LocostUSA.com

Learning how to build Lotus Seven replicas...together!
It is currently Sun Nov 23, 2014 12:57 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 309 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6 ... 21  Next
Author Message
 Post subject:
PostPosted: Wed Oct 01, 2008 9:00 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
The drivetrain was removed yesterday. The poor thing has no heart or hind legs.


Attachments:
Mazda parts 008.jpg
Mazda parts 008.jpg [ 49.21 KiB | Viewed 2700 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 01, 2008 9:02 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
A well running stock Mazda rotary 12A. Runs like a champ. Great development motor for the chassis.


Attachments:
Mazda parts 004.jpg
Mazda parts 004.jpg [ 48.67 KiB | Viewed 2699 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 01, 2008 9:08 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
The main reason I'm not getting much done. Me at SCCA Solo National Championships in Topeka Sept 16th finishing the West course. I am co-driving in G Stock. Likely next year also. I hope to have my Seven on track by season start 2010.


Attachments:
SCCA Solo Natl.jpeg
SCCA Solo Natl.jpeg [ 61.17 KiB | Viewed 2693 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Tue Oct 21, 2008 2:40 pm 
Offline
User avatar

Joined: Sun Oct 15, 2006 11:15 am
Posts: 870
Hey Locofin,

Love your chassis !!!

Are you still planning to use the Pinto/MustangII spindles ?

What size of of disc are planing to use ?... Your right on the lack of need of big brakes... I know our current setup of 10.25 and Dynalite 4 pistons is a big No...No...with the Diamonds wheels...

Still not sure if I'll be running the locost at the Nationals next year but 2010 is for sure...

Cheers,

Fred


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 22, 2008 8:18 am 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
Yes. Standard OEM Mustang II spindles with Speedway upper adjustable control arms (race stock car parts). Lower arms will custom made.

Planning to start with stock sized brakes also. Just need good pads. Also planning 13x10 Diamond wheels with about 6" backspace. Should fit over stock brakes front and rear and clear the suspension parts.

I am working on the rear axle right now. Just ground off the old bracketry cleaned and painted it this past weekend. It is a stock Mazda GSL with a LSD and i think a 4:10 ratio. The design is a three link with a panhard bar, simple and well suited for what I need. Stock rear disc brakes will also be retained. Only using good brakes pads and braided steel lines along with a dual master cyl and Wilwood balance bar arrangement. I have the Wilwood pedal assy already. I just need to figure out what size master cylinders to use.

Looking forward to getting more stuff done since the solo season is over for this year.

...mark

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356


Top
 Profile  
 
 Post subject:
PostPosted: Sun Nov 09, 2008 10:11 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
Put motor in the chassis for the first time. It is offset to the passenger side as much as possible. About 65 mm from the center line. Should help with balance.


Attachments:
Engine 11-7-08.jpg
Engine 11-7-08.jpg [ 85.09 KiB | Viewed 2277 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Sun Nov 09, 2008 10:18 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
More pics of engine. Note the motor is also set back about 20 cm also. Benefits of of building your own chassis.


Attachments:
Engine 4 11-7-08.jpg
Engine 4 11-7-08.jpg [ 56.03 KiB | Viewed 2275 times ]
Engine 3 11-7-08.jpg
Engine 3 11-7-08.jpg [ 55.86 KiB | Viewed 2274 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Sun Nov 09, 2008 10:20 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
Hockey pucks for motor mounts. Very firm (and low-cost)


Attachments:
Motor Mounts 11-7-08.jpg
Motor Mounts 11-7-08.jpg [ 51.11 KiB | Viewed 2272 times ]

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356
Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 12:03 am 
Offline
User avatar

Joined: Fri Feb 29, 2008 7:15 pm
Posts: 151
Location: Denver, Colorado
Be careful with the hockey pucks - I used them on a 914 back in the day, and they ended up splitting after a few track days. It may work for you though. I used them in a tranny mount on a tube frame rear with some plates cut to fit the pucks acting as big washers.

Hope that helps!
Randy


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 9:13 am 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
Randy,

Thanks for the heads up. If I have problems I will go with aluminium solid mounts. I did leave the stock tranny mount rubber isolator intact.

...mark

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 9:53 am 
Offline
Automotive Encyclopedia
User avatar

Joined: Fri Dec 22, 2006 2:05 pm
Posts: 4847
What angle will the driveshaft be operated at relative to the pinion and output shaft? Are you using cv joints? The higher the expected shaft rpm, the less the angle needs to be using ujoints.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 11:28 am 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
Horizontally = 3.179 deg
Vertically = less than 2 deg @ ride height

Fortunately the 1st get RX7 pinion is offset to the passenger side also minimizing the angle significantly.

Being a track only autocross car driven less than 60 mins on track for a season, u joints should last quite awhile.

Should be OK???

...mark

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 2:23 pm 
Offline
Automotive Encyclopedia
User avatar

Joined: Fri Dec 22, 2006 2:05 pm
Posts: 4847
I suppose it will be okay for that. If the angles don't cancel during load transitions from deflection in the diff, trans, or engine mounts, the temporary vibration may be pretty bad.

Something else has just occured to me. Are you adding a torque link? With the engine mounts so close together and parallel, the engine and trans will have very little resistance to rocking from side to side without a strong torque link.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 10, 2008 3:46 pm 
Offline
User avatar

Joined: Fri Oct 27, 2006 3:29 pm
Posts: 331
Location: Indiana
A torque link would be easy enough to add. Thanks, good idea. Our start launches could get kind of hairy with sticky 10" wide race slicks.

Probably will beef up the u joints too. The drive shaft is custom made anyway.

_________________
Building a whole car from scratch is a 1,000 little tasks, done 1 task at a time, while thinking 10 tasks ahead, then redoing it anyway.

SCCA D Mod autocross special. Scratch-Build completed 2013. Blew-up engine in 2014. Re-engineering & Rebuilding for 2015.
South Bend Region SCCA

Link to my build log:
http://www.locostusa.com/forums/viewtopic.php?f=35&t=3356


Top
 Profile  
 
 Post subject:
PostPosted: Tue Nov 11, 2008 7:33 pm 
Offline
User avatar

Joined: Sun Oct 15, 2006 11:15 am
Posts: 870
Nice Work Mark,

Offset motor makes a lot of sense for Solo 2 and no passengers.

Keep em comming.

Cheers,

Fred


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 309 posts ]  Go to page Previous  1, 2, 3, 4, 5, 6 ... 21  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: RoyzMG, STranger 7 and 4 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