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Learning how to build Lotus Seven replicas...together!
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PostPosted: November 26, 2013, 12:24 am 
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Last edited by maccos on November 29, 2016, 7:51 pm, edited 1 time in total.

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PostPosted: November 26, 2013, 11:36 am 
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Joined: October 13, 2011, 9:19 am
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Location: Denver Co
maccos wrote:
mjalaly- right now the plan is to place the intercooler between the seats, where the intake is normally located on the At-om. I chose to put it there due to ease of plumbing. The main drawback is that if a windshield is installed, the intercooler will not see much ram air. There are a plethora of other options to place it or use a water/air intercooler, but they are all more complex and costly, so I am choosing the simple route for now.


Yeah i ran into the same issue on mine. I can easily fit a A2W intercooler on there but i am worried about heat soak. The other options i have considered would be right on top of the engine (Subaru style), off to a cooling duct in front of the rear tire or a large one where the exhaust would normally go (under the engine cover hoop).

looking good man

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You can build the most awesome thing in the world but at some point, an 80yr old man in a crx is probably going kick your butt on the track... don't ask me how I know.


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PostPosted: November 27, 2013, 11:44 pm 
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PostPosted: November 28, 2013, 12:44 am 
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PostPosted: November 28, 2013, 9:12 am 
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Joined: September 22, 2005, 8:12 am
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Location: 4AGE in S.E. Michigan
That's a mile stone in the build. :lol: :lol: :lol:
Making great progress :cheers:
Dave W


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PostPosted: November 28, 2013, 10:56 am 
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You look like one happy camper!! She sounded purdy... What's left to do before a test drive?

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PostPosted: November 28, 2013, 11:30 am 
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PostPosted: December 1, 2013, 10:02 pm 
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PostPosted: December 9, 2013, 12:50 am 
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PostPosted: December 9, 2013, 12:34 pm 
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Location: Denver Co
maccos wrote:
Looking for some suggestions...

Does anyone have a good source for mandrel bent tubing. For the roll hoop that the intercooler sits behind, I'm striking out on vendors that have tooling for 2.25" tubing with a 6" CLR. Anyone have good leads for this?

Also, I have the intercooler design finished and have gotten one quote, but the price is a bit high (Bell Intercooler) so if you have any custom intercooler sources, let me know.

Does anyone know of any products or ideas that are used to neatly run flexible brake hose (like ss braided lines) alone tubes. (like the control arm tubes) I know they make some for the front A-arms on sport quads (ATV's) but they are too big, bulky & expensive. Looking for something better than a zip-tie and wont cause rubbing to wear the paint away.

Lastly, any recommendations for good (inexpensive) sources for SS braided brake lines? (custom obviously)

This weekend I received the brackets for mounting the pedals so I tacked them in and test drove them, fits good!
Measured up the lengths for the axles so they are on order now.

Lathed out a bunch (bunch meaning it took me most of a day) of bushings for the front control arms.
Welded and mounted the aluminum ECU enclosure (a little better than taping it to the frame). The ECU slides in from the top, and is a snugly held in place with foam lining the inside of the enclosure.
Also I got the other tie rod end so I could for the 1st time steer the front wheels. Much to my surprise, there is a lot of anti-ackermann in the steering....hmmmm. Not sure what is going on. I havent looked at it much yet, but it clearly does not follow the geometry in my CAD model at the moment. I'll have to get back to that one. I've read ackermann to be argued both ways so I guess Im not too worried, just confused as why it not coming out as expected.

Measured the lengths needed for the brake lines, (used extension cords to emulate the routing)



For the tubing I would call around to some 4x4 shops. Some have mandrel capabilities.

Are you looking for brake hose clamps or weld on brackets?

intercooler
Try MacAutosport (http://www.macautosport.com/). They can get a cheap core and weld it up as you need. Also you can find something cheap on CX racing and have some one modify it. I would also suggest a DSM side mount or Saab 900 intercooler if you are putting it in the At-om location. maybe one of these
http://www.ebay.com/itm/Winner-Racing-h ... 4897.l4275
http://www.ebay.com/itm/ALUMINUM-14x9X4 ... 4897.l4275

Brake lines
http://www.technafitstore.com/3-Stainle ... custom.htm

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You can build the most awesome thing in the world but at some point, an 80yr old man in a crx is probably going kick your butt on the track... don't ask me how I know.


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PostPosted: December 15, 2013, 9:34 pm 
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PostPosted: December 27, 2013, 10:51 pm 
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Nice progress Maccos.. coming along nicely- at this pace you'll be ready for the upcoming warm weather- woohoo :drive:

Not to be too self-serving, but do you have any more details on making your LNF run standalone? I've just received my LNF from the wrecker and will be sorting wiring issues soon.. I've been in touch with enginewiring.com to clean up my harness (I suck at wiring), and I've been in touch with Trifecta to reprogram the ECU (as you posted earlier)... did you go through Trifecta on your ECM?

Any details you can think to post would be appreciated.. :cheers:

-keep us posted on your progress-

-ccrunner

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My '72 Honda N600 build log (bike engine in a microcar)...
http://www.locostusa.com/forums/viewtop ... 36&t=14452

My '63 Volvo 1800 with a turbo inline 4 build log (LNF Ecotec compliments a Svelte Swede)
http://locostusa.com/forums/viewtopic.php?f=36&t=16309

My '59 Berkeley SE492 build log (bike engine in a microcar)... "A Berkeley With Bite!"


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PostPosted: December 30, 2013, 12:55 am 
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PostPosted: December 30, 2013, 11:57 am 
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As you stated- very few seem to be using the LNF as a standalone.. I almost went with an LSJ until after a bit more digging I learned the LNF could be hacked... probably like you, I wanted that 'out of the box' torque curve..

I'll send you a PM so as not to bog down your build log with specific wiring questions :roll:

-ccrunner

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My '72 Honda N600 build log (bike engine in a microcar)...
http://www.locostusa.com/forums/viewtop ... 36&t=14452

My '63 Volvo 1800 with a turbo inline 4 build log (LNF Ecotec compliments a Svelte Swede)
http://locostusa.com/forums/viewtopic.php?f=36&t=16309

My '59 Berkeley SE492 build log (bike engine in a microcar)... "A Berkeley With Bite!"


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