Infraction Need advice on my Infraction build

[Jezzzy187]

I got my new Infraction the other day was super excited...I made sure it ran then i tore it apart to turn the motor mount around like someone said I could to put a bigger motor and esc in it....my first problem is when I do this the rear driveshaft is almost to short lacks a fraction of coming out of the drive cups...has anybody had this problem or other problems Ill run into converting this to 8s?

 

[jondilly1974]

I got my new Infraction the other day was super excited...I made sure it ran then i tore it apart to turn the motor mount around like someone said I could to put a bigger motor and esc in it....my first problem is when I do this the rear driveshaft is almost to short lacks a fraction of coming out of the drive cups...has anybody had this problem or other problems Ill run into converting this to 8s?

Those stock shafts have QC issues too. Check out Vas’ channel @Aussie RC Playground for how he fixed his.

 

[Jezzzy187]

Those stock shafts have QC issues too. Check out Vas’ channel @Aussie RC Playground for how he fixed his.

his channel on youtube??

 

[adidas303]

yes, just search that name on Youtube, pulls his channel right up!

 

[Jezzzy187]

Is there any specific video I should look at?
I watched all his videos on the infraction...they are mostly stock tests with different pinions...what I am wanting to do is Mod it as far as my checkbook will let me..I have already started decided on the mamba monster XLX with a tp power 4070..

 

[adidas303]

I'm not sure if Vas did a video on the 'fix" for an Oscillating Center Driveshaft, but the thread I found has the product to correct the problem.

https://www.arrmaforum.com/threads/...-been-posted-already.14400/page-2#post-184682

Skip to Post #21 - You'll see the post number next to the Bookmark and Share buttons! Hope it helps!

 

[Jezzzy187]

I'm not sure if mine oscillates yet or not it's just almost too short after I swap the motor mount around is what I'm getting at

 

[LibertyMKiii]

Could you post a picture. We have yet to hear about that issue.

 

[adidas303]

Sorry about that, must've of confused the issue. Yea, essentially a 'short" driveshaft is definitely something I haven't heard of so far.

 

[Jezzzy187]

It has an excessive amount of slop for sure like it's almost to short?

 

[LibertyMKiii]

My Kraton had this amount of slop. If you stuff a rubber o-ring in there on either cup it should keep the dogbone nicely in the middle. (might take 2 O-rings in some cases.

 

[Jezzzy187]

I will definitely have to try that!

 

[adidas303]

Seeing those pics, I think mine has about the same amount of slop, just figured with the higher speed/power it was needed. I've never had an issue with either so far. I'll double check when I go to maintenance mine here soon.

 

[Jezzzy187]

So I took it back apart flip the motor mount back around the correct way and the slop in the drive rear drive shaft is a little better but I will not be running it this way

 

[adidas303]

they have made some aftermarket driveshafts, maybe check into the lengths of those?

 

[Rich8692]

they have made some aftermarket driveshafts, maybe check into the lengths of those?

I wish they wernt $90 for the shafts I also think you need their braces aswell to fit the beefy shaft so your looking at $150ish for all that I don't know if the mods and price are justifiable plus I was really worried about the shaft problem and so far I know a few people that have gotten infractions from this second batch that just shipped and no one has had any oscillation problems so far but I will say my infraction has almost the same amount play on the rear and oringed it and have not had any problems so far.

 

[Jezzzy187]

I found those drive shafts on eBay made by supahd For 68$ and 16$ in shipping from Australia

 

[adidas303]

My thinking, that is a bit overboard on the cost of those! ?

I'm most positive my Infraction was from the first batch, but I haven't noticed that problem. I really only noticed the slack when switching out diff fluid last time and again just thought due to the power running it, might've needed that lil extra slack..

 

[Jezzzy187]

You could be right Adidas... I just don't have that kind of slack on any other model they're all powered the same... Stock that is... My stretched Typhon has a max 6 esc and 4092 hobbystar it's way got way more power then a stock infraction and it doesn't have near the slop even after I mounted it on a Kraton frame.... Pretty sure mine fraction is a batch 2

 

[Jezzzy187]

I'm starting to get it mocked up and figure out what I'm going to put in this thing and how the batteries are going to go it's my winter project