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Post by trebeislol on Apr 7, 2018 1:30:03 GMT -5
Hi everyone
I was able to get my hands on an sr30 turbojet minilab. I don't have it yet, but it should't be more than a month or so.
I don't know a lot about the condition yet, but I know it's full of dust and hasn't run in 10-15 years. Since I am a complete noob I have some questions:
- What do I absolutely need to know working with a yet engine for the first time?
- Is it even possible to get all the dust out?
- What fuels can such an engine run and what is the most powerfull?
Iinformation on the turbojet is plentyfull on the internet, just google "sr30 turbojet minilab".
Thanks in advance!
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Post by racket on Apr 7, 2018 4:20:45 GMT -5
Hi
Nice little engine :-)
LOL...........your first question needs several thousand words, and even then it wouldn't be adequate .
The second one is a bit easier , as long as the dust hasn't entered the fuel or lubrication ports the other bits only need a good blow out so that it spins freely .
Third question, use kero or diesel , theres no such thing as the "most powerful". use a "safe " fuel that doesn't have volatile fumes , avaiation jet fuel is only kero with the water and sulphur removed, theres no better fuel than kero .
Yep , plenty of info on the Net, read as much as you can , and once you have the engine and checked its condition with regards any missing bits, instruments etc , we'll then have a better idea of what you need to know about firing it up , but from the short read I've had about them its virtually just a "turnkey" engine .
Looking forward to checking out some pics of your acquisition so we can give you some advice .
Cheers
John
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Post by trebeislol on Apr 7, 2018 7:59:24 GMT -5
Hi Nice little engine :-) LOL...........your first question needs several thousand words, and even then it wouldn't be adequate . The second one is a bit easier , as long as the dust hasn't entered the fuel or lubrication ports the other bits only need a good blow out so that it spins freely . Third question, use kero or diesel , theres no such thing as the "most powerful". use a "safe " fuel that doesn't have volatile fumes , avaiation jet fuel is only kero with the water and sulphur removed, theres no better fuel than kero . Yep , plenty of info on the Net, read as much as you can , and once you have the engine and checked its condition with regards any missing bits, instruments etc , we'll then have a better idea of what you need to know about firing it up , but from the short read I've had about them its virtually just a "turnkey" engine . Looking forward to checking out some pics of your acquisition so we can give you some advice . Cheers John Thanks for your answer! I'm also looking forward to getting it. The only downside is that it's only used for educational purposes, so the thrust is limited to 44N by the monitoring system. According to the documentation this engine should be able to produce up to 178N, but to be able to achieve that I would have to scrap the complete digital system or find a way around the limitation. But those are problems for later, I will worry about getting and firing it up first hahaha. Quick question: how much is 44N and 178N compared to most hobbyist engines? |
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Post by racket on Apr 7, 2018 17:00:59 GMT -5
Hi
Yep , you'll need to do a bit of fiddling with the systems .
178 N - 40 lbs is a mid sized engine for us , though for RC aircraft its a fairly large engine .
The main concerns with starting a new engine is lubrication and then making sure the temperatures aren't exceeded during a spoolup , as long as theres no more than a dull red glow from the turbine blades it should be OK ,............. NO bright red to orange colouring .
Cheers
John
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Post by trebeislol on Apr 8, 2018 2:41:53 GMT -5
Hi Yep , you'll need to do a bit of fiddling with the systems . 178 N - 40 lbs is a mid sized engine for us , though for RC aircraft its a fairly large engine . The main concerns with starting a new engine is lubrication and then making sure the temperatures aren't exceeded during a spoolup , as long as theres no more than a dull red glow from the turbine blades it should be OK ,............. NO bright red to orange colouring . Cheers John I'll keep that in mind, thanks! Now it's waiting for the engine to arrive... I'll keep you updated. |
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