MK9R
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| posted on 19/12/12 at 01:24 PM |
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New MNR GM3 pictures
I cant resit putting a few pics up of the new car being built between ourselves and MNR, The MNR GM3.
The chassis is based on the Vortx, but is a chain driven, front engined configuration. The first chassis (mine) is 9" shorter than a standard
Vortx to minimise the weight and weight distribution and to reduce the drivers compartment to the exact length to fit my "limited height"
stature, and allowing the engine to be moved back as far as possible into the passenger compartment to still meet RGB regs (75%). The rear diff is a
visocous type unit from an RS turbo, and the rear chassis modified to suit. The suspension geometry is exactly the same as a standard Vortx but the
way it all ties back to the chassis is completely changed, something that Mark is looking to do to the Vortx in the future as its such a tidy
solution. Due to the distance between the engine and rear diff an idler gear is mounted in the tunnel so 2 chains will be used to span the distance.
The chassis is still in progress so lots more tubes etc to be added.
The Bodywork is completely new, being built by myself and father. We are using the nose we initially deesigned and built for the exiting fury, but is
having to be widened by 6" due to the wider track width. The rear body work is a new design that we bult and tested on the fury to balance out
the extra downforce created at the front by the nose. All the rest is/will be completly new. The New bodywork once complete will fit any standard
existing or new Vortx, and will be available through ourselves and MNR. Obviously this a still sometime away from being completed as we are still only
making the buck.
Once finished the car will be tested, developed and raced in the RGB series.
[Edited on 19/12/12 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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dave107
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 posted on 19/12/12 at 01:28 PM |
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where are the pictures.
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dave107
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 posted on 19/12/12 at 01:33 PM |
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looks cool.
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richardh
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| posted on 19/12/12 at 01:54 PM |
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likey
Time for a change!
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HowardB
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| posted on 19/12/12 at 02:06 PM |
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that explains the desire for the classic bonnet! Looks good, can't wait to see the finished car,..
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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MK9R
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| posted on 19/12/12 at 02:10 PM |
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quote:
Originally posted by HowardB
that explains the desire for the classic bonnet! Looks good, can't wait to see the finished car,..
As it turns out none of the bonnet is being used now anyway, infact not a single piece of fury DNA is left.
Trouble I have now is I have no bodywork for the old fury to start next season as it s all been destroyed, so I may still be looking, lol
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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scootz
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| posted on 19/12/12 at 02:18 PM |
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Interesting project!
I have to ask though...
Why did you go for chains?
And, is it a LHD car (I'm thinking about the engine being viased towards the drivers side).
It's Evolution Baby!
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MK9R
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| posted on 19/12/12 at 02:31 PM |
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quote:
Originally posted by scootz
Interesting project!
I have to ask though...
Why did you go for chains?
And, is it a LHD car (I'm thinking about the engine being viased towards the drivers side).
Was waiting for both those questions.
Yes its left hand drive due to engine/driver relationship. It should also give good weight distribution unlike normal rear engine cars where engine
and driver are on the same side. Scott mittels class r car is LHD to balance out engine and driver.
A few reasons for chain drive:-
Less transmission losses than normal car diff
Lighter (not massive but defo lighter) even including idler
Possible to quickly and easily change drive ratios for different circuit's, a big advantage over all other class f cars
C of g of engine can be moved closer to longitudinal c of g of car
Just because....
[Edited on 19/12/12 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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HowardB
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| posted on 19/12/12 at 02:36 PM |
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"just because"
the ONLY reason that a man and his shed ever need
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again and goes zoom)
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TimC
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| posted on 19/12/12 at 03:34 PM |
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Not to put to fine a point on it, this is probably the best thing that could've happened to RGB Class F - genuine fresh thinking and innovation.
It's going to be great to see it out.
On a personal note, I can't help feeling excited about pitting my very traditional new car (live axle, outboard shocks, engine where a X-flow
would normally go) against something so mad.
Bravo for being nuts enough to dream it up and well done Marc & Chris for getting involved.
Now try not to make it look like a morose Guppy.
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scootz
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| posted on 19/12/12 at 03:44 PM |
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You only had to say 'just because'. That's always good enough for me! 
