R/C Tech Forums

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

Like Tree5Likes
Reply
 
Thread Tools Search this Thread
Old 07-11-2013, 02:55 PM   #4516
Tech Adept
 
Join Date: Aug 2012
Posts: 133
Default witness marks

Quote:
Originally Posted by hacker07 View Post
Hey guys, well, we said we would keep working on it some and boy have we figured some stuff out. You will have plenty of traction and plenty of steering with this one or at least should. A couple things, its hard to find space on the sheet to place more notes. This setup fixes the poor bump in condition the truck has, that is why you can run toe in and it doesn't do weird things.

-you will see witness marks on the front of the arms where the wheel turns in further now and on the steering links. Just dremel those until you get no new witness marks, doesn't take much.
-You want to use metal washers under the outer steering link balls for the additional 2mm of shimming.
Hey Ryan, What are you referring to when you say "you will see witness marks on the front of the arms" where exactly are you dremeling?
Thanks
crazyhog is offline   Reply With Quote
Old 07-11-2013, 03:02 PM   #4517
Tech Prophet
 
Casper's Avatar
 
Join Date: Aug 2004
Location: Orange, Ca
Posts: 17,764
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by crazyhog View Post
Hey Ryan, What are you referring to when you say "you will see witness marks on the front of the arms" where exactly are you dremeling?
Thanks
The plastic rod end will hit the rim with raising the link on the spindle. A little dremel on the plastic rod end were it rubs gives some clearance.
__________________
TLR/Losi Team Driver
TLR/Losi | Tekin | DE Racing | Spektrum | Exotek | JBRL | Kolor Koncepts | OC/RC |Sticky Kicks | Imagine It Graphics | Casper-RC.com
TLR 22 4.0 SR, TLR 22T 4.0, TLR 22-4 2.0, Spektrum DX6R

WWW.CASPER-RC.COM TLR and Tekin setups
Casper is offline   Reply With Quote
Old 07-11-2013, 04:07 PM   #4518
Tech Adept
 
Join Date: Aug 2012
Posts: 133
Default

Quote:
Originally Posted by Casper View Post
The plastic rod end will hit the rim with raising the link on the spindle. A little dremel on the plastic rod end were it rubs gives some clearance.
Thanks Casper
crazyhog is offline   Reply With Quote
Old 07-11-2013, 04:26 PM   #4519
Tech Elite
 
Join Date: May 2006
Posts: 3,529
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by Purdue Engineer View Post
Ryan,
I see casper is running those same ESC numbers for timing with the 4600. is that correct that I could run those same numbers with my 4600?

What difference will I see in performance with running the timing at 35 and changing the start and end curve to those RPM numbers?

Thanks for all your work.
Regarding the PM from a while ago, I'm waiting for my wife to schedule her next trip
On the 4600, I like 14/41 gearing actually. on that motor, casper and I have been playing with starting the timing even lower. Whatever the next option below the 3000 range is. He seemed to like it.

Quote:
Originally Posted by crazyhog View Post
Hey Ryan, What are you referring to when you say "you will see witness marks on the front of the arms" where exactly are you dremeling?
Thanks
A witness mark means that you will see on the front of the arms and on the turnbuckle ends that the wheel is rubbing some. You just want to dremel it a little and run again, keep doing this until you see no witness marks or at least very faint ones.
__________________
-Ryan Dunford
Horizon Hobby Spektrum Product Manager
TLR--Spektrum--Horizon Hobby--Tekin--Venom--Pro-Line--Sticky Kicks--Bradley FLD--ImagineIt Graphics--Casper-RC.com
TLR 22 3.0, TLR 22T 2.0, TLR 22SCT 2.0, TLR TEN-SCTE 2.0, TLR 8ight-E 4.0, DX6R
hacker07 is offline   Reply With Quote
Old 07-11-2013, 06:31 PM   #4520
Tech Initiate
 
Join Date: Dec 2012
Posts: 29
Default

I have a question about something I can't seem to figure out, when my truck turns too much the cvd on the outside wheel will start binding and lockup entirely, is this just going to happen with too much steering and should I turn down my epa's or is there something I'm missing?
Voloc is offline   Reply With Quote
Old 07-11-2013, 07:59 PM   #4521
Tech Champion
 
XXXDad's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2007
Location: West Palm Beach, Florida USA
Posts: 6,009
Trader Rating: 195 (100%+)
Thumbs up Goldin Info

Quote:
Originally Posted by hacker07 View Post
Hey guys, well, we said we would keep working on it some and boy have we figured some stuff out. You will have plenty of traction and plenty of steering with this one or at least should. A couple things, its hard to find space on the sheet to place more notes. This setup fixes the poor bump in condition the truck has, that is why you can run toe in and it doesn't do weird things.

