R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 04-23-2010, 02:30 PM   #16
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

Thanks for your replies.

I am a paint engineer, working for a large paint company and I have been painting poly carbonate bodies for close to 20 years.

I do wash my bodies with dish washing detergent and wipe them with isopropanol before I paint.
When I painted the RS4, I did 2 R5-N's at the same time.

The Protoform bodies are fine as usual, just the RS4 has adhesion problems.
As I mentioned before, two of my friends painted theirs too with Tamiya spray cans and have the same problems.

Today I took a couple of cut offs of the RS4 body to the lab and did a few tests on them.

Turns out that the polycarbonate (PC) they are using has a surface tension of 20-22 N/mm, which is very low and does not provide enough polarity for paint adhesion.

The Protoform plastic has 67 N/mm, which is perfect.

Also, the density of the Titan PC varies considerable across the parts, which leads to areas that literally "reject" the paint.

After seeing these results, I added 2% Methyl Pyrollidone (water mixable solvent that attacks plastics) to the Fascolor/Createx paint and scuffed the PC with fine scotch brite

This together provided acceptable adhesion, but the PC quality, Titan is using for this body seems not very good.

The negative result is that you can't use chrome colors anymore since the show the scuff marks.

Btw, mould release agents on vacuum formed PC would be very unusual, but of course possible.
stefan is offline   Reply With Quote
Old 04-23-2010, 04:44 PM   #17
Tech Initiate
 
Join Date: Jan 2010
Posts: 34
Default

Salut Nico

je confirme ce que Maurice m'avait dit pour la RS4 plus stable sur la LAB-c01 que l'altis
essais effectué plusieurs fois le meme jour.
La nouvelle peinture qui remplace les boites neuves presque vides d'une marque tres connue aussi tient sans probleme sur cette carro

G
georges972 is offline   Reply With Quote
Old 04-26-2010, 12:54 AM   #18
Tech Initiate
 
Join Date: Jan 2010
Posts: 23
Default

Team titan realized the problem and have fixed it.

Luke
__________________
rc-direct.co.uk ,Team Titan ARC R10, Edam Spirit and Razor, Enneti tyres, Blitz bodyshells
Edam Racer is offline   Reply With Quote
Old 04-26-2010, 06:22 AM   #19
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

Yep, they did.
Great customer servicefrom Team Titan.

Now we can enjoy the superb handling of the body
stefan is offline   Reply With Quote
Old 04-26-2010, 07:22 AM   #20
Tech Regular
 
musti72's Avatar
 
Join Date: Sep 2007
Location: Turkey
Posts: 442
Default

Is this the same body as Xceed/Orcan Audi, or is it different?
__________________
Mustafa Alp

http://www.aytemizhobi.com
Turkish shop for: Serpent, Xceed, Sweep Racing, MyLaps
musti72 is offline   Reply With Quote
Old 04-26-2010, 08:33 AM   #21
Tech Elite
 
Riketsu's Avatar
 
Join Date: Aug 2004
Location: Puerto Rico
Posts: 2,514
Trader Rating: 32 (100%+)
Send a message via AIM to Riketsu
Default

Quote:
Originally Posted by musti72 View Post
Is this the same body as Xceed/Orcan Audi, or is it different?
Its different. It has similar but different handling characteristic. Obviously much cheaper and stronger than the Audi A5.
__________________
eBay user id: riketsukirai
Riketsu is offline   Reply With Quote
Old 05-02-2010, 02:30 PM   #22
Tech Adept
 
Join Date: Jan 2009
Location: Germany
Posts: 180
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Edam Racer View Post
Team titan realized the problem and have fixed it.

Luke
How can I see, that I get a body with the better surface tension?
SebO is offline   Reply With Quote
Old 05-12-2010, 12:56 PM   #23
Tech Adept
 
serpentamerica's Avatar
 
Join Date: Dec 2008
Posts: 225
Default

We have in stock the RS4. The problem on the lexan it's solved. Call your LHS or visit serpentamerica.com
__________________
Facebook: http://www.facebook.com/pages/Miami-FL/Serpent-America/120322987992068

www.serpentamerica.com
e-mail: [email protected]
telf: 1-305-677-3253
serpentamerica is offline   Reply With Quote
Old 05-14-2010, 07:18 PM   #24
Tech Master
 
CraigX's Avatar
 
Join Date: Aug 2002
Location: Baltimore, MD
Posts: 1,188
Trader Rating: 26 (100%+)
Send a message via AIM to CraigX
Default

Quote:
Originally Posted by serpentamerica View Post
We have in stock the RS4. The problem on the lexan it's solved. Call your LHS or visit serpentamerica.com
I don't see the body on the website.
__________________
RC America, Xray, Hudy, Sanwa, Motiv RC, Gravity RC, Max Power America, Protoform, Avid, EA Motorsports, TQ Wire, Prolevel RC, Ulti, 5 Nines
CraigX 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 06:10 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