R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 10-18-2009, 09:48 PM   #7981
avs
Tech Master
 
avs's Avatar
 
Join Date: Jul 2006
Posts: 1,175
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by InspGadgt View Post
Apparently not all of them...I bought a set of blue and a set of the newer gold thinking if I was wrong on the golds the blues should be ok...nope...these are 100 degree as well.
i rummaged thru my box of 8/32 screws, which i think were all from AE packaging. the blue ones and the greenish yellow (old gold?) were 100 degree. the only 82 degree screws were some silver ones. the IRS screws are a darker grey and also look to be 82 degrees.
avs is offline   Reply With Quote
Old 10-18-2009, 10:27 PM   #7982
Tech Regular
 
Join Date: Nov 2008
Location: Garner, NC
Posts: 402
Default

Quote:
Originally Posted by InspGadgt View Post
OK so which 8-32nd screws are 80 degree heads? I need some shorter ones then the IRS and don't feel like cutting them down. I ordered a couple AE ones knowing some are 100 and some are 80 and ended up with both as 100.
Lunsford sells titanium scews for the front end in 3 different lengths for around $7 for 4 screws and Fastener Express sells the screws in bulk amounts in both 100 and 82 degree in about 4 different lengths and different colors too. I have been using the Lunsford ones for a while now, they are a hex socket instead of a philips... no stripping!
avink007 is offline   Reply With Quote
Old 10-18-2009, 11:51 PM   #7983
Tech Addict
 
Join Date: Oct 2008
Location: Spokane, WA
Posts: 511
Trader Rating: 44 (100%+)
Default

Where is everyone sourcing parts? It seems neither Ampdraw or Stormer are supporting this brand any longer???
biz77 is offline   Reply With Quote
Old 10-19-2009, 03:50 AM   #7984
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,829
Trader Rating: 13 (100%+)
Default

Stormer has an order on the way to them. I dont sell to ampdraw any more.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 10-19-2009, 09:46 PM   #7985
Tech Regular
 
Join Date: Nov 2008
Location: Garner, NC
Posts: 402
Default

Quote:
Originally Posted by biz77 View Post
Where is everyone sourcing parts? It seems neither Ampdraw or Stormer are supporting this brand any longer???
you can always go through the bmi site directly, no problems there!
avink007 is offline   Reply With Quote
Old 10-20-2009, 01:13 AM   #7986
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,177
Default

Jason, Can you get the IRS ones in different lengths? That would be cool if possible.
InspGadgt is offline   Reply With Quote
Old 10-20-2009, 05:20 AM   #7987
Tech Rookie
 
Join Date: Dec 2008
Location: from Japan
Posts: 3
Default

Quote:
Originally Posted by protc3 View Post
Going to a thicker side dampening will reduce double steer to the point it is not noticable. I am working on some new flex plates that should be available within the next 2 weeks that really help with this also.
Hi Jason,
You don't have DB3015R Flex Plate Thin G10?
(I can't find one on your web site)
DB3015R change to new flex plate?
abak is offline   Reply With Quote
Old 10-20-2009, 11:44 AM   #7988
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,177
Default

The website is www.bmiracing.com

The flex plates are:
DB3010R - Standard flex plate for DB12RR
DB3015R - Thin flex plate for DB12RR

No part number yet for the new flex plate that Jason mentioned...at least that I can see on the website.
InspGadgt is offline   Reply With Quote
Old 10-20-2009, 01:58 PM   #7989
Moderator
 
Clegg's Avatar
 
Join Date: Jan 2004
Location: Outside doing things in places... Denver, CO
Posts: 4,609
Trader Rating: 9 (100%+)
Default

So I am going through the car tonight to do some low level ballancing of it. I have 4 pocket scales and a level surface. I setup the car as I would on race day, making sure ride height is correct, etc... Also using newly trued tires front and back so they are equal side to side.


From initial testing the car looks like: - without body
As if you are looking at it from the front)
LF: 150 RF: 143
LR: 182 RR: 210
L: 332 R: 353
(in gm)

(edit - ignore these weights, I found the 5$ scales are a bit touchy and need to have the weight directly over the pressure measurement post... so I am re-doing some tests and looks like I am within a few gm side to side)

I am also noticing the car doesnt recenter properly, if I push down on a corner, it holds that stance and leaves more weight on the corner that was pushed down, Front and rear. This is with the damper tubes disconnected.

The rear weight difference confuses me. The right side of the car is the one with the power wires for the batt, the ESC, switches, etc... as you can see the right front is light and the right rear is heavy. Not sure where to put weight to solve this.

