Infraction - 1/5 scale motor conversion

[Porschetech🇬🇪]

I thought I’d share my lil conversion that I did to my infraction. I had no issues whatsoever with the K8s motor esc combo and I really enjoyed it. I saw the hobbywing motor at my lhs and wondered how it would perform on mine. I had already switched the esc for a Traxxas one because it had the bec for my light kit.

so here’s my list as follows

1) 1100kv 1/5 motor
2) 34T pinion
3) 42T spool (previous mod)
4) PPS alloy diff mount/motor mount kit with 1/5 scale slider
5) PPS alloy diff cover
6) Traxxas 8s vxl esc (previous mod)

I plan to put 100k oil in the front and rear diffs over the weekend and then install the spektrum 6100AT receiver. Hopefully I’ll have no problems setting it all up and dialing in the new values. I’ll make another vid with my top notch camerawoman (my daughter).

Pics of the build with final assembly. I’d be curious to see how well it performs. I’m sure tons of torque and on 8s.

 

[crimsonfancy]

Looks awesome! Fitment seems perfect ?

 

[Porschetech🇬🇪]

Looks awesome! Fitment seems perfect ?

Thanks ?

downside is that it now weighs a ton ?

 

[crimsonfancy]

Thanks ?

downside is that it now weighs a ton ?

Well, I know I'm looking forward to your top notch camera woman translating a speed and power run to some video so we can see it rip! I understand these best videographers can be expensive but ice cream and pizza is how I'd pay my crew. lol

 

[Porschetech🇬🇪]

Well, I know I'm looking forward to your top notch camera woman translating a speed and power run to some video so we can see it rip! I understand these best videographers can be expensive but ice cream and pizza is how I'd pay my crew. lol

I got those ticked. I have chocolate, strawberries, whipped cream, popsicles and cranberry/apple juice.......oh and jelly beans

I just gotta make sure I don’t hit her this time ?

 

[Turbobrick]

Nice! The motor mount having a screw to adjust backlash is great.

 

[Porschetech🇬🇪]

Nice! The motor mount having a screw to adjust backlash is great.

Thanks. Yeah that’s a nice lil touch that PPS came out with

 

[Turbobrick]

How's heavy is this at present without batteries?

 

[Porschetech🇬🇪]

How's heavy is this at present without batteries?

I would hate to imagine. I wish I had some scales to weigh it. It is heavy.

 

[Turbobrick]

I was just asking as my dual motor build is now lighter than a stock infraction by 3 oz

 

[Porschetech🇬🇪]

I was just asking as my dual motor build is now lighter than a stock infraction by 3 oz

I’d like to weigh it as I am curious. The motor is heavy and two 4s hard case batteries aren’t exactly light either.

 

[Turbobrick]

Yeah I can imagine the 6s packs used here are cheapo's and hit 12 ilbs + so my graphene's will Defo take it a bit more

 

[Porschetech🇬🇪]

Yeah I can imagine the 6s packs used here are cheapo's and hit 12 ilbs + so my graphene's will Defo take it a bit more

Unless I’m weak mine feels like 20 lbs

 

[Porschetech🇬🇪]

Diffs repacked with 100k oil and also fresh grease on the crown wheel/pinion gears. Tomorrow is looking good for vid time

 

[drjim]

Dumb newbie question, I've never had different grades to compare, and I can't find the conversion chart...

The stock diff oil is listed as 10,000cst. Is your "100k" oil the same as 100,000cst? That's like 10x the viscosity of the stock stuff. That almost makes the diffs lock up, doesn't it?

 

[jondilly1974]

Dumb newbie question, I've never had different grades to compare, and I can't find the conversion chart...

The stock diff oil is listed as 10,000cst. Is your "100k" oil the same as 100,000cst? That's like 10x the viscosity of the stock stuff. That almost makes the diffs lock up, doesn't it?

100k is 100,000 cst. It is 10x thicker but not enough to really lock a diff. Even on a 3S rig, it is for sure stiffer, but far from locked.

 

[Porschetech🇬🇪]

Dumb newbie question, I've never had different grades to compare, and I can't find the conversion chart...

The stock diff oil is listed as 10,000cst. Is your "100k" oil the same as 100,000cst? That's like 10x the viscosity of the stock stuff. That almost makes the diffs lock up, doesn't it?

nah still turns but far from being a locked diff. I’m experimenting with thicker oils to see what it does.

Oh well that lasted long. That Traxxas esc fried itself me thinks ?. I bound the receiver to the transmitter and was about to proceed to calibrate the esc and then I had no throttle. The green power light stays on but also there’s 3 red leds that also stay lit at the same time. I found some info online that said it’s “critical error” and I need to call Traxxas.

what do I tell em? ?

 

[drjim]

Thanks for the info, guys! This is the first time I've had cars with "real" differentials in them. Most of my experience from way back when was with the diffs that used ball bearings, like an old RC-10.

And tuning the handling by changing the viscosity of the lube is entirely new to me.

Now I gotta get a better handle on tuning the shocks.....

 

[Porschetech🇬🇪]

Thanks for the info, guys! This is the first time I've had cars with "real" differentials in them. Most of my experience from way back when was with the diffs that used ball bearings, like an old RC-10.

And tuning the handling by changing the viscosity of the lube is entirely new to me.

Now I gotta get a better handle on tuning the shocks.....

I’m just experimenting. Who knows maybe I’ll want a thicker oil ??‍

I’m just curious to see how it responds to oil thickness. Rebuilding the diffs didn’t take too long either. About 1 hour per diff. I plan to do the same on the new limitless and I may take a vid or pics of it.

 

[adidas303]

nah still turns but far from being a locked diff. I’m experimenting with thicker oils to see what it does.

Oh well that lasted long. That Traxxas esc fried itself me thinks ?. I bound the receiver to the transmitter and was about to proceed to calibrate the esc and then I had no throttle. The green power light stays on but also there’s 3 red leds that also stay lit at the same time. I found some info online that said it’s “critical error” and I need to call Traxxas.

what do I tell em? ?

Just let them what it did as you went to use it bro. Plugged in your batteries to run your rig and it's now giving you this problem! The ESC shouldn't do this, this new. You may have to pay shipping cost if they have you send it in.

Thanks for the info, guys! This is the first time I've had cars with "real" differentials in them. Most of my experience from way back when was with the diffs that used ball bearings, like an old RC-10.

And tuning the handling by changing the viscosity of the lube is entirely new to me.

Now I gotta get a better handle on tuning the shocks.....

Stock CST weight for our Limitless/Infraction is 2000cst. Honestly you'll be wanting to test higher viscosity then this weight as anything lesser, these rigs will body roll around like Cadillac's.