Ed's 'StreetRunner' Quad Build

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Sep 12, 2012
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Apple Valley, California, USA
Bling! Day!

Set about making a templet for the spinner.

Double layered tape for finding hole spacing



Transfering to cardboard



Verifying and making measurements exact



Template cut and checked for fit, centerpiece mock-up piece cut and verified for offset.



Tomorrow I hope to turn this template into a metal adapter bracket.

 
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Step One


Step Two


Step Three - minus the crossbar for attaching the spinner threaded ring


Step four-A sneak peek.
 
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here is the only switches I found

 
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one minor issue is you are taking a volt reading of the 12volt output. Should be the 48volt output.
you will read 12v all day long even if the 48v battery is at 40v or less
Thanks for your input. I brought my post here.
I don't want to highjack your thread with my build.

You may be right about the need for the 5-gang switch. The schematic was prepared in March of last year. Things have changed as the construction phase has developed.

The closer I get to completion, the electrical may change from what I had envisioned in the early design stage.

For example; the wiring for the voltmeter. I can't recall why I even drew it that way. Placement and use of the 5-gang switches were recently brought into question anyway. What seemed like a neat idea back a while doesn't seem to be as appealing now. The 5-gang really doesn't fit well into the picture.

The 5-gang was originally going into the cover over the battery, but it is too far away to reach easily. Then I wanted to place the toggles overhead, that still is an option.
The latest idea of putting the switches in front of the driver doesn't appeal to me either.



Another option might be this


or this

 
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why does the gas pedal look backwards?
If you use a relay then all the accessories are activared at 1 time. turn the ignition switch off then all are disconnected from battery.
In the link I posted it has a source for a 6pst relay
 
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why does the gas pedal look backwards?
If you use a relay then all the accessories are activared at 1 time. turn the ignition switch off then all are disconnected from battery.
In the link I posted it has a source for a 6pst relay
Ha! Ha! I 'almost' made comment about that throttle being backward. It's backward because - it is. It just happens to be sitting there.
 
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here is a link to the relay that has 5 positions
file:///C:/Users/Doug/Downloads/mech_eng_sfs%20(1).pdf
 
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OK, this project is complete.

Just a couple more pics of how I secured the center portion.
Not shown is the nut that I welded on the reverse side of the inner plate.



I screwed in stop screws after this photo was taken.
It's needed to keep the ring from turning when trying to unscrew the spinners.

 
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The rain from up north has finally arrived at our house.

Did get some work done on the steering column this morning.
I have ordered an (old school type) column mount turn signal switch.

That reminded me that I wanted to hide the wiring down the steering column.
So out to my pile of donor scrap metal. Found a 2" top tube from a patio swing set.
It fits perfectly over the existing column (snug at the bottom) and leaves about a 1/4" +/- inside for feeding the wires through

Cutting off the 19 1/4" length


Enlarging the top plate that I will weld to ...you guessed it, the top. 😉
The center needed to be enlarged to fit the diameter of the existing column.
This pic gives you a good idea of the extra space that will be inside.



The lighting isn't great here, but this is a before pic.
If you click on the pic it will give you the opportunity to enlarge which will make it much clearer



And the after pic. I gained overall about a 1/2" in diameter.
As with this whole build, I always have an eye for keeping this proportioned right.
So the end product not only will hide the wires from the turn signal, it also gives it a more robust look...IMO.

 
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I ran the motor today and it stops intermintly.
ran without a chain and motor makes a noise like something is rubbing inside.
Have you encountered same?
 
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I ran the motor today and it stops intermintly.
ran without a chain and motor makes a noise like something is rubbing inside.
Have you encountered same?
Not as you describe it.
The intermittent stopping sounds like a short.
Or maybe when it stops it is a flat spot???

I really have no clue at this moment.
Though I am trying to recall anything similar on my motors.
It could be a characteristic of that type of motor.

Does it do it in reverse?
Have you put it under too much load? Bent shaft?
Bad bearing?
Under what circumstance is it stopping?
How have you been running the motor up until the intermittent stopping occurred?


