R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-04-2011, 05:25 PM   #21031
Tech Apprentice
 
Join Date: Jul 2007
Location: Poole, UK
Posts: 66
Default

Quote:
Originally Posted by HarryLeach View Post
I haven't run a lot of boosted 13.5 TC, and I have little to no experience with an X12, but I think a decent starting point would be:

FDR: 6.5-7 [not 100% on this, test carefully]
End RPM: 22,000
Start RPM: 9,000
Boost: 40
Turbo: Max 10 [the car will be easier to drive and just as fast without Turbo if the lead-in to the straight isn't real fast, or the straight isn't real long, so only use in small increments, with lots of temp checks]
Turbo Ramp: 2
Turbo Delay: .4

Don't take this profile and run with it, you'll need to do quite a bit of testing and temperature checking. Start low on the Boost, and increase in increments of 10 if the temps are good and you need more speed. The X12 has a lot of torque, and likes to run warm, so if you reach a point where the temp is getting too high with the boost, you may want to gear up [lower FDR], a touch and try another test run.

If the acceleration is too smooth/slow, start reducing your END RPM in 1,000 RPM increments. Don't get greedy, there's only so much to gain from a tight RPM range. My lower limit would be 16,000 RPM, so there's a pretty good range to work with.

If the car is too snappy on corner exit, bring the START RPM down one choice on the list, should be 800-1,000 RPM spread between choices.

If you're trying to get more corner exit acceleration, reduce motor timing and/or raise the START RPM one choice on the list.

Again, check the motor temp frequently, make one change between runs, and slowly work towards the power band you want. Hopefully, it only takes a few test runs with the profile I would start with to get up to the 40 Boost [no turbo, set turbo LAST, after all other tweaks are to your liking], to get a decent motor temp after a 6min. run, and you can start adjusting from there.
Harry is not a million miles away but with an X12 I suspect you will want to try the FDR 7 to 7.5 - and personally I would start with the 4 dot or 3 dot timing insert.


Harry interestingly I found that I got more rip out of the corner with my 10.5 by lowering my start rpm. I had it around 12-13K and ended up lowering it to 8.5k
yellowshark is offline   Reply With Quote
Old 09-04-2011, 06:13 PM   #21032
Tech Master
 
HarryLeach's Avatar
 
Join Date: Feb 2009
Location: Hampton, VA, USA
Posts: 1,596
Send a message via AIM to HarryLeach
Default

Quote:
Originally Posted by yellowshark View Post
Harry is not a million miles away but with an X12 I suspect you will want to try the FDR 7 to 7.5 - and personally I would start with the 4 dot or 3 dot timing insert.


Harry interestingly I found that I got more rip out of the corner with my 10.5 by lowering my start rpm. I had it around 12-13K and ended up lowering it to 8.5k
Thanks for your input. I don't run the X12 since I'm not a fan of how warm they seem to need to be run to really rip. They're fast, I just prefer the Trinity/Epic motors more.

With a higher kV motor, such as a 10.5, you can probably get away with a lower end RPM, Start RPM, and a tighter range, simply because it's going to want to accelerate faster even without boost, than a lower kV wind.

When I've run a boosted 10.5 TC, the hard part for me wasn't finding speed, it was smoothing the power band enough that I wouldn't spin tires on corner exit every time I accidentally fat-fingered the throttle.

That said, I've seen quite a few guys under gear their motors with high boost and turbo levels to the point of causing more heat than if they geared up on the same profile.

The nice thing about custom profiles is everyone can tune to suit, I've just found that a very tight, early RPM range for boost makes the car very difficult to handle consistently.
__________________
Privateer racing lots of stuff.
Remember kids, racing isn't fair!
HarryLeach is offline   Reply With Quote
Old 09-05-2011, 01:16 AM   #21033
Tech Master
 
silvalis's Avatar
 
Join Date: Aug 2011
Location: Brisbane
Posts: 1,545
Trader Rating: 29 (100%+)
Default

I'm having problems downloading Hotwire - giving me a Service Unavailable message.
silvalis is offline   Reply With Quote
Old 09-05-2011, 10:38 AM   #21034
Team Tekin
 
Randy_Pike's Avatar
 
Join Date: Nov 2007
Location: Norcal
Posts: 9,702
Trader Rating: 6 (100%+)
Send a message via Yahoo to Randy_Pike
Default

Quote:
Originally Posted by silvalis View Post
I'm having problems downloading Hotwire - giving me a Service Unavailable message.
It appears our server is down for maintenance.
__________________
"Things may come to those who wait, but only the things left by those who hustle." Abraham Lincoln

Tekin,Protek,A-Main Hobbies,JConcepts,Avid RC,Yokomo,MIP,SikLidz,FactoryRC, www.randypikerc.com
Randy_Pike is offline   Reply With Quote
Old 09-06-2011, 06:43 AM   #21035
Tech Master
 
Join Date: Feb 2009
Posts: 1,920
Trader Rating: 1 (100%+)
Default

Hi guys

I need a set up for a Thunder power 13.5 motor with my Tekin for a small carpet track , i was looking for Jason Schreffler's set up from the snowbirds but cannot find it ;(

Can anyone help ???

