B4 Vega Setup

[grelland]

thanks, this was pretty close to my current setup. I will have a chance to test it on our new track tomorrow I hope, then I will let you know how it works.

This is an astro track wiith a couple of quite bumpy sections, and a couple of not so big jumps.

[grelland]

Hi guys, I see from the other threads that more and more people are getting their b4 vegas, and that is good

Meanwhile, I have had a chance to test the car at my local track, and so far I am really pleased.

I am aware that not so many have tested the b4 vega that much yet, but maybe someone with a more general knowledge can help me in the right direction.

As mentioned, the track I run on is an astro-track, where parts of the track is quite bumpy.

I have more or less used the setup that nick posted on petitRC, and in the rear I have green springs, 35 oil and ghea tapered pistons (#2, I think).

I am a little confused on the rear shocks, as on my B4s I have mostly used silver springs and lighter oil (30 or even 25), now the "PetitRC" setup suggest softer springs and stiffer oil... ) I see scotty suggest 30 oil and silver springs, so that might be the direction to move then?

Now the question is that on the bumpy section, the rear end does not seem too settled, I started out with the ground clearance a bit too low, so the chassis bottomed a lot, but today I was slightly above "arms level", and it seems the chassis is not hitting the ground, but I "lose" the rear end in the high speed bumpy parts.

I compare with my sons' b4s, and they are a lot better in that section (but the vega is much faster in the sharp turns ), and they both run silver springs and 25 oil.

So what direction shoud I go? Lighter oil, or stiffer springs (as I feel the b4s works better..) I currently have no weights under the lipo. Would that help the issue?

I see that I also have tendencies of traction roll at the end of the straight, especially as I raised the rear.

Looking forward to even further improve the handling of this nice car

[nicVEGAchildJR]

grelland.
and some anti squat to the car but it will also increase steering

[Scotty]

After running on a local farely flat but more bumpy track on sunday, i ran the vega with silver springs front 35w AE 2 pistons and green springs rear 30w AE 1 pistons with FULL RUDEBITS weight kit ( 28g Servo, 92G Speedo and 62g Lipo ) with 1 anti squat. I found this settles the car alot more, ableing to drive into and around the corners alot harder and push on more. Tryed without under lipo weight found the car not settling well after jumps.
Running the wishbones just below level at the front with the driveshafts level at the back. It was a fairly high grip track so on the front running middle top and outter bottom with slim rims and stagger tyres and rear running middle top and inner bottom with yellow part worn spikes with meduim answer inserts.

[MHeadling]

Cheers for the set up info, I'm pretty close to that but silver all round.

What toe in block? I'm going to try 3 deg

What rear camber link position?

[nicVEGAchildJR]

If you run0.0 deg hubs there is a mod that can be done and it will improve the handling of the car

[grelland]

Thanks guys, I have ordered the lipo weights, at that seems to be a vital part of the setup. I already had 1 mm anti-squat, do you recommend even more?

Will give it a try again later this week

[Scotty]

I'm running a 3.0 Degree toe block with 0.5 Degree Hubs. But have been advised to try more will test this weekend. Hope this helps.

[MHeadling]

Thats what I'm running Scotty, 3 deg and 0.5 rear ali hubs.

Any idea on a camber link position for the rear??

[Scotty]

Hub 3rd one out and shock tower top 2nd one in with 1 degree of camber. Hope this helps. Scott

[MHeadling]

Cheers mate

[grelland]

I had a chance to try a couple of packs again tonight (the advantage of building a new track 5 minutes from my house ), and since I have not received the under-lipo weights yet, I only changed the shocks; now I tried 30 oil and silver springs, and it certainly helped a lot. Cant wait until the weight arrives

And here is a shot of the car after two back-to-back packs:

That is the reason why I love astro We had buckets of rain yesterday, and the track was really nice and dry, and as you can see the car is spotless

[grelland]

Lipo weight arrived, and yesterday I had another go, and I changed to blue springs up front in order to minimse grip roll midways in corners, and kept the silver/30wt in the back. And as people have said; this really settled the rear end down

I can now push a lot harder in the corners, and I am sad to say, that from here onwards, it will most likely be my driving skills that limit me

One more question, My personal feeling is that the staggered ribs have a very "aggressive" feel to them; is there a front tire with slightly less grip available, or are there other changes to the setup I can do to calm the front down a little; especially entering corners? I have some toe-in already

[RudeTony]

Originally Posted by grelland

Lipo weight arrived, and yesterday I had another go, and I changed to blue springs up front in order to minimse grip roll midways in corners, and kept the silver/30wt in the back. And as people have said; this really settled the rear end down

Happy the weight arrived and yes it makes the car so much easier to drive.

[InsideLineModels]

Originally Posted by grelland

One more question, My personal feeling is that the staggered ribs have a very "aggressive" feel to them; is there a front tire with slightly less grip available, or are there other changes to the setup I can do to calm the front down a little; especially entering corners? I have some toe-in already

If you raise the inner front link that will chill the car out on turn in and give a little more mid and exit. As a starting point on high grip I'd be long on hub, short on tower with 3 (maybe 4) washers and on low grip go to 1 washer. I've not driven the b4 vega but lm just carrying what I know over from the x6.

I'm assuming you are using the standard staggers and not the cut ones?

Also, what caster blocks do you have on there?

Kev

[InsideLineModels]

Also, do you have the front shocks in the inner or outer hole on the wishbone?

[grelland]

Originally Posted by InsideLineRacing

Also, do you have the front shocks in the inner or outer hole on the wishbone?

inner

[grelland]

Originally Posted by InsideLineRacing

If you raise the inner front link that will chill the car out on turn in and give a little more mid and exit. As a starting point on high grip I'd be long on hub, short on tower with 3 (maybe 4) washers and on low grip go to 1 washer. I've not driven the b4 vega but lm just carrying what I know over from the x6.

I'm assuming you are using the standard staggers and not the cut ones?

Also, what caster blocks do you have on there?

Kev

thanks, today I have the link in the positions you say, but only 1 washer
standard staggers
25° caster blocks, trailing axle spindle

[InsideLineModels]

Putting the shock outer on the wishbone will help, and also it might be worth thinking about 30 degree caster blocks as they will make the car less pointy.

Definately try raising the link though if the grip is high.

[grelland]

great, thanks a lot