tips for racing 1/8 buggy on astro

[Pulse]

Hi,

I know many UK racers run 1/8 on astro so maybe I'll find some help here

do you have any general tips to share to set up a car for very high grip tracks?

what tires do you use, shock positions, camber, toe settings..?

[HOTSHOT III]

My local astro track is even more grippy than normal astroturf in the dry.

On my HPI Vorza I run:

Schumacher yellow mini pins

http://www.racing-cars.com/pp/Produc...rts/U6723.html

Fastrax green inserts (hard)

http://www.modelsport.co.uk/fastrax-...roducts/366660

HotBodies oversize 1/8th buggy wheels

http://www.hpiracing.com/en/part/67527

The combination of oversize wheel and hard insert/tyre compound gets rid of some side grip and allows you to push a buggy harder without grip rolling. This setup has consistently given me my best lap time on dry astro BUT self-discipline is essential, the car will still have a lot of side grip so you must do all your braking and jumping in a straight line.

Also i've adapted a rear sway bar to fit on the front which makes a difference (0.5mm thicker) and I run hard springs with the shocks on the outer hole on the tower.

At this time of year you might also want to get some of these for when it's wet:

http://www.racing-cars.com/pp/Produc...rts/U6751.html

And some of these for when it's really wet (i.e puddles on track):

http://www.racing-cars.com/pp/Produc...rts/U6757.html

Hope this helps!

[Pulse]

this is a detailed answer, thanks!

I used to run prepared mini pins



probably the best performing tire on short & dry astro, even better when they wear but they are pretty agressive (maybe because of the normal aka inserts and wheels I used?)

aka crossbrace are good in hard compound too on astro, that's what I use outdoor at the moment it's an easy to drive tire

I'll have to modify the shock position as I didn't touch it for now. As well as shock oils and springs.

What oils do you have in your diffs?

[HOTSHOT III]

Originally Posted by Pulse

this is a detailed answer, thanks!

I used to run prepared mini pins



probably the best performing tire on short & dry astro, even better when they wear but they are pretty agressive (maybe because of the normal aka inserts and wheels I used?)

aka crossbrace are good in hard compound too on astro, that's what I use outdoor at the moment it's an easy to drive tire

I'll have to modify the shock position as I didn't touch it for now. As well as shock oils and springs.

What oils do you have in your diffs?

True, wheels and inserts make a big difference. A lot of the guys here went for the yellow minipin premounts but the sidewall isn't stiff enough making them aggressive and prone to griproll like you say (but that's why I recommended the silver minispike premounts for the wet, because when it's slippery a soft sidewall helps).

TBH I never had very good results with grinding rows of spikes off minipins, if anything it seemed to make the griproll worse but that may be because even compared to other 1/8th buggies, the Vorza is a big heavy car. When I cut a row of spikes off the rears on my 1/10th ZX5 I could feel the improvement straight away.

RE Diffs, I usually run 5k front, 5k or 10k centre and 1k rear, I haven't really experimented much with diff oils but 5k in the centre reduces the likelihood of the car ending up on its roof when you brake hard on the entry into slow corners and also helps if the track is bumpy.

[Pulse]

I could feel the difference when cutting the rows but it needs so much time that I'm looking for an easier solution

maybe these could be good, all new astro/carpet tires (coumpound I would say because the tread is known already)

6mik

[HOTSHOT III]

Originally Posted by Pulse

I could feel the difference when cutting the rows but it needs so much time that I'm looking for an easier solution

maybe these could be good, all new astro/carpet tires (coumpound I would say because the tread is known already)

6mik

They look interesting, if you try a set post up on here how well they work