R/C Tech Forums

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

Like Tree3Likes
Reply
 
Thread Tools Search this Thread
Old 09-19-2010, 11:04 AM   #241
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by landau View Post
R12 shock leaks oil.

1.shock O-ring is slight small,
2. shock inner spacer hole is slight large,

solution.
1, I use tamiya air remover and shock oil.

Soak O-rings with shock oil in remover, and pump.
This dilate O-ring.

2, make a small hole with grue and drill (1.8mm) two spacer/1 shock.
Well, all R12 shocks are leaking oil... since I dont have a turning machine, do the asso spacers fit the shock better??
I'm guessing the O-ring cant handle the movement the spacers let the piston do. So having better spacers should solve the problem.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 09-19-2010, 03:40 PM   #242
Tech Master
 
Me_MrTyson's Avatar
 
Join Date: Nov 2009
Posts: 1,801
Trader Rating: 11 (100%+)
Send a message via MSN to Me_MrTyson Send a message via Skype™ to Me_MrTyson
Default

The shock design would say maybe they leak rather than blow up...

As they have no holes in the piston where the oil can move between sections of the shock..

Next best thing would be to leak else would create pressure inside the sealed unit.

Every few races it passes the time rebuilding the shocks

Also means full aware of how much shock oil is in the shocks.
__________________
v-dezign // black diamond

Hoot RC for Local Supplies > www.hootrc.com.au
Me_MrTyson is offline   Reply With Quote
Old 09-24-2010, 07:44 AM   #243
Tech Rookie
 
Join Date: Apr 2007
Posts: 15
Default Front end

Does anybody have a front end they want to sell? or can somebody make a list of all the parts i need to purchase to have a complete extra front end. I do not want a 12th scale i would like to run this front end on my oval car. email is ok [email protected]
merich401 is offline   Reply With Quote
Old 09-24-2010, 11:05 AM   #244
OVA
Tech Champion
 
OVA's Avatar
 
Join Date: Dec 2002
Location: WASHINGTON
Posts: 8,764
Trader Rating: 77 (100%+)
Default

Anybody got a good carpet setup?
OVA is offline   Reply With Quote
Old 09-30-2010, 11:07 PM   #245
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

I solved my leaking shock problem, ordered the rebuild set from the associated shocks. And as Landau said, the holes in the asso spacers are a lot smaller, these fit the piston quite nice.
On top of that I noticed not all O-rings were compressed!! I also added a small ring so the O-ring would be compressed a little bit.

Now all shocks seem to be leak free and smooth.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 10-02-2010, 10:33 AM   #246
Tech Master
 
CanyonCarverR1's Avatar
 
Join Date: Jan 2008
Location: NorCal
Posts: 1,340
Trader Rating: 13 (100%+)
Default

Is this car better suited for carpet or asphault?
CanyonCarverR1 is offline   Reply With Quote
Old 10-02-2010, 09:29 PM   #247
OVA
Tech Champion
 
OVA's Avatar
 
Join Date: Dec 2002
Location: WASHINGTON
Posts: 8,764
Trader Rating: 77 (100%+)
Default

Quote:
Originally Posted by CanyonCarverR1 View Post
Is this car better suited for carpet or asphault?
The R12 won the world championship out door and indoor race...
OVA is offline   Reply With Quote
Old 10-03-2010, 10:58 AM   #248
Tech Master
 
CanyonCarverR1's Avatar
 
Join Date: Jan 2008
Location: NorCal
Posts: 1,340
Trader Rating: 13 (100%+)
Default Wheels

Do you have to use the yokomo wheels or can you use other brands such as Calandra?
CanyonCarverR1 is offline   Reply With Quote
Old 10-03-2010, 11:06 AM   #249
Tech Initiate
 
MackanG's Avatar
 
Join Date: Nov 2003
Location: Sweden
Posts: 23
Default

Quote:
Originally Posted by CanyonCarverR1 View Post
Do you have to use the yokomo wheels or can you use other brands such as Calandra?
Just swap the rear Axel. I was running mine today with a CRC Axel and JACO Prism.
MackanG is offline   Reply With Quote
Old 10-04-2010, 03:23 AM   #250
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

How do most set their droop crews??
The std Yokomo setting gives a lot of spring preload and the front suspension just doesnt seem to work... I need a camber setting of about 3 degrees to make the tires wear ok. Car is also extremely twitchy in the first turn-in, but after that looses steering, the front just doesnt grip.
I'm guessing this is because the suspension is so hard from the preload, the chassis just rotates around the tire and doesnt go into the suspension.
I already tried running only the center spring, but this is a disaster!

Next I'm gonna try to drive the droop like I would any other front end. this means no preload and almost no droop.
I'm also gonna try driving "normal" tires, jaco's, so I know for sure it isnt a tire problem.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 10-04-2010, 04:59 AM   #251
Tech Master
 
Me_MrTyson's Avatar
 
Join Date: Nov 2009
Posts: 1,801
Trader Rating: 11 (100%+)
Send a message via MSN to Me_MrTyson Send a message via Skype™ to Me_MrTyson
Default

Quote:
Originally Posted by Quante View Post
How do most set their droop crews??
The std Yokomo setting gives a lot of spring preload and the front suspension just doesnt seem to work... I need a camber setting of about 3 degrees to make the tires wear ok. Car is also extremely twitchy in the first turn-in, but after that looses steering, the front just doesnt grip.
I'm guessing this is because the suspension is so hard from the preload, the chassis just rotates around the tire and doesnt go into the suspension.
I already tried running only the center spring, but this is a disaster!

Next I'm gonna try to drive the droop like I would any other front end. this means no preload and almost no droop.
I'm also gonna try driving "normal" tires, jaco's, so I know for sure it isnt a tire problem.


