Go Back  R/C Tech Forums > General Forums > Nitro Off-Road > Offroad Nitro Engine Forum
OS Speed B21 Adam Drake engine. >

OS Speed B21 Adam Drake engine.

Like Tree15Likes

OS Speed B21 Adam Drake engine.

Old 03-07-2018, 10:53 AM
  #1  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default OS Speed B21 Adam Drake engine.

Let me know if you have any questions or comments on the new O.S. Speed B21 Adam Drake engine.
Thanks,
Adam
Adam Drake is offline  
Old 03-07-2018, 06:18 PM
  #2  
Tech Master
iTrader: (90)
 
Join Date: Dec 2010
Location: Sonora, California
Posts: 1,324
Trader Rating: 90 (100%+)
Default

I got mine waiting to get ebis’d this weekend. Can’t wait to try it out!
b121774 is offline  
Old 03-19-2018, 06:31 PM
  #3  
Tech Regular
 
Join Date: Aug 2011
Posts: 352
Default

Adam what pipe combo would you recommend in truggy? Thanks...
Whitey_Wangster is offline  
Old 03-20-2018, 08:29 AM
  #4  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default

O.S. 2090 pipe and 85mm header.
Adam Drake is offline  
Old 03-20-2018, 12:22 PM
  #5  
Tech Regular
 
Join Date: Aug 2011
Posts: 352
Default

Thanks Adam nice video....
Whitey_Wangster is offline  
Old 03-20-2018, 12:42 PM
  #6  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default

Thank you!
Adam Drake is offline  
Old 03-21-2018, 02:06 PM
  #7  
Tech Regular
 
Join Date: Aug 2011
Posts: 352
Default

Hey Adam what's the part number for the combo? Also if you order the 2090 pipe separate is the manifold that comes with he pipe an 85mm?
Thanks...
Whitey_Wangster is offline  
Old 03-27-2018, 09:58 AM
  #8  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default

The combo isn't currently available from www.towerhobbies.com I believe the first batch of combos sold out and they only received the engines. Engine part # OSMG2066. T-2090SC Tuned Pipe Set part #OSMG2953. I think the 2090 from Tower Hobbies includes the 75mm head. I'll try to confirm this.
Adam Drake is offline  
Old 03-27-2018, 10:55 AM
  #9  
Tech Master
iTrader: (63)
 
sugelle's Avatar
 
Join Date: Aug 2008
Location: O'Fallon, MO
Posts: 1,161
Trader Rating: 63 (100%+)
Default

Seems like the 85MM headers are in short supply....I have one on backorder @ Amainhobbies and Tower Hobbies is also on back order
sugelle is offline  
Old 03-27-2018, 12:50 PM
  #10  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default

Yes, it's a popular item at the moment.
stanleyw808 likes this.
Adam Drake is offline  
Old 03-27-2018, 08:42 PM
  #11  
Tech Master
iTrader: (63)
 
sugelle's Avatar
 
Join Date: Aug 2008
Location: O'Fallon, MO
Posts: 1,161
Trader Rating: 63 (100%+)
Default

Adam.... my engine arrives tomorrow, excited to get it in my tki4. Question for you.....what’s the difference between the gold color p3 glow plug that comes with your signature engine and the regular p3 plug? Any issue using the regular ones in this engine?
sugelle is offline  
Old 03-28-2018, 09:03 PM
  #12  
Tech Fanatic
iTrader: (11)
 
Join Date: Jun 2006
Posts: 751
Trader Rating: 11 (100%+)
Thumbs up Needle setting

Hi Adam, do u have a race tune Video or measurements for all 3 needle setting for the B21 AD. I just bought 2 unit, going to start running in maybe this weekend, thanks
ck960 is offline  
Old 03-29-2018, 02:03 PM
  #13  
Tech Adept
Thread Starter
 
Adam Drake's Avatar
 
Join Date: Oct 2004
Location: Beaumont, CA
Posts: 173
Default

It's not a huge difference, but the P3 plug seems to be slightly crisper on bottom and a little more durable.

B21AD settings:
LSN: .45mm in from flush
MID: .1mm in from flush.
HSN: 1.35mm in from flush.
Idle: .5mm idle gap.
skrichter and stanleyw808 like this.
Adam Drake is offline  
Old 03-29-2018, 04:50 PM
  #14  
Tech Fanatic
iTrader: (11)
 
Join Date: Jun 2006
Posts: 751
Trader Rating: 11 (100%+)
Default

Thanks for quick response
ck960 is offline  
Old 04-17-2018, 07:25 AM
  #15  
Tech Addict
 
tim powers's Avatar
 
Join Date: Sep 2004
Location: east islip, NY
Posts: 633
Default

how do you measure the OS manifold length? TIA
tim powers is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.