LocostUSA.com

Learning how to build Lotus Seven replicas...together!
It is currently Fri Nov 28, 2014 10:18 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3  Next
Author Message
PostPosted: Tue May 08, 2012 1:36 pm 
Offline

Joined: Tue Oct 19, 2010 11:57 am
Posts: 290
Location: Waterloo, WI
horizenjob wrote:
The double roll hoops you are considering are weaker and contribute less to overall car strength, if I understand what you mean They are less safe if the car rolls in dirt or sand. Not allowed by the rules either, I think. As a practical matter they are also hard to install because I don't know what you would connect them to...


Are you meaning the two tubes that are connecting the rear hoop to the front (windscreen) hoop shown in the last picture above? I'm curious how this might be less safe. Would a single tube would be better?

_________________
-Keith


Top
 Profile  
 
PostPosted: Tue May 08, 2012 2:42 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
The double rear roll hoop and single front with supports are what the open style DP car use if I am right, I will read though the Regs and list, what I am talking about. The main idea behind the design is the driver is inside of the parallel line drawn between the two. The fron bar is a bove the height of the steering wheel so your hands stay with in the safety area.( much like is used in open wheel race cars from indy to Ford Races and other older open wheel cars. This is the same idea used for open cabin cars in the AMLS and LMS series. Big differance is they are using a carbon fiber chassis.

I will post the sections of the SCCA, NASA and FIA regs they refer to. To see if I am reading this right.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Tue May 08, 2012 2:45 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
Acerguy-

I do plan o using door bars to connect the two togeather for overall strength along with forward bars on the fron hoop and rear bars on the rear hoop.

If I understand the regs right the rear has to be a two stage system IE. main hoop and second hoop incase of failure.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Tue May 08, 2012 3:41 pm 
Offline
The voice of reason
User avatar

Joined: Thu Jan 10, 2008 4:47 pm
Posts: 5909
Location: Massachusetts
I misunderstood what you meant by dual hoop. I thought you meant the little individual ones you see on cars like Cobras sometimes.

_________________
Marcus Barrow - Car9 an open design community supported sports car for home builders!
SketchUp collection for LocostUSA: "Dream it, Build it, Drive it!"
Car9 Roadster information - models, drawings, resources etc.


Top
 Profile  
 
PostPosted: Tue May 08, 2012 3:49 pm 
Offline
We are Slotus!
User avatar

Joined: Tue Oct 06, 2009 9:29 am
Posts: 5232
Location: Tallahassee, FL (The Center of the Known Universe)
horizenjob wrote:
I misunderstood what you meant by dual hoop. I thought you meant the little individual ones you see on cars like Cobras sometimes.


I made the same mistake... Ooopsie... :oops:

The two parallel, full width hoops as drawn should be very strong, they look like NHRA Funny-car spec. Should be SCCA rule-compliant. (I think?) SCCA will require a diagonal on the "main hoop" which might get interpreted to mean both of the rears need a diagonal bar. Not sure about that. As you've suggested, look up the rules and build to suit them. It wouldn't hurt to have a chat or email conversation (with pictures) with the sanctioning body (or bodies) you plan to race with.

:cheers:
JDK

_________________
JD, father of Quinn, Son of a... Build Log
Quinn the Slotus:Ford 302 Powered, Mallock-Inspired, Tube Frame, Hillclimb Special
"Gonzo and friends: Last night must have been quite a night. Camelot moments, mechanical marvels, Rustoleum launches, flying squirrels, fru-fru tea cuppers, V8 envy, Ensure catch cans -- and it wasn't even a full moon." -- SeattleTom


Top
 Profile  
 
PostPosted: Wed May 09, 2012 4:43 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
Ok, I have been pulled away from using my 2JZ and toyota transmission set up. To am more normal or tried and proven set up of a LSX motor and T-56 aftermarket transmission. We decided to go this route for ease and part availability. This way for the most part we can get majority of the need drivetrain, electronic and other stuff faster and at more locations if repair is need and that is very common with racing.


