R/C Tech Forums

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

Like Tree27Likes
Reply
 
Thread Tools Search this Thread
Old 05-09-2014, 08:11 AM   #14446
Tech Master
 
Dino_D's Avatar
 
Join Date: Aug 2004
Location: Markham
Posts: 1,115
Default

Quote:
Originally Posted by RC10Nick View Post
What do you guys like to use for diff balls? I'm approaching a diff rebuild and thinking of picking up something harder than the stock steel balls. Ideally I'd like a ball hard enough that all the wear occurs on the rings. That way all I have to do for a rebuild is sand smooth the rings and reuse the balls.
Bfast balls, Protek 3mm Ceramics or Hotbodies 3mm Cermamic. They come in a a package of 12 but you need 14 of them.

I run the tresey ceramic balls and so far they have lasted a whole year and going.
__________________
* Team Great Hobbies * Team Powers * Exotek *
http://www.sidsraceway.com
Dino_D is offline   Reply With Quote
Old 05-09-2014, 08:15 AM   #14447
Tech Master
 
Dino_D's Avatar
 
Join Date: Aug 2004
Location: Markham
Posts: 1,115
Default

Quote:
Originally Posted by Devin View Post
Just bought a used roller and switched it to RM4 for use on a loose track. The anti-squat in the rear is at the max angle. What would be a good starting point for this on a large, high-speed not very technical outdoor dirt track?

Realized I have no idea what anti-squat does and it was used for indoor clay previously so it may be set-up totally wrong for me.
Generally the more anti-sqaut you have the more on-power traction you have out of the corner, but you also have less traction off power entering the corner.
I find antisquat helps to rotate your car around a corner when grip is decent.

However on low grip you probably want to run anywhere from 0 to 1.5 anti-sqaut to give you more grip on entry or side grip.
__________________
* Team Great Hobbies * Team Powers * Exotek *
http://www.sidsraceway.com
Dino_D is offline   Reply With Quote
Old 05-09-2014, 11:16 PM   #14448
Tech Regular
 
Azagar's Avatar
 
Join Date: Aug 2011
Location: The Bay Area
Posts: 293
Trader Rating: 7 (100%+)
Default 12mm Hex Mod Wheel Offsets

Thought I'd share my findings with my recent attempts to convert my car to 12mm hex for the front and rear. I decided I would measure the offsets of the stock rims and compare them to B4/RB6 rims I planned to use instead as to make sure they matched.

Rims I tested were:
JCO3347 vs TDR510020
JCO3348 vs TDR510015

Offsets for the front:
JCO3347 11.5mm
TDR510020 13.5mm (These wheels are not perfectly flat, they have a 1mm bulge around the circular area of the wheel, which actually gives an offset of 14.5mm. Subtract 1mm to get correct offset.)

2mm difference

The stock axle plus one bearing is 5.5mm, rims sits in the center of both bearings so that side calculates the depth needed for the offset. The only axle long enough to accommodate 7.5mm is the Kyosho one. The actual hex measure 2.5mm so you need 5mm of spacers in between the carrier and hex in order for the offset to match.

Offset for the rear:
JCO3348 15mm
TDR510015 18mm (Same thing with the bulge, had to subtract 1mm from 19mm for correct offset)

3mm difference

For the rear, all of the B4.2 hexes I found measured 6.8mm. The stock 14mm hex measures 4.7mm, but I always shim it .1 or .2mm in order to keep the pin from falling out so easily so lets assume 4.8mm to keep things simple. This means just add one 1mm spacer of some kind to the rear before placing the hex and the offset will match correctly.

Let me know if i'm over thinking this or wrong on how I went about this, to be honest I'm not even sure I fully comprehend this. Ultimately I may just end up sticking with the stock durango wheels, the front wheels are just so much more smoother and free with bearing fronts.
__________________
Team Durango DEX210
Avid | AKA | Exotek | Jconcepts | KO Propo | Lunsford | Tekin | Turnigy Nano-tech
Azagar is offline   Reply With Quote
Old 05-10-2014, 03:10 AM   #14449
Tech Adept
 
Join Date: Jan 2004
Posts: 144
Default

Sorry if this has been asked before but is there much difference between the dex210 and the dex210v2 on the track?

