KST BLS805X HV Brushless Digital Tail Servo 7.5Kgf.cm 0.039sec for Heli 550-700
£69.99 Inc. VAT
High-speed, brushless HV tail servo with 760ฮผs/560Hz inputโperfect for 550โ700 size helis needing fast, precise tail control.
In stock|Next shipping: 24/02/2026
Standard Size Servo For 550-700 Class Helicopter Tail
The KST BLS805X HV Tail Servo is engineered for high-speed, high-precision performance, making it an ideal choice for 3D helicopter pilots flying models in the 550 to 700 class. Built around a high-voltage brushless motor, it delivers lightning-fast response with a pulse speed of just 0.039 sec/60ยฐ at 8.4V, giving you sharp, confident tail authority even in the most aggressive maneuvers.
Housed in a robust CNC-machined aluminium case, and equipped with durable steel gears and dual ball bearings, the BLS805X is designed for long-term reliability and resistance to heat and vibration. It runs on 760ฮผs / 560Hz, so be sure your gyro system supports this narrow-pulse, high-frequency specification.
Key Features
- Blazing-fast speed: 0.039 sec/60ยฐ @ 8.4V
- Solid torque: Up to 7.5 kgยทcm
- High-voltage compatible: 6.0V โ 8.4V
- Optimized for tail use: 760ฮผs / 560Hz pulse input
- All-metal housing: CNC aluminum for durability and cooling
- Brushless motor: Smooth, efficient operation with longer life
- Perfect for: 550โ700 size helicopters
- Item:ย BLS805X HV Brushless Tail Servo
- Operating Voltage: DC6.0V-8.4V
- Dimension: 40.5mm*20mm*38mmยฑ0.2mm
- Torque: 5.5Kgf.cm@6.0V,ย 6.5Kgf.cm@7 .4V,ย 7. 5Kgf.cm@8.4V
- Speed: 0.048sec/60ยฐ @6.0V,ย ย 0.042sec/60ยฐ@7.4V,ย ย 0.039sec/60ยฐ@8.4V
- Temperature Range: -10โโฆโฆ+65โ
- Weight: 70gยฑ10%
- Working Frequency: 760ฮผs/560Hz
- Case Material: Aluminium Alloy
- Motor Type: Brushless DC Motor
- Position Sensor: Potentiometer
- Ball Bearing: 2BB
Included:
- 1 * BLS805X HV Servo
- 5ย *ย Plasticย Servoย Horn
- 1ย *ย Servoย Hornย Screw
- 4 * Rubberย Grommet
- 4ย *ย Eyelet
- 4ย *ย Mountingย Screw
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SHIPPING & DELIVERY
We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the size/weightย and shipment location. We process orders Monday to Friday and pride ourselves on our quick turnaround of orders - most UK orders will arrive the next day.
We are partnered with several delivery companiesย including Royal Mail, DHL, UPS and Parcel Force. If you have a special delivery requirement or would like to arrange a shop collection pleaseย contact us.
A confirmation email will be sent when your order has been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.
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Shipping to the UK
- Order before 4PM for same day dispatch with Royal Mail, 2PM for next day delivery with DHL and 1PM for next day delivery with APC.
- We offer FREE Shipping on UK orders over ยฃ99, weighing less than 1kg.
- The courier options deliver Monday to Friday, Royal Mail delivers to residential addresses on Monday to Saturday.
For small low value orders our cheapest delivery service is Royal Mail First Class.ย For a guaranteed next day delivery we recommendย Royal Mail Special Delivery orย one of our courier delivery options.
International Postage
- Order before 4PM for same day dispatch with Royal Mail.
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- DHL Express offersย NEXT DAY delivery to most Europeanย destinationsย and a very fast delivery for countries further afield, generally 2-3 days.
Orders shipped outside the EU may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.
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