Grip Roll

[Rocking Donkey]

I am having trouble with grip roll on a high bite carpet. I'm not sure whether it is caused by the front or the rear and what adjustments to make. The car feels good around most of the track and at higher speeds the front/rear balance is good, but if I attack the sharper, slower corners I end up on my roof.

I'm running a B2 with yellow schumacher minipins as low as I can get the back and the front adjusted so that it is level with the front. Front: Green springs associated #1 pistons and 35wt oil. Rear: Silver springs, associated #1 pistons and 35wt oil. I started with James Welshy40's setup but think the carpet has a bit too much grip for this.

Any help would be much appreciated.

Ben

[Buggy Driver]

I had the same when I tried Minipins at the front on carpet on my B4 instead of Staggers, even after cutting them and adapting the setup quite a bit.
So, if its high bite carpet all around try yellow Staggers instead, they should solve that problem instantly. If you´ll miss steering afterwards, you can alter your setup or finetune the tires by slicing the ribs. You could also do some things setupwise instead like using (more) internal limiters in the shocks to limit the travel to lessen traction roll, but Staggers would do it way more significantly. On full carpet tracks they´re usually the tires of choice and used without inserts.

[Mike Hudson]

try letting off the throttle and letting your car roll into the tight slow grippy corners then put throttle back on exiting, also try schumacher yellow compound minispikes or cut rows off your minipins, the minispikes don't have as much bite as minipins so don't tend to grip roll as much

[Belsten]

I would also run blue springs on the front

[Gayo]

Try some droop limiters on the rear shocks (washers under the piston) to limit downtravel and weight transfert.

[Belsten]

and no 2 pistons in the front

[Southwell]

Way too soft on the front, go silver or blue. Then start cutting rows off the tires.

[Nick Goodall]

Definitely too soft - Is there any bumpy sections? If not i would go stiff all round, 40wt rear, no1 piston with Silver springs and 45wt Front, no2 piston and blue / silver springs.

Lower the car as much as you can get away with, run a short front link and cut the inner and outer row of the front tyres.

[Welshy40]

Dont forget guys this is a B2 not a B4.

I found 30 wt in the front with black springs (size 1 pistons) and 35 in the rear with green springs (size 1 pistons) , front wishbones under level, and rear ujs under level, 25 degree castor front, batterys full forward and it worked rather well on high grip carpet (even though Craig Harris said it was on the edge) and at the worksop indoor finals. It jumped rather well too. I used Full uncut mini pin yellows all round.

However I understand why your having problems as I love over steer with this so would work best with possibly silver springs all over, maybe as Dave said blues on the front.

[enfieldbanana]

Hey there,

Was wondering if running Schumacher Yello Mini Spikes would help?

Andy

[Rocking Donkey]

Thanks for all the tips and ideas. I stiffened the car up all round going with 35wt oil and silver springs on all corners, and lowered it a bit so that the driveshafts are just below level. I've run the car at the last 2 Newbury Sunday meets and at the last on the car handled a treat. Unfortunately its still a bit rubbish at my normal Friday night club that smaller, tighter with more grippy carpet, but c'est la vie. Now my problem is that the e-clips that hold the bulkhead kingpins in place keep falling off meaning the kingpins slide backward and wishbones snap landing from the jumps. I've just put the last of my wishbone reserve stock on the car and am to scared to run it until I find some replacements!

Ben

[markwilliamson2001]

Simple Answer:

See if you can get hold of a 2nd hand B4... Should be a few about what with the recession and all. Loads of setups for it, and a few of the parts will be interchangeable from the B2.

If you like it, you could go ahead with the X6 conversion which seems very popular at the moment.

Alternatively, the Kyosho RB5 seems to be gaining popularity, and Roger Mills will keenly try and talk you into one.

HTH
Mark

[Mike Hudson]

don't think anyone will be buying a kyosho rb5 anytime soon though...! the retail price that was £170 is now £270!!!

[millzy]

Originally Posted by Welshy40

Dont forget guys this is a B2 not a B4.

I found 30 wt in the front with black springs (size 1 pistons) and 35 in the rear with green springs (size 1 pistons) , front wishbones under level, and rear ujs under level, 25 degree castor front, batterys full forward and it worked rather well on high grip carpet (even though Craig Harris said it was on the edge) and at the worksop indoor finals. It jumped rather well too. I used Full uncut mini pin yellows all round.

However I understand why your having problems as I love over steer with this so would work best with possibly silver springs all over, maybe as Dave said blues on the front.

i remeber that set up well james, you and denner ran it all the time
it never worked for me to much steering- Tucker and harris told me to change the blocks
to 3-3 rear blocks ( 3 deg toe in 3 deg anti sqaut ) and 30 front blocks calmed it down a lot. with silver front green rears as blues where not aroud at the time

[Welshy40]

Originally Posted by millzy

i remeber that set up well james, you and denner ran it all the time
it never worked for me to much steering- Tucker and harris told me to change the blocks
to 3-3 rear blocks ( 3 deg toe in 3 deg anti sqaut ) and 30 front blocks calmed it down a lot. with silver front green rears as blues where not aroud at the time

I think Denner had greens front, and possibly silvers rear as he didnt like as much steering as me. But what a memory you have. Great fun back then, pity that its got so much smaller and less people are racing.

[millzy]

i dunno, caldicot and cobra pull big numbers..but yeah its not like the old says

cant comment on denners front spring, i was running stock back then and you guys where runnig mod .. i might ring him and see if the remembers

i know he still has his b3 and xx4 sat in the house

[Welshy40]

Bang on. Im gonna be down in the next few months, specifically to find a couple of my mates. But hope to be down for an event for a giggle in 2wd using a B4. Should be fun, even if I come last. Give Jody my regards.