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NAMRA - Jose Rodriguez Jr. inspired Ferrari P4 Can-Am build


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#26 Pablo

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Posted 13 October 2021 - 08:07 PM

:clapping:


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#27 Mark Onofri

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Posted 14 October 2021 - 07:35 PM

This is as hard core as it gets. Only problem is, I think I short circuited my phone from profusely drooling whilst reading it!!!! MORE,MORE &,MORE !!!!!!!!

#28 Mark Onofri

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Posted 14 October 2021 - 07:35 PM

Please

#29 dc-65x

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Posted 14 October 2021 - 07:58 PM

Thanks for chiming in Pablo and Mark.

 

I did need to add a couple of details to the drop arm. Adding its down stop now is much easier:

 

2-rail chassis (26).JPG

 

Since this chassis won't be disassembled for parts after its first race, I want to keep the hinges from rusting up solid over time. Others have their methods but I prefer the "BLOW HOLE":

 

2-rail chassis (28).JPG

 

The hinge tube can be blown out with 100 psi of compressed air followed by a high pressure WD40 flush.   :dance3:


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#30 Pablo

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Posted 14 October 2021 - 08:52 PM

Looks like a gold bar  :heart:


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#31 Isaac S.

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Posted 14 October 2021 - 08:59 PM

Love that drop arm.  :wub:


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#32 dc-65x

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Posted 15 October 2021 - 08:12 PM

The drop arm is much easier to buff up before the plumber rails are installed. It's interesting, I have a tumbler and was one of the first to share that method here on Slotblog that Mike Steube and PdL taught me. I guess I must enjoy the process of hand polishing because that's all I've been doing for quite a while.

 

Speaking of plumber rails, I need the bat pans before I can make them. I'm using another tonyp approved Team Nutley part. These puppies are .047" thick and along with the 1/16" thick drop arm will give this car plenty of "road hugging weight":

 

2-rail chassis (17).JPG

 

As was common during this cars time, the pans were not cut out for hinge tubes. They sit on top of the pan. I punked out and used Kapton tape on the pans to make sure the hinges didn't get accidently soldered to them. I don't imagine the Pro builders needed to use it as they built a chassis the night before the race on a motel room coffee table.....just skill:

2-rail chassis (19).JPG

 

Here are those plumber rails with the pan hinges soldered on along with that roll of Kapton tape:

 

2-rail chassis (20).JPG


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#33 Mark Onofri

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Posted 16 October 2021 - 07:36 AM

Hmmmmm,Space blanket tape. See Issac, told you it's rocket science.

#34 Isaac S.

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Posted 16 October 2021 - 07:52 AM

:laugh2:


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#35 Phil Smith

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Posted 16 October 2021 - 09:14 AM

Never heard of Kapton tape before. :good:


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#36 Mark Onofri

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Posted 16 October 2021 - 09:51 AM

I had to google it. Used for space blanketing,don't want your satalite to get cold. flexible circuit boards and, it's good to -269°c!(that's where 2 objects can occupy the same space)

#37 dc-65x

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Posted 16 October 2021 - 10:20 AM

Kapton high temperature tape is handy stuff even if you're not planning on a space flight like Captain Kirk.

 

I first showed using it here in a 2008 build:
 

I'm trying out my new Rick's chassis jig. I need to clamp the chassis center section and plumber rails down flat against the block. Then slide the pans against the plumber rails and set the pan hinge tubes ON TOP of the pans. I'm using Rick's guide tongue stud and wing nut and a 5/16" wide clamp I made. The clamp also sets the space between the tubes (notice the funny transparent amber colored tape on the pans blink.gif more on that later ):
 
TonyP1968Plumber039.jpg
 
I couldn't get the tip of the iron between the clamp and drop arm pivot tubes so I just soldered the pan tubes to the plumber cross piece for now:
 
TonyP1968Plumber045.jpg
 
To solder the rest of the pan tube I clamped the plumber rails only and let center section hang down off the end of the bench (This new jig is coming in handy smile.gif ).
 
TonyP1968Plumber040.jpg
 
I used Mike Steube's technique of soldering the tube in halves, watching the color of the solder so that it didn't melt the full length of the joint. It worked great. THANKS MIKE! smile.gif ( You do have Mike's chassis building video right?)
 
TonyP1968Plumber041.jpg
 
TonyP1968Plumber042.jpg
 
The pans do not have a cut out for the hinge tubes, they sit on top of the pans. The first time I soldered the pan tubes onto the plumber rails some solder wicked down and also soldered the tubes onto the pans :shok: blush.gif . I hate it when that happens :rolleyes: . Now for the funny colored tape. It goes by a trade name of Kapton and is very high temperature and very thin. You can Google Kapton and find out were to get it cheapest. It is somewhat expensive but I think the one roll I bought should last the rest of my life. Here is a link to one source:
 
Kapton Tape
 
Here is the bottom of the pan hinge tube. See where the solder wicked down? It would have soldered the tube to the pan again for sure. The Kapton tape didn't even have any marks in it from the heat of soldering smile.gif :
 
TonyP1968Plumber044.jpg
 
Time to spiff up the collateral damage with some sanding and polishing :shok: :laugh2: wink.gif


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#38 Mark Onofri

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Posted 16 October 2021 - 02:09 PM

Glad that you shared that with us. Now I can stop using lampblack (aka plumbers soil).

