R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-09-2010, 10:09 PM   #1051
Tech Fanatic
 
Brian C's Avatar
 
Join Date: Mar 2009
Location: Twain Harte, Ca
Posts: 820
Trader Rating: 30 (100%+)
Default

Quote:
Originally Posted by captain america View Post
Any wurd on how any of the Durangos are doing in Thailand?
Looking at the results from the first round it seems that Ryan was on a top 10 run and did not finish, his avg would have been top 5 or so. I haven't heard what happened but it seems that Ryan and the Durango are going very well.

Go Ryan!!!!
Brian C is offline   Reply With Quote
Old 11-10-2010, 04:14 AM   #1052
Tech Regular
 
nitrozilla's Avatar
 
Join Date: Oct 2010
Posts: 283
Trader Rating: 1 (100%+)
Default

i just read on redrc that he didnt finish Q1 and didnt even get to start Q2 both due to electrical problems. i hope he works it out b/c at of all the cars and drivers i have been really looking foward to watching him and the dnx-408 Hopefully this set-back doesnt get to his morale b/c i think he could do very well in the next round
nitrozilla is offline   Reply With Quote
Old 11-10-2010, 07:41 AM   #1053
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,425
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by nitrozilla View Post
i just read on redrc that he didnt finish Q1 and didnt even get to start Q2 both due to electrical problems.
"Electrical problems?" I hope that doesn't mean what we think it means...
captain america is offline   Reply With Quote
Old 11-10-2010, 08:10 AM   #1054
Tech Apprentice
 
Join Date: Oct 2010
Posts: 94
Default

Quote:
Originally Posted by captain america View Post
"Electrical problems?" I hope that doesn't mean what we think it means...
I was thinking the same thing
one-eight is offline   Reply With Quote
Old 11-10-2010, 08:50 AM   #1055
Tech Prophet
 
houston's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2004
Location: portland OR
Posts: 15,088
Trader Rating: 91 (100%+)
Default

Quote:
Originally Posted by one-eight View Post
I was thinking the same thing
Curious as to what you guys are thinking?



His car looked absolutely great when I was watching it for the part of the qual he was out there driving . Car looked really good
__________________
TEAM FUSION X ENGINES / TEAM BYRON ORIGINALS / TEAM PROLINE RACING TIRES / TEAM SICK GRAPHICS /TEAM KYOSHO / things I support: COMP HEAT DEALER /TEAM LUNSFORD/ FUSIONX™ USA / TEAM KYOSHO / "H.E.S."™ / BYRON FUELS / RC-OMGUSA/KICWEBDESIGNZ/AKA TIRES/PROLINE RACING TIRES /RAYA RACING/BUKU POWER CLUTCH/M2CRACING/special thanks to STAV and JIM HOTTIGREENMOUNTAINGRILLS.COM
houston is offline   Reply With Quote
Old 11-10-2010, 09:18 AM   #1056
Tech Elite
 
bring it on's Avatar
 
Join Date: Jun 2008
Location: Lake Tahoe, NV
Posts: 4,851
Trader Rating: 9 (100%+)
Default

__________________
Toro ESC - SkyRc - Caster Racing USA - Pr Racing USA - Gens Ace - Ares Motors - Highest Servos - Radiopost
Thanks to my sponsor at crpplus.com
bring it on is offline   Reply With Quote
Old 11-10-2010, 09:21 AM   #1057
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,425
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by houston View Post
Curious as to what you guys are thinking?



His car looked absolutely great when I was watching it for the part of the qual he was out there driving . Car looked really good
I can't speak for anyone else, but I was thinking (throttle) servo issues, since we've seen "electrical problems" with a certain other car that up until recently had a similar throttle servo layout. Know what I mean?

Ryan's skills are not in question, neither is the general handling of the 408, but we all know that when awe-inspiring driving/handling butts heads with mechanical gremlins, the gremlins always win.
captain america is offline   Reply With Quote
Old 11-10-2010, 09:21 AM   #1058
Tech Apprentice
 
Join Date: Oct 2010
Posts: 94
Default

Quote:
Originally Posted by houston View Post
Curious as to what you guys are thinking?
Been following the Serpent thread?
one-eight is offline   Reply With Quote
Old 11-10-2010, 10:19 AM   #1059
Tech Elite
 
transplantlife's Avatar
 
Join Date: Oct 2008
Location: Chicago, IL/St.Petersburg,FL
Posts: 2,073
Trader Rating: 43 (98%+)
Default





__________________
IM A SURVIOR OF A DOUBLE ORGAN TRANSPLANT KIDNEY/PANCREAS...PLEASE BE A ORGAN DONOR TO GIVE LIFE TO OTHERS!!
transplantlife is offline   Reply With Quote
Old 11-10-2010, 10:26 AM   #1060
Tech Prophet
 
houston's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2004
Location: portland OR
Posts: 15,088
Trader Rating: 91 (100%+)
Default

