Got me an ofna buggy
 

I want to know what is involved with a conversion. I have read a couple articles on them. It is not in bad shape but could be better. I will take suggestion. I would like to go brushless. I don't care for nitro. I will have to ebay some nitro items now. MO money for project. :D Can someone tell me to what type this is? I will look to try and find. I don't know alot about a buggy yet. Willing to learn though.

Looks like the MBX - good news :) It uses the diff that accepts plastic spurs with no modification.
First, get the nylon/plastic spur that Mike sells here (51T). Then get a couple small pinions to work with.
Next, it's time to start hacking away all the stuff that's in the way of electronics. Maybe figure out a way to get the steering servo out of the way, too.
I have a buggy just like it that will be a winter project for me. I'll have about 6 months+ to get it ready for next year, so I'm in no rush to start.
My current plan is to run 4s2p lipo with an MGM 12012 and Feigao 8L. I may end up with a different motor, but we'll see. I'm building it to compete with nitro next season. One thing I plan on doing is putting my center diff on it's side (similar to the way I did my MGT) and raising it a little to use the OFNA 65T nylon spur. Lastly, I'd like to end up using Gorilla Maxx battery straps to hold down the lipo packs, so they'll most likely end up over the rock guards on both sides.
Considering I'm not working on mine for about a month or so, I'll expect you to get ahead of me ;)
We can learn off of each other on this project.

Best of luck, of course - and I'll go check mine out again to start getting some more ideas for you.

:)

Thