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Ian Harrison



Joined: 23 Nov 2006
Posts: 1670
Location: United Kingdom (Great Britain), Manchester

PostPosted: Sat Feb 04, 2012 5:47 pm    Post subject: Re: YOUR Reply with quote

Hi Craig

Are those new pics on a seperate link?

[quote="Riley Will

Aprilia's last magnesium cased RSW with APF cylinder
[/quote]

Wow, that does look "the dogs"

I love that airbox attachment bar come carb vent, nice detail.

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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Craig Butt



Joined: 04 Mar 2008
Posts: 95
Location: United States, Ohio, Columbus

PostPosted: Sat Feb 04, 2012 8:29 pm    Post subject: Re: YOUR Reply with quote

Ian Harrison wrote:
Hi Craig

Are those new pics on a seperate link?

Ian Very Happy


Ian,
Added to gallery in original link.
Craig
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2003 Italkart Supersonic / CRS (x2!)
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Riley Will



Joined: 03 Sep 2001
Posts: 1361
Location: Canada, not USA state,

PostPosted: Sun Feb 05, 2012 12:28 am    Post subject: Reply with quote

Ian,

Notice the titanium spigot for the Det sensor on the power valve cover?! Details aboud with Aprilia!!!! How about the Ti fasteners?

Yup, it's the bullocks!

As you know, the RSA takes it to another level altogether! Motor Porn!
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Riley Will
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www.brceng.com
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1670
Location: United Kingdom (Great Britain), Manchester

PostPosted: Sun Feb 05, 2012 1:29 am    Post subject: Re: YOUR Reply with quote

Craig Butt wrote:
Ian Harrison wrote:
Hi Craig

Are those new pics on a seperate link?

Ian Very Happy


Ian,
Added to gallery in original link.
Craig


I only see the original 7, am I doing something wrong
Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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Craig Butt



Joined: 04 Mar 2008
Posts: 95
Location: United States, Ohio, Columbus

PostPosted: Sun Feb 05, 2012 7:04 am    Post subject: Re: YOUR Reply with quote

[/quote]

I only see the original 7, am I doing something wrong
Ian Very Happy[/quote]

No, it would seem my "flikr skills" suck Embarassed

I uploaded them but hadn't actually added them to the set - they are there now:
http://www.flickr.com/photos/craig71188/sets/72157629162920277/

Craig
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2003 Italkart Supersonic / CRS (x2!)
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1670
Location: United Kingdom (Great Britain), Manchester

PostPosted: Sun Feb 05, 2012 10:27 am    Post subject: Reply with quote

Hi Craig

OK, I can see them all now.

What a weird clutch lever arrangement!!!!!

Unfortunately the last picture reveals that it is a non-sideloader.

Be a fun project for you to restore. I'm sure it will give you hours of frustration and fun Cool

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
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Championship winning Superkart race team 1997-2012
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Sam Zavaglia



Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,

PostPosted: Sun Feb 05, 2012 8:19 pm    Post subject: Reply with quote

Riley Will wrote:
As you know, the RSA takes it to another level altogether! Motor Porn!

Is this the porn your talking about Riley?
It's come some way from using that ZIP/Rotax on the farm yard. Laughing
8 x 8mm studs to hold the head cover on.....stronger than a John Deere. Laughing




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Last edited by Sam Zavaglia on Sun Feb 05, 2012 8:27 pm, edited 2 times in total
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Sam Zavaglia



Joined: 23 Nov 2004
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Location: Australia, Sydney,

PostPosted: Sun Feb 05, 2012 8:23 pm    Post subject: Reply with quote

Double Post....
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Riley Will



Joined: 03 Sep 2001
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Location: Canada, not USA state,

PostPosted: Sun Feb 05, 2012 9:22 pm    Post subject: Reply with quote

Sam,

Yes, the RSA125 and the rarer RSA250. They changed both engines for the same thrust face of the piston along with a new power valve layout and of course the rear central disk valve inlet on the 125.
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1670
Location: United Kingdom (Great Britain), Manchester

PostPosted: Mon Feb 06, 2012 1:38 am    Post subject: Reply with quote

Hi Guys

This is a bit general and Sam pulled the trigger with his observation of the head studs on the Aprilia.

That looks a great improvement from Aprilia particularly in terms of long term reliability.

I have long been a critic of "1 race" marginal engineering, where GP teams (without stringent financial contraints) just replace parts that are only fit for the bin after a meeting or 2. No worries about making a season, the effects of stripping and replating cylinders, clutch longevity, marginal gearboxes failing, etc., etc.

OK, nothings that simple and there's a world of difference between a bike GP team/manufacturer and your average superkarter, but all too often we end up with secondhand, innapropriate technology and too often pay the price that eventually puts the individual out of the game and discourages others from even considering the journey.

Reliability with power is entirely possible (although I realise that re-engineering is not cheap).

For the manufacturer that grasps the nettle, there is a long term market out there, that is capable of sustainable growth.

Some may already be taking a longer term view and be embarking on that course. Wink

Just a bit of a rant!!

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012


Last edited by Ian Harrison on Mon Feb 06, 2012 10:25 am, edited 1 time in total
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Sam Zavaglia



Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,

PostPosted: Mon Feb 06, 2012 4:31 am    Post subject: Reply with quote

Ian Harrison wrote:
Sam pulled the trigger with his observation of the head studs on the Aprilia.

That looks a great improvement from Aprilia particularly in terms of long term reliability.


Assen 2009, Race 2.....got a hot shower.......that's why I noticed..... I see some missing threads in the picture below Laughing

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Ian Harrison



Joined: 23 Nov 2006
Posts: 1670
Location: United Kingdom (Great Britain), Manchester

PostPosted: Mon Feb 06, 2012 10:22 am    Post subject: Reply with quote

Hi Sam

Yeah, the rear bolt pulled the thread clean out then the insert tilted up at the back and broke off the piece of cylinder.

From the piston it was running nice though Laughing Laughing Laughing

Ah, well.

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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George Sunderland



Joined: 26 Jul 2001
Posts: 2006

PostPosted: Mon Feb 06, 2012 11:43 am    Post subject: Reply with quote

Here's a good shot at the unique disc valve. I'm told the Chinese have or are near to making a cheaper copy?






Last edited by George Sunderland on Mon Feb 06, 2012 11:49 am, edited 1 time in total
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George Sunderland



Joined: 26 Jul 2001
Posts: 2006

PostPosted: Mon Feb 06, 2012 11:47 am    Post subject: Reply with quote

Video of the vtwin engine.

http://www.youtube.com/watch?v=vIkBi3FvPWA

Still think you have to be nuts to drop that kind of $$ on a go-kart engine.

That Zip is almost exactly the same as one I have except mine has calipers on both sides of the rear. Still one of my best handling karts. I even prefer it to my newer upright front end karts.


Last edited by George Sunderland on Mon Feb 06, 2012 2:10 pm, edited 1 time in total
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Greg Stamm



Joined: 31 Oct 2003
Posts: 40
Location: United States, Michigan, South Lyon

PostPosted: Mon Feb 06, 2012 11:51 am    Post subject: Picture of 87 or 87 Zip Kart Reply with quote

After significant digging thru my archives I found my 86 or 87 ZipKart brochure. Below is a black and white copy of the cover that shows the original body work that came with the kart you now have. Donna Hupp ran this kart new in the Mid States series with this bodywork, minus the driver fairing.

[img][/img]
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