DTSFab.com (Desert, Trail and Sand)

UTV's Off Road ( RZR, YXZ, Mini Buggy, Carts,etc.) => UTV Member Project Logs => Topic started by: Surly on April 03, 2009, 09:38:51 AM

Title: MZ 243 vortex
Post by: Surly on April 03, 2009, 09:38:51 AM: Hi i am Richard from the Netherlands.
A while ago i started my buggy project.
The buggy is based on a book from Haynes "build your own off-road buggy"
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3161%2F3354679164_72ca779948.jpg&hash=1a8c1b7ad26e5a08b22ef109c665d901a7da32db)
I have made my own drawings in Google sketch up.
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1085%2F737210485_2f2f420e44.jpg&hash=e1eb594c1ea6105610b34b886ea3189f60b26509)

specs off the buggy:
250cc 2 stroke engine 20hp
rear differential with FNR
front suspension
no rear suspension at the moment
Title: Re: MZ 243 vortex
Post by: Engineer on April 03, 2009, 10:39:56 AM: It looks like you have a plan!

What kind of differential is it that has a FNR?

Do you have any wheels and tires in mind?

What kind of terrain do you plan to ride on?
Title: Re: MZ 243 vortex
Post by: Surly on April 03, 2009, 11:35:00 AM: Here are a few pictures
The start
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1319%2F806602508_89904ce718.jpg&hash=2432ce2e05e1ec5fcca938a2dffd147b2a28ed27)
The motor
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1386%2F1185320325_3489f7643a.jpg&hash=c55e2332ad31b710031db57c8dc6fe4f3491e246)
The frame
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm3.static.flickr.com%2F2393%2F2098175715_78fed5d9e9.jpg&hash=df59d28f250d6d7650bdec1a94db0b1fdc84817c)
Motor setup
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm3.static.flickr.com%2F2126%2F2183991182_52ae50783d.jpg&hash=c79dec8024f3057a076a9fe1b4e36229a44b03ad)
Differential with fnr from a microcar
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm3.static.flickr.com%2F2075%2F2183993262_13318becbf.jpg&hash=73e1765efb8892e57ad74fe0f502ddcd74269453)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3051%2F2827612804_c76fc535f2.jpg&hash=5faf5ca921bc15d639bb9b4697edd9c0353dd98d)
Homemade exhaust
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3254%2F2733394634_0fa5d2c103.jpg&hash=0d90b7be776b9cd825f7b97314f26d6d95859ce7)
Title: Re: MZ 243 vortex
Post by: Surly on April 03, 2009, 11:53:09 AM: And more
Tig welding the frame
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3135%2F3075525970_3383039613.jpg&hash=312e8f1cc5b4cbfa701ef3c03a43457c1426040d)
Steering linkage
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm2.static.flickr.com%2F1168%2F3269616027_44b99f9c30.jpg&hash=067ad6b6ce40edd8d0cfcdc70bee608dc1927a4a)
Front suspension
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3377%2F3329324658_aa98cc5978.jpg&hash=8bb65a3604f86d8bfac16447698fb6899573a8e9)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3630%2F3356884925_5338c1505f.jpg&hash=bb053cf3e375a353f22b369cb94d6a51fbe4035e)
The buggy as it is today
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3553%2F3392549455_2a7120d78d.jpg&hash=6ce11877435b80e552008e0c7b20a71f555047c5)
Title: Re: MZ 243 vortex
Post by: SPEC on April 03, 2009, 06:29:10 PM: Welcome Surley,
Where do I know you from?
I like the build, but I think your going to have some issues, with the diff and fnr box..That one is bushed isn't it?
I think I had one of those in the past on a racing lawnmower...at 45 mph it melted down and locked up...
I like the pix, But I would suggest some more bracing on the main hoop...the way you have it now, it will pull the hoop down onto the driver in a front collision, or a stout flip, Personally I'd like to see at least a down bar from the top of the hoop the the front sub...This will also help to keep bad things from getting to the driver...Brush, limbs...Parked cars... etc
Title: Re: MZ 243 vortex
Post by: Surly on April 07, 2009, 11:17:30 AM: Quote from: Engineer on April 03, 2009, 10:39:56 AM

What kind of differential is it that has a FNR?
It is a differentiaal from a microcar

Quote
Do you have any wheels and tires in mind?
Quad tires

Quote
What kind of terrain do you plan to ride on?
I 'am gone use it on a track
In october there is a event in our village called "Stoute cross" (naughty cross)
http://www.stoutecross.nl/ (http://www.stoutecross.nl/)
Hopefully it is ready then
Title: Re: MZ 243 vortex
Post by: Surly on April 07, 2009, 11:29:06 AM: Quote from: Spec on April 03, 2009, 06:29:10 PM

I like the build, but I think your going to have some issues, with the diff and fnr box..That one is bushed isn't it?
This differential has ballbearings inside.Hopefully it can handle the power.