It's Evolution Baby!
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adithorp
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| posted on 19/12/12 at 04:27 PM |
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quote:
Originally posted by TimC
Not to put to fine a point on it, this is probably the best thing that could've happened to RGB Class F - genuine fresh thinking and innovation.
It's going to be great to see it out.
On a personal note, I can't help feeling excited about pitting my very traditional new car (live axle, outboard shocks, engine where a X-flow
would normally go) against something so mad.
Bravo for being nuts enough to dream it up and well done Marc & Chris for getting involved.
Now try not to make it look like a morose Guppy.
Got to agree with most of that... The last bit's a tad cruel though...
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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MK9R
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| posted on 19/12/12 at 04:38 PM |
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We modelled the last car on Mr Cheney, well pick someone different this time
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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nick205
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| posted on 19/12/12 at 04:59 PM |
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Looks well Austen, particularly like the way the chassis has been adapted, no rear overhang at all by the look of it?
Where does the fuel tank sit?
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MK9R
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| posted on 19/12/12 at 05:05 PM |
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Fuel tank will go up the front as long as weight distribution is OK with that. Idea is to leave positioning until the end when we can pit it on corner
weights
It can go at rear of need be
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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Tris
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| posted on 19/12/12 at 06:44 PM |
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Looking good mate, like what has been previously said, its the best thing to happen to class f for a while. Most important question though - with it
being wider, will it still fit in the bus ?
Whats the plan for the air box ? - some sort of 90 deg bend ?
With the engine now in that orientation, i guess it would also be ideal from a performance (and cost) point of view to try and use more of the stock
manifold - there room underneath the engine to route ?
[Edited on 19/12/12 by Tris]
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JoelP
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| posted on 19/12/12 at 07:58 PM |
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Heading towards the dp1 layout. I always fancied having a bike engine longtitudinal in the passanger seat, which keeps it rhd.
Beware! Bourettes is binfectious.
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woodster
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| posted on 19/12/12 at 08:15 PM |
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Very nice , I like the way you modelled it in mdf , how did you manage to bend it for the front wings ? 
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stevebubs
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| posted on 19/12/12 at 09:01 PM |
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Looks good. Just one thing I'm sure you've already checked - do the lights have enough clearance to the wheels?
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MK9R
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| posted on 19/12/12 at 09:39 PM |
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Tris,
It should fit in bus with 15mm to spare, although we have got to modify the seat brackets
Exhaust will be custom Tony law again I think, can't go under engine as set as low as possible. Hoping to keep airbox completely stock,
I'm using a Zx 10 with the secondary injectors
Woodster,
Its 2 layers of the thin MDF with the grooves cut in it so it bends easily, glued together over a former
Steve,
We spent lots of time checking wheel clearances, obviously the outer this is just a guide for the flared arches. The head light area is going to be
completely redesigned so the flat arches blend down into the nose, loosing the fury style flat area for the lights
[Edited on 19/12/12 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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jeffw
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| posted on 20/12/12 at 11:30 AM |
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Interesting solution to the problem. I'm intrigued as to how you will tension two long chain runs, it seems that you would need to keep the
centre double sprocket stationary and have the adjustment on the axle and the engine. Some sort of spring loaded automatic tensioner pressing on the
chain?
[Edited on 20/12/12 by jeffw]
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MK9R
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| posted on 20/12/12 at 11:58 AM |
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The idler and rear diff has adjustment, engine is fixed. So set front chain tension using idler, then set rear chain with diff
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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big_l
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| posted on 14/1/13 at 10:11 PM |
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Mega should really help with gearing no more daft 3.14 £999
Typical MNR quality
Check out my blog mnrvortxhayabusa@blogspot.com
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MK9R
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| posted on 16/1/13 at 12:01 PM |
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A few more pictures of where we are today, comments (good or bad) greatly appreciated:-
[Edited on 16/1/13 by MK9R]
[Edited on 16/1/13 by MK9R]
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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HowardB
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| posted on 16/1/13 at 12:46 PM |
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that is cool, I am really impressed, is there enough bonnet bulge under the roof?
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again and goes zoom)
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