|
||
|
 |
|
||||||||||||||||||
|
#563
25-09-2011
|
||||
|
||||
Quote:
One important note, you need to be an adaptive driver. It's very different to drive than a midmotor, but just as fast if not faster when you adapt to it.
__________________
Martin Sørlie, 1985. Spektrum DX4R Pro - TLR 22 2.0 & TLR 22-4 - Absima Team Smallsize 
|
|
#564
26-09-2011
|
||||
|
||||
|
Quote:
|
|
#565
26-09-2011
|
|||
|
|||
|
Quote:
|
|
#566
26-09-2011
|
||||
|
||||
|
Bump Steer will also be affected by what kick-angle you are running.
I run 25 deg Kick with 5 deg blocks and no washers on the steering arm and have pretty much zero bump steer. But if I use the taper 20 deg kick wedge, then I can get massive bump steer. The other thing that can affect it is the axle height - i.e. what shims you run above and below the c-hub. Try to visualise what is happening to the height of the outer steering ball joint when you either change the caster angle, kick angle or axle height. It is this height change that is causing the bump steer. Once you visualise it, it is easier to figure out what needs to change in order to reduce / remove the bump steer. HTH
|
|
#567
26-09-2011
|
||||
|
||||
|
Quote:
I've read a lot about people asking how to get less bumpsteer, but none with a good reason to why they want less. In theory more bumpsteer will give me less steering midcorner when the car rolls, right? In my head that means I can have an aggressive setup with a lot of reaction, but it will calm down and stabilize mid-corner. Or am I far off :-P ? I've run 2mm shims as per manual all year with 25/5, this gives me quite a significant amount of bumpsteer, doesn't it? *Don't have the car with me to check... :P* I guess the affects of adding and removing shims will be the next on my list to figure out... Just got a new indoor track, 150 tons of clay laid down in a warm, big building. Yay!!
__________________
Martin Sørlie, 1985. Spektrum DX4R Pro - TLR 22 2.0 & TLR 22-4 - Absima Team Smallsize
|
|
#568
26-09-2011
|
||||
|
||||
|
Quote:
My own opinion (for what its worth) is that bumpsteer can be a useful tuning aid but to what extent depends on the track surface. If the surface is smooth then adding bump out can as you say calm the car during corner roll but if your track is bumpy and you find your wheels moving up and down independently of each other (like most UK tracks), then any bump steer can make the car feel more vague along the straights. Old habits die hard - I tend to set my cars up with next to zero bump steer and then leave them - although I can understand the calming nature I've never given it a real go myself. As for your new track with 150 tons of dirt - you lucky sod. Make sure you make good use of it 
|
|
#569
26-09-2011
|
|||
|
|||
|
I am running 5* with 25 kick and I have 1 mm spacer there is not a lot of bump steer now I would run it with no spacers but as a am running with no spacers in the front shox I dont won't the thred rubbing a holl in my front arms .
I was alwas under the inpreshion that bump steer was dad As on ruff trax I run on can make the car do all types of made things on the straight
|
|
#571
28-09-2011
|
|||
|
|||
|
Quote:
Mid corner i dont seem to have enough steering- it is almost like the wheels are not managing full steering lock. Is this because of 'bumpsteer' and if so how do i get rid of it? The issue occurs with any servo i put in the car. So i know it isn't a problem there. The car is standard btw Cheers Adz
|
|
#572
28-09-2011
|
||||
|
||||
|
Adz,
IMO bumpsteer is unlikely to be the cause of your issue. You can check however simply by looking down at the front wheel from above and seeing if it alters from toe-in to toe-out at all during suspension compression. if it does, then you have bump steer - although I still reckon that is unlikely to be highly noticeable on-track. From what you describe, it sounds as if you are not achieving full lock. The 22 can be quite sensitive to overall travel available on your Tx and indeed, I find the low profile servo is more fussy than a normal profile one. I have to set my travel limits on my radio at 150% travel - at 100% they would not achieve full lock. What Tx and what servo are you running? I reckon this issue is more likely to be a lack of overall travel setting on your Tx - but as I said, a low profile servo can exaggerate the problem further.
|
|
#573
28-09-2011
|
||||
|
||||
|
Adam, I think you need to look at your camber link on the front, also, as you seen on Friday night, it can have a massive affect on camber change, which will also affect steering change.
I found the easiest thing to do was run tyres that gave more mid corner.... cut staggers.
__________________
dragon paints : team tekin : fusion hobbies :SCHUMACHER RACING : Nuclear R/C for all my sticky and slippery stuff - if it needs gluing or lubing, Nuclear RC is the man!
|
|
#574
29-09-2011
|
|||
|
|||
|
Hi Gnarly,
I think you might be on to something. Increased the steering rate to max (120%) and it seems to improve the turning circle. But that was only in the kitchen! I will give it try at the next club meeting and see how it goes. Cheers for the heads up! It may also be partly a steering link issue- I will try a few things if this fix doesn't improve it enough. Cheers Adz
|
|
#575
29-09-2011
|
||||
|
||||
|
Anyone there anyone at EOS - Tomelilla (sweden) and have a good set up for
the losi on a slippery hard packed clay track?
|
|
#577
03-10-2011
|
|||
|
|||
|
Was running my car on the weekend and it was grate apart from I need more steering and when ever I hit a jump it goes into a massive nose dive is there any way of sorting this out was running on carpet with mini pins on rear and mini spikes on the front
|
|
#578
03-10-2011
|
|||
|
|||
|
Quote:
__________________
--
|
 |
|
|
Team Losi Racing
Linear Mode