What should the weight distribution be on a 1/12th, side to side, cross, F/R. Any help would be appreciated.
__________________
Joe Kelly - JK720.net
5280 Raceway |5280raceway.com | 5280 Raceway Facebook

Last edited by Clegg; 10-20-2009 at 09:14 PM.
Clegg is offline   Reply With Quote
Old 10-20-2009, 03:19 PM   #7990
Tech Adept
 
Join Date: Jan 2009
Posts: 130
Default

I may have asked this before, but I am still unsure. I am running the DB12RR in modified class. We can use Lipo or NiMh cells. My question is can Lipo keep up with the 4 cell set-up? Would I need a lower turn motor to keep up? and should I use a step-up module or receiver pack?

Thanks
__________________
Corally PHI/PHI 09 TEAM DRIVER
BMI DB12RR TEAM DRIVER
TOP
LRP TC SXX, LRP SXX Ver. 2, LRP X12 Octa, Futaba 3PKS Spektrum Module, Protform.
SOUTH AFRICA :)
PHI/BMI racer is offline   Reply With Quote
Old 10-20-2009, 06:01 PM   #7991
Tech Elite
 
mike ivy's Avatar
 
Join Date: Feb 2002
Location: Comin at ya from a distant galaxy
Posts: 2,792
Trader Rating: 50 (100%+)
Default

Hey PHI/BMI Racer,

For Mod I would use a receiver pack

Hope this helps
Mike
__________________
[-eXpress motorsports-] [-TQ Wire-]

1/12th Fo' Life!!! R.I.P Mike Reedy, R.I.P John Williams

[-Horsham RC-] [-Jackson RC-] [-RC Car World-] [ Black Out Free 2015 ]
mike ivy is offline   Reply With Quote
Old 10-20-2009, 08:26 PM   #7992
Tech Elite
 
SpraydbySprague's Avatar
 
Join Date: Jun 2008
Location: Conducting aggressive board meetings at my local track
Posts: 3,301
Trader Rating: 64 (100%+)
Default

Quote:
Originally Posted by Clegg View Post
I am also noticing the car doesnt recenter properly, if I push down on a corner, it holds that stance and leaves more weight on the corner that was pushed down, Front and rear. This is with the damper tubes disconnected.

Check for any binding in all of the suspension, front and rear. Any binding may be the culprit in not allowing the chassis to return to center.
__________________
How would I describe my holeshots?

Three words...

Ready... Steady... Confetti!!!! (gonna need a new one of those)
SpraydbySprague is offline   Reply With Quote
Old 10-20-2009, 08:43 PM   #7993
Tech Regular
 
MaxSp97's Avatar
 
Join Date: Aug 2007
Location: Camarino
Posts: 457
Trader Rating: 5 (100%+)
Default

Jason,
Could you make the battery holder for 1S Lipo?
I used Thunder power battery. This helps the battery stay in place.
I did this to mine 10RR and 12RR/Lipo chassis.
Attached Thumbnails
BMI's DB12R-dsc00560.jpg   BMI's DB12R-dsc00569.jpg   BMI's DB12R-dsc00568.jpg  
__________________
Calvin. L
JOY IS IMPATIENT...
COTA Home Of The F1 US Grand Prix

Last edited by MaxSp97; 10-21-2009 at 06:00 PM. Reason: pictures added
MaxSp97 is offline   Reply With Quote
Old 10-20-2009, 09:13 PM   #7994
Moderator
 
Clegg's Avatar
 
Join Date: Jan 2004
Location: Outside doing things in places... Denver, CO
Posts: 4,609
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by MaxSp97 View Post
Jason,
Could you make the battery holder for 1S Lipo?
I used Thunder power battery. This is help the battery in place.
I did this to mine 10RR and 12RR/Lipo chassis.
Sorry for the picture is not clear.
You did that on a 10R chassis? could you post a pic? ( I know wrong forum... but this is one of the only things keeping me from buying a 10R. I hate the idea of the weighted battery tray.
__________________
Joe Kelly - JK720.net
5280 Raceway |5280raceway.com | 5280 Raceway Facebook
Clegg is offline   Reply With Quote
Old 10-20-2009, 10:24 PM   #7995
Tech Regular
 
MaxSp97's Avatar
 
Join Date: Aug 2007
Location: Camarino
Posts: 457
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by Clegg View Post
You did that on a 10R chassis? could you post a pic? ( I know wrong forum... but this is one of the only things keeping me from buying a 10R. I hate the idea of the weighted battery tray.
I will post the picture 2morrow.
__________________
Calvin. L
JOY IS IMPATIENT...
COTA Home Of The F1 US Grand Prix
MaxSp97 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
NEW IN BOX BMI DB12R bigb11 R/C Items: For Sale/Trade 47 10-09-2008 04:36 PM
-BMI DB12R- joey R/C Items: For Sale/Trade 11 05-18-2008 09:25 PM
BMI DB12R wallstreet R/C Items: For Sale/Trade 17 02-15-2008 05:04 PM
BMI DB12R D-Bizzle R/C Items: For Sale/Trade 2 12-21-2007 03:48 PM
WTB BMI DB12R chris moore R/C Items: Wanted to Buy 8 06-29-2007 06:25 PM



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 01:55 AM.


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