defcone

iTrader: (15)

What did 6 deg. caster blocks do?

Csaari77

iTrader: (35)

I just got a new TP 820cd and I'm having issues getting it to charge a 1s lipo. It keeps giving me a "check battery connection" error. I've tried multiple batteries and connections and it gives the same error every time. It has the latest firmware already. Any suggestions?

ThunderPowerRC

It is most likely looking for a connection through the balance port. Turn the balance off under settings mode. You can also make a balance wire that connects to your charge leads. This will give you a more accurate charge.

Csaari77

iTrader: (35)

That did it. Thanks!

Paul L

Hi. Ill take the squeal anyday. some set ups will squeal more and it also has a lot to do with tire prep. i would bet money that with brand new tires your car would not squeal on carpet, then after some normal wear and your saucing routene they will start to squeal. as long as the car is handling well i wouldnt worry about it at all. normally i am faster when my tires squeal.

Thanks



If the car is getting loose only at the end of the run i would pick one of many set up changes that will make the car push a bit more, then i would sauce the front tires more aggressive (either sauce more of the front tire or if already full front, sauce the fronts longer). in making a set up change for less steering then saucing more front tire you should get about the same handling that you like now at the begining of the run, but then at the end of the run when it would normally get loose you should retain the stability with the set up change.
Possible set up changes: less front camber, more rear camber, more rear toe, move weight forward. also shorter front wheelbase, but compinsate with steering links for the ackermann change. example: 1mm shorter front wheelbase, take out 1mm shims from your steering bell crank.

Good luck!


Thanks for the help1

In a nut shell, it gives more steering. the disadvantage is that the car will have less forward traction and stability coming out of the corner.

DesertRat

iTrader: (2)

Paul, do you use a lot of drag brake in mod 1/12 scale to slow the car for the corners or is it more in the chassis setup and tire choice?

Paul L

Hi. Currently I do not run drag brake, but honestly with as fast as the cars keep going it may become or already be nessissary.
As you said tire choice is key for me on this subject now, normally i will use a soft front tire, this way you can kinda charge a corner and slow the car down with the soft front rubber. i dont know how to explain it well but i feel like a soft front tire is less edgy to begin with, this allows me to use more wheel throw entering a corner to help slow it down, you can almost slide the front end in and slow it down that way. At least I was successfull with this method last year at the birds, but for sure the bar is always being raised (Kevin hebert especially) so i dont know how effective this method will be moving forward. if you ask Kevin, you can copy and paist his answer here

jlfx car audio

iTrader: (37)

Paul as always tks for answering my questions .
I have yet another , let me set the stage.... traction is coming up thru out the day ...
Theirs a small bump 15' from the sweeper.
As I let off the throttle to turn into sweeper (gently ) rear end comes around ( ur Cleveland set up)but not every time . If I stay inthrottle it holds but being lane is only 6' wide and sweeper isnt ideally curved ..... I'm not wanting to risk the high speed wreck...
I moved the rear inner to mid role center and removed .5camber (now at -1.5) if I come out of throttle any little bit car wants to lift and traction role if I stay in it it works great .
What other things could I have done to either keep it from TRing or being so loose ? Is it the bump upsetting the car ? I know just staying in it would be the fastest as Jim persol and skip darsky and the other oil pros did but its not worth the risk for me . I would rather be .2 slower and be consistent vs be fast on 28 laps and wreck the other 5... sorry to drag the question out . Tks

Paul L

HI Justin. no problem.
First off I wouldnt worry much about the bump, anytime i start tuening a car for a bump it ends badly. I think that lowering the rear roll center was likely the right move, I think where you went wrong was taking static camber out of the rear, I would go back to 2deg or even 2.5deg of rear camber. secondly i would move your rear wing back on the body, this will plant the rear end at high speeds and also reduce traction roll signifigantly threw the sweeper, even 2mms will make a difference. On top of that i would try a thinner front bar, 1.3 from a 1.4mm bar will make the car more predictible do to the suspension travel not running in to the sway bar as much, especially with this set up BC the front does roll a lot. I dont have a 1.3mm front bar for the T4 yet but it might be availible.

That stuff should really help.

Thanks

AdrianM

iTrader: (4)

Ask and ye shall receive...



If he is being honest (and I think he is) that's the whole shebang. Boost, punch, brakes, dragbrake...everything.

jlfx car audio

iTrader: (37)

Kool tks so if I grasp the concept of allowing the front to role more wile off power it will keep it from traction rolling?
Never thought of the rear wing location ...
With the added role in the front with thinner sway bar would it drag more in the fast corners ?
Just trying to understand the changes so I can apply more confidently in various situations .
Since again thanks paul

DesertRat

iTrader: (2)

Thanks Paul, I will break out the Soft fronts (Gravity, of course, for some reason I have a hard time chunking them...) and see if I can get it to work.

Paul L

Thanks. Nothing like a little snooping, lol.

In general I do not think that the front rolling more will neccissarily cause less traction roll. I think traction roll is almost always caused by the suspension recieving a instant amount of load or change (load or inconsistencys from the suspension transfered quickly to the track threw the tire can cause traction roll). A front sway bar dose not really do anything untill the car rolls a certain amount, then it acts quickly. So the stiffer the sway bar the more abrupt that transition is, from not doing much to doing a lot. So in this case I think the soft front bar will traction roll less, or atleast it normally does.

I hope that is a little more clear.

Cool, Thanks

Leester

iTrader: (23)

Paul, you have a PM.

Lee

samnelso

iTrader: (1)

Good stuff Paul. Thanks for this.