BMI's DB12R

Reply

Old 01-16-2008, 05:59 PM
  #3796  
Tech Elite
iTrader: (16)
 
Slapmaster6000's Avatar
 
Join Date: Sep 2004
Location: Edmonds, Wash.
Posts: 3,068
Trader Rating: 16 (100%+)
Default

I bought a $19 servo from JR that weighs 9g, transit about .15 sec @ 22 ou. It makes the Spectrum Mirco look..... large. So far, it works fine. I just picked up the new motor, a Castle Creation 5.4kv. I will try to take some pic's later of my progress.

Jason, I have no doubt that sticking to asphalt is going to be harder then carpet without the weight..... but I say..... let try it!
Slapmaster6000 is offline  
Reply With Quote
Old 01-16-2008, 06:30 PM
  #3797  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,843
Trader Rating: 13 (100%+)
Default

Ok, I will see about getting a forum started on the website.

As for trying this whole test process out, i say lets do it. I will make a prototype car with all of the possible remedies i can think of to correct the suspension to work with the lighter weight in the pod. I am not as concerned about the chassis balance becauce that can always be compensated for being that the majority of the weight is in the rear anyway.

I will be releasing my DB10R immediately following the snowbirds and then it will be off to the test labs again. Oh the time i spent in there with the DB12R rear suspension. Im going back too soon.
protc3 is offline  
Reply With Quote
Old 01-16-2008, 06:34 PM
  #3798  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,843
Trader Rating: 13 (100%+)
Default

Damn it, now i need to hunt down a little brushless motor and little speedo. I will order the lipo this week. What do you guys want to see,1 or 2 cell?
protc3 is offline  
Reply With Quote
Old 01-16-2008, 07:03 PM
  #3799  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Originally Posted by Slapmaster6000 View Post
Jason, I have no doubt that sticking to asphalt is going to be harder then carpet without the weight..... but I say..... let try it!
it may take softer tires and softer springs...but I think in the end it can work
InspGadgt is offline  
Reply With Quote
Old 01-16-2008, 07:07 PM
  #3800  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,952
Trader Rating: 6 (100%+)
Default

I guess I'm the only one that likes using the same type of motors in both my TC and 1/12 car? I see the future need for a lipo layout in the 1/12 cars but not necessarily a smaller motor that can only be used in a 1/12 car. just an opinion
Matt Howard is offline  
Reply With Quote
Old 01-16-2008, 07:08 PM
  #3801  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Originally Posted by protc3 View Post
Damn it, now i need to hunt down a little brushless motor and little speedo. I will order the lipo this week. What do you guys want to see,1 or 2 cell?
Heck we could probably get away with using 1/18th packs even but let's not get too crazy

Personally I think 2 cell is the way to go for a few reasons...first off being the weight issue we've all been discussing, next is that it will make it easier for guys running 1/10th classes to run 1/12th as well as the packs would be the same, lastly at 1 cell we'll need to run a reciever pack (ugh!) where 2 cell will not have that issue even up into mod classes.
InspGadgt is offline  
Reply With Quote
Old 01-16-2008, 07:13 PM
  #3802  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Originally Posted by Matt Howard View Post
I guess I'm the only one that likes using the same type of motors in both my TC and 1/12 car? I see the future need for a lipo layout in the 1/12 cars but not necessarily a smaller motor that can only be used in a 1/12 car. just an opinion
I'll be happy either way. I like the idea of the smaller motor because I think we'll be able to do more with the cars with the additional room it will give. Either way something is not going to carry over from 1/10th to 1/12th. Same size motors and the batteries are likely to be different. Same sized batteries and the motors are likely to be different.
InspGadgt is offline  
Reply With Quote
Old 01-16-2008, 07:16 PM
  #3803  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,952
Trader Rating: 6 (100%+)
Default

