Create a Porsche 934 replica in 4 steps

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XLR8
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Create a Porsche 934 replica in 4 steps

Post by XLR8 »

Step 1: Chassis Design.
Porsche 934 1.jpg
Porsche 934 2.jpg
Porsche 934 3.jpg
Porsche 934 4.jpg
wheel alignment.jpg
Porsche 934 6.jpg
Porsche 934 7.jpg
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

Step 2: Chassis Components.

AE Caster Blocks
AE SC10 Caster Blocks 25 deg. 7919.JPG
AE Steering Blocks
AE SC10 Steering Blocks 9880.JPG
Traxxas 4-Tec Steering Rack assembly
4-Tec steering Bellcranks 8343 .JPG
Traxxas E-Revo 1/16 Drive Shafts
E-Revo 1-16 Drive shafts 7151.JPG
E-Revo 1/16 Drive Hexes
E-Revo 1-16 Drive Hexes 7154.JPG
Tamiya CVA Mini Shocks
Tamiya CVA Mini Shock 53619.JPG
Metal Rod Ends (ebay)
rod ends.JPG
Austar 3-Gear transmission
Austar 3-gear transmission.JPG
Printed Parts (front bulkhead, front and rear arms)
P1010003.JPG
Tamiya Wheels and Tires
Tamiya wheels.JPG
BBS mesh wheels from ebay seller (for display)

Bearings from Avid
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

Step 3: Chassis Fabrication and Assembly.
P1010004.JPG
P1010012.JPG
P1010016.JPG
P1010017.JPG
P1010020.JPG
P1010028.JPG
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by RogueIV »

I feel like there's a lot of substeps in step 1 :lol:

Looking good.
Consistency is the key I keep misplacing.

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

Step 4: Body Paint and Final Details.
P1010067.JPG
P1010076.JPG
P1010059.JPG
P1010078.JPG
P1010079.JPG
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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

RogueIV wrote: Thu Apr 27, 2023 2:37 am I feel like there's a lot of substeps in step 1 :lol:

Looking good.
Thanks. I started this project between Christmas and New Year's so I've forgotten most of the substeps. :oops:

Often times, I'll document a project intending to post it on the message boards at some point, then I'll start a new project and never get around to posting the prior one. I wanted to get this one up as quickly as possible so documentation wasn't a wasted effort.

I've driven the car a few times and it's a hoot. :D

I have a 993 in the works - similar chassis.
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by juicedcoupe »

For my curiosity, was there a specific reason that you chose the B4 hex front? Already have it?

If starting from scratch, it'd seem better to start with something more readily available, like the Custom Works kit or something current.
Always looking for new and interesting ways to waste money.

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

juicedcoupe wrote: Thu Apr 27, 2023 4:15 am For my curiosity, was there a specific reason that you chose the B4 hex front? Already have it?

If starting from scratch, it'd seem better to start with something more readily available, like the Custom Works kit or something current.
Yes, I was trying to work with parts already on-hand. I had steering and caster blocks as spares for my SC10.

For the 993 build, since the 9880 B4 steering blocks are discontinued, I've switched to Traxxas 3636 (for their Bandit). The 7919 caster blocks are still available from AE so I'll use them again. Also, the remaining front suspension parts are designed to work with AE caster blocks. IIRC, the Traxxas caster blocks would require longer arms and other changes to retain camber rise, avoid bump-steer, etc. I bought two complete sets of printed parts (for two cars) which included arms so I really don't want to re-design them to accommodate different caster blocks.
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by RogueIV »

XLR8 wrote: Thu Apr 27, 2023 3:21 am
RogueIV wrote: Thu Apr 27, 2023 2:37 am I feel like there's a lot of substeps in step 1 :lol:

Looking good.
Thanks. I started this project between Christmas and New Year's so I've forgotten most of the substeps. :oops:

Often times, I'll document a project intending to post it on the message boards at some point, then I'll start a new project and never get around to posting the prior one. I wanted to get this one up as quickly as possible so documentation wasn't a wasted effort.

I've driven the car a few times and it's a hoot. :D

I have a 993 in the works - similar chassis.
I know the feeling. got a bunch of random pictures of things I've worked on and haven't had the time to write them up.
Consistency is the key I keep misplacing.

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Re: Create a Porsche 934 replica in 4 steps

Post by radioactivity »

A really neat amalgam of parts from several manufacturers.
Great engineering.
And the timeless nature of the body along with the wheels, paint, graphics and lights it's just so realistic.

Well done!

Chuck
Hydrodip how to https://www.rc10talk.com/viewtopic.php?f=62&t=42727
When all you have is a hammer everything looks like a nail :wink:

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Re: Create a Porsche 934 replica in 4 steps

Post by radioactivity »

Oh, can't forget the motor :D :D
It's RadioActive!

Chuck
Hydrodip how to https://www.rc10talk.com/viewtopic.php?f=62&t=42727
When all you have is a hammer everything looks like a nail :wink:

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

Thanks Chuck!

Back in the day, I designed and built a rear motor, straight axle, pan car for oval racing - I wanted to try something different. It featured a 4-link rear suspension and beam front axle arrangement. I spent weeks building it and raced it one time. I really didn't like the handling so I pulled the motor, electronics, shocks etc., for use in a more conventional pan car. I was a dirt poor college student a the time and couldn't afford running gear for two cars. :lol:

I was rummaging around in the attic a few months ago and found the parts for that rear motor car and one day I'll put it back together.

Scratch building is the most enjoyable part of the RC hobby for me. :D
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by n2racn »

Did you design the printed parts and have them printed? This is so cool, I've been wanting to cut down an old tub and do something like this.

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

n2racn wrote: Fri Apr 28, 2023 4:19 pm Did you design the printed parts and have them printed? This is so cool, I've been wanting to cut down an old tub and do something like this.
Thanks and welcome aboard. :D
Suspension arms are difficult for me to make in my shop so it's much easier to have them printed.

Initially, I'd planned to build an RC10DS for this car but Tamiya's 934 is very short wheelbase and I think it would be difficult to make a DS short enough to fit that body.
Also, the full size Porsche's use trailing arm rear suspension so I wanted to include that feature.
Plus, I was looking for an excuse to create a chassis from scratch. :wink:
Doug

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Re: Create a Porsche 934 replica in 4 steps

Post by XLR8 »

The rain has stopped so I'm headed back to the tennis court tomorrow.
I'll be trying a new motor.
G14L.jpeg
Doug

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