R/C Tech Forums - Tekno RC EB48.3 Thread

I tried searching and didn't find the exact answer.

I'm struggling with off power steering (or just getting through a corner tight vs taking it wide)

I used the Joe Bornhorst setup but I have gotten so far away from that that I'm not sure what to call it.

I am using 7/7/5 in the diffs and I believe 425/ 475 in the shocks. The car just won't turn into the corner, I can't comment if its getting out of the corner well because I have to go so slow to setup for the exit.

Any help would be appreciated.

Please post a setup sheet so I can offer help specific to your setup. Would recommend looking at your diffs and make sure they're free. Off the top of my head, raising the rear ride height or dropping the front. Lighter front sway bar should help a lot. Removing one or two steering stop washers.

jason07

10-23-2016 06:26 PM

Quote:

Originally Posted by jetgsr (Post 14711692)

Whats the surface your running on. Is it loose, dusty low grip, medium grip and jumps sizes. Maybe try going down in diff oils. I run 5/5/3 on a dusty low grip track and get great turn in and out of corners with 2 degrees camber with 1 degree toe on the front.

It's probably a medium grip medium sized track. Jumps aren't really that big and it has some tight technical turns which is my biggest issue.

jason07

10-23-2016 06:33 PM

Quote:

Originally Posted by shannow (Post 14712133)

What roll centers are you using ? And ride height ?

The droop is 120f and 134 rear

ride height is 28/28

jason07

10-23-2016 06:34 PM

Quote:

Originally Posted by Dragonfueled (Post 14711822)

I was having that issue also. Removed both swaybars and it helped allot. Also reduce rear toe.

If only I knew what the dots meant on the pill inserts.....lol I would be happy to reduce the rear toe:mad:

jason07

10-23-2016 06:38 PM

Quote:

Originally Posted by MattDub (Post 14712188)

Honestly, I have changed it so much that I don't even know where it is. It was the Ryan Lutz labor day shootout from 9-6-15.

I'm going to blow the whole car apart this week and change everything back to that original setup and start again.

MX304

10-23-2016 06:49 PM

1 Attachment(s)

Quote:

Originally Posted by MattDub (Post 14712188)

Here's mine:

deceit

10-23-2016 06:57 PM

Quote:

Originally Posted by MX304 (Post 14712400)

Here's mine:

dont see it :/

MX304

10-23-2016 07:00 PM

1 Attachment(s)

Quote:

Originally Posted by deceit (Post 14712408)

dont see it :/

Yeah I can't get it to attach. Keeps saying file size is too big. Anyone know how to reduce the file size of a .pdf?

EDIT: Maybe this will work...

Mark K

10-23-2016 10:13 PM

Quote:

Originally Posted by jason07 (Post 14712377)

It's probably a medium grip medium sized track. Jumps aren't really that big and it has some tight technical turns which is my biggest issue.

One of the easiest things you can try is removing the steering stop washers. A lot of setups call for 3-4 washers but for my particular driving style I just can't use them. I run the screw only. This buggy has a ton of steering built into it so a lack of steering on a tight track should not be an issue. Keep us posted on what you try and we'll try to get you sorted.

bigbenmbx7t

10-24-2016 01:36 AM

I removed my rear sway bar, pink springs up front 10/7/3 diffs rear ackerman arm position and removed 2 of the bump steer washers on the ackerman arm. locked down my servo saver, And I had to reduce my epa on my steering because it was so twitchy until I got used to how well it turned. light years better hope this helps

bigbenmbx7t

10-24-2016 01:38 AM

I also ran less droop I just ey ball'd it about 3/4 of a turn on the screw and that helped when coming into tight turns after being hard on the power

shannow

10-24-2016 04:19 AM

From your setup sheet I'd try 24mm or less front ride height and 1° toe out front.
The camber links are already giving you quite a low front RC compared to the rear RC to a car that, as said, has tons of steer.

My two cents as some says :)

Edit: Something just went across my mind : what tires are you using ? Sometimes it's as simple a that.

Bob Barry

10-24-2016 05:57 AM

Quote:

Originally Posted by MattDub (Post 14712188)

Matt, the biggest thing that I have found is guys are using other brand oils in their shocks and diffs and they don't feel the same. I was one of them. I switched to PT since the rest of the team used it and voila! My car does everything right all of a sudden.

If you don't want to switch fluids, I suggest going thinner than whatever is on the setup. If it says 7-7-5, try 5-5-3. In general PT seems to have a feel of being 2k thinner on diff fluid and 1/2 wt (50 or so cst) on oil.

Bob Barry

10-24-2016 05:59 AM

Quote:

Originally Posted by jason07 (Post 14712385)

The droop is 120f and 134 rear

ride height is 28/28

See my reply to Matt about the oils. Also you pretty much always run the front lower than the rear. I usually am 2mm lower in the front, but some guys go 3-5mm lower. Start at 2mm and see how you like it.

MX304

10-24-2016 06:34 AM

Quote:

Originally Posted by shannow (Post 14712678)

My tire choice depends on how much dust the track has on a given day. If it's dusty I'll run something like a Grid Iron II or Holeshot. If it takes rubber and gets a groove I'll go to a Blockade or switchblade. Those are common choices among everyone racing here.

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