BMI's DB12R

Old 04-26-2008, 03:23 PM
  #4651  
Tech Elite
iTrader: (51)
 
mike ivy's Avatar
 
Join Date: Feb 2002
Location: Comin at ya from a distant galaxy
Posts: 2,920
Trader Rating: 51 (100%+)
Default

Hey Jason ygpm bro
mike ivy is offline  
Old 04-26-2008, 03:42 PM
  #4652  
Tech Addict
 
Ferrarimk13's Avatar
 
Join Date: Jan 2008
Location: Staten Island, New York
Posts: 630
Default

Originally Posted by protc3
Thats funny. I am kinda embarrassed to say that i have never checked the tires against eachother. I just always cut them. Now that im running asphalt again i have been running them larger but still cutting them. Old habbit i guess.
how low do you guys run your tires?! also, how many spacers should i run in front, i have one larger one, and also one smaller one, but the front seems too high for me.
Ferrarimk13 is offline  
Old 04-26-2008, 03:47 PM
  #4653  
Tech Addict
iTrader: (4)
 
GreaseMonkey's Avatar
 
Join Date: Apr 2006
Location: Ottawa, Canada
Posts: 552
Trader Rating: 4 (100%+)
Default

For club racing I'll start with 46mm front and 48mm rear tyres.

You should have to add more shims to get down to 3-3.5mm ride height. I think the shims included only get you as low as the regular AE lower arms.
GreaseMonkey is offline  
Old 04-26-2008, 03:49 PM
  #4654  
Tech Addict
 
Ferrarimk13's Avatar
 
Join Date: Jan 2008
Location: Staten Island, New York
Posts: 630
Default

hm, i see, so which ones should i buy? aluminum?
Ferrarimk13 is offline  
Old 04-26-2008, 04:13 PM
  #4655  
Tech Elite
iTrader: (11)
 
RCSteve93's Avatar
 
Join Date: Dec 2005
Location: Long Island, New York
Posts: 4,601
Trader Rating: 11 (100%+)
Default

Originally Posted by Ferrarimk13
haha, yeah, my hobby store owner said it would be no problem for him to true them for me, but if possible, i wouldnt want to bother him more than it is. I do have the prisms, and i noticed when i got them, they were pretty close to race size, and looked fairly close in diameter, i might check em, when i go upstairs.
You race at 360? If you do, let me know. I can true your tires for you or I can show you how, if you don't know and you can borrow mine. It is real important to true your tires. The Jacos are pre-trued, but I noticed there are flat spots from sitting in the box and the pairs arent equal. It is better to true them anyway.
RCSteve93 is offline  
Old 04-26-2008, 04:16 PM
  #4656  
Tech Elite
iTrader: (11)
 
RCSteve93's Avatar
 
Join Date: Dec 2005
Location: Long Island, New York
Posts: 4,601
Trader Rating: 11 (100%+)
Default

Originally Posted by Ferrarimk13
hm, i see, so which ones should i buy? aluminum?
Use the included IRS ones and then get the thin CRC ones to be real precise. BMI also sells one piece ones in .5mm increments. 360 sells them.

By the way, Jason. Are you sending those big springs to 360? I want to try a set.
RCSteve93 is offline  
Old 04-26-2008, 04:39 PM
  #4657  
Tech Champion
iTrader: (261)
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,380
Trader Rating: 261 (100%+)
Default

I start right about where the Prisms start...48mm rear and 45mm front. With Jason's new "lowered" lowered rear plates and the IRS front arms you really can run 'em until you see white. I don't generally go QUITE that far, but I know a couple people who I'd SWEAR are running on the contact cement that holds the foam to the wheel.

