Whadda you think?

Carl · November 25, 2004, 08:25:55 AM

QuoteOriginally posted by MikeLMR
Hi Carl, a trochoid is a linear version of the rotor housing profile which is a epitrochoid with very specific dimensions.

Epitrochoid

Trochoid

Nice Java demonstration

I\'ll shut up now (I think Clive wants his rotary anorak back )

Yes that is right mike,
I was just trying to keep it simple.
Regards
Carl

Wav · November 25, 2004, 09:56:38 AM

Now that will look sweet on a rex, but more than likely will look better on a bike because you\'ll be able to see more of it:cool

Excellent bit of kit,

Paul:)

Shark · November 25, 2004, 02:10:50 PM

QuoteOriginally posted by Norton
Not bad is it?! An RX7 version will have to be built to order and i expect Geoff will need the dimensions you want it made to. You will have to discuss price with Geoff. PM me with your email address and i will pass it onto him.

If anyone follows this up and contacts the guy I\'d be interested in a rough price for these and may find the money in the new year if getting 2 makes it cheaper and the price is right.

Really cool :cool

Gregor

Dan Norton · November 25, 2004, 04:14:41 PM

Group buy anyone!?!?!?!?!

I want one of these aswell.

Dan!!

Norton · November 25, 2004, 09:35:44 PM

Good Grief, he will be a busy boy...

Anyone interested, PM me with your e-mail addresses and i will pass them on.

Norton · November 25, 2004, 11:58:43 PM

QuoteOriginally posted by clive
the stock box has two little pipes out of the back.

Like this ?? Do you know what diameter they are ??

Shark · November 26, 2004, 03:38:03 PM

can measure mine at the weekend if you want to know.

Norton · November 26, 2004, 09:24:17 PM

QuoteOriginally posted by Shark
can measure mine at the weekend if you want to know.

Please! need to know what Mazda reckon is the optimum outlet pipe area as a starting point, in fact any info would be good, like is the pipe that comes out of the front end of the back box straight or curved and offset or in line? clamped pipe diameter? overall lengths? etc. Ideally we could do with getting hold of one... I dont suppose anyone in the North West of England happens to have an old or spare one knocking about, gathering dust do they?
Does everyone who is interested, so far, run a 3rd gen? or are we looking at a 2nd gen twin box version as well? This may all take some time, the man only has so many hours in a day!!

Dan Norton · November 26, 2004, 11:35:45 PM

Sorrry norton dude, i only have an re-amemiya back box, nothing like the orignal.................however the pics you have look just like the standard items
!!!!!!!!

But i know what you mean.........does anyone have a good standard back box to lend norton dude, so his mate can copy?

Would love this to genrate to a group buy.

Dan!!

Shark · November 28, 2004, 12:38:20 PM

Right, both pipes coming out of the stock back box are 2 1/4 inch

didn\'t look at the entry to the back box, sorry.

I\'ll donate my stock back box if someone will give me an aftermarket replacement to keep me driving!

Norton,
I don\'t know if I can afford this right now, but can you PM me the contact details for this guy so I can establish what sort of price we\'re talking about. Will he do full cat back or even a full system? Would be happy to put toghether a spec for these and if helpful, my car could be a test case for others...

Gregor

Norton · November 28, 2004, 10:53:15 PM

QuoteOriginally posted by Shark
Right, both pipes coming out of the stock back box are 2 1/4 inch... can we establish what sort of price we\'re talking about. Will he do full cat back or even a full system? Gregor

Thanks, Two 2&1/4 inch pipes, thats about the same as one 3&1/4 inch if my maths serves me right (around 8cm).
I imagine Geoff will need to figure out what he needs to build before he can price it up. I think the idea is just to produce a rotor shaped rear section, does it extend all the way forward to just behind the cat or is there a clamp point just ahead of the back box?

Norton · November 29, 2004, 01:21:51 AM

This pic of an aftermarket FD pipe would suggest that there IS a join just ahead of the back box, is this the same as the standard system?

Shark · November 29, 2004, 10:02:54 AM

I\'m not sure of the joins and it\'ll be next week before I can look, but I wouldn\'t take the stock system as the optimal arrangement as I think it\'s restrictive.

I do however know that the Blitz NUR spec R is 3 inch bore pipe entering the back box and a 4 inch exit. This might be a better basis to work with provided the sizing matched up to the midpipe/cat section.

Gregor

Norton · November 30, 2004, 10:21:20 PM

Another pic ive found of an aftermarket FD pipe shows the mounting hangers... look familiar anyone?