-you will see witness marks on the front of the arms where the wheel turns in further now and on the steering links. Just dremel those until you get no new witness marks, doesn't take much.
-You want to use metal washers under the outer steering link balls for the additional 2mm of shimming.
Quote:
Originally Posted by Casper View Post
Setup works great. You do not need to remove the front droop "pad/screws" with this setup. that is only needed if you run max front kickup. This setup goes back to 0/0 settings and the screws can be left in place. Since we are not using the droop screws it does not matter if they are there or not though so....
Quote:
Originally Posted by hacker07 View Post
Turk, The primary major issue with the steering on the SCTE is that when the tire travels up, it bumps IN, this is a big no no and makes for a vehicle that is inconsistent under braking and under landing. What these changes do (learning from the 8 3.0), help us be able to get the car to land better, steer in and out of a turn, and brake better. Overall, the car is more consistent. The reason we lowered the amount of front kick is to get more turn in, now that we could go to some toe in, to get the steering out of the turn for a more balanced steering and vehicle.
Quote:
Originally Posted by hacker07 View Post
The outer ball always has to be run ball up so this is how we left it but placed an additional 2mm metal washer under it. We used the ones from the 22 line and just held them with pliers as we drove the screw through it, lol.


I am running my motor pretty hard but it is known I apparently don't pull as hard as most as I can run an identical car as others and come off a little cooler, so just putting that out there...lol. Always check temps during your test runs.

I am geared 16/39 with the pro4 hd 4300.
timing - 35
finish - type in 17500
start - of the options, choose the one in the 3000 range

current limit - 75 (I played with this a lot, more than 75 with this motor produces wheel spin and lower lap times)

brakes - 100 in esc, 37 on radio

minimum throttle - 1

I think those are the important ones...
Quote:
Originally Posted by Casper View Post
DISCLAIMER!!!!!
Using advance timing with 4 pole motors is harder on your batteries. AMP draw has gone up and the batteries are getting warmer. Make sure you have good batteries if you attempt to add timing to your 4 pole motors.

We are getting better top end out of the motors with additonal timing. We are ramping it with a pretty low start so you don't feel any kick in and have it ramp fairly quick so you get some benefit on short shoots as well. Gen 2 Data logging is showing these things are pulling over 30,000 RPM so you see full advance timing for most of the top end of the motor range.
Quote:
Originally Posted by Casper View Post
The plastic rod end will hit the rim with raising the link on the spindle. A little dremel on the plastic rod end were it rubs gives some clearance.
Quote:
Originally Posted by hacker07 View Post
On the 4600, I like 14/41 gearing actually. on that motor, casper and I have been playing with starting the timing even lower. Whatever the next option below the 3000 range is. He seemed to like it.



A witness mark means that you will see on the front of the arms and on the turnbuckle ends that the wheel is rubbing some. You just want to dremel it a little and run again, keep doing this until you see no witness marks or at least very faint ones.

Thanks guys Great info here!!!
__________________
☆ Glenn Carlson ☆☆ WPB, Florida☆

☆TLR 22B 3.0 MM ☆ 22T 2.0 MM ☆22B 2.0 MM ☆22-4 ☆ SCTE 2.0☆ ☆
XXXDad is offline   Reply With Quote
Old 07-11-2013, 09:46 PM   #4522
Tech Prophet
 
Casper's Avatar
 
Join Date: Aug 2004
Location: Orange, Ca
Posts: 17,764
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Voloc View Post
I have a question about something I can't seem to figure out, when my truck turns too much the cvd on the outside wheel will start binding and lockup entirely, is this just going to happen with too much steering and should I turn down my epa's or is there something I'm missing?

Something is wrong. That should not happen even at full throw. Take the axles out and make sure everything is ok. The pin hole is not too worn or the pin is not worn etc. Make sure the CV joint is clean and lubricated.
__________________
TLR/Losi Team Driver
TLR/Losi | Tekin | DE Racing | Spektrum | Exotek | JBRL | Kolor Koncepts | OC/RC |Sticky Kicks | Imagine It Graphics | Casper-RC.com
TLR 22 4.0 SR, TLR 22T 4.0, TLR 22-4 2.0, Spektrum DX6R

WWW.CASPER-RC.COM TLR and Tekin setups
Casper is offline   Reply With Quote
Old 07-11-2013, 09:54 PM   #4523
Tech Prophet
 
