View Full Version : Solid rear axle

10-17-2014, 04:27 PM
Hello, I have been reading on here for months but never posted anything. I am building a shredder 2 for my kids (12 and 14 yrs old). I am pretty much finished with the frame except for the rear end. I am curious if anyone has put a solid rear axle in one of these. This is my first build. I have a lot of welding experience but no buggy experience. The way they have the rear end set up seems complicated. Another question I have is about the engine. I originally was going with a different set of drawings and bought a harbor freight 13 hp engine. As heavy as this buggy is getting, I have serious doubts about this being enough power. Any suggestions? I don't want my kids having tons of power available to wreck this thing but I don't want it to be boring either. I could post pics but it pretty much looks like everyone else's.

Thank you

10-17-2014, 04:42 PM
hello and welcome to MBN

We have used the 13hp clone motor in our MXT buggies with a solid axle
pretty good power and will kick around adults in these buggies at 50 plus mph
we are not jumping ours,,,,very often anyhow.
only running 5-6" of travel

Motor is mounted on articulating swing arm
anyhow, here is a link that shows our MXT buggies and rear set up .

MXT Build (http://www.minibuggy.net/forum/mxt-kids-buggies/19594-protodie-single-seat-mxt-kart.html)

10-17-2014, 04:44 PM
Thank you I will check it out. Do you know how much it weighs without riders? And do you use a torque converter with the 13 hp motor?

10-17-2014, 10:05 PM
You're thinking of using a swingarm setup rather than the independent arms? It can be done, but you probably need to mount the engine higher than shown in the plans. The swingarm axle might hit against the frame supporting the engine. Prototype it out with a solid axle and see what you think.

I had a two-seater go kart similar to the Shredder with a 10 horsepower engine. The 13 hp engine will be a good starting point for 12-to-14 year olds. Enough power to have fun but not enough that they get themselves into serious trouble.

The Harbor Freight engines are a Honda clone and there are plenty of options to wring a little more horsepower out of them. I always recommend the Affordable Go Karts website. Plenty of tips and addons to keep you busy for years to come.

You'll want to use a torque converter on your buggy. The go kart clutches are cheaper but there's no performance to be found in them. Torque converters work much better.

10-22-2014, 03:01 PM
Think I will just build it like the plans show.

10-25-2014, 03:00 PM
http://i1372.photobucket.com/albums/ag354/brianskelton77/Mobile%20Uploads/449CF2DF-02DE-4365-A036-C88E86A50E6C_zpsg3aiidbr.jpg (http://s1372.photobucket.com/user/brianskelton77/media/Mobile%20Uploads/449CF2DF-02DE-4365-A036-C88E86A50E6C_zpsg3aiidbr.jpg.html)

Trying a pic

10-25-2014, 03:16 PM
I am TIG welding the whole thing so it's a slow go. Really hoping to be finished by Christmas for the kids. Now thinking about cv axles in the rear.

10-26-2014, 02:08 AM
wow thats quick work, looking great! Looks just like the plans too!

10-26-2014, 02:14 AM
Yeah, looks good.

Anyone know the reason for the little jog in the floor?

10-26-2014, 02:14 AM
Actually I've been working on it for about 6 months off and on lol. Jog in floor?

10-26-2014, 12:12 PM
The jog in the floor he means the overlapped pieces. I have never understood why the plans call for that. I'd rather keep those pieces flush and miter the ends together. Either way it looks like it works well.
Did you make the frame any wider or longer? Most guys who have built the shredder all say they wish it was a bit larger.

10-26-2014, 01:36 PM
Yeah, the step in the floor tubing?

10-26-2014, 02:07 PM
No it's for my kids so I didn't see the need. Maybe I'll regret it I don't know?

10-29-2014, 11:05 AM
Nah, the kids will be fine in it. I fit in mine with another adult, it's just a tight squeeze. Looks like your making good progress.