R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-28-2013, 09:11 AM   #3811
Tech Fanatic
 
esckalayd's Avatar
 
Join Date: Mar 2011
Location: Orlando, FL
Posts: 871
Trader Rating: 7 (100%+)
Default Fan/Heat Sink combo

What do you guys recommend as a fan/heat sink combo? I saw the nice fan mount piece RSD makes for the T4, but is just a 30mm fan enough to cool down the motor or do recommend getting heat sink with a fan? I am not going to be running mod, more likely 17.5 or 13.5 with the physical timing up on the motor to get the best performance.

Any advice will help, thanks
__________________
---------------------------------------------------------------------------------
Anthony Schimizzi AKA ~The Rookie~
| Serpent America - DeSoto Racing - Murnan Modified |
Bodies by Paintin Pete
esckalayd is offline   Reply With Quote
Old 05-28-2013, 09:12 AM   #3812
Tech Fanatic
 
erchn's Avatar
 
Join Date: Aug 2010
Location: Union City, CA
Posts: 779
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by bvoltz View Post
Thanks I will take a look..
You can also mark the belt and pulley with a silver sharpie, and go run. If the two marks no longer line up...
__________________
RCAmerica ; Team Powers USA ; Reflex Racing ; RC≥ RC Crew Chief ; Bezerk RC
erchn is offline   Reply With Quote
Old 05-28-2013, 09:57 AM   #3813
Tech Master
 
edhchoe's Avatar
 
Join Date: Jul 2004
Location: vancouver, wa, usa
Posts: 1,509
Trader Rating: 41 (100%+)
Default

Quote:
Originally Posted by esckalayd View Post
What do you guys recommend as a fan/heat sink combo? I saw the nice fan mount piece RSD makes for the T4, but is just a 30mm fan enough to cool down the motor or do recommend getting heat sink with a fan? I am not going to be running mod, more likely 17.5 or 13.5 with the physical timing up on the motor to get the best performance.

Any advice will help, thanks
I have this fan on one of my touring cars and it really blows. It's The most powerful fan I have seen.


Quote:
Originally Posted by erchn View Post
You can also mark the belt and pulley with a silver sharpie, and go run. If the two marks no longer line up...
+1.
edhchoe is offline   Reply With Quote
Old 05-28-2013, 10:33 AM   #3814
Tech Elite
 
Skiddins's Avatar
 
Join Date: Feb 2006
Location: Windsor, UK
Posts: 4,529
Default

Quote:
Originally Posted by bvoltz View Post
How do you tell if the front belt is slipping? I'm having a big problem with the rear passing the front of the car, acting like it is a 2 wheel drive... The belt nubs are in tack and when I hold the front wheels (with a front diff in) I have a lot of resistance, but I'm trying to figure out if the belt is slipping causing this issue...
If you even think it might be slipping, you're probably running it too loose.

Loosen the rear belt and tighten the front.
__________________
Xray T4'16, T4'14 (Wet Car)
Xray X12 2016
Xray X1'16
wlrc.co.uk (West London Racing Centre)
RD Disco
Skiddins is offline   Reply With Quote
Old 05-28-2013, 10:56 AM   #3815
Tech Addict
 
chasingthepack's Avatar
 
Join Date: Apr 2013
Location: hanworth uk
Posts: 728
Default

Quote:
Originally Posted by esckalayd View Post
What do you guys recommend as a fan/heat sink combo? I saw the nice fan mount piece RSD makes for the T4, but is just a 30mm fan enough to cool down the motor or do recommend getting heat sink with a fan? I am not going to be running mod, more likely 17.5 or 13.5 with the physical timing up on the motor to get the best performance.

