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XS Tri-Gear Speed Kit Parts.

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Richard Wheelwright

Joined: 15 Sep 2008
Posts: 111
Location: Halifax, West Yorkshire, UK

Posted: Sat Jan 04, 2014 7:21 am Post subject: XS Tri-Gear Speed Kit Parts.

UK List,

        I'm thinking of now fitting the Europa Speed Kit to G-PW and just wanted to see if anyone in the UK had any of the parts available, and wanting to to sell them? even if it is just one Item will help.



Thank you in advance  



Contact email rpwheelwright(at)yahoo.co.uk

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_________________
Richard Wheelwright
G-IRPW
First Flight 24th July 2013

JonathanMilbank

Joined: 14 Apr 2012
Posts: 388
Location: Aberdeen area

Posted: Sat Jan 04, 2014 1:43 pm Post subject: Re: XS Tri-Gear Speed Kit Parts.

Now that I've removed the monowheel and fitted "trainer wheels" dangling in the breeze, there's no doubt that I've lost about 8 knots in the cruise, not to mention the loss of about 45 lbs load capacity. However the peace of mind in runway crosswind situations more than compensates.



The speed kit in its entirety doesn't appeal, because I don't fancy having to clean grass and mud repeatedly from inside the spats, nor having to struggle to check brake pads and inflate tyres.



But I see that some folk only fit "pants" on the legs and fairings over the hinges. My question is "What are the different figures between the two arrangements, with or without wheel spats, in terms of weight and speed gain?"



It seems to me that the speed kit without wheel spats would offer relatively little speed gain and therefore is of questionable value.

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ptag.dev(at)talktalk.net
Guest

Posted: Sat Jan 04, 2014 3:26 pm Post subject: XS Tri-Gear Speed Kit Parts.

Hi! The next time I clean out spats will be the first .....other than doing

tyre changes.

The only problem I have is that without  spats the underside of the wings

are always covered in shit. 

With regards to weight factors I can't give you factors but I've never

failed to lift off !

Happy New Year.

Bob Harrison G-PTAG 



--

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frans(at)privatepilots.nl
Guest

Posted: Wed Jan 08, 2014 6:08 am Post subject: XS Tri-Gear Speed Kit Parts.

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On 01/04/2014 04:21 PM, Richard Wheelwright wrote:



 	  Quote: 	
		   UK List, I'm thinking of now fitting the Europa Speed Kit to G-PW

 and just wanted to see if anyone in the UK had any of the parts 

 available, and wanting to to sell them? even if it is just one

 Item will help.


	


I have the flap hinge fairings for sale (although I don't live in the

UK but mailing these things is not a big problem).



Frans

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frans(at)privatepilots.nl
Guest

Posted: Wed Jan 08, 2014 6:25 am Post subject: XS Tri-Gear Speed Kit Parts.

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On 01/04/2014 10:43 PM, jonathanmilbank wrote:



 	  Quote: 	
		   The speed kit in its entirety doesn't appeal, because I don't

 fancy having to clean grass and mud repeatedly from inside the

 spats, nor struggling to check brake pads and inflate tyres.


	


My "home field" is a muddy grass strip. But I never have to clean out

the spats (but I would have to clean the underside of the wing after

every landing without the spats). If your home field is a grass strip,

you don't have to worry much about the brake pads, but if your home

field is a hard surface you don't have to worry about mud and grass.

I remove the spats once a year, sufficient for maintenance, brake pad

checks, and cleaning out the inside of the spats.



 	  Quote: 	
		   But I see that some folk fit "pants" on the legs and fairings over 

 the hinges. My question is "What are the different figures between 

 the two arrangements, with or without wheel spats, in terms of

 weight and speed gain?"


	


Never measured these things individually, but from what I know about

it is that tubular constructions (like the legs) are extremely draggy

(some folks even claim that leg fairings have a greater benefit than

wheel spats) and that the hinge fairings are probably adding drag

instead of removing it. The hinges are pretty much knifes slicing

through the air, but with the fairing there is much more skin drag due

to the increased surface, and the opening at the rear is one of the

worst things you can do to any aerodynamic profile. I have left the

hinge fairings off, made a few tiny simple fairings for the transition

between wing and hinges to just cover the bolts and reduce

interference drag and keeping the rest of the hinge as is, and

optimised the outboard "double" hinges which are legacy things from

the monowheel (to avoid recertification of the wings and controls

after changing the gear lay out).



Frans

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