Thanks
Bryan D is offline   Reply With Quote
Old 05-10-2014, 08:41 PM   #14450
Tech Elite
 
303slowdown's Avatar
 
Join Date: Sep 2008
Location: Rapid City SD.
Posts: 2,299
Trader Rating: 24 (100%+)
Default

Would someone be able to help me with a starting point for gearing for a 13.5 boosted in mm4 . Thanks in advance.
__________________
Ryan Borgheiinck
303slowdown is offline   Reply With Quote
Old 05-10-2014, 09:57 PM   #14451
Tech Elite
 
rcjunky1's Avatar
 
Join Date: May 2008
Location: Ottawa, Canada
Posts: 2,185
Trader Rating: 10 (100%+)
Default

boosted is tough, it depends on how much boost. I've had 13.5's geared the same as an 8.5, but I'd probably start at 23/81 to be a bit conservative and go from there
__________________
Official distributor of Dan-O-Mite Custom Parts- Durango 210 RF pivot blocks
Andrew Butters' Burghgraef
Team Durango Canada
Great Hobbies, Hobbico, Skyrc, Exotek
rcjunky1 is offline   Reply With Quote
Old 05-11-2014, 05:27 AM   #14452
Tech Fanatic
 
snowman_evil's Avatar
 
Join Date: Sep 2009
Location: Gold Coast, Queenland
Posts: 919
Trader Rating: 30 (100%+)
Send a message via MSN to snowman_evil
Default

Does anyone know the standard caster of the Rtr version?
__________________
DEX410V3 - Tekin - Spektrum - Panther
GCRC Raceway - "Lightning"
snowman_evil is offline   Reply With Quote
Old 05-11-2014, 05:28 AM   #14453
Tech Elite
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,405
Trader Rating: 39 (100%+)
Default

Quote:
Originally Posted by Azagar View Post
Thought I'd share my findings with my recent attempts to convert my car to 12mm hex for the front and rear. I decided I would measure the offsets of the stock rims and compare them to B4/RB6 rims I planned to use instead as to make sure they matched.

Rims I tested were:
JCO3347 vs TDR510020
JCO3348 vs TDR510015

Offsets for the front:
JCO3347 11.5mm
TDR510020 13.5mm (These wheels are not perfectly flat, they have a 1mm bulge around the circular area of the wheel, which actually gives an offset of 14.5mm. Subtract 1mm to get correct offset.)

2mm difference

The stock axle plus one bearing is 5.5mm, rims sits in the center of both bearings so that side calculates the depth needed for the offset. The only axle long enough to accommodate 7.5mm is the Kyosho one. The actual hex measure 2.5mm so you need 5mm of spacers in between the carrier and hex in order for the offset to match.

Offset for the rear:
JCO3348 15mm
TDR510015 18mm (Same thing with the bulge, had to subtract 1mm from 19mm for correct offset)

3mm difference

For the rear, all of the B4.2 hexes I found measured 6.8mm. The stock 14mm hex measures 4.7mm, but I always shim it .1 or .2mm in order to keep the pin from falling out so easily so lets assume 4.8mm to keep things simple. This means just add one 1mm spacer of some kind to the rear before placing the hex and the offset will match correctly.

Let me know if i'm over thinking this or wrong on how I went about this, to be honest I'm not even sure I fully comprehend this. Ultimately I may just end up sticking with the stock durango wheels, the front wheels are just so much more smoother and free with bearing fronts.
Just use a losi XXX sct drive hex for use with the K car rims. within a MM of perfect on track width.
__________________
*Vandal 4wd Late model*XXX-T sprinter*Micro scale specialties 1/24 'rock monster' crawler*MSS Micro-Rail*MSS Micro-Funny*MSS Micro-Outlaw*
2wdMod is offline   Reply With Quote
Old 05-11-2014, 11:30 AM   #14454
Tech Legend
 
Cain's Avatar
 
Join Date: May 2002
Location: West Fargo, North Dakota
Posts: 29,053
Trader Rating: 235 (100%+)
Default

question, I am rebuilding the shocks here, and one set has what looks like the older style piston setup with multiple holes, and the other has alike a 3 hole setup that from the setup sheet I am going off of is what I want to use.

The problem is that looking at the 3 hole pistons, i can't tell if they are 1.6's or 1.7s as there are no markings I can see on the pistons. Anyone got a way to tell that I am missing short of using some calipers?
__________________
Member - Red River Radio/Control Car Club
< Tekno SCT410.3 x 2 |HB Racing D413 x 2 | Tekno EB48SL | Yokomo YZ-2 DTM x 2>
Cain is offline   Reply With Quote
Old 05-11-2014, 05:34 PM   #14455
Tech Addict
 
Devin's Avatar
 
Join Date: Jul 2012
Location: Sudbury, ON, Canada
Posts: 650
Default

Quote:
Originally Posted by Cain View Post
question, I am rebuilding the shocks here, and one set has what looks like the older style piston setup with multiple holes, and the other has alike a 3 hole setup that from the setup sheet I am going off of is what I want to use.