#39 dc-65x

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Posted 16 October 2021 - 08:07 PM

You bet Mark. Kapton tape came in handy again attaching the 2 plumber rails together.

 

2-rail chassis (30).JPG

 

2-rail chassis (29).JPG

 

I used 3 little strips of 400 grit sandpaper between the plumber rail and frame on both sides. It gives just a little side to side plumber movement:

 

2-rail chassis (35a).JPG

 

Ready to hang those Team Nutley pans:

 

2-rail chassis (32).JPG

 

2-rail chassis (33).JPG


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#40 Isaac S.

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Posted 16 October 2021 - 08:52 PM

Those little bits of sandpaper are smart. I will have to remember that. 


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#41 dc-65x

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Posted 19 October 2021 - 08:51 PM

I decided to hang my pans differently than Mike did. I'm using just 2 hinges instead of 4 and I'm laying my body mount pin tubes along side the hinges to reinforce them.

 

2-rail chassis (37).JPG

 

For my pan downward stops I made mine like Mike's. I used this dental tool to help with the process. Even with this gizmo it takes tweaking to get them made up "korrectly":

 

2-rail chassis (36).JPG

 

2-rail chassis (41).JPG

 

So with that, it's time to assemble the pans and plumber to the center section for the last time. Once this little upward plumber stop is installed the chassis is together for good:

 

2-rail chassis (50).JPG

 

I'm pleased with the completed chassis. It's nice and flat and all the hinges work smoothly.....and it has lots of shiny brass  :crazy:

 

2-rail chassis (43).JPG

 

2-rail chassis (45).JPG

 

2-rail chassis (49).JPG

 

With my old eyes I can't see the details like I can with these closeup photos:

 

2-rail chassis (51).JPG

 

2-rail chassis (52).JPG

 

2-rail chassis (55).JPG

 

I learned as an apprentice machinist how to deburr parts working at the "burr bench". You were supposed to be able to run your hand over the part and not feel sharp, cutting edges.

 

Sharp edges is what you get after you cut a wire with the Dremel. I try to chamfer everything. I can feel if things are smooth but with these photos I see the results and I'm happy with them.

 

Next it's time to finish up the motor.........


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#42 Bill from NH

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Posted 19 October 2021 - 09:14 PM

I decided to hang my pans differently than Mike did. I'm using just 2 hinges instead of 4 and I'm laying my body mount pin tubes along side the hinges to reinforce them.

 

 

 

Rick, this was the standard way we hinged pans with pin tubes on wing car chassis built in the '70s. No problems as long as you stayed out of heavy crashes. :)


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#43 dc-65x

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Posted 20 October 2021 - 11:42 AM

Yup Bill, that turned into the standard procedure for pans. Some builders headed in that direction during the late 60's time period of my build too:

 

MRJV1N8p6Top.jpg

 

And speaking of 70's cars, here's a weight comparison of my early 1969 chassis:

 

2-rail chassis (25).JPG

 

Here is an early 1970's Lee Gilbert - Car Model Magazine build article style chassis:

 

2-rail chassis (35).JPG

 

That's quite a weight difference.  :shok:

 

 


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#44 Don Weaver

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Posted 20 October 2021 - 01:43 PM

That be purdy  :good: !!


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#45 Isaac S.

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Posted 20 October 2021 - 03:00 PM

Those thinner pans and drop arm make a big difference.
Isaac Santonastaso

#46 dc-65x

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Posted 20 October 2021 - 08:43 PM

Thanks Don.

 

Isaac, I was surprised at how heavy the chassis felt when I got it finished. Those pans and drop arm a big percentage of the chassis weight.

 

For an armature I found this "mystery arm":

 

namra motor (7).JPG

 

It's a fairly heavy single wind.....maybe an S25:

 

namra motor (6).JPG

 

The commutator has been cut previously at least once (probably more) and was in bad shape from hard running. I re-cut it and brought it back to life....at least for limited running:

 

namra motor (8).JPG


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#47 Isaac S.

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Posted 21 October 2021 - 08:11 AM

Your going to stick THAT into your early '69 setup! Sounds fun and fast.  :crazy: Looks like C-can era to me but should work good.  :good:


Isaac Santonastaso

#48 dc-65x

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Posted 21 October 2021 - 10:34 AM

Hi Isaac,
 
The late 1969 B-can era had similar arms too. Here's an example:
 

My son is working today and won't be here for Thanksgiving dinner until late so I may as well keep playing wink.gif .
 
Next is a little-used Mura B Production motor, first generation I believe:
 
motors-053.jpg
 
It's had a soldering iron melt into the end bell and the can is all scratched up. I think it will be a good candidate for a complete NOS type restoration. Let's crack her open:
 
motors-054.jpg
 
All the parts are ready to go with new brushes and endbell. The cans stripped and ready for a coat of gloss black paint and to have the Mura sticker applied. The armature looks like new. It's a single wind of pretty big wire and meters .2 ohms:
 
motors-055.jpg
 
Next...


The arm I'm using is what I could come up with, "You build a vintage car with the parts you have, not the parts you wish you had".

Have you seen this thread?

eBay Motors


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#49 Mark Onofri

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Posted 21 October 2021 - 05:38 PM

That was a very interesting intermission,not that that this thread needed one. Anxiously awaiting that gorgeous body!

#50 Isaac S.

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Posted 21 October 2021 - 05:39 PM

True. Thats a great thread, learned a lot from it.
Isaac Santonastaso





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