Quote
I would suggest some more bracing on the main hoop
Mayby later on i will change the cage design.For now my goal isto get it ready for october
Title: Re: MZ 243 vortex
Post by: fabr on April 07, 2009, 01:33:28 PM: Welcome to the site.looks like a nice project.
Title: Re: MZ 243 vortex
Post by: Engineer on April 07, 2009, 01:48:54 PM: I see that you have the motor mounted "backwards" to the normal way that it was in the motorcycle. The FNR box that you have may be able to reverse the direction, but sometimes the Reverse direction is not as robust as the forward direction.

Looks like your making good progress.

If you turn the motor around it might be easier to kickstart as well. ;D
Title: Re: MZ 243 vortex
Post by: Surly on April 07, 2009, 02:08:02 PM: Quote from: Engineer on April 07, 2009, 01:48:54 PM
I see that you have the motor mounted "backwards" to the normal way that it was in the motorcycle.
The reason that i rotated the engine is:when i wan't to make rear suspension later on the pivot point also holds the sprockets.
The other option was to put the engine on the left side but i din't like that.My engine has the sprockets on the right side.
Title: Re: MZ 243 vortex
Post by: Surly on April 14, 2009, 01:49:32 PM: The kickstarter
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3564%2F3442692378_7c9f2338cb.jpg&hash=114d9b52403786f450d8ed94196da0523faccad1)

The transmission design
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3607%2F3441876695_27afbdbcf6.jpg&hash=42b0eb8732f226f0c815e457f5616a101200c4b0)
Title: Re: MZ 243 vortex
Post by: JimmieD on April 15, 2009, 08:37:20 PM: Very nice work, Surly, and a fun looking ride!

May I make one suggestion? Maybe consider adding a universal joint & bearing mount somewhere to that steering shaft, near 1/2 its length or so, meaning in the center or there abouts. That way in an impact it will fold over instead of skewering you like a roast on the barbecue!

Enjoy yourself, and it looks like you have a great start at it!

.
Title: Re: MZ 243 vortex
Post by: Surly on April 23, 2009, 02:36:09 PM: little update
fabrication of the transmission
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3605%2F3469366254_f2bb368d5e.jpg&hash=fbae1cd404c4515e154d42042972b76a147a446b)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3520%2F3469365876_8095e89dd5.jpg&hash=8a0df877525c1e25154e65c78a3c7ca99316a9a0)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3477%2F3468552545_f3d2d2f0f5.jpg&hash=de1180ecd9c278822a67ac2e39ad0b1465388d7d)
Title: Re: MZ 243 vortex
Post by: Surly on May 10, 2009, 11:55:10 AM: More picture of my driveline
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3322%2F3519361004_c10dc9e360.jpg&hash=3d50e3c5914bec2a54ff9b7fd91097f44a1d7456)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3302%2F3518550789_0e335276c2.jpg&hash=8c892e6fd9e1ac8cb674b8db78cb0e29b7dc3686)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3657%2F3519361952_34f9d6e35e.jpg&hash=7ed7a8732adb32b43fd4f9deb28acb31326b3d86)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3382%2F3518560713_72bd8c4208.jpg&hash=62ccfd0fb11726f2d619f6ce486de9a8be16364f)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3657%2F3519371100_5ba48e53b6.jpg&hash=653da077050a4ad494759de515187614121728d9)
Title: Re: MZ 243 vortex
Post by: Surly on May 17, 2009, 06:12:54 AM: chainwheel carrier
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm3.static.flickr.com%2F2025%2F3538010547_3ed3524841.jpg&hash=fc9f5a02bb865a9e7bb106fc0c4856794203b8f4)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3330%2F3538823014_2fe8de2eea.jpg&hash=966684d6379f176d4f1797643ed96ced030c38f8)
Title: Re: MZ 243 vortex
Post by: Surly on May 23, 2009, 02:20:14 PM: More pics

