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OS Speed B21 Adam Drake engine.

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Old 03-07-2018, 11:53 AM
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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.
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Adam
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Old 03-07-2018, 07:18 PM
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I got mine waiting to get ebis’d this weekend. Can’t wait to try it out!
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Old 03-19-2018, 07:31 PM
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Adam what pipe combo would you recommend in truggy? Thanks...
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Old 03-20-2018, 09:29 AM
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O.S. 2090 pipe and 85mm header.
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Old 03-20-2018, 01:22 PM
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Thanks Adam nice video....
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Old 03-20-2018, 01:42 PM
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Thank you!
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Old 03-21-2018, 03:06 PM
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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...
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Old 03-27-2018, 10:58 AM
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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.
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Old 03-27-2018, 11:55 AM
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Seems like the 85MM headers are in short supply....I have one on backorder @ Amainhobbies and Tower Hobbies is also on back order
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Old 03-27-2018, 01:50 PM
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Yes, it's a popular item at the moment.
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Old 03-27-2018, 09:42 PM
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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?
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Old 03-28-2018, 10:03 PM
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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
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Old 03-29-2018, 03:03 PM
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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.
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Old 03-29-2018, 05:50 PM
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Thanks for quick response
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Old 04-17-2018, 08:25 AM
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how do you measure the OS manifold length? TIA
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