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  #41  
Old 03-19-2018, 04:23 AM
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Originally Posted by anickode View Post
The ARGO 8x8 we used to have at work had a Vanguard v twin with a torque converter driving a single FNR transaxle like you'd find in a John Deere gator, with an open differential driving the front set of wheels.

The rest of the wheels were all on stub shafts, Daisy chained together with sprockets and chain, each one driving the one behind it.

There was one brake on each side of the transaxle, operated independently by a pair of master cylinders attached to the control levers. Pull the right one to turn right, pull the left one to turn left, pull both to stop. Braking power, like drive power, was transmitted to all the rest of the wheels via the chains. If the chains broke (they never did as they were massively oversized) you still had brakes on the front wheels.

It did not have true skid steering where the two sides can be turned opposite directions simultaneously.

This will be very similar the the setup I intend to use.
Im on 1" Shafts as Axles & 08B or 1/2" Chain

Still need to source a trans-axle, but this is a "minor" detail..
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  #42  
Old 03-19-2018, 11:03 PM
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Some progress...
The basic chassis design, cut from 1/4" mild steel.
Wheel hubs & axle collars.



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  #43  
Old 03-19-2018, 11:43 PM
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Looking good!
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  #44  
Old 03-20-2018, 04:14 AM
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Looking good!
Need to move this thread to build log?
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  #45  
Old 03-20-2018, 06:49 AM
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This is going to be great.
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  #46  
Old 03-21-2018, 09:22 AM
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Suff happening in my workshop...http://cloud.tapatalk.com/s/5ab2786b...319_191457.mp4

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Old 03-21-2018, 09:38 AM
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Sprockets on top of sprockets, with a side of sprockets.
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  #48  
Old 03-31-2018, 11:28 PM
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Standard 8" Golfkart rim & tire, this is 2 of 6. Golfkart rims are easily to come by, tires are interchangeable with ATV.



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  #49  
Old 04-08-2018, 09:37 AM
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Some materials arrived, and some progress was made...

Hollowbar 1"id 2"od
Collars for the wheel hubs
1" EN8 shafts
6 pieces x 400mm long axles
Bolts & Nuts
M12 40 HT + Nylocks...

Budget for the month spent..😣

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  #50  
Old 04-09-2018, 06:34 AM
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Fantastic
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  #51  
Old 05-01-2018, 03:13 AM
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More stuff to report..

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  #52  
Old 06-17-2018, 01:07 AM
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Evolution

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  #53  
Old 07-04-2018, 11:08 PM
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Question

Gear ratio:
Engine:
10HP 450cc Diesel
TAV30 10 tooth
Jackshift 57
Jackshift 20
Axles 25
Wheels 18"


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Old 07-05-2018, 12:38 AM
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Quote:
Originally Posted by andrecht View Post
Question

Gear ratio:
Engine:
10HP 450cc Diesel
TAV30 10 tooth
Jackshift 57
Jackshift 20
Axles 25
Wheels 18"


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Is it engine 10 going to JS 57 to JS 20 to axle 25? If so, that gives you a ratio of 7.125:1

I would definitely not go any higher than that. You could probably go a bit lower though. Your kart is going to be heavy. On the other hand, it IS a diesel engine which generally puts out a lot more torque
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  #55  
Old 07-05-2018, 10:32 AM
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7.125:1 is what im aiming for.
I reckon the diesel should overcome the additional weight.

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  #56  
Old 07-29-2018, 11:18 AM
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Tapered crank shaft machined down to 3/4". Key way cut with a pencil grinder.
New 08B 10 tooth drilled, split and key way filed by hand.
Epic struggle to get the TAV2 30 mounted onto the diesel.
Had to re-tap all four mounting holes. Made a custom shallow tap to carefully cut new threads into the block.




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  #57  
Old 07-29-2018, 02:44 PM
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The thing you need for doing shallow blind holes is called a bottoming tap, FYI.

You get the threads started as best you can with a regular tap. Run it till it bottoms out. Then switch to the bottoming tap. It's basically just the full Diameter part of a tap, so the threads need to be started for it to work, but it will cut full dimension threads right to the bottom of the hole.

I always collect people's broken taps around the shop to make my own bottoming taps. Very handy.
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  #58  
Old 08-19-2018, 10:36 AM
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Chain tensioner

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---------- Post added at 10:35 AM ---------- Previous post was at 10:23 AM ----------

https://youtu.be/U-Cn-9Y7wpU

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  #59  
Old 08-20-2018, 07:42 AM
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Dang that's purdy.
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  #60  
Old 08-20-2018, 11:18 AM
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Poncin, a obscure French company designed & built 66 and 8x8 ATV's in the 80's.
My aim is to build and open frame 2 seater ATV similar to the V2000s as shown in the attached picture.


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