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Old 04-23-2019, 12:32 PM
5814SpeedCo 5814SpeedCo is offline
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Default Mini buggy concept

Well I will be in my new house this weekend and once I'm settled in it will be time to start building. Decided not to use a Dingo kart and going to build my own frame. This is just a concept, no final decisions yet. All done in AutoCAD.

Thinking of having a dual purpose suspension setup as well. Would be nice to have the option to run it off-road and then also swap wheels and shocks to lower it closer to the ground and rip around on a road track....decisions decisions!
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Old 04-23-2019, 08:17 PM
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if you fabricate the chassis yourself,
just add two upper mounting spots for the coilovers (assuming you intend to use coilovers)
one further in and/or higher up lowers the vehicle without changing shocks

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Old 04-24-2019, 06:18 AM
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Looks like you are designing it with a motorcycle or other power sports engine in mind?
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Old 04-24-2019, 11:42 AM
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Quote:
Originally Posted by itsid View Post
if you fabricate the chassis yourself,
just add two upper mounting spots for the coilovers (assuming you intend to use coilovers)
one further in and/or higher up lowers the vehicle without changing shocks

'sid
Coilovers indeed! Changing out shocks wouldn't take long. Them I could have a set of long travel for off-road and then a set tuned for track racing. But I like the idea of multiple mounting spots.

---------- Post added at 12:42 PM ---------- Previous post was at 12:41 PM ----------

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Looks like you are designing it with a motorcycle or other power sports engine in mind?
Yes I have a 1980 xs850 triple engine I plan on using. Going to have to modify it from a shaft drive to a chain drive. Won't be to hard and is fairly cheap to do.
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Old 04-24-2019, 11:52 AM
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Mounting the engine I guess longitudinally vs the transverse way with the shaft cut off? I've only seen one engine converted from shaft to chain and it was from an 1980s Honda 4 wheeler. The guy cut the shaft off, welded a u-joint cap to a sprocket and drilled/tapped the engine stub for a bolt to hold the sprocket on. The engine had to be mounted in a sense longitudinally...or sideways compared to the original way.
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Old 04-24-2019, 12:27 PM
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You take the middle drive housing and cut it open, remove the gear on the output shaft and replace it with a sprocket from a CB77. Also replace the bearing with a sealed bearing. Bolt it back on and BAM....you have a chain drive engine! Also can make a support on the end of the output shaft to help stabilize it better. Some people do this by using part of the cut off housing and fabricate a middle piece that also acts as a chain sprocket cover
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Old 04-24-2019, 01:56 PM
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Sounds straight forward and not very complicated.
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Old 04-24-2019, 02:57 PM
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Just a thought ive always had, keep it shaft drive and mate it to a differential (preferably spool, welded or ls). Toyota pickup front diffs and s10 diffs are common as they have flanged outputs. Ive always thought about a subaru rear diff as well, more compact, foresters had a viscous lsd 4.11:1
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Old 04-24-2019, 03:05 PM
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Quote:
Originally Posted by Kaptain Krunch View Post
Just a thought ive always had, keep it shaft drive and mate it to a differential (preferably spool, welded or ls). Toyota pickup front diffs and s10 diffs are common as they have flanged outputs. Ive always thought about a subaru rear diff as well, more compact, foresters had a viscous lsd 4.11:1
I bet an ATV or side by side diff could work too. But using one from a compact truck would be a lot of added weight.
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Old 04-24-2019, 04:36 PM
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Quote:
Originally Posted by Kartorbust View Post
I bet an ATV or side by side diff could work too. But using one from a compact truck would be a lot of added weight.
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Old 04-25-2019, 07:00 AM
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I'm looking at a few options on drive system:

1. VW differential with CV axles for independent rear suspension

2. ATV swingarm with a single rear shock

3. Solid beefed up live axle

I would love to independent rear suspension but it can get pricey, the ATV swingarm is very doable since I have a friend that has done it and works very well.
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Old 04-25-2019, 09:03 AM
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Just today someone posted his Baja Blaster kart...
and it too has individual rear suspension!

A nice setup btw:
essentially a jackshaft with brake rotor and sprocket left and right
and U joints on either end to run the shafts to the wheels...
no diff, very low part count (and thus price)
low weight compared to about any diff, but especially a car differential

And the power limit is dictated by what ever size U-joint and shafts you got

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Old 04-25-2019, 10:19 AM
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Quote:
Originally Posted by itsid View Post
Just today someone posted his Baja Blaster kart...
and it too has individual rear suspension!

A nice setup btw:
essentially a jackshaft with brake rotor and sprocket left and right
and U joints on either end to run the shafts to the wheels...
no diff, very low part count (and thus price)
low weight compared to about any diff, but especially a car differential

And the power limit is dictated by what ever size U-joint and shafts you got

'sid

Got a link to the post?
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Old 04-25-2019, 10:22 AM
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The most recent thread in the "Introduce Yourself" subforum.

---------- Post added at 11:22 AM ---------- Previous post was at 11:22 AM ----------

http://www.diygokarts.com/vb/showthr...978#post520978
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Old 04-25-2019, 11:26 AM
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Quote:
Originally Posted by JTSpeedDemon View Post
The most recent thread in the "Introduce Yourself" subforum.

---------- Post added at 11:22 AM ---------- Previous post was at 11:22 AM ----------

http://www.diygokarts.com/vb/showthr...978#post520978
Nice try.. unfortunately not what Speedco needs I guess

here's a rear axle (centerpart) of the kart in question
AS you can see it's a fairly straight forward setup..
which can easily be copied with off the shelf parts.

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Old 04-25-2019, 11:27 AM
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Well I do have a set of CV axles for a 1977 air cooled VW bug. Bought them off of rock auto. However I may end up changing my mind to use PTO style u-joints instead, did not think that it would be a huge pain for me at least to get hubs made for a buggy spool.
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Old 04-25-2019, 11:39 AM
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That could be possible with a quad wheel hub carrier....
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Old 04-25-2019, 11:43 AM
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I'm not sure on the bolt pattern. My thought was go to a machine shop or a place that has a water jet, laser or plasma table and have hubs cut out of 1/4" thick plate steel. Have a 1" go kart live axle attached to both plates for a spool. The wheel side is where I'm getting stumped. Modifying an ATV hub might work out fine.
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Old 04-25-2019, 01:12 PM
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Quote:
Originally Posted by itsid View Post
Nice try.. unfortunately not what Speedco needs I guess

here's a rear axle (centerpart) of the kart in question
AS you can see it's a fairly straight forward setup..
which can easily be copied with off the shelf parts.

'sid
Well he asked for it! So I was just helping him find it!
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Old 04-25-2019, 06:14 PM
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indeed he did..
but since we spoke about the rear axle design,
I imagine his intention was to get a visual impression of what I tried to explain, no?

Nevermind..

'sid
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