Will be very interested to hear your finding on jaco's

Was planning on running crc as my test might order some this week


Been playing with droop and the setups u can find on the internet have 8mm droop or 7mm


These work fine when.running 3.4mm ride height not 5mm which would need on outdoor tracks


2.5 or 3.0 is normal camber from again the setups on the internet

Even the rc12 5 and 5.1 they used 3 degrees
__________________
v-dezign // black diamond

Hoot RC for Local Supplies > www.hootrc.com.au
Me_MrTyson is offline   Reply With Quote
Old 10-04-2010, 01:01 PM   #252
Tech Regular
 
Join Date: Jun 2007
Posts: 322
Default

Quote:
Originally Posted by Me_MrTyson View Post
Will be very interested to hear your finding on jaco's

Was planning on running crc as my test might order some this week


Been playing with droop and the setups u can find on the internet have 8mm droop or 7mm


These work fine when.running 3.4mm ride height not 5mm which would need on outdoor tracks


2.5 or 3.0 is normal camber from again the setups on the internet

Even the rc12 5 and 5.1 they used 3 degrees

HMMMMM.....3 Degrees of Camber is not normal on carpet. For stock .25 to
.50 is normal but rarely no more than 1 degree. For Mod i hear guys running 2 degrees. I would look for a bent kingpin or something else...

Steve
sdunnmcp is offline   Reply With Quote
Old 10-04-2010, 05:28 PM   #253
Tech Master
 
Me_MrTyson's Avatar
 
Join Date: Nov 2009
Posts: 1,801
Trader Rating: 11 (100%+)
Send a message via MSN to Me_MrTyson Send a message via Skype™ to Me_MrTyson
Default

Quote:
Originally Posted by sdunnmcp View Post
HMMMMM.....3 Degrees of Camber is not normal on carpet. For stock .25 to
.50 is normal but rarely no more than 1 degree. For Mod i hear guys running 2 degrees. I would look for a bent kingpin or something else...

Steve
Steve,

Here are some of the setups which was talking about, maybe it is the track but the setups for the most where all outdoors.

Some are from last year and not even R12's setup but shows in Japan 2+ caster is very popular


http://www.teamyokomo.com/jpn/downlo...oto_rc12r5.pdf

http://www.petitrc.com/reglages/asso...ay20091122.pdf

Setup from IIC for 17.5 RC12 5.1 on carpet still 1.5 caster

http://www.petitrc.com/reglages/asso...17.5200909.pdf

This setup is for a R12 from a Team driver and he uses 3 degree

http://www.petitrc.com/reglages/yoko...ki20100828.pdf
__________________
v-dezign // black diamond

Hoot RC for Local Supplies > www.hootrc.com.au
Me_MrTyson is offline   Reply With Quote
Old 10-04-2010, 07:36 PM   #254
Tech Champion
 
RedBullFiXX's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Intergalactic Planetary
Posts: 6,542
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Me_MrTyson View Post
Steve,

Here are some of the setups which was talking about, maybe it is the track but the setups for the most where all outdoors.

Some are from last year and not even R12's setup but shows in Japan 2+ caster is very popular


http://www.teamyokomo.com/jpn/downlo...oto_rc12r5.pdf

http://www.petitrc.com/reglages/asso...ay20091122.pdf

Setup from IIC for 17.5 RC12 5.1 on carpet still 1.5 caster

http://www.petitrc.com/reglages/asso...17.5200909.pdf

This setup is for a R12 from a Team driver and he uses 3 degree

http://www.petitrc.com/reglages/yoko...ki20100828.pdf
Aside from Andrew's setups, the others are for "Asphalt" which is consistent with what has been said. Not Carpet settings.
__________________
--> 12th scale Information Source <--

"Men do not quit playing because they grow old; they grow old because they quit playing."
― Oliver Wendell Holmes Jr.
RedBullFiXX is offline   Reply With Quote
Old 10-05-2010, 03:43 AM   #255
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by sdunnmcp View Post
HMMMMM.....3 Degrees of Camber is not normal on carpet. For stock .25 to
.50 is normal but rarely no more than 1 degree. For Mod i hear guys running 2 degrees. I would look for a bent kingpin or something else...

Steve
Yep, I know, been running that track for 5 years now and I've never used more than 1 or 1.5 degrees camber. This and the fact the car isnt driving all to stable (to quote my friend: "I cant believe you keep it on the track") makes me believe the front isnt working and that the car just lifts on the tire while cornering.
I've now set the droop to the 7mm, measured as per setup sheet, and the front feels a lot better when pushing it down.
Hopefully I can test some more this weekend.

I've had some time yesterday so I made the following adjustments:
- Droop -> 7mm
- Center shock: still not very oil tight, replaced by hotbodies.
- same prob (but not that bad) on the side shock, replaced by a CEFX dampertube (still the best to have in the rear, but thats my opinion).
- Rear axle for std rims

When this works well, I'll try going back to the std setup one at a time.
These are all components that I trust that will do a good job.
__________________
Make it idiot-proof, and someone will make a better idiot.

Last edited by Quante; 10-05-2010 at 03:44 AM. Reason: typo
Quante is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Schumacher R12 Fusion Fred Perkins Nitro On-Road 549 10-08-2012 03:19 PM
Yokomo GT-4W with R12 rossi motor Boadazofa Australia For Sale/Trade 12 06-05-2009 08:50 PM
HUGE sellout...R12, XXXS G+, XXX-T, XXX, RTR Stampede, MX-3 FHSS plus MUCH more! WisdomRacing R/C Items: For Sale/Trade 13 06-25-2008 02:29 PM
Yokomo GT-4??? bgotori Nitro On-Road 263 05-09-2002 07:22 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 07:50 AM.


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