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3396%2F3557670412_4ba4c44628.jpg&hash=c8791614c2883f6135a3ba9d2452284b3e05847a)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3368%2F3557670038_0a364c5f4d.jpg&hash=79e64ac5a45d1b0382a750bfd8ce1c3172e6f99e)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3660%2F3557670780_7ce733d022.jpg&hash=3209e63c36405ec376b5a454e168df8508d8e670)
Title: Re: MZ 243 vortex
Post by: fabr on May 27, 2009, 06:53:42 AM: Is this your design or from plans?
Title: Re: MZ 243 vortex
Post by: Engineer on May 27, 2009, 10:55:40 AM: looks like it is almost time for the test drive. ;D
Title: Re: MZ 243 vortex
Post by: Surly on May 27, 2009, 11:20:21 AM: Quote from: Masterfabr on May 27, 2009, 06:53:42 AM
Is this your design or from plans?
The buggy is based on a book from Haynes "build your own off-road buggy"
I changed the buggy on several points:
-front suspension
-rear differential
-and a few small things
Title: Re: MZ 243 vortex
Post by: Surly on May 27, 2009, 11:23:27 AM: Quote from: Engineer on May 27, 2009, 10:55:40 AM
looks like it is almost time for the test drive. ;D
Almost
I have to do some final welding on the frame to fit the rear axle
and connect the pedals to the engine.
Title: Re: MZ 243 vortex
Post by: Surly on May 27, 2009, 11:32:46 AM: The book
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3161%2F3354679164_72ca779948.jpg&hash=1a8c1b7ad26e5a08b22ef109c665d901a7da32db)

The original frame from the book
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3415%2F3570902576_f421bbb546.jpg&hash=ceb978ed172f8c1ba573b920b060928fe16c3793)

My frame with front suspension
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3630%2F3356884925_5338c1505f.jpg&hash=bb053cf3e375a353f22b369cb94d6a51fbe4035e)
Title: Re: MZ 243 vortex
Post by: fabr on May 27, 2009, 01:43:04 PM: Ah,yes,I remember now. I might suggest you reinforce the top of the shock mounts with some triangulation.I'm afraid they will be an issue if not done.
Title: Re: MZ 243 vortex
Post by: Surly on May 30, 2009, 12:46:58 PM: Quote from: Masterfabr on May 27, 2009, 01:43:04 PM
Ah,yes,I remember now. I might suggest you reinforce the top of the shock mounts with some triangulation.I'm afraid they will be an issue if not done.
What is the issue.
That the shock mounts wil bend the square tube under load.
I' am thinking of putting a bar between the two shock mounts to stiffen it up.
Please explane.
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3645%2F3578542889_0890136f39.jpg&hash=719372e291f64d2014013f1079364ba6db9daab8)
Title: Re: MZ 243 vortex
Post by: fabr on May 30, 2009, 03:15:03 PM: I'd 45 that line down to the area near the steering column instead.Do it for both sides.I somehow lost your pics please reprint id you don't understand.
Title: Re: MZ 243 vortex
Post by: Surly on June 03, 2009, 07:57:24 AM: Quote from: Surly on May 30, 2009, 12:46:58 PM
What is the issue.
That the shock mounts wil bend the square tube under load.
I' am thinking of putting a bar between the two shock mounts to stiffen it up.
Please explane.
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3645%2F3578542889_0890136f39.jpg&hash=719372e291f64d2014013f1079364ba6db9daab8)
I wil also make brackets on both sides to give it more strengt

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3616%2F3592473122_e9594e75d5.jpg&hash=923a4ee8b67160c19d31305574bd6f771e33baca)
Title: Re: MZ 243 vortex
Post by: Surly on June 16, 2009, 10:47:58 AM: Firsttime in the wild

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3547%2F3632265777_ebc57651f6.jpg&hash=fc1605f5db4ccb2d7778a848d030b9472d35f0c7)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3015%2F3632265289_dcc5686522.jpg&hash=d6e65c145260e2dd9488258172751bfa747c5b21)
Title: Re: MZ 243 vortex
Post by: fabr on June 16, 2009, 10:56:34 AM: I admit I'm being a bit of a smart ass with this comment and I hope you take it in the kidding way I mean it but don't you think those front shocks might be a bit stiff? Sorry , I just could not pass up the opportunity. ;D ;D
Title: Re: MZ 243 vortex
Post by: Surly on June 19, 2009, 02:54:51 PM: Quote from: Masterfabr on June 16, 2009, 10:56:34 AM
I admit I'm being a bit of a smart ass with this comment and I hope you take it in the kidding way I mean it but don't you think those front shocks might be a bit stiff? Sorry , I just could not pass up the opportunity. ;D ;D

TATAA

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3635%2F3642355118_a47705c38e_b.jpg&hash=75ba330620bb085382da68e7132c543c7466243a)

(https://dtsfab.com/proxy.php?request=http%3A%2F%2Ffarm4.static.flickr.com%2F3353%2F3642354752_c95f36694d_b.jpg&hash=f861ffeeb5720cd850ab4de7241dce6b289e11b7)
Title: Re: MZ 243 vortex
Post by: fabr on June 19, 2009, 02:57:12 PM: Ah! Ha!!!!!
Title: Re: MZ 243 vortex
Post by: SPEC on June 19, 2009, 03:12:09 PM: WHEEEE
Looks like it's close to go time