Any advice will help, thanks
with just a fan i was getting temps around 100c i then made a shroud from old bodyshell wheel cutout arches to keep the air just on the motor,same track same conditions im now getting temps of 80/85c,im using a 40x15 mm fan ,its a 5v so when run direct off the battery it really moves some air,been using the same fan for 3 months now still works fine,id go for the 40mm fan as its a better size match for the motor
__________________
yokomo bd7 16_lrp works team-trinity d4 17.5_futaba 4pks_futaba bls
wet/damp car xray t4-14-r10 pro-team wave 17.5 savox 1251
chasingthepack is offline   Reply With Quote
Old 05-28-2013, 11:03 AM   #3816
Tech Addict
 
chasingthepack's Avatar
 
Join Date: Apr 2013
Location: hanworth uk
Posts: 728
Default

Quote:
Originally Posted by Skiddins View Post
The LTC-R give good turn in, but sometimes you can use the Speed6 and get better lap times without it seeming to affect the steering.
I've been running the Speed6 at WLRC for the last few meetings.

Next time there I will most likely be running mod.

Skiddins
have you heard of or tried an src kruzer?ive just painted one up to try this weekend at amcc,its supposed to have more downforce than the mazda s6 at the rear and more front than an ltcr,probably going to be too much if the claims are true
__________________
yokomo bd7 16_lrp works team-trinity d4 17.5_futaba 4pks_futaba bls
wet/damp car xray t4-14-r10 pro-team wave 17.5 savox 1251
chasingthepack is offline   Reply With Quote
Old 05-28-2013, 11:13 AM   #3817
Tech Master
 
Xpress's Avatar
 
Join Date: Nov 2001
Location: Dirt sucks!
Posts: 1,585
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by chasingthepack View Post
with just a fan i was getting temps around 100c i then made a shroud from old bodyshell wheel cutout arches to keep the air just on the motor,same track same conditions im now getting temps of 80/85c,im using a 40x15 mm fan ,its a 5v so when run direct off the battery it really moves some air,been using the same fan for 3 months now still works fine,id go for the 40mm fan as its a better size match for the motor
For anybody in the US 30mm is the largest fan allowed by ROAR.
__________________
"Desire is the key to motivation, but it's the determination and commitment to an unrelenting pursuit of laying it down - a commitment to excellence - that will enable you to attain the success you seek to beat ass."

-Espo
Xpress is offline   Reply With Quote
Old 05-28-2013, 11:37 AM   #3818
Tech Fanatic
 
esckalayd's Avatar
 
Join Date: Mar 2011
Location: Orlando, FL
Posts: 871
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by Xpress View Post
For anybody in the US 30mm is the largest fan allowed by ROAR.
I did notice this in the ROAR rules which made me look into that new R1 fan shown above. Just wasn't sure if a fan alone would do justice on keeping the motor cool or if a heat sink with a fan was a better idea. I do see a lot of cars with just the fan on the T4.
__________________
---------------------------------------------------------------------------------
Anthony Schimizzi AKA ~The Rookie~
| Serpent America - DeSoto Racing - Murnan Modified |
Bodies by Paintin Pete
esckalayd is offline   Reply With Quote
Old 05-28-2013, 12:00 PM   #3819
Tech Elite
 
bvoltz's Avatar
 
Join Date: Jun 2005
Location: Bedtime with Teddi
Posts: 3,635
Trader Rating: 44 (100%+)
Default

Quote:
Originally Posted by Skiddins View Post
If you even think it might be slipping, you're probably running it too loose.

Loosen the rear belt and tighten the front.
It was just a thought given that the car is acting like a 2WD... I think it is something in the front of the car.. the other thing I need to test is holding the pulley and one wheel and try to turn the other wheel... It may have a gear inside the front diff... Just trying to look at anything that would cause the front wheels to pull, so I think this is the issue... The belt looks fine but.... I have not ran mod before and having a hell of time with it...
__________________
Wheeling an Xray T4 and T4 14 using a Ko Propo, powered by EA motors and Speed Passion Speedo, paid for by my wife.

Digi3Dworks - 3D printing for the medical Field.
bvoltz is offline   Reply With Quote
Old 05-28-2013, 12:01 PM   #3820
Tech Master
 
Join Date: Nov 2012
Posts: 1,111
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by CristianTabush View Post
Springs really depend on personal preference I have found.

With that said,

For Medium to Medium High Grip Asphalt, I like:
-Silver F/R and
-Silver F and Pink R.