I'm recalling that one of the motors had such a sound, though extremely minor.
If I recall it was like a high spot that was hitting on each revolution of the shaft.
I will try to remember to check the next time I dismantle my set.

Right now I'm working on locating and wiring up my 12v converter.
 
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If it is a mid-drive motor they do often make a noise. It is usually the drive gears.
I know that people do take their Bafang units apart (main gear-case off) and re-grease the gears (for example).
You are not having much luck with this. :(
 
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It sounded just fine before I tack welded some 16g strips on the motor adjustment skids.
I recall? something about welding near a brushless motor?
I may have affected the magnets inside the moytor.
yes it sounds like a flat spot but I removed the chain and now it dosen't stall but makes a rattling kinda noise.
Ordered a new motor from electric schooters and will see.
Am not doing any other alterations on cart until I get it running right.
Had an idea about what would it take to build an actual "golf cart" but using Li-po4 batteries or Li-ion batteries. 48v seems good
use actual golf cart wheels, a steering system such as what Ed has on his hot rod. Leaf springs on all four corners. Use a saminga differential or two motors as Ed has.
Frame made of 2x3 box steel, two seats and body same as golf cart.
The advantage would be lighter weight, less battery maintence, more efficient.
 
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It sounded just fine before I tack welded some 16g strips on the motor adjustment skids.
I recall? something about welding near a brushless motor?
I may have affected the magnets inside the moytor.
yes it sounds like a flat spot but I removed the chain and now it dosen't stall but makes a rattling kinda noise.
Ordered a new motor from electric schooters and will see.
Am not doing any other alterations on cart until I get it running right.
Had an idea about what would it take to build an actual "golf cart" but using Li-po4 batteries or Li-ion batteries. 48v seems good
use actual golf cart wheels, a steering system such as what Ed has on his hot rod. Leaf springs on all four corners. Use a saminga differential or two motors as Ed has.
Frame made of 2x3 box steel, two seats and body same as golf cart.
The advantage would be lighter weight, less battery maintence, more efficient.
About building your own golf cart.

Lessons I've learned from my build.


Weight is surprisingly deceptive.
I was also going to use a leave spring just for the front axle.
I got two sets from an old travel trailer. Small in size, and would have fit just about right, BUT, they weighed a ton.
I decided that to try and make a sprung suspension wasn't practical for my build.
I thought that using sprung/cushioned seating may be better.
And I found that with no spring suspension my car rides quite well.

I wasn't wanting to build yet another golf cart, so my design is quite different.
I'm up to 550 +/- pounds now. Much of that obviously is in the body.
My battery of choice weighs 70-ish pounds. But I calculated that it would give me the reliability I desired.
In fact, it has been idle (not charged) for about a year and a half and still registers 55.7 volts as of yesterday.

I have most of the weight-gaining features installed, so I'm hoping for less than 600 pounds total.
2x3 boxed steel may be a bit overkill and will add weight to your project.
That size is normally used on a real car of the hot rod, T Bucket styling.
I'm using 1x2x.065

The idea of using an old golf cart that is mechanically OK but seen its last golf course had crossed my mind.
I visited a golf cart salvage yard near me and looked at some options. Many ideas and parts came to mind.
I lifted just the rear differential and that pretty much changed my mind, for this project anyway.

I think it would be fun to use an old golf cart, tear it apart and use the parts for a completely new idea.
So go for it, but remember that weight is deceptive. I know my bathroom scale lies, I just know it does.
 
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Getting near time to put lights on this project.

I've been scouring the internet, trying to find light assemblies that won't cost me the price of this whole project.
I find there are virtually two sizes available in the bullet style, I want. 7" and 5 3/4" diameters.

I ordered a set of 7" but canceled it soon after because I thought they would be too large.

I have cut out mockups to add visualization.
With the mockups, they are OK I suppose. Hot rods of the past have often had oversized lights.
It gives it a cartoonish look, which is OK with me. It adds character.


Still looking





Also made a 5 3/4" size to match up against the 7".
They come primarily as motorcycle size lights.

 
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The smaller ones look big enough to me. The larger ones are definitely in the cartoon sizing category. I'd suggest either will do depending on what comes at the right price.
 
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