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FAQ: Frequently Asked Questions and Answers
Customer Service Technician
Here at HPI Racing UK there is a dedicated team of Customer Service Technicians at the end of a telephone, to take care of your warranty and technical needs, no matter how big or small.

If you require any assistance please contact the Customer Service Team by typing in your question below or contact us by calling 0845 00 66 160 or if you prefer not to use our 0845 number, you can also call us on (01283) 226570. (Standard office hours are 8:30-17:00 Monday to Friday)
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Please type your question above. You will get a set of suggested answers based on our support FAQ immediately. If these answers do not help you, or we are unable to find any relevant answers based on your question, you can send your support request with more details to one of our Customer Service Technicians. You will then get an individual response within 2 working days.
Ket word results
The following 4 questions match the keyword NITRO

A glow plug igniter is a battery-powered spring-loaded tube that fits over the glow plug of an engine to heat up the glow plug until it is red-hot (usually 2-3 seconds is all it takes). With fuel in the carburettor, the pull starter is pulled or the starter box engages the flywheel. If the engine is tuned properly, it will start right up. Every R/C nitro engine needs a glow plug igniter to start.

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Petrol powered RC cars run on normal petrol mixed with 2-stroke oil.
These cars are usually large 1/5th scale models powered by an engine that is similar to a lawn mower engine but optimized for RC cars.

Nitro models run on special Model Nitro fuel and cannot be run on normal petrol. Model Nitro fuel is widely available in model shops.
Nitro powered cars are the most common kind of RC cars with a combustion engine, and are available in a variety of different scales.

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The type of fuel that you require will depend on the engine that is fitted into your car - we would suggest either 16% Nitro or 20% Nitro fuels for small block (.12-.18) engines and 20% Nitro or 25% Nitro fuels for big block (.21-.36) engines.

We always run our cars on the fuels that we distribute and find them to run reliably, have easy tuning characteristics and provide a long engine life so we wouldn't hesitate to recommend that you also use them in your car. Your local model shop will also be happy to advise on other fuels that they have available that suit your requirements.

For the petrol powered cars that we offer you should use unleaded fuel mixed with a good quality two stroke oil at a 25:1 ratio.

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It sounds like your idle speed is set too low. Try turning the idle screw 1/2 turn clockwise and start the engine of your car with the wheels off the ground. You can use your instruction manual to help identify the idle screw if you are unsure where to find it.

Next, apply the brakes on your transmitter and start turning the idle screw slowly anti-clockwise until the engine stalls. Once you have reached this point, turn the idle screw 1/8 turn clockwise again.

When set correctly the car should sit at a standstill when the engine is idling. You may find that on a brand new car the idle has to be set slightly higher so that the car does not stall. This is acceptable provided the car is not moving quicker than walking pace. You should be able to reduce the idle speed after a few more tanks of fuel.

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