BMI's DB12R


Old 08-11-2008, 02:12 PM
  #5281  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Well it appears part of the problems I was having is because of the sensor wires from LRP are so freakin stiff and caused tweak the way I had the car set up. I moved the wire and it helped. Anyone know of any softer sensor wire setups? I saw the Xpress one this weekend with the braided wire cover and that looked a lot better.

Also I forgot to ask when I talked to Jason on the phone...what are the other mounting holes for for the damper tubes? Under what circumstances would I mount the tubes there?
InspGadgt is offline  
Reply With Quote
Old 08-11-2008, 02:40 PM
  #5282  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,841
Trader Rating: 13 (100%+)
Default

It doesnt really make a big difference in handling. Its more of a convenience for running the wires in that area. It gives you a little adjustment.
protc3 is offline  
Reply With Quote
Old 08-11-2008, 07:36 PM
  #5283  
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,547
Default

Jason,
What type of gear for the speedpassion 17.5 at the iic, I beleive that the track is 100x60.

I've still yet to run the 12r5 as I realy enjoy driving my db12r.
Thanks,
E
EricF is offline  
Reply With Quote
Old 08-12-2008, 03:55 AM
  #5284  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,841
Trader Rating: 13 (100%+)
Default

Im not sure being that i have never run a 17.5. I would imagine that it is going to be a difficult motor to overgear.
protc3 is offline  
Reply With Quote
Old 08-12-2008, 05:50 AM
  #5285  
Tech Champion
iTrader: (3)
 
Nova F1 Racer's Avatar
 
Join Date: Mar 2003
Location: Peoples Republic of Northern Virginia
Posts: 5,682
Trader Rating: 3 (100%+)
Default

Originally Posted by EricF View Post
Jason,
What type of gear for the speedpassion 17.5 at the iic, I beleive that the track is 100x60.

I've still yet to run the 12r5 as I realy enjoy driving my db12r.
Thanks,
E
I would strat with 78 pinion and 45 spur....
Nova F1 Racer is offline  
Reply With Quote
Old 08-12-2008, 07:28 AM
  #5286  
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,547
Default

Originally Posted by Nova F1 Racer View Post
I would strat with 78 pinion and 45 spur....
I thin yo mean a 78 spur and a 45 pinion. which is kind of where I thought. I mainly wanted to know if it might require a different gearing than the Hacker motor that I currently run.
Thanks,
E
EricF is offline  
Reply With Quote
Old 08-12-2008, 07:41 AM
  #5287  
Tech Regular
iTrader: (8)
 
Jekyll's Avatar
 
Join Date: Dec 2001
Location: Maryland
Posts: 430
Trader Rating: 8 (100%+)
Default

Originally Posted by EricF View Post
Jason,
What type of gear for the speedpassion 17.5 at the iic, I beleive that the track is 100x60.

I've still yet to run the 12r5 as I realy enjoy driving my db12r.
Thanks,
E

I was running my SP 17.5 at a roll out of around 89-91mm on a 46x100 high bite indoor asphalt track and the motor temp was only coming off at 138 degrees.
Jekyll is offline  
Reply With Quote
Old 08-12-2008, 12:14 PM
  #5288  
Tech Champion
iTrader: (3)
 
Nova F1 Racer's Avatar
 
Join Date: Mar 2003
Location: Peoples Republic of Northern Virginia
Posts: 5,682
Trader Rating: 3 (100%+)
Default

Originally Posted by Nova F1 Racer View Post
I would strat with 78 pinion and 45 spur....
Originally Posted by EricF View Post
I thin yo mean a 78 spur and a 45 pinion. which is kind of where I thought. I mainly wanted to know if it might require a different gearing than the Hacker motor that I currently run.
Thanks,
E
Originally Posted by Jekyll View Post
I was running my SP 17.5 at a roll out of around 89-91mm on a 46x100 high bite indoor asphalt track and the motor temp was only coming off at 138 degrees.
No, thats what I run....