So As Of right now, what we are looking at is using a RHS race block and PRC LS7 heads. I will go into the parts and plan for the engine once we have everything tied down and ready to go. We are trying to decided if we should go with a crate or custom built engine from a well know or to build the motor ourselves.


SO we are on to RLH 1.1 build stage now.

I am getting ready to take a few classes offered my both Autodesk for AutoCADD13 and invertor programs and also one with IronCAD so I am able to work with the programs easier.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Thu May 10, 2012 11:06 am 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
Ok I am finally starting with some basic drawings.


With the drawing here are some specs

102.75" wheel base

151.60" overall length

7.45" front overhang

13.9" rear overhang
69" front track, hub to hub, with 3" offset wheels
65" rear track, hub to hub with 5" offset wheels

I have Hoosier R6 tires listed, but have found both Michelin Pilot and 2 other brands for street use with same basic dimensions.


This is just the flat floor layout and the start to where to build the chassis from.

I can adjust the car for front body work, If I can not run open front wheels, this would give the car more of a DP styling May just built it this way to start with, to ensue the car being able to be raced and driven.


Attachments:
RLH 1.0 basis chassis flat floor layout basic 2.jpg
RLH 1.0 basis chassis flat floor layout basic 2.jpg [ 152.68 KiB | Viewed 715 times ]

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR
Top
 Profile  
 
PostPosted: Fri May 11, 2012 2:18 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
Just found that my IMAC has bootcamp already installed. So I can install Window7 and can start using Windows based programs once i install widows 7

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Fri May 11, 2012 4:53 pm 
Offline
User avatar

Joined: Mon Apr 12, 2010 5:40 pm
Posts: 1894
Location: san francisco bay area
RebecaLynn wrote:
Ok I am finally starting with some basic drawings.


With the drawing here are some specs

102.75" wheel base

151.60" overall length

7.45" front overhang

13.9" rear overhang
69" front track, hub to hub, with 3" offset wheels
65" rear track, hub to hub with 5" offset wheels

I have Hoosier R6 tires listed, but have found both Michelin Pilot and 2 other brands for street use with same basic dimensions.


This is just the flat floor layout and the start to where to build the chassis from.

I can adjust the car for front body work, If I can not run open front wheels, this would give the car more of a DP styling May just built it this way to start with, to ensue the car being able to be raced and driven.


:rofl: :rofl: I just realized that your drawing lists a steering wheel on both sides of the car. .. Must be a trainer.
:cheers:

_________________
"There are times when a broken tool is better than a sound one, or a twisted personality more useful than a whole one.
For instance, a whole beer bottle isn't half the weapon that half a beer bottle is ..." Randall Garrett


Top
 Profile  
 
PostPosted: Fri May 11, 2012 8:22 pm 
Offline
Toyotaphobe
User avatar

Joined: Sat Apr 05, 2008 2:25 am
Posts: 3364
Location: Fort Worth, Texas
oldejack wrote:
:rofl: :rofl: I just realized that your drawing lists a steering wheel on both sides of the car. .. Must be a trainer.
:cheers:



That's his and hers wheels. Saves on the backseat driving.

_________________
mobilito ergo sum
I drive therefore I am

I can explain it to you,
but I can't understand it for you.


Top
 Profile  
 
PostPosted: Fri May 11, 2012 8:33 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
LOL, copy pasted from oneside to the other. I did miss that. I was making notes and reasons for things.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Thu May 17, 2012 8:56 am 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
I have been messing around with several different programs and been working on a more traditional design and a modified version with side pods both using the same base chassis to start with.

Also got word that our other project we and going to be working on has just came out of the molds and the chassis is about read to go. So it should be read to leave the factory in a few weeks, we are a few back on the waiting list so it may take a few for them to have it ready to be delivered as the company is also working on moving in to a new shop at the same time.

My husband has been busy building two new build tables in our shop, one is steel and the second one is made from aluminum. Both are built low to the ground and will be able to have ramps attached to roll a completed rolling chassis free.

We have ordered 2 complete sets all new sets of C6 suspension sets of uprights and control arms with hubs for the front and rear of the chassis. Needed the stock control arms help with mock up of new arms we are planning on building as there has been some issues with stock control arms breaking during competion use.

