manual sounds like I need a metric ruler too to measure how it should be set-up before attaching to the truck.

Thanks again!

[twisted]

Wow, really helpful thanks. So for a beginner running around parking lots, the back yard, or fields, sounds like keeping it stock is good for now (oil). If I notice something leaking on the differential, sounds like I should pretty much keep that stock now since I'm kind of doing a little bit of everything now. Next time I go to the hobby shop, sounds like I'll pick up some shock oil but not differential fluid.

One last question, if one leaks (shock), is it generally a good idea to change all the shock oils at the same time and is there a market inside the shock that essentially says "fill line" or something. From looking at the manual sounds like I need a metric ruler too to measure how it should be set-up before attaching to the truck.

Thanks again!

if one shock is leaking in the rear i just refill both the rear shocks. as for a how to, well its rather easy ,hard to explain. it takes practice but once you get the hang of it, it will become second nature. there are many tutorials on how to fill rc shocks on the net and in the book that came with the truck. no special tools needed.