Hmmm... Maybe thats why everyone is faster than me... Right Jeryll?
Nova F1 Racer is offline  
Reply With Quote
Old 08-12-2008, 05:07 PM
  #5289  
Tech Elite
iTrader: (90)
 
chris moore's Avatar
 
Join Date: Mar 2004
Location: Phx AZ
Posts: 3,816
Trader Rating: 90 (99%+)
Default

Originally Posted by EricF View Post
Jason,
What type of gear for the speedpassion 17.5 at the iic, I beleive that the track is 100x60.

I've still yet to run the 12r5 as I realy enjoy driving my db12r.
Thanks,
E
Hey Eric I've been running a 76/43 at speedsports with my Novak 17.5, been comming off at around 100F. That track is smaller than CH but I was thinking of trying a tooth or more next time. You could also ask Kyle what he's gearing his hacker at.

Chris
chris moore is offline  
Reply With Quote
Old 08-12-2008, 05:09 PM
  #5290  
Tech Regular
iTrader: (1)
 
baf1's Avatar
 
Join Date: Aug 2007
Location: fredrick.MD
Posts: 303
Trader Rating: 1 (100%+)
Default yo.

...
baf1 is offline  
Reply With Quote
Old 08-12-2008, 07:47 PM
  #5291  
Tech Addict
iTrader: (10)
 
Xtant3150c's Avatar
 
Join Date: Dec 2002
Location: Kaneohe, HI
Posts: 681
Trader Rating: 10 (100%+)
Default

Got my 1st ever TQ in 12th Scale at our race on Sunday!

Finished 3rd in the Main though. Also had the fastest lap in the Main. But anytime I can finish Top 3 is an accomplishment as far as I am concerned

The new layout seems to have been an improvement. And I am finally using the body that came with it when I bought it. I kind of feel bad beating this thing up
Attached Thumbnails BMI's DB12R-bmi1-small-.jpg   BMI's DB12R-bmi2-small-.jpg  
Xtant3150c is offline  
Reply With Quote
Old 08-12-2008, 08:54 PM
  #5292  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Hopefully I'll be up with you there next race Xtant I'm going back to the tires I had on the car when it was winning.
InspGadgt is offline  
Reply With Quote
Old 08-13-2008, 07:59 AM
  #5293  
Tech Adept
 
Join Date: Mar 2007
Posts: 225
Default

Jason,

Sorry, I know you have been asked this question a million times.

What are thoughts on balancing these cars out? Do you take into consideration the unsprung weight on the pod or do you just balance the chassis plate by itself? Also do you ever add weight to get the desired results or do you get it as close as possible with the electronics alone?

With thses new 2.4 receivers balance seems to be getting harder to achieve...
march to my own is offline  
Reply With Quote
Old 08-13-2008, 09:55 AM
  #5294  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,841
Trader Rating: 13 (100%+)
Default

Originally Posted by march to my own View Post
Jason,

Sorry, I know you have been asked this question a million times.

What are thoughts on balancing these cars out? Do you take into consideration the unsprung weight on the pod or do you just balance the chassis plate by itself? Also do you ever add weight to get the desired results or do you get it as close as possible with the electronics alone?

With thses new 2.4 receivers balance seems to be getting harder to achieve...
Hey Buddy,

I balance the car with the pod detached. The pod is a stationary part of the car that never pivots. Unless something pivots and exposes a balance issue, then that area will not benefit from being balanced. There will only be lateral weight shift parallel to the ground. The only reason that i made the pod to be centered with a brushed motor is because of the gyro effect created by the large, heavy armature. The small brushless rotors do not have much of this. This is why i decided to make sure the brushed armature was centered so that there is no torque steer. The slight bit that a brushless rotor is off center and minimal gyro effect have little to no effect on torques steer.

Balancing our cars is getting very difficult. The super light receivers and heavy speed controls for brushless does make this difficult task. I try to achieve balance without adding weight. Most often it happens.
protc3 is offline  
Reply With Quote
Old 08-13-2008, 09:58 AM
  #5295  
Tech Regular
 
#88driver's Avatar
 
Join Date: Apr 2008
Location: Jonesboro, Arkansas
Posts: 482
Default

What will a harder and softer spring do to handling?
Also what will heavier and lighter shock oil do?

Sorry i know you have probably been asked this a million times.
#88driver is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Terms of Service