Drivetrain Woes - Page 3 - RC-Monster Forums

E-fanatic · 12.10.2008, 05:30 PM

My brushless lst2 had a bulletproof drivetrain! I am hoping I can get this revo that way or I will have to get rid of it. I will see what dan at kd has to offer. It will have to wait until after christmas b/c I'm broke too!

E-fanatic · 12.11.2008, 07:08 PM

Well I picked up a set of vantage racing cvds and they fit with the extended rear arms. I will find out how durable they are this weekend. I am just happy they fit without issues!

E-fanatic · 12.13.2008, 06:31 PM

Well 3 runs and the pop metal vantage racing cvds all broke! The plastic ones are holding up better. Man I am pissed. I just wasted money on junk !

JThiessen · 12.13.2008, 07:24 PM

Quote:

Originally Posted by E-fanatic

Well 3 runs and the pop metal vantage racing cvds all broke! The plastic ones are holding up better. Man I am pissed. I just wasted money on junk !

Instead of blaming all the different shafts that you continue to break, you might want to consider that you "wasted" you money with those extended arms. Just a thought.

E-fanatic · 12.13.2008, 08:03 PM

Tell me why the front ones broke first and how the he11 does that have anything to do with the extended REAR arms? The rear ones held on the longest. I dont see how with what little power I am putting out it is snapping metel shafts.

I would easly take off the extended rear arms if I thought thats what broke the cvds but no way was it the arms! I have also moved my arms to the 10mm instead of the 19mm (to help with turning)

Unsullied_Spy · 12.13.2008, 08:10 PM

Can you post a pic of the busted CVDs?

If you are on the brakes really hard that could put some stress on the shafts, but they should have held up longer than 3 runs.

E-fanatic · 12.13.2008, 08:23 PM

My motherboard died on my computer so I am on my wifes wii system. So I cant post pics until I can get to my brothers house. Will try tomorrow! I have my brakes set to 35% now so they dont grab hard. Also have my punch on 100% and my slipper loose. I would really have to try to even get a wheely. The fist one broke just turning in the yard 3 mins in on there first run. The others broke running on the track.

JThiessen · 12.13.2008, 08:38 PM

Quote:

Originally Posted by E-fanatic

Tell me why the front ones broke first and how the he11 does that have anything to do with the extended REAR arms? The rear ones held on the longest. I dont see how with what little power I am putting out it is snapping metel shafts.

Well, its going to be tough for us to diagnose on here, but as stated before, pics would help.
Something other than the shafts is causing your issue. You have broken far too many compared to what others are experiencing - and your not running any more power than most others here.
Recheck all of your suspension. Make certain the arms are all on the right direction (I found out I had been running my RPMS upside down after a year of running it - even though I know I double checked it). see if you might have bad bearing in the axle carrier, or possibly the wrong bearing, that would allow excessive slop in the axle.
Since this one was a front, was its damage different than when you broke the rears? I experieced bent metal shafts when I ran them with RPM Arms, thus I converted to plastics, and havent experienced any problems (other than loosing C-clips).

You just have to take a step back, and remember that often the symptom is not the cause of the problem!

shizzon · 12.13.2008, 11:23 PM

This is exactly why i didn't go out and buy a set of cvd's, it seems that they dont do much for durability. I also contacted Dan at Kershaw designs as he pretty much said that he would not be able to make anything better that whats out there.

It seems like the best alternative would be to see how the Summit drive shafts hold when they finally com out. I wish a high caliber company like UE would come out with a set, but it seems like the dont come out with new products anymore....

JERRY2KONE · **Unfortunitely. -** 12.14.2008, 01:26 AM

Yea unfortunitely Robin at UE said that making stuff for the R/C community just was not proffitable anymore, hence nothing new or even anything for replacement parts available. From all of the garb on the forums it seems that he has moved on to the harley Davidson hop-up products to make his fortune. That is a very sad thing for us. UE is the best stuff out there.

Why don't you try talking with Bill at RC alloys and see if he would be willing to fab something up that everyone could use in that class? He will need specific measurements and maybe a sample of what you want, but he is pretty resourceful with his business. Or even talk with MonsterMike here at RCM and see if he can help. That is what these guys do.

Quote:

Originally Posted by shizzon

This is exactly why i didn't go out and buy a set of cvd's, it seems that they dont do much for durability. I also contacted Dan at Kershaw designs as he pretty much said that he would not be able to make anything better that whats out there.

It seems like the best alternative would be to see how the Summit drive shafts hold when they finally com out. I wish a high caliber company like UE would come out with a set, but it seems like the dont come out with new products anymore....

E-fanatic · 12.14.2008, 05:12 PM

Well, I just got 2 sets of the mip1665 cvds ( these are huge{the same size as the ones that were on my lst2} and harden steel) They were $65 for 2 so it was $130 total. I just went out to try them and wow they worked like a champ! I bet I will kill the diffs before these cvds!
P.S. They also fit the extended arms with out issues.

shizzon · 12.14.2008, 06:40 PM

thats good to hear, hopefully they will hold up for you. If they do i might have to consider a set for myself.

E-fanatic · 12.14.2008, 08:01 PM

I have put another battery pack on the cvds. I was afraid that I was going to break somthing b/c I was really hard on her. I just want to make sure they are going to hold up! I was harder on the trucks drivetrain this last battery than I have ever been. I pulled off a tripple back flip off a ramp too! It was sweet. I took off the wheely bar to do a few standing backflipps. The mips are doing well so far.

The vantage racing cvds have a 4mm shaft and the mips have a 6mm shaft! The cups are 2mm thicker(much more metal) on the mips.

E-fanatic · 10:16 PM

Well I wanted to do more testing on the mip cvds and all I can say is wow they are strong. I now have to get another rear diff and bulkhead. Does anyone make a aluminum rear bulkhead? This is my second broken one :) ! Also these cvds are the shizznits. I knew something was going to give today and I am glad to say it wasnt the cvds. I think I might have to put the settings on the mmm back on low !

Edit: This thing flys on 6s too. I think landing will full throttle with the 6s is what killed the diff and bulkhead. Just a thought!

If you have the money these cvds rock and seem to hold up to crazy amounts of punishment

shizzon · 12.15.2008, 10:32 PM

yeah i have broken 1 rear diff and 3 rear bulkheads, not too mention the numerous driveshafts and a chassis. lol, the E-revo is tough but i guess i drive tougher!!!

But those MIP cvd's seem like a good option for me, by the way what is your setup in your E-revo (motor, batts, esc)? if they are working for you on 6s than im sure that they will hold up to my setup on 4s and 5s.