S400 - BRCA Nationals Rnd 1 - Aldershot

[jo90]

This is the Team SerpentUK setup for 10.5/19t. The guys dominated taking 1,2,3 !!

[scoyle]

Don't know if this is the place but can I ask a few questions about the sheet;

Kit has the front blocks as 3.0/1.0 and the guys had it set to 1.5/0.0 - what does this do?

I have been running 0.6mm spacers under the front blocks and 1.0mm under th e rear based on previous discussions... what does putting the additional 1mm to make it 1.6mm and 2.0mm front/rear do?

Finally - how open a track is Aldershot?

[timmay langdell]

running 1.5 and 0.0 we found will will give you more initail steering and the lower roll centers will allow the car to roll more and we found it made the car change direction better and was easyer to drive...:)

[scoyle]

Thanks for that timmay... hope you don't mind a few more questions;

Can I ask what Aldershot is like as a track as I have never been there and was wondering how it compares to my club track. Is the surface smooth/rough (noticed the ride height is quite high at 6mm) and would you describe it as an open/tight/mix of a track.

And final question... honest... what does running the steering linkage connected to the rear hole on the steering block do?

[Chris Lovely]

Hi guys, firstly congrahtulations to the team, and to the top 3.
Lets hope for more of that to come.
The setup sheet is a great help, so thank you for posting it.
I was wondering, seeing as the guys were in pro stock, were any of you using lipos of cells. Because I have a lipo an orion 3200, and was looking for something with a bigger capacity, I've tried many lipos but they are all too big.
I've already grinded out some of the chassis to get this lipo in, anyone have any ideas to what I can do, or what lipos will fit

thanks
Chris
:cool:

[Mark Sadler]

We all ran nimh cells. I have seen on some serpents that guys with lipos take a dremmel to the underneath of the layshaft mount and grind off the cell bulges to make it flat. This way you can slot the lipo in. Alternatively i am sure Mark Christopher put something in an earlier thread about fitting lipos.

As for the holes on the knuckles my limited knowledge tells me that by moving them forward makes the steering more aggressive and moving it back calms it down. I'm sure someone will have a better explanation!!

[Mark Sadler]

oh yes i forgot, Aldershot is quite aggressive on tyres, it has a large banked sweeper that falls into a hairpin, it has an "s" bend infront of the rostrom that you need a good line out of ready for the chicane that can make or break a fast lap. There are some bumps on the sweeper that if you run the car too low can cause the back end to kick out when it bottoms out.
A quick lap is sub 14.5 seconds although GW managed a 13.9 which is modified type quick!!
The track pictures are available on the BRCA website or on aldershots website that you can google.

Although the lap times are fast the track is big with a monster straight.

[scoyle]

Started to put this setup on my car this morning and when I put 1.6mm of spacers under the suspension brackets the steering rubbed on top of the front rear suspension bracket... is there something I could have done wrong?

[GWESTY]

guys i modified my ackermann , move the steering post back 5mm
this will make the steering more progressive , also wont rub on suspension
beam , hth glenn

[scoyle]

guys i modified my ackermann , move the steering post back 5mm
this will make the steering more progressive , also wont rub on suspension
beam , hth glenn

Sorry for being a bit thick about this but how did you move it back 5mm?

[GWESTY]

drill 2 holes ( 1 in chassis countersunk, 1 in top deck ) 5 mm
rearwards

[scoyle]

drill 2 holes ( 1 in chassis countersunk, 1 in top deck ) 5 mm
rearwards

I have done that...but cannot get full lock due to the servo saver (where the track rods attache) hitting the bulkheads. Is there any more surgery required?

[GWESTY]

yeah just trim the bell crank where its fouling,
then shorten the servo arm track rod till its all straight

[scoyle]

yeah just trim the bell crank where its fouling,
then shorten the servo arm track rod till its all straight

Cheers for that - will get the dremel out tomorrow again. Just realised that my other car which isn't moved 5mm back is also hitting the bulkheads so may have a look at it as well although I have never lacked steering!!

[scoyle]

This really does seem to give a lot less steering than the normal settings no matter how much I dremel away?

[Mark Sadler]

You can dremmel a "U" in the servo saver where it rubs against the front bulkhead. Alternatively use a file or sharp knife.

[scoyle]

You can dremmel a "U" in the servo saver where it rubs against the front bulkhead. Alternatively use a file or sharp knife.

Mark, I did that but it is now the turnbuckle that is hitting the bulkheads, not the servo saver - did you guys move to the front holes in the servo saver?

[timmay langdell]

yeah :)

[scoyle]

yeah :)

Now it all makes sense!!

Inside or outside holes?

[timmay langdell]

i tryed both out side should make the steering more responsive but i didnt notice the differance so i would leave it on the inner holes and back on the steering hub

[scoyle]

I have moved it back 5mm to allow the steeringto move without hitting the suspension toe blocks, demeled the servo horn to give me the full steering throw and put the turnbuckles to the front inside holes... its my spare car which is now built to the Aldershot setup (will keep my other car as per last run at our track).

I am interested to see what the differences are.

[stueyR]

does this car stuggle for steering

[l-u-k-e]

does this car stuggle for steering


No its just some of the adjustments made, stop something working correctly. The car has loads of front grip!:D

[GWESTY]

no it a mod as the car has loads of initial steering ,
but then it fades ! ( worse on high grip tracs)

[l-u-k-e]

Does this mean the older the car gets the less steering you have?

[stueyR]

no it a mod as the car has loads of initial steering ,
but then it fades ! ( worse on high grip tracs)

so what your saying glenn is the car struggles with corner speed.

[Mark Sadler]

Does this mean the older the car gets the less steering you have?

No Luke, what Glenn means is as the car goes into the bend with all the intentions of holding the line, it then starts to fade and wash out.

It's not that as the car gets older it knackers itself out and won't steer!!