Once they get to about 44R/42F or so I like to put 'em aside until the next big event.
Scottrik is offline  
Old 04-26-2008, 04:42 PM
  #4658  
Tech Elite
iTrader: (11)
 
RCSteve93's Avatar
 
Join Date: Dec 2005
Location: Long Island, New York
Posts: 4,601
Trader Rating: 11 (100%+)
Default

Originally Posted by Scottrik
I start right about where the Prisms start...48mm rear and 45mm front. With Jason's new "lowered" lowered rear plates and the IRS front arms you really can run 'em until you see white. I don't generally go QUITE that far, but I know a couple people who I'd SWEAR are running on the contact cement that holds the foam to the wheel.
I tried that yesterday in practice. I had an old set I could true down to 1mm of foam on the wheel and get 3mm ride height. I tried it and I had no grip. I think 2mm of foam is the lowest you can go without hitting the glue.
RCSteve93 is offline  
Old 04-26-2008, 04:46 PM
  #4659  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,867
Trader Rating: 13 (100%+)
Default

Originally Posted by RCSteve93
Use the included IRS ones and then get the thin CRC ones to be real precise. BMI also sells one piece ones in .5mm increments. 360 sells them.

By the way, Jason. Are you sending those big springs to 360? I want to try a set.

Hey buddy,

Have sal give me a buzz. He hasnt ordered them from me yet. THese front springs really are a must have. They keep the car extremely flat and carry a ton of cornerspeed. They also do not collapse. We preset them to there size while being made. One set will last you until you lose them
protc3 is offline  
Old 04-26-2008, 05:07 PM
  #4660  
Tech Master
iTrader: (10)
 
Join Date: Feb 2004
Posts: 1,131
Trader Rating: 10 (92%+)
Default

Thanks Jason for the extremely fast shipping!
Johnny Carey is offline  
Old 04-26-2008, 05:08 PM
  #4661  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,867
Trader Rating: 13 (100%+)
Default

Not a problem buddy
protc3 is offline  
Old 04-26-2008, 05:13 PM
  #4662  
Tech Adept
 
Join Date: Aug 2007
Posts: 234
Default

Originally Posted by protc3
Hey buddy,

Have sal give me a buzz. He hasnt ordered them from me yet. THese front springs really are a must have. They keep the car extremely flat and carry a ton of cornerspeed. They also do not collapse. We preset them to there size while being made. One set will last you until you lose them
Jason,

What is going on with these new springs that eveyone has been talking about? What is different about them? What spring rates to they come in?

Thanks,

Jeremy
Jeremy Otis is offline  
Old 04-26-2008, 05:24 PM
  #4663  
Tech Lord
iTrader: (13)
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,867
Trader Rating: 13 (100%+)
Default

Hey Jeremy,

What we did was make a larger diameter linear spring for the front end of 1/12th and 1/10th pancars that will never collapse.

This helps make the front of the car roll more evenly with the rear. A big annoying problem in 1/12th cars is doublesteer or push. This is caused by the chassis toucking down in the corners. For so long we have been trying to make the chassis more narrow to solve this. We were attacking the wrong issue. Thinning the chassis more did not help. What we needed to do is let the lateral weight transfer be absorbed by all 4 corners of the chassis as opposed to mostly just the rear. Being that the weight transfer in the corner is now being absorbed over a larger area, the car overall stays flatter and the chassis will not touch down. This will increase cornerspeed,transition speed and also eliminate the doublesteer or push.

The springs do feel softer than the AE springs when you compress the front with your hand. You will find the car doesnt bottom out like you would expect though. Overall, it helps to give a balanced feel to the car and increase performance drasticlly. The springs are available in .020, .022, and .024. I may try .018 but i think they may be a little soft. Let me know if you would like any more info buddy.
protc3 is offline  
Old 04-26-2008, 05:42 PM
  #4664  
Tech Master
iTrader: (13)
 
Join Date: Jan 2007
Posts: 1,081
Trader Rating: 13 (100%+)
Default

new pieces look sweet J cant wait to get them
and are you guys still trying lipos in your 12th car?

Last edited by punkracer24; 04-26-2008 at 05:43 PM. Reason: nn
punkracer24 is offline  
Old 04-26-2008, 06:19 PM
  #4665  
Tech Adept
 
Join Date: Aug 2007
Posts: 234
Default

O.K. ya sold me!

Now here is my next question. Are you guys still running dampening lube on the kingpins with the new springs?

Where can I get these? Your sight is down.

Keep up the great work Jason. Everyone I have talked to who runs your stuff says you are a great guy. They say you are very passionate about R&D.

I see your team is begining to place very high at the latest batch of major events!

Keep it rolling man.

Jeremy
Jeremy Otis is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.