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Author Topic: Rear Engine Modified Roadster Build  (Read 159264 times)
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Sumner
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« Reply #15 on: February 27, 2009, 01:49:40 PM »

.......  Still its a bunch of compromises to get everything to work together. Tony

Seems that almost everyone can build the "perfect car" in their head or on paper, but soon find out that it comes down to the "compromises" that you talked about. 

I look forward to seeing the build on this car.  Good luck with it,

Sum
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JimL
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« Reply #16 on: February 28, 2009, 12:16:02 AM »

Interesting idea.  Probably a little beyond my fabrication skills, however.  I'll have to wait until I can get the car off the ceiling and start working out the cage arrangement.

thanks,
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« Reply #17 on: February 28, 2009, 12:56:23 AM »

JimL, Its not that bad. My fabrication skills aren't that good, but I think I can tackle it.  I am just glad I am not doing the welding.  The drivers  compartment will come up against the fire wall.  That's where the step will start and the the front of the body will start to taper on the sides.   On either side by the taper there will be room for the dry sump tank or water tanks.   The shoulder area will have a smooth flow up like in this picture of the Panoz.  To build the shoulder area of the  body we will use foam to shape it and take a mold to send down to Kent.









« Last Edit: February 28, 2009, 01:03:42 AM by maguromic » Logged

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« Reply #18 on: February 28, 2009, 03:06:53 AM »

Tony
I have a lakester mold to layup next week do ya want me to do the layup on your nose the following week?
kent
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« Reply #19 on: February 28, 2009, 11:51:00 AM »

Kent,
I will give you a call on Monday.  Did the rooms work out for you?
Tony
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« Reply #20 on: March 06, 2009, 12:29:31 AM »

We have been working on the suspension layout an the brake system the last few days.  To keep the calipers and rotor out of the air in the rear we decided to go with inboard brakes.  After a lot of head scratching and calculations we need to run twin calipers (on each side of the car) to eliminate the bending moment on the gearbox output flange. By next week we should have all the suspension  geometry worked out.


This is the rack we will be running.  Its out of a '97 Reynard Champ car and is readily available and cheap.  We want the car to have very slow steering, so we used the Reynard  speedway 7 tooth rack ( it has 1.98” per revolution of wheel).  It will be further slowed down at the front wheels.
« Last Edit: March 06, 2009, 12:31:41 AM by maguromic » Logged

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dwarner
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« Reply #21 on: March 06, 2009, 02:09:42 AM »

Tony,

Do I detect a Bantam body? The tires look close, are they out at 50"?

DW
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« Reply #22 on: March 06, 2009, 10:09:30 AM »

DW, 

Its  a '27, the body drawing isn't that good, the tires are out at 51".

Tony
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« Reply #23 on: March 06, 2009, 12:38:24 PM »

"Champ car" and "Cheap".........Those are words you don`t see used together very often . Looks like a fun project....Thanks for sharing.  J.B.
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« Reply #24 on: March 06, 2009, 12:52:42 PM »

"Champ car" and "Cheap".........Those are words you don`t see used together very often . Looks like a fun project....Thanks for sharing.  J.B.


J.B., I know what you mean.  But there are lots of this old stuff floating around.  They go for about $175- $300. Ours was $200.  This is a community car that a bunch of us will be using and is a budget build, the majority of the parts on this car are off other race cars.  Some of the parts are cheap because they have been cycled out, but fine for what we are doing. If anyone wants to find one of these Reynard speedway racks the part number to look for is ILH007.
« Last Edit: March 06, 2009, 01:01:44 PM by maguromic » Logged

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saltfever
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« Reply #25 on: March 06, 2009, 10:56:34 PM »

Tony:
What CAD tool is used for the drawings? cool  Are you doing them or someone else?
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« Reply #26 on: March 08, 2009, 10:36:50 PM »

Tony:
What CAD tool is used for the drawings? cool  Are you doing them or someone else?

Saltfever, I didn't do any of the  drawings that are currently posted.  Their are a bunch of us working on this project and its broken down into each persons area of specialty. Steve Conover is a Champ Car / IMSA  engineer and is doing the suspension layout and the aero work and  is using Solidworks.  I will be doing the frame drawing in the next few weeks (I will post it for comments) and will use Unigraphics NX, I don't know of any other system that could do it practically. It might be possible in Solidworks but it would be very difficult in my opinion. I am also doing the body surface modeling and will use Maya, by Autodesk. Tony
« Last Edit: March 08, 2009, 11:51:21 PM by maguromic » Logged

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« Reply #27 on: March 09, 2009, 01:11:07 AM »

Thanks smiley for the update, Tony. It is nice to have "industrial strength" tools. Those are both great programs. Its been a quite a few years since I have seen a Unigraphics workstation. 
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dwarner
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« Reply #28 on: March 09, 2009, 11:34:47 AM »

Tony,

A lot of sofeware packages mentioned. Whatever happened to chalk on the floor and cutting pipe? If something doesn't fit, cut it off, move it and cover with rattle can spray.

DW
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« Reply #29 on: March 09, 2009, 11:48:39 AM »

Tony,

A lot of sofeware packages mentioned. Whatever happened to chalk on the floor and cutting pipe? If something doesn't fit, cut it off, move it and cover with rattle can spray.

DW

DW, I don't have the talent to do that. cry cry  I need a crutch to help me.  The guys that can do that are the true heroes of LSR and in my book an inspiration to me and many others. cheers  A couple of years ago I saw the pictures on how the Markley tank was built.  Chalk on the floor and a lot of beer cases with amazing results.  I think a few years ago Hot Rod named it in their list of most influential cars. Besides with the cost of pipe these days we cant afford to make a mistake. 

Tony
« Last Edit: March 09, 2009, 11:56:27 AM by maguromic » Logged

“If you haven’t seen the future, you are not going fast enough”
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