mondo
New Member
Joined: November 2014
Posts: 7 
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Post by mondo on Nov 16, 2014 16:04:01 GMT -5
I use google translate !
Sure wish we (in the UK) had something similar to your 'speed weekend'
Awesome stuff
Cheers
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Post by Johansson on Nov 17, 2014 0:04:26 GMT -5
Speed Weekend is awesome, as little regulations as possible and tons of great people. The only downside is the weather which has to be perfect for the ice to be at its best, but there is talk about a standing mile version of the Speed Weekend on an air field this summer somewhere in Sweden.  |
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valvehead
New Member
Joined: December 2014
Posts: 4
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Post by valvehead on Dec 21, 2014 14:34:26 GMT -5
Ok, I think this is the right place for introductions?
Hi, my name is Matt. I have been interested in gas turbines and generally any engine since I was about 7:-)
I am a professional electrician but I have generally worked in industry rather than domestic stuff. I did an an apprenticeship in avionics and went on to work at all sorts of places here in the UK. I have worked in induction heating and laser welding/hardening at a small manufacturer. Also worked for Dowtys for several years, then I went to Honda in Swindon for a while. Currently working in a data center.
I'm well into electronics, which I think may be of some help to you guys.
Anyway, cheers
Matt.
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Post by racket on Dec 21, 2014 18:26:32 GMT -5
Hi Matt
Welcome to the Group , I hope you find some inspiration in the various builds .
Always good to have a guy with handy skills that a lot of us lack :-)
Cheers
John
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Post by Richard OConnell on Dec 21, 2014 21:38:30 GMT -5
Nice to have you on board Matt |
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valvehead
New Member
Joined: December 2014
Posts: 4
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Post by valvehead on Dec 22, 2014 18:42:08 GMT -5
Thanks guys:-)
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valvehead
New Member
Joined: December 2014
Posts: 4
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Post by valvehead on Dec 22, 2014 21:18:04 GMT -5
Forgot to say, This is an outstanding forum. Many like minded people here. I have a good design for a "bang box" for all your ignition needs. Some of the higher powered ones call for more than seven or eight joules. Pretty lethal?  but some ignitors/plugs can't take this amount. The design I have can be easily scaled from tiny, ie match box size to flat out crazy, ie shoe box size. It uses readily available components, so really is a do it all device. If you guys are up for it I will start a new thread in the new year detailing the connstruction? The larger ones use microwave cooker caps which in this application may not be 100% reliable. So for actual aviation applications another type of capacitor would be best. Cheers Matt. |
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Post by racket on Dec 22, 2014 21:39:09 GMT -5
Hi Matt
Good ignition systems are one thing thats always been somewhat of a "problem" for us engine builders to easily source , theres auto derived coils which can be bulky and still need "switching gear" constructed , and some specialty "spark" producers that use a small DC cell battery , 1.5V -9V type , but the spark is kinda weak , ideally we need something thats 12 volts so it can use the same battery as our fuel and oil pumps , the spark needs to be not quite lethal, but pretty strong, with several sparks per second that a standard auto spark plug can cope with for limited operational times, oh , .....and an auto switch off after a few minutes as its very easy to forget to switch things off in the heat of the moment .
A Build Thread would be good :-)
Cheers
John
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valvehead
New Member
Joined: December 2014
Posts: 4
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Post by valvehead on Dec 22, 2014 22:26:04 GMT -5
Hello John, my design uses high voltage around 40KV to cause an initial ionisation of the gas in the "gap" this allows a lower voltage ( 3KV) to discharge across the "gap" at much, much higher current. Depending on the size of the capacitor this can be several thousand amps for an instant. Most genuine ignitors will take this no sweat but an ordinary spark plug will first erode the tip then crack the insulator..... Not good..... Destruction of an engine. So the whole thing needs to be scaled to the job in hand? Cheers Matt. |
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mondo
New Member
Joined: November 2014
Posts: 7
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Post by mondo on Dec 27, 2014 4:22:51 GMT -5
I'll be looking out for that thread Matt
Cheers
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Post by frankenhealey on Jan 20, 2015 8:28:13 GMT -5
Hi Everyone, New to the forum and thought I'd introduce myself. I was looking at building a Rover JET 1 replica complete with turbine drive but found some documentation that suggested that Austin Healey had once looked at a turbine car for record breaking at Bonneville. Being a Healey guy I decided to try and build one. To try and keep it in period I acquired a Rover/Lucas Mk105 and a Spridget chassis. The plan is to put the turbine in the passenger side and utilising a reduction and reversing geartrain to get the right direction of rotation and run it either directly or with an intermediate belt drive through the rear axle. The turbine is rated at 150bhp and we hope to squeeze the unladen weight under 500kg for the Bonneville Turbine class. Lots to do and many dumb questions to ask so I give you my apologies now  Turbine  Car ends up like this (we hope)  What we are starting out with  |
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Post by racket on Jan 20, 2015 15:22:19 GMT -5
Nice project :-)
Looking forward to a Build Thread
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Post by frankenhealey on Jan 20, 2015 15:59:13 GMT -5
Nice project :-) Looking forward to a Build Thread
Thanks. There will be a build thread. |
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Post by racket on Jan 20, 2015 16:37:27 GMT -5
Where are you based ??
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Post by frankenhealey on Jan 20, 2015 16:50:50 GMT -5
Purbeck, Dorset
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but some ignitors/plugs can't take this amount.