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#OS1CJ00 - O.S. SPEED B21 Adam Drake 3 Off-Road
What our customers say
A selection of recent five-star reviews from Trustpilot, as written.
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★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
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★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
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★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
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★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
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★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
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★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
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★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
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★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
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★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
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★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
Key Specs
About this product
O.S. SPEED B21 Adam Drake Edition 3 is developed in collaboration with O.S. international team driver ADAM DRAKE, who is famous for his deep knowledge and sound technical advice.
By adopting a boost bypass processing for the crankcase, the engine runs more smoothly, and making it even easier to drive. ADAM DRAKE’s image color, blue anodized aluminum is applied to the cutting part of the new outer head, and two-color anodized aluminum with new design is used to reduce weight and lower the center of gravity and improve driving performance. You can make a choice of two different carburetor restrictor, 6.5II for buggy and 7.5 mainly for truggy.
Features:
Newly designed cooling head; 3mm lower height for low gravity and 14g lighter. Black/blue double anodized head
Back plate with steel lining like B2104 for friction resistance
New crankcase inner design for linear power transition from low–middle–high speed
Combo set is 75mm manifold with TB02 (T-2090) silencer for snappy low-middle range power
Glow plug is OS SPEED P3 GOLD
Specs:
Displacement: 3.49cc
Bore: 16.4mm
Stroke: 16.55mm
Output: 2.65ps / 2.61hp @ 34.000RPM
Practical RPM range: 4.000-42.000
Engine Weight: 350g
Frequently Asked Questions
The O.S. SPEED B21 is designed for experienced nitro enthusiasts. Nitro engines require tuning knowledge, proper fuel mixing, and regular maintenance, so it's not recommended for complete beginners to RC.
The engine comes with a TB02 silencer (75mm manifold), an OS SPEED P3 GOLD glow plug, and your choice of two different carburettor restrictors (6.5II for buggy or 7.5 mainly for truggy).
This is a 3.49cc nitro buggy engine designed to fit standard buggy platforms. Check your chassis manual to confirm it accepts this engine displacement, as compatibility depends on your specific model.
The redesigned crankcase provides smoother power delivery across all RPM ranges, whilst the new lightweight blue-anodised aluminium head is 3mm lower and 14g lighter, lowering the centre of gravity for improved handling.
Yes, you'll need to source nitro fuel separately and will require a glow plug igniter to start the engine. Check the product manual for specific fuel recommendations and charger compatibility details.
