KTM 250 SX - F 2015

eurekaman7 · L Plate Warrior Joined: 11 Aug 2014 Karma :

Hi Guys

I am a student studying in Dubai. Me and my colleagues are making a formula prototype race car. Many of you might have heard about Formula SAE.

Our first year car involved a CBR600 1992 model converted to EFI using motec m4.

This year we plan to focus on reducing weight and improved chassis design.

Want to know your reviews on KTM 250 SX-F 2015.

Is it viable for a formula type car which would weigh around 200kg?

Also i noticed it is a single cylinder engine.

Can you recommend any other engine that would weigh less and be just enough for the competition. (We hoping for a twin cylinder engine with 360 deg firing order)
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Conzar · World Chat Champion Joined: 11 Jun 2012 Karma :

I would recommend using a similar engine to this

https://www.ebay.co.uk/itm/Suzuki-GSX-1300-Hayabusa-TURBO-/181301021960?pt=UK_Motorcycles&hash=item2a36620d08[/url]
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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

What are the rules you are limited by?
I would go for the biggest 2 stroke I could if you want light weight.
The SX-F is high revving and doesn't make THAT much power - yo

eurekaman7 · L Plate Warrior Joined: 11 Aug 2014 Karma :

That is a 4 cylinder engine and pricey. Razz

Is there any better engine: lighter, easy maintenance and enough to handle 200kg.
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Conzar · World Chat Champion Joined: 11 Jun 2012 Karma :

_Iain_ · Banned Joined: 01 Feb 2012 Karma :

https://www.ktm-koestler.de/images/stories/virtuemart/product/Motor5_50p.jpg

https://www.ktm-koestler.de/en/maico-bikes/maico-shop/maico-engines-2014/engine-685-detail.html

81 horsepowers, very lightweight.

Yamaha Banshee quad engine. 2t, lightweight and highly tuneable.

https://duncanracing.com/images/BuyersGuides2009/big-BansheeMotorProfile.jpg

Plenty more, but that's the two strokers that come to mind. Two stroke motors ought to be lighter than the four strokers and are internally a lot lot simpler. I can't see the SX-F motor at 40ish bhp being much good in a 200kg car.

Idk, definately not one I'd put in a car if I had other options availibe to me.
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

eurekaman7 · L Plate Warrior Joined: 11 Aug 2014 Karma :

Thanks guys Very Happy

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MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

I'm part of the same thing for sydney uni. I wouldn't say I'm a particularly active member though, I go there to machine some stuff when I have a bit of time.

Previous years have used a GSXR600 engine, but the last 2 have used the SXV550 engine, which apparently runs pretty well with the 25mm or so inlet restriction, assuming you're following the same regs.

They generally look the same, but this is one of the older ones.

https://sydney.edu.au/images/content/news/2013/mar/15_grand_prix_1.jpg
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Kickstart wrote: Hi I tend to agree with Matt. All the best Keith