I race on the same type of track the b4.1 do require alot of tuning and you have to tune them to your driving style start out with mafeilds reedy setup it is the one from 2011 when he is running the standard chassis then go from there with losi bb springs and the plus 8 i love my b4.1 just have to know how to tune it to your driving style and track conditions

So with the carbon c hubs are people shaving the u brace down a couple of mm

i bought a whole new diff, not the same grease in the kit with the thicker bottle, it was a thin bottle, first half came out watery...thats it i bet thanks!

Yes. The c towers should come with instructions on what to do.

Very new to the rc game. I just recently bought the b4.1 worlds kit and so far loving it. My ? Is what are the reasons to changing to the losi springs? Also is there a way to compare motors that are rated only in kv to ones in turns I know there is a lot of variables just curious if there's a way to get close I'm running a 5800kv out of my sc for the time being. Thanks in advance!!!!

BB Springs are awesome . Running Yellow rr and silver Frtwent from Running 17sec laps to very low consistent 16's .. First time out with them
30wt frt #2's 27.5 RR 3 drilled to 56's Dialed . Trying some green Tlr BB spring on Thursday .. More feed back on Friday ..

the reasons to covert to the bb springs is so there is no rubbing on the shock bodies and people say the cars lands jumps better and you are able to push it a little harder. I did notice that when I drove my b4.1 with these it did fell better and I would say do the upgrade to the bb springs they are worth the 25 bucks not to mention they look sick

That's impressive how do go about running them? Need to change the spring collars and cups ? I'm def gonna have to make this upgrade!!!

Search this thread. It's posted a number of times. Bob Barry has it in his Sig.

http://www.rctech.net/forum/10092874-post8971.html

I was wondering the same thing. Thanks brent701 for the tip on where to find it.

that sig was the smartest thing I ever did

on my new buggy, my springs aren't rubbing, guess im lucky or a 1% er LOL

Thanks so much guys that helps a lot I'll be doing this upgrade soon!!!! Also in this worlds kit has a weight with it but haven't found a whole lot of info where to put it. Thanks again!!!!!

the stock ones rub usually after a little wear. one of the local guys removes the color from them and said it actually helps reduce it. Haven't tried it but take it FWIW.

on the bb spring mod if I get the RPM/Traxxas spring clip, do I still need the GHAE ones???

Thanks