R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 04-25-2010, 06:42 AM   #1
Tech Adept
 
Join Date: Jan 2010
Posts: 147
Questions?? Increasing mechanical grip

I want to know how if the following would increase grip on a low grip track:

1. Soften Springs
2. Soften Oil
3. Lower roll centre
4. lating shocks down
5. more droop (lower number)
6. moving the motor further in-board

I am trying to increase on power steering - not whilst I am accelerating out, but when the throttle remains neutral - therefore not much front/rear weightshift, more right to left so to speak.

If truth be told the car is about 80% there it's now down to my own personal fine tuning.

I use an MI4 LP, and the track I am talking about is West London.
Lohan is offline   Reply With Quote
Old 04-25-2010, 06:57 PM   #2
Tech Adept
 
KevinHawk's Avatar
 
Join Date: Jul 2006
Posts: 221
Trader Rating: 9 (100%+)
Default

I have good luck playing with caster blocks. not sure what the mi4 comes with but try a higher number (more inclined) this will give more steering on power and without weight transfer. Also I like to fine tune ackerman when the car is pretty much on. If you get your ackerman right the car is so much easier to drive and can really increase corner speed.
KevinHawk is offline   Reply With Quote
Old 04-25-2010, 07:05 PM   #3
Tech Adept
 
KevinHawk's Avatar
 
Join Date: Jul 2006
Posts: 221
Trader Rating: 9 (100%+)
Default

oh yeah, don't forget camber link positions. You can lengthen them or raise them on the inner mounting position that should give you more bite.

Also don't forget that a given track only has so much grip, so it may be necessary to to take grip away from the rear to balance the car. You could try taking rear toe out of the car, shortening camber links, stiffer spring, less camber, etc. remember it's all about balance.
KevinHawk is offline   Reply With Quote
Old 04-26-2010, 06:38 AM   #4
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,762
Default

Quote:
Originally Posted by Lohan View Post
I want to know how if the following would increase grip on a low grip track:

1. Soften Springs
2. Soften Oil
3. Lower roll centre
4. lating shocks down
5. more droop (lower number)
6. moving the motor further in-board

I am trying to increase on power steering - not whilst I am accelerating out, but when the throttle remains neutral - therefore not much front/rear weightshift, more right to left so to speak.

If truth be told the car is about 80% there it's now down to my own personal fine tuning.

I use an MI4 LP, and the track I am talking about is West London.

Lohan, speak to Ashley Wiffen, at WLRC his Mi4 sticks like shit to a blanket
__________________
Xray T4'18, T4'14 (Wet Car)
Xray X12 2018
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RCDisco.co.uk
Skiddins is offline   Reply With Quote
Old 04-26-2010, 01:43 PM   #5
Tech Adept
 
Join Date: Jan 2010
Posts: 147
Default Hi Skiddins

I have spoken to both Wiffin and Kerswell - both exceptional drivers. That's one thing I can't adjust as quickly as my car

Joking aside I have followed the kit/grainger set up. I was partly posting to see if my suggested adjustments make sense, and secondly what other adjustments are worth exploring.

Anyway - keep the recommendations coming - they will be appreciated
Lohan is offline   Reply With Quote
Old 04-26-2010, 01:58 PM   #6
Tech Elite
 
razzor's Avatar
 
Join Date: Aug 2005
Location: Durban, South Africa
Posts: 2,810
Default

Quote:
Originally Posted by Lohan View Post
I have spoken to both Wiffin and Kerswell - both exceptional drivers. That's one thing I can't adjust as quickly as my car

Joking aside I have followed the kit/grainger set up. I was partly posting to see if my suggested adjustments make sense, and secondly what other adjustments are worth exploring.

Anyway - keep the recommendations coming - they will be appreciated
download http://www.teamxray.com/teamxray/sho...p?file_id=6143
It has everything you need to know.
__________________
Casterracing ZX1.5R
casterracing EX-1 Pro, SP Silver Arrow
TOP Racing Scythe, SP 17.5, SP GT Pro 2.0
TOP Racing Scythe, SP 4.5 V2, Hobbywing Xerun 120SD 2.0
TOP Racing Scythe, SP 13.5, Hobbywing Xerun 120SD 2.0
razzor is offline   Reply With Quote
Old 04-26-2010, 04:43 PM   #7
Tech Elite
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,865
Default

Quote:
Originally Posted by Lohan View Post
I want to know how if the following would increase grip on a low grip track:

1. Soften Springs
2. Soften Oil
3. Lower roll centre
4. lating shocks down
5. more droop (lower number)
6. moving the motor further in-board

I am trying to increase on power steering - not whilst I am accelerating out, but when the throttle remains neutral - therefore not much front/rear weightshift, more right to left so to speak.

If truth be told the car is about 80% there it's now down to my own personal fine tuning.

I use an MI4 LP, and the track I am talking about is West London.
What you are describing is not on-power handling - it's neutral power handling.

Four of the things you have mentioned will fundamentally increase mechanical grip. One of them (damping) is more about the reaction of the car to inputs, but will also have the effect of increasing grip too. Moving the motor more inboard (whilst retaining L/R balance) is just plain better.

If you are looking for more grip mid corner, the softer settings are the way to go, although too soft can make the car roll too much and you compromise the contact patch of the tyre. I would normally change the front of the car first to affect the mid-corner/neutral power handling.

If what you are looking for is more response in left/right transitions, go harder. Response is different to grip, but the faster weight transfer from the stiffer settings feels like more grip initially.
sosidge is offline   Reply With Quote
Old 04-27-2010, 04:06 PM   #8
Tech Adept
 
Join Date: Jan 2010
Posts: 147
Thumbs up Thanks

I appreciate the advice - especially sosidge -

I think at times my own understanding of terminology fails me - ie - on power vs neutral power

Thanks for the XRAY suggestion - thing is that I already have that - if I recall rightly the earlier one for the old t1R was a lot better than the current manual - thanks none the less - much appreciated.

I am racing either colchester or aldershot ath the weekend, and am gonna systematically go through a series of mods as follows:

1. change the shell to a titan mazda (not got a protoform at the moment)
2. try an LTC - R shell (if painted)
3. use tyre warmers
4. change front springs to a tad softer
5. lay front shocks down a bit
6. increase droop front and rear by 1/2 mm so it's 4front and 3 rear

I think I'll do all changes with warmed tyres, and see where it goes
Lohan is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tamiya TRF415 JDM_DOHC_SiR Electric On-Road 21094 03-10-2016 12:02 PM
New XRAY 808 Philipm Nitro Off-Road 12372 12-08-2015 07:43 AM
Schumacher Corner meche Electric On-Road 27727 07-20-2015 08:38 PM
Mechanical grip rc_square24 Electric On-Road 7 01-30-2004 10:02 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 02:40 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net