At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
I'm fairly sure that the engine inlet spikes in my SR-71 model have been fitted wrongly. The spikes on the real aircraft are assymetric and are angled slightly inwards whereas on my model they are angled slightly outwards....if they could be removed and swapped over and reinserted this would fix the problem...any ideas ?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Nice cars when new but generally didn't age very well and unless looked after very well soon became a money-pit and the annual MOT test could be a nightmare, in my experience costing around four times the average to prepare for.
Really Diego you could carry out your own research and have more enjoyment reading about the model than you get just being presented with a few relatively meaningless facts because in the real world those facts were highly variable, especially where diesel engines were fitted.
Jessy is correct, but there are a number of other points to note.
You didn\'t mention the aircraft type nor engine type, so I can\'t be too specific. The location of the battery is important; some aircraft have the battery in the back, some under a seat and some in the engine bay. The distance from the battery will have an effect on the starter. Earlier aircraft types have been known to have aluminium battery cables. If they are fitted on your aircraft you should change them to copper. (Most copper cables will be \'tinned\' so they will look silver, don\'t confuse them with aluminium). The engine is mounted with rubber mounting blocks, there should be a large earth strap or cable fixed to the engine from a \'ground\' point on the aircraft or engine mount. This earth lead is very important and should be very well secured. If it is not the starter will find an earth through other electrical leads such as the \'screening\' around the magneto switch leads or the alternator field leads. This can cause a fire. What I normally do is to take each earth lead and secure it using a \'shakeproof\' or \'star\' type locking washer between the lead head and the engine or airframe ground point, (like a sandwich). This helps to make a sound connection. The live leads should not be overlooked either, nor the condition of the battery and the battery terminals. Lastly, some of the smaller aircraft engines were plagued with bad starting due to the fact that the starter turned the engine too fast and the magneto impulse coupling retracted so not allowing the impulse to catch on the impulse pawl, thus the ignition was not retarded nor was the impulse \'wound up\' to give a good spark. The solution to this problem was to fit starters with a different gearing that slowed down the cranking speed. There is a Lycoming service letter on this subject. So, check that you have the correct starter fitted to the engine type - not all starters are the same!
×