Thanks in advance Phil
sidecarphil1 is offline   Reply With Quote
Old 09-06-2011, 07:38 AM   #21036
Tech Addict
 
mazmo's Avatar
 
Join Date: Mar 2005
Posts: 738
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by sidecarphil1 View Post
Hi guys

I need a set up for a Thunder power 13.5 motor with my Tekin for a small carpet track , i was looking for Jason Schreffler's set up from the snowbirds but cannot find it ;(

Can anyone help ???

Thanks in advance Phil
Here is his 2010 snowbirds set up for 10.5, should be fine with 13.5

10.5 Speed Passion
Endbell timing: N/A
Gearing 7.71
Drag Brake 30
brake strength 100
Limiter Off
Neutral width 10
Voltage cut off 2
Motor Type 1
Throttle Profile 5
Timing Boost 55
Turbo Boost 10
Turbo Delay 0
Start RPM 5300
End RPM 22,500
Ramp Rate 3.0
__________________
Team TOP Australia www.topracing.net.au

TOP Photon EX 17.5 + TOP Photon EX 21.5 + TOP Rebel F1 21.5

ORCA | Tekin RS Pro | Tekin Gen 2 RPM | Ko Pro-Po | EPIC Trinity
mazmo is offline   Reply With Quote
Old 09-06-2011, 07:40 AM   #21037
Tech Master
 
Join Date: Feb 2009
Posts: 1,920
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by mazmo View Post
Here is his 2010 snowbirds set up for 10.5, should be fine with 13.5

10.5 Speed Passion
Endbell timing: N/A
Gearing 7.71
Drag Brake 30
brake strength 100
Limiter Off
Neutral width 10
Voltage cut off 2
Motor Type 1
Throttle Profile 5
Timing Boost 55
Turbo Boost 10
Turbo Delay 0
Start RPM 5300
End RPM 22,500
Ramp Rate 3.0
ok cool thanks , thought he was running Thunderpower motors ???
sidecarphil1 is offline   Reply With Quote
Old 09-06-2011, 08:43 AM   #21038
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

Quote:
Originally Posted by sidecarphil1 View Post
Hi guys

I need a set up for a Thunder power 13.5 motor with my Tekin for a small carpet track , i was looking for Jason Schreffler's set up from the snowbirds but cannot find it ;(

Can anyone help ???

Thanks in advance Phil
what size is the track
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 09-06-2011, 09:27 AM   #21039
Tech Master
 
Join Date: Feb 2009
Posts: 1,920
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by 20 SMOKE View Post
what size is the track
dont know yet haha race is next week

it is a small technical carpet track is all i know
sidecarphil1 is offline   Reply With Quote
Old 09-06-2011, 05:03 PM   #21040
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

how small is small,if you find some info on it lmk
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 09-06-2011, 07:04 PM   #21041
Suspended
 
Join Date: Aug 2010
Posts: 1,990
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by 20 SMOKE View Post
how small is small,if you find some info on it lmk
Did you ask your girlfriend that question?
__________________
Pimp Formally Known as OG
PFKAOG is offline   Reply With Quote
Old 09-06-2011, 07:07 PM   #21042
Tech Addict
 
Join Date: Aug 2010
Posts: 629
Trader Rating: 15 (100%+)
Default 17.5 boosted


Last edited by mdhyams; 09-06-2011 at 08:06 PM. Reason: :)
mdhyams is offline   Reply With Quote
Old 09-06-2011, 07:11 PM   #21043
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

Quote:
Originally Posted by PFKAOG View Post
Did you ask your girlfriend that question?
grow up
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 09-07-2011, 02:25 AM   #21044
Tech Champion
 
tc3team's Avatar
 
Join Date: Mar 2006
Location: UK
Posts: 6,151
Default

Quote:
Originally Posted by sidecarphil1 View Post
dont know yet haha race is next week

it is a small technical carpet track is all i know
I race on a 10x15m carpet track, but with a redline 13.5.

If you want my setup let me know
__________________
Fusion Hobbies / www.horshamrc.org

The wife stops me being sane and the r/c stops me from going insane....
tc3team is offline   Reply With Quote
Old 09-08-2011, 01:41 AM   #21045
Tech Master
 
Join Date: Feb 2009
Posts: 1,920
Trader Rating: 1 (100%+)
Default

thanks i will find some more info out

does no one use the Thunder power motors ??
sidecarphil1 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tekin Redline RS Sensored ESC and motors, opinions for offroad? Cain Electric Off-Road 4230 06-07-2015 04:38 PM
Sensored vs. Sensorless lemansracer Electric On-Road 71 02-14-2009 03:19 AM
New Tekin Redline Sensored Motors are Roar Legal! Randy_Pike Electric On-Road 3 08-05-2008 02:08 AM
Tekin Redline Sensored 10.5 HUCKMAN Electric On-Road 6 07-15-2008 08:50 PM
sensored vs sensorless bprocket Rookie Zone 5 05-16-2008 09:38 AM


Tags
v203, vegas 2.0


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 09:57 AM.


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