For High Grip Asphalt I like:
-Blue F/R,
-Pink F and Blue R and
-Blue F and Black R

Ethan Erchinger just won the Open Modified Class at the Reedy Race using Red F/R with a 1.2 Sway Bar in the Front and no Sway Bar rear. The Red Springs are stiffer than the silvers.

On Carpet, most of the guys are running Blue and Black Springs.

This week we will also have a new spring to add to our asphalt spring set that will be softer than the silver spring.
I haven't really checked your website as of yet, do you have a set of asphalt springs with all rates included in a package, or I have to buy all rates separate also with carpet springs
JOE SI is offline   Reply With Quote
Old 05-28-2013, 12:07 PM   #3821
Tech Master
 
Join Date: Nov 2012
Posts: 1,111
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by chasingthepack View Post
have you heard of or tried an src kruzer?ive just painted one up to try this weekend at amcc,its supposed to have more downforce than the mazda s6 at the rear and more front than an ltcr,probably going to be too much if the claims are true
I used that body on my NT1 and stuck with it. If its like the nitro body it'll be good outside
JOE SI is offline   Reply With Quote
Old 05-28-2013, 12:09 PM   #3822
Tech Elite
 
CristianTabush's Avatar
 
Join Date: Oct 2002
Location: Houston
Posts: 2,676
Trader Rating: 11 (100%+)
Default

Joe, we sell both sets and pairs of springs.

Barry, what CST oil is in your front diff? If it is not thick enough, it can act like a 2wd under power.
__________________
REFLEX RACING/ RSD/ GIZMO RACING USA/ HOBBYWING/ AXON/ QTEQ/ TEAM PRIME
CristianTabush is offline   Reply With Quote
Old 05-28-2013, 12:48 PM   #3823
Tech Elite
 
bvoltz's Avatar
 
Join Date: Jun 2005
Location: Bedtime with Teddi
Posts: 3,635
Trader Rating: 44 (100%+)
Default

Quote:
Originally Posted by CristianTabush View Post
Joe, we sell both sets and pairs of springs.

Barry, what CST oil is in your front diff? If it is not thick enough, it can act like a 2wd under power.
1 million....
__________________
Wheeling an Xray T4 and T4 14 using a Ko Propo, powered by EA motors and Speed Passion Speedo, paid for by my wife.

Digi3Dworks - 3D printing for the medical Field.
bvoltz is offline   Reply With Quote
Old 05-28-2013, 12:54 PM   #3824
Tech Elite
 
TT_Vert's Avatar
 
Join Date: Dec 2003
Location: Streamwood, IL.
Posts: 3,741
Trader Rating: 61 (100%+)
Default

Speaking of front diffs. Ive been hearing that a tight diff is better on tight carpet type tracks than a spool. Any opinions on that?

Dave
TT_Vert is offline   Reply With Quote
Old 05-28-2013, 01:00 PM   #3825
Tech Elite
 
bvoltz's Avatar
 
Join Date: Jun 2005
Location: Bedtime with Teddi
Posts: 3,635
Trader Rating: 44 (100%+)
Default

Quote:
Originally Posted by TT_Vert View Post
Speaking of front diffs. Ive been hearing that a tight diff is better on tight carpet type tracks than a spool. Any opinions on that?

Dave
Yep... Diff will give you a little more steering...
__________________
Wheeling an Xray T4 and T4 14 using a Ko Propo, powered by EA motors and Speed Passion Speedo, paid for by my wife.

Digi3Dworks - 3D printing for the medical Field.
bvoltz is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Xray T3 2012 rasta_man Electric On-Road 4220 11-09-2016 02:45 PM
RC10B4/T4 Forum DerekL Electric Off-Road 14331 01-01-2016 03:18 PM
****HUGE AE T4 TRUCK TIRE SALE *** CRCDUDE R/C Items: For Sale/Trade 32 08-23-2010 09:55 AM


Tags
xray t4


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 08:01 PM.


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

SEO by vBSEO 3.5.0