Need help with my G3-build

[JoFreak]

@POS: You never stop learning, do you?
To be honest, I'm rather happy that I know a lot more about computers then I do know about for example how to get a nitro engine up and running
Comes in handy quite often


About the gearing problem, I allready mailed mike when the slipperentials and G3-mounts will be available, hope it will be soon.
Think I'm going for the all inclusive option right from the start.

And those are enough smilies for today...

[JoFreak]

oh man...
I hoped to sort all thins out and get all the needed parts within the next 3-4 weeks so I could assemble my truck in the easter vacations and take part in an event from 9th to 10th of may.
But first the problem of the slipperential not fitting into the g-maxx and now I'm waiting for a reply from Mike for a few days without even knowing if he got my mail, since my mail account isn't that reliable in terms of actually delevering the message I sent
I should really get a new e-mail service...


Mike, if you should read this, pleeeeeeaaaaaaassssseeeee send me an answer to either my mail or the private message I sent you. I assume you got your hands full with handling all the slipperential stuff, but it would really give me some comfort to know if got my messages, thank's a lot!

[Sammus]

Originally Posted by suicideneil

1. The pro gears are truggy ratio, which means you would have to use a much larger pinion/ smaller spur than normal to get the desired gear ratio for any given speed; normal buggy ratio non-pro diffs only need a pinion 1 tooth larger than compared to the normal emaxx diffs. Get the non-pro ones.

I'm not sure about this. I have a pro 2 evo and it has standard buggy ratio, but all the gears are a different metal, some kind of special hardened steel or something comapred to the normal ones.

Hardened Diffs
Diff pinion
Diff ring gear

Notice the 'standard' and 'option' part listings.

[suicideneil]

Both the pro and normal ratio diffs will fit any given HB truggy or buggy, but the specific ones Mike sells are for the Lightning- buggy ratio ones and pro truggy ratio ones, so our man would want the ones listed as buggy ones. HB also sell hardened and standard (non-hardened), but I dont believe that effects the ratios as such (mine are hardended buggy diffs in my maxx).

[JoFreak]

Well, I think I'm going for the pro diffs, because with the non-pro diffs, the truck is getting much too fast.

with the pro-diff:

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 15
Total Voltage: 18.5
Motor KV: 2300
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.93 : 1
Total Ratio: 12.61333 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 42550 RPM
Vehicle Speed: 57.71 mph (92.7 km/h)
Effective KV Value: 2300
KT constant: 0.59 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...


with the non-pro diffs:

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 15
Total Voltage: 18.5
Motor KV: 2300
Tire Diameter (inches): 5.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.93 : 1
Total Ratio: 9.70256 : 1
Tire Circumference (inches): 18.06 inches (458.83 mm)
Total Motor Speed: 42550 RPM
Vehicle Speed: 75.02 mph (120.51 km/h)
Effective KV Value: 2300
KT constant: 0.59 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...


At the moment I'm considdering to move down to 4S, because with 5S this is just supidly fast, at least according to the calculator. Normally I really like stupidly fast and powerfull things but in this case I would prefer if it was driveable

[Sammus]

...
Transmission Ratio: 1
...

Arent you going to have a gearbox in it?

[suicideneil]

I think he was planning on a center diff/ slipperential setup. That being the case pro diffs would be better yeah- 44t spur is about the biggest you can fit though before you have to start trimming into the x-braces for clearance.

[JoFreak]

Yap, neil is right!
Since the slipperential won't fit (46T as smallest spur is too big), I'm going to use a centerdiff with a 44T.

[JoFreak]

Short update, Mike just got the list and hopefully knows what to do considering the CD-mount.
Can't tell you how excited I am!!!

[JoFreak]

Hello again everyone!
Since my packet arrived in Germany this morning and is currently processed by customs (evil bloodsuckers!), I thought about a few things I still haven't figured out concerning the g-maxx.

1. I read that the 3605 servosaver/steering needs modification to fit into the 3606 e-maxx. But I don't understand what exactly I have to do. Furthermore I don't know if its necessary to do this modification when the parts are used in a G3-chassis.

2. What oil should I use in the diffs? Since I've never built an RC-car form scratch, I have abolutely no idea what oil is needed. Only for the CD I got an idea: 300k or 500k. Iirc 500k results in a more or less completely locked CD, I think I will use 300k oil as I want the CD to do it's job.
But on the front and rear diffs: absolutely no idea

That's it for now but I'm pretty sure there are more questions to come

[Arct1k]

Are you using hybrid diffs? I'd do 7k front 3k rear...

If using stock diff - I used to put 30k in F and R

This was for a Revo but similar for a max...

[JoFreak]

No, I'm using the HB lightning pro diffs, what do you mean with hybrid diffs? diffs for the hybrid bulkheads or what?

[Arct1k]

Hybrid - I meant full 1/8 scale diffs - go with 7 and 3...

[JoFreak]

Ok, and why the more viscous in the front?
What's the effect of this? Just asking, as I said I have absolutely no experience in these terms...

[Arct1k]

Here you go....

http://rc-monster.com/forum/showthread.php?t=5050