Talk 1520 - your experiences

[Jahay]

loc tite does not work with plastic diff cups.. if you can and its available, you should try and run the alloy diff cup! will allow no flex within the cup, and loctite will actually work

[pinkpanda3310]

That's what I was thinking, thanks Jahay.

[pinkpanda3310]

So I let the plastic centre diff be killed I was just to lazy to change it before it died Did a good job too, melted the gears into the cup. I had to cut the cup to get the gears out.

I had the nova diff cups here waiting for the event. From my understanding thicker oils work the gears harder. So I made another diff using only the outdrives from the old one, nova cup, new inners and 120k wt oil. Took it for a bash out the front of my house and loved it The wheelies were long and low. Worked the drivetrain hard. Then unexpectadly the car flipped on it's lid. Didn't think much of it first time round but it quickly became apparent the centre diff was locked within 1 battery pack

Before you say anythng - Yes it was shimmed properly, I double checked myself on that knowing what would happen if I didn't. When I took it out again the screws in the cup on weren't tight. They were all the way in but not nipped up (yes, I used locktite) and the diff spooled one way but not the other. The internal gears showed some wear but I thought I could get more use out of them.

I put an extra shim in and re-assembled it. I also cut some slots in the screws so I can crank on them a bit more (I hate hex keys for stuff like this). I haven't used it yet but I think I need to rebuild it (again) cause it is still very notchy one way. I'm thinkng to just flip the internal gears so it spools nicely on acceleration.

If problems persist I might have to stick with lighter oils. Or would an ofna spider fit in an rc8t?

[ANGRY-ALIEN]

Damn... I have noticed the temps in the ofna spider i'm using spike up pretty quickly during the runs... I normally see numbers around 150° to the higher 160s...
the diffs seem to be working really hard while transferring all that power from the cc1520...

It's been some time since my last update... Ive been using some Novak pinion for a little while now and I must say, I impressed... they have performed nicely...
the cogs only have a polished effect on them... nothing unexpected... So I guess I'll be keeping them... I finally got some vids of the truck with the 1520 powering it... see the below link...

| flm maxx | carbon fiber | ofna spider | cc 1520 1Y 1600kv l 1 ----- | flm maxx | carbon fiber | ofna spider | cc 1520 1Y 1600kv l 2

Alien