Originally Posted by InspGadgt View Post
I'll be happy either way. I like the idea of the smaller motor because I think we'll be able to do more with the cars with the additional room it will give. Either way something is not going to carry over from 1/10th to 1/12th. Same size motors and the batteries are likely to be different. Same sized batteries and the motors are likely to be different.
I don't think there's any way your going to fit a lipo pack designed for a 1/10 car into a 1/12 car, way too big. Somethings gotta happen though cause I don't see nimh being around for our use in a couple of years
Matt Howard is offline  
Reply With Quote
Old 01-16-2008, 07:39 PM
  #3804  
Tech Champion
 
Mason's Avatar
 
Join Date: Oct 2004
Location: Ocala, Florida
Posts: 5,044
Default

the orion packs range from 3200 to 4800?? and are the same size give or take half a millimeter. They aren't using up the whole pack, so one really wonders if that 3200 will get down to. They only need to shape it to 23 high, ~93 long, and i'm measuring 49.xx on my db12r and then it would fit the majority of cars for touring and/or the oval guys might like this size as well. The cells can be made.
hell the max amps 4K mAh saddle pack is nearly 2 oz lighter than my fresh EP4600s.

jason is right about being too light. then you must consider all the tires in your box. will it be soft enough.. things to think about.
Mason is offline  
Reply With Quote
Old 01-16-2008, 08:04 PM
  #3805  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Originally Posted by Matt Howard View Post
I don't think there's any way your going to fit a lipo pack designed for a 1/10 car into a 1/12 car, way too big. Somethings gotta happen though cause I don't see nimh being around for our use in a couple of years
1/12th for many years was 6 cell for outdoor pavement racing. Not to mention how much room will be gained by the smaller pod for the smaller motor. Might have to do it with a saddle pack but it should be doable.
InspGadgt is offline  
Reply With Quote
Old 01-16-2008, 08:07 PM
  #3806  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,952
Trader Rating: 6 (100%+)
Default

Originally Posted by InspGadgt View Post
1/12th for many years was 6 cell for outdoor pavement racing. Not to mention how much room will be gained by the smaller pod for the smaller motor. Might have to do it with a saddle pack but it should be doable.
I know, I tried 6 cell with a stock motor "back in the day" and even back then it was borderline uncontrollable. I just don't want to "blow up" the conventional designs of 1/12 cars apart from making them somehow lipo (1 cell) friendly
Matt Howard is offline  
Reply With Quote
Old 01-16-2008, 08:09 PM
  #3807  
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,192
Default

Originally Posted by Mason View Post
jason is right about being too light. then you must consider all the tires in your box. will it be soft enough.. things to think about.
That may prove to be true. But if it does work it can lower the cost of racing for the class to to mention the possibilities that can open up from it in terms of body design and chassis design. That makes it at least worth a serious investigation for the betterment of the hobby.
InspGadgt is offline  
Reply With Quote
Old 01-16-2008, 08:15 PM
  #3808  
Tech Champion
iTrader: (245)
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,216
Trader Rating: 245 (100%+)
Default

Originally Posted by InspGadgt View Post
We tested mounting the wing on the pod vs mounting a wing to the rear body posts and had some interesting results. In the end the idea was abandond for us due to it not being as durable and the pain in the butt it was to mount to the body post like that.
In 1/10 pan ALL my wings were mounted directly to the pod. Some bodies had a built in aerofoil (like the Nissan) but my preference was the Jag (XJR10? McAlister?) with a nice big wing hung from the top pod plate sticking out from behind.
Scottrik is offline  
Reply With Quote
Old 01-16-2008, 08:40 PM
  #3809  
Tech Elite
iTrader: (16)
 
Slapmaster6000's Avatar
 
Join Date: Sep 2004
Location: Edmonds, Wash.
Posts: 3,068
Trader Rating: 16 (100%+)
Default

OK, I just got a new computer and I am struggling to down size the photos... so bare with me.
Slapmaster6000 is offline  
Reply With Quote
Old 01-16-2008, 08:46 PM
  #3810  
Tech Champion
iTrader: (245)
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,216
Trader Rating: 245 (100%+)
Default

Sorry Brian--you're a handsome enough fellow, but I make it a rule never to "bare" with guys.
Scottrik is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Terms of Service