Also ordered 2 A-Pyler mock-up LS blocks and heads, husband is going to pick up a t-56 from the local junkyard to gut out.

So we can start on mocking things up soon. Which will help with the design work.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Thu May 17, 2012 9:31 am 
Offline
User avatar

Joined: Sat Nov 14, 2009 1:32 am
Posts: 652
Location: Rosser manitoba canada
RebecaLynn wrote:
I have been messing around with several different programs and been working on a more traditional design and a modified version with side pods both using the same base chassis to start with.

Also got word that our other project we and going to be working on has just came out of the molds and the chassis is about read to go. So it should be read to leave the factory in a few weeks, we are a few back on the waiting list so it may take a few for them to have it ready to be delivered as the company is also working on moving in to a new shop at the same time.

My husband has been busy building two new build tables in our shop, one is steel and the second one is made from aluminum. Both are built low to the ground and will be able to have ramps attached to roll a completed rolling chassis free.

We have ordered 2 complete sets all new sets of C6 suspension sets of uprights and control arms with hubs for the front and rear of the chassis. Needed the stock control arms help with mock up of new arms we are planning on building as there has been some issues with stock control arms breaking during competion use.

Also ordered 2 A-Pyler mock-up LS blocks and heads, husband is going to pick up a t-56 from the local junkyard to gut out.

So we can start on mocking things up soon. Which will help with the design work.

So the company is moving to a new shop eh? Sounds like someone may be getting a SLC...............maybe?

_________________
The biggest thing in motocross.


Top
 Profile  
 
PostPosted: Thu May 17, 2012 5:03 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
Yes on a SLC. This is something we have been looking forward to for a while now.

The business is something we are looking into seriously, but we plan on keeping small and personal. The shop would have to stay with idea behind us building cars for the fun and enjoyment of building them. We are not looking at starting a business for making money, but it has to be able to support itself in the short term.

My husband and I both are semi-retired Veterans and do not need the income of the shop to support us, but feel it is a business that we can enjoy and will be there to help others that enjoy working with and building cars. Not sure how it will work out or if it will work out. If not then we will still have the shop space for our own projects and our own enjoyment.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
PostPosted: Thu May 17, 2012 6:56 pm 
Offline

Joined: Sun Apr 08, 2012 11:25 am
Posts: 102
As we have been settling on engine choices for our other project car, as it is getting closer to time to prepare for that build on top of working on this build project.

We decieded to go with a slightly de-turned version of the same motor we are placed on order with Katech Performance.


TRACK ATTACK 500
Bore: 4.165”
Stroke: 4.600”
Displacement: 502ci/8.2L
Horsepower: 812
Torque: 775
Redline: 6200RPM
CR: 14.0:1
Block: RHS aluminum, billet main caps, ARP studs, piston squirters
Crankshaft: 4340 forged steel with ATI damper
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum, hardcoat anodizing, skirt coating, gas porting, and DLC-coated pins
Camshaft: Desert Attack 500-spec solid roller, Jesel lifters and rockers
Cylinder heads: CNC-ported All-Pro with bronze valve guides, ARP studs
Valves: Katech titanium/molybdenum intake, hollow sodium-filled exhaust
Induction: Kinsler vertical with 8 individual throttle bodies
Oiling system: Dailey 5 stage


For this build we are looking to go a little milder and come in around 500hp area. Also with the T-56 magnum transmission we are planning on using has a 700tq rateing, but we are hoping with the lighter weight of this build it will not be an issue.We have not placed an order for either for this project yet, but this is our plans as we are settling in on the chassis design and planning out the build.

We are looking at using a electric power assist system in both builds but two different models by DC Electronics, offered by Flaming River. To go with this we are planning on using a manual rack and pinion from Woodward along with one of there safety column from them.

At this point we are working on the design still, as we slowly start imputing the parts we plan on using to ensure our design will work.

_________________
Having fun and enjoying the ride

1927 Roadster - custom build
1932 Ford, full one off custom build
2008 Corvette Z06
2009 Mustang GT500
2010 Nissan GTR


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2, 3  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Andy Bro and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
POWERED_BY