Quote:
Originally Posted by one-eight View Post
Been following the Serpent thread?
seems like a bad idea to get the servo that close

yes i have been aware of the serpent issue butu did not know that the d car followed suit = bad idea
__________________
TEAM FUSION X ENGINES / TEAM BYRON ORIGINALS / TEAM PROLINE RACING TIRES / TEAM SICK GRAPHICS /TEAM KYOSHO / things I support: COMP HEAT DEALER /TEAM LUNSFORD/ FUSIONX™ USA / TEAM KYOSHO / "H.E.S."™ / BYRON FUELS / RC-OMGUSA/KICWEBDESIGNZ/AKA TIRES/PROLINE RACING TIRES /RAYA RACING/BUKU POWER CLUTCH/M2CRACING/special thanks to STAV and JIM HOTTIGREENMOUNTAINGRILLS.COM
houston is offline   Reply With Quote
Old 11-10-2010, 10:27 AM   #1061
Tech Adept
 
Join Date: Mar 2010
Posts: 207
Trader Rating: 6 (100%+)
Default

I'm not sold on the heat issue being the reason for these failures honestly. Serpent or 408.

Not to get into an engineering debate here but, there just isn't that much thermal transfer available. We're talking a delta T of what, 100*F maybe surface to surface??? Couple that with it's location (really low on the chassis) and it's physical proximity, I just don't see that much heat being transfered into the servo.

It's not like it's a conduction issue where it's in direct contact. We're talking convection from an inch away. Air isn't a good conductor so there shouldn't be that much heat getting to the servo. I can't believe a servo wouldn't be able to handle surface temps of 120-130*F (I believe I had heard surface temp verification of 120's)? Put your hand an inch from the motor and see how little heat actually gets to you. It's not that significant.

I wonder if it has more to do with chassis flex and or shock on the servo based on it's mounting orientation. Being mostly surface mount construction (PCB fab), the shock/load applied 90* to the board maybe problematic????

Just talking out loud. I know it "appears" to be prevalant on both cars but I wonder if it's layout related more than anything....????
itbvolks is offline   Reply With Quote
Old 11-10-2010, 11:02 AM   #1062
Tech Apprentice
 
Join Date: Oct 2010
Posts: 94
Default

This horse is beaten fully to death^^^ Serpent had servo problems! Point blank-they addressed it-done!

Me and Captain America obviously had the same thought as Gerd was involved in the design of both. I dont think the servo is that close in the Durango is it? Just same designer sparked a gut scare-thats all! Nothing has been proven, no rumors started!!
one-eight is offline   Reply With Quote
Old 11-10-2010, 11:08 AM   #1063
Tech Addict
 
pntmachine's Avatar
 
Join Date: Apr 2008
Location: Tampa Bay, FL
Posts: 506
Default

You put your hand on a buggy chassis an inch away from the motor mount screws and you won't be leaving it there long my friend and will far exceed 120. Chassis' and mounts are designed to be heat sinks to some degree. Also the servo's are fractions off the chassis not an inch away. Just sayin'
__________________
Agama USA/ VP Pro USA
Agama 215/ RBMods Novarossi Plus4C/ Savox
Kyosho STRR Evo2/ RBMods P5XLT/ Hitec
Team Byrons Racing Fuels
pntmachine is offline   Reply With Quote
Old 11-10-2010, 11:13 AM   #1064
Tech Master
 
captain america's Avatar
 
Join Date: Nov 2005
Posts: 1,425
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by itbvolks View Post



I wonder if it has more to do with chassis flex and or shock on the servo based on it's mounting orientation. Being mostly surface mount construction (PCB fab), the shock/load applied 90* to the board maybe problematic????
This is my guesstimation as well. The throttle servos with the original 8IGHT were failing because of vibration/shock, and that seems to be what was causing similar issues with the Serpent. Both of those cars had their throttle servos mounted further aft than other buggies, which is the part of the car that takes the most beating.

If you doubt this, go for a ride on a bumpy road in the front passenger seat, then go down that same stretch of road, but sitting in the back seat. Now do it at ten times the speed and that's what your servo has to endure for a whole hour

On a more serious note, I hope I'm dead wrong and Ryan bounces back.
captain america is offline   Reply With Quote
Old 11-10-2010, 11:17 AM   #1065
Tech Lord
 
Jaz240's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2008
Location: Dwindle city
Posts: 12,492
Trader Rating: 52 (100%+)
Default

It's a little overboard to assume that Ryan's electrical issues = blown servo ala Serpent. Considering how long the Durango has been in testing I think someone would have mentioned by now if it had similar problems to the Serpent. Wait and see what the real issues are before assuming it's blowing servos
__________________
nothing to see here................................
Jaz240 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 06:34 PM.


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