Casper's Avatar
 
Join Date: Aug 2004
Location: Orange, Ca
Posts: 17,764
Trader Rating: 34 (100%+)
Default

Posted the latest setup in .pdf for easier reading on my web site.

www.casper-rc.com

Direct link.
New Setup
__________________
TLR/Losi Team Driver
TLR/Losi | Tekin | DE Racing | Spektrum | Exotek | JBRL | Kolor Koncepts | OC/RC |Sticky Kicks | Imagine It Graphics | Casper-RC.com
TLR 22 4.0 SR, TLR 22T 4.0, TLR 22-4 2.0, Spektrum DX6R

WWW.CASPER-RC.COM TLR and Tekin setups
Casper is offline   Reply With Quote
Old 07-11-2013, 10:40 PM   #4524
Tech Adept
 
Join Date: May 2013
Posts: 160
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Casper View Post
Posted the latest setup in .pdf for easier reading on my web site.

www.casper-rc.com

Direct link.
New Setup
Can't thank you enough for sharing what you learn.
I have only had my 2.0 SCTE for less than a month, and sharing what you have learned has allowed me to 'tune' my car (aka, copy your setup) and really appreciate driving these trucks.
Thanks so much, and can't say it enough.
rob4448585 is offline   Reply With Quote
Old 07-12-2013, 01:57 AM   #4525
Tech Adept
 
Join Date: Nov 2010
Posts: 165
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Casper View Post
It comes two wasy. One precut with all the vents the other without the vents cutout (stock)

http://www.tlracing.com/Search/Defau...rm=performance

Are these the same original thin lexan bodies or have they been updated with the thicker lexan yet?
Jedev is offline   Reply With Quote
Old 07-12-2013, 05:29 AM   #4526
Tech Adept
 
Join Date: Jul 2012
Posts: 195
Trader Rating: 10 (100%+)
Default

Quote:
Originally Posted by Casper View Post
Posted the latest setup in .pdf for easier reading on my web site.

www.casper-rc.com

Direct link.
New Setup
Is there supposed to be a 2mm washer under the inside and the outside ball? The bumpsteer column is cut short and I'm not sure.
anr211 is offline   Reply With Quote
Old 07-12-2013, 06:30 AM   #4527
Tech Regular
 
MonsterSummit's Avatar
 
Join Date: Nov 2011
Location: Columbus, OH
Posts: 260
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by anr211 View Post
Is there supposed to be a 2mm washer under the inside and the outside ball? The bumpsteer column is cut short and I'm not sure.
Yes. You put the flange side down on the outside ball then add a 2mm washer. Had a different, but similar question earlier myself.
MonsterSummit is offline   Reply With Quote
Old 07-12-2013, 08:54 AM   #4528
Tech Initiate
 
Join Date: Aug 2011
Posts: 35
Trader Rating: 1 (100%+)
Thumbs up

Quote:
Originally Posted by anr211 View Post
Is there supposed to be a 2mm washer under the inside and the outside ball? The bumpsteer column is cut short and I'm not sure.
Put a 2mm washer under the outside ball ONLY
Rich D is offline   Reply With Quote
Old 07-12-2013, 08:56 AM   #4529
Tech Elite
 
Join Date: May 2006
Posts: 3,529
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by Jedev View Post
Are these the same original thin lexan bodies or have they been updated with the thicker lexan yet?
The bodies you can purchase are now the thicker bodies.

Quote:
Originally Posted by anr211 View Post
Is there supposed to be a 2mm washer under the inside and the outside ball? The bumpsteer column is cut short and I'm not sure.
it is just under the outside ball as the inside ball is captured between two plastic flanges and cannot be spaced other than flipping the ball whichever way.
__________________
-Ryan Dunford
Horizon Hobby Spektrum Product Manager
TLR--Spektrum--Horizon Hobby--Tekin--Venom--Pro-Line--Sticky Kicks--Bradley FLD--ImagineIt Graphics--Casper-RC.com
TLR 22 3.0, TLR 22T 2.0, TLR 22SCT 2.0, TLR TEN-SCTE 2.0, TLR 8ight-E 4.0, DX6R
hacker07 is offline   Reply With Quote
Old 07-12-2013, 09:11 AM   #4530
Tech Addict
 
mxgregg's Avatar
 
Join Date: Apr 2012
Location: Nor-Cal
Posts: 610
Trader Rating: 32 (100%+)
Default

So lowering the inside steering link and raising the outside gives less bump steer?
__________________
CRG Road Rebel stock moto 125
Birel Q31 Briggs LO 206
mxgregg is offline   Reply With Quote
Reply



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 03:43 AM.


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