The problem is that looking at the 3 hole pistons, i can't tell if they are 1.6's or 1.7s as there are no markings I can see on the pistons. Anyone got a way to tell that I am missing short of using some calipers?
Do you have a really good drill bit set with tons of pieces? Take a drill bit and set it in the piston holes until you find one that fits. Then use those calipers on the drill bit.
Devin is offline   Reply With Quote
Old 05-11-2014, 05:40 PM   #14456
Tech Legend
 
Cain's Avatar
 
Join Date: May 2002
Location: West Fargo, North Dakota
Posts: 29,053
Trader Rating: 235 (100%+)
Default

Quote:
Originally Posted by Devin View Post
Do you have a really good drill bit set with tons of pieces? Take a drill bit and set it in the piston holes until you find one that fits. Then use those calipers on the drill bit.
found the issue, I think the guy used some piston blanks to the make the ones that were in one set of shocks.

I went ahead and went through the spares and found a bunch of blanks, and some weird small diameter pistons, and then the older style ones that had writing on them.

So I went ahead and used the bit set I have that I got off of amain (handle is junk, bits are good though) and made what I needed.

got the cars basically assembled now, just need to mount electronics. Even got my avid spur gears mounted up too.
__________________
Member - Red River Radio/Control Car Club
< Tekno SCT410.3 x 2 |HB Racing D413 x 2 | Tekno EB48SL | Yokomo YZ-2 DTM x 2>
Cain is offline   Reply With Quote
Old 05-12-2014, 12:24 AM   #14457
Tech Adept
 
Join Date: Mar 2013
Location: Europe
Posts: 86
Default

Quote:
Originally Posted by snowman_evil View Post
Does anyone know the standard caster of the Rtr version?
30 degree (25+5)
goszu is offline   Reply With Quote
Old 05-13-2014, 03:52 AM   #14458
Tech Champion
 
Join Date: Sep 2002
Location: Stokes, NC
Posts: 6,501
Trader Rating: 74 (100%+)
Default Finally a pic..

Double.. sorry
__________________
Team and Sales Manager for USRC Imports, home of Sworkz! Looking for drivers for 2017-2018, KingMax Servos www.kingmaxhobby.com Gens Ace www.gensace.com, MIP www.miponline.com,Schelle , WWW. Schelleracing.com, Slavich Designs, GARCIA GRAPHIX

CHECK OUT GARCIA GRAPHIX ON FACEBOOK -LOOKING FOR 2017 TEAM DRIVER'S!
Raul Garcia is offline   Reply With Quote
Old 05-13-2014, 03:58 AM   #14459
Tech Champion
 
Join Date: Sep 2002
Location: Stokes, NC
Posts: 6,501
Trader Rating: 74 (100%+)
Default Finally a pic..

More..

__________________
Team and Sales Manager for USRC Imports, home of Sworkz! Looking for drivers for 2017-2018, KingMax Servos www.kingmaxhobby.com Gens Ace www.gensace.com, MIP www.miponline.com,Schelle , WWW. Schelleracing.com, Slavich Designs, GARCIA GRAPHIX

CHECK OUT GARCIA GRAPHIX ON FACEBOOK -LOOKING FOR 2017 TEAM DRIVER'S!

Last edited by Raul Garcia; 05-13-2014 at 06:03 PM.
Raul Garcia is offline   Reply With Quote
Old 05-13-2014, 06:49 AM   #14460
Tech Champion
 
fq06's Avatar
 
Join Date: Dec 2011
Location: Los Angeles
Posts: 5,628
Trader Rating: 11 (100%+)
Default

Is this what you were trying to imbed?
Nice paint job.

__________________
BCE SCT410 / Hobbywing 3656sd ~ RX8.2
DEX210 / Trinity 17.5 ~ RS.2
Westcoast Raceway (R.I.P.) | SMC | PowerLab
fq06 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
St Ives RC Club B4Bandit Australian Racing 16572 10-14-2017 01:35 AM
EPMTs check in here. (a subsidiary of TNT) overtki11 Singapore R/C Racers 55470 05-07-2017 11:57 PM
Team Durango DEX410 ASH93A Australian Racing 925 04-08-2013 09:51 PM



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 10:34 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net