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Improvised 1/32 chassis


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#1 Miezis

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Posted 26 July 2016 - 03:17 PM

Hello everyone!  ^_^
 
After some while, I finally started a build of improvised chassis for Carrera track. It will be from PCB center section, brass side pans, guide tounge and mounts for oilities. The width of car will be 54mm. (~ 2.12598 inch), so that it would not slide off the Carrera track.
 
Also for experimentation I started two chassis at the same time - one center section will be from phenolic PCB material (1mm or ~0.040inch) and the other one from fiberglass PCB material (1.6mm or ~0.063inch). Phenolic chassis will be about 0.02inch longer.
 
Gathered some materials from local RC store:
 
i1.jpg
 
Put out my design to phenolic PCB material:
 
i2.jpg
 
Put out my design to fiberglass PCB material:
 
i3.jpg
 
Phenolic and fiberglass PCB in one shot:
 
i4.jpg
 
I cut them out using my dremel and cut off wheels (408) the result was not perfect, but reasonable (will need to file those lines though):
 
i5.jpg
 
Phenolic center section:
 
i6.jpg
 
Fiberglass center section:
 
i7.jpg
 
As you probably see from the pictures - it'll be an anglewinder. I guess I should get myself a vise, it should help me do straighter lines, when cutting.
 
So it's a start. Constructive criticism is very welcome, as I'm learning this again...
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Mantas Miežinas




#2 SpeedyNH

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Posted 26 July 2016 - 05:18 PM

nice one, Miezis. we used to make circuit board chassis for 1/24 Eurosport cars over here in the US, but we never put brass pans on 'em. did use metal reinforcement for the guide holder, though, and we should have added some to the rear uprights.  

i'll be interested to see the progress and results.

I didn't realize that you even Had slotcar racing in Lithuania! that's great. where do you race? just curious.

speedy


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#3 Miezis

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Posted 28 July 2016 - 02:21 PM

We have four tracks in Lithuania that are in use, all of the are in youth centers and only one of them meets ISRA requirements. Personally I play around with carrera set at home. Although I plan to rebuild my old Production 24 car and participate in Baltic States Championship race, which will be held in Jelgava, Latvia on August 19-21.

 

Here's my favorite temporary circuit:

 

IMG_20160619_1659553.jpg

 

IMG_20160619_1700062.jpg

 

In the last pic you see that there is a power relay module attached to track and some wires under the track - that's my home brew race direction hardware, the software was a project used for my bachelor thesis defense to get a degree in software engineering.

 

Maybe you have some pictures of those circuit board chassis for Eurosport 24?


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Mantas Miežinas

#4 MSwiss

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Posted 28 July 2016 - 02:40 PM

Hi Mantas,

Good to see you building.

 

The issue with your chassis is if are not using magnets for handling, making it from something light will always be a CG compromise.

 

IOW, you'll probably have to add weight, and said weight will never be as low as if you just cut the plate out from brass, to begin with.

 

PS - For those not aware, Mantas was in Chicago on business about 6 months ago, and raced a few weekends at my raceway, demonstrating some solid driving skills, with big tired, Hardbody cars, that he wasn't familiar with.


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Mike Swiss
 
IRRA® Components Committee Chairman
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17B West Ogden AveWestmont, IL 60559, ( 708) 203-8003
mikeswiss86@hotmail.com (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
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#5 Miezis

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Posted 28 July 2016 - 02:58 PM

Hey Mike!  ^_^

 

Side pans will be out of brass, so I guess I'll play with weight on them (will try to drill out some holes in the back to adjust the center of gravity).

 

PS. Had a great time at your raceway!  :good:


Mantas Miežinas

#6 MSwiss

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Posted 28 July 2016 - 03:22 PM

With brass pans, it makes way more sense.


Mike Swiss
 
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990)
Eight-time G7 King track single lap world record holder (pointless era - LOL) 
17B West Ogden AveWestmont, IL 60559, ( 708) 203-8003
mikeswiss86@hotmail.com (also my PayPal address) 
Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#7 SpeedyNH

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Posted 28 July 2016 - 07:09 PM

think that I have a couple of the bare chassis left. right now I'm on travel.


Steve Lang

#8 Dennis David

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Posted 28 July 2016 - 09:27 PM

Running on plastic track is a funny thing and a lot of weight either down low or any where for that matter doesn't work the same way as on wood. The issue is the lack of grip is made worse with a heavy chassis.

Tire choice and preparation is critical and we found that weight distribution is also important. When we race Group C the inline pod handled better than either the angle winder or sidewinder orientation. Plus a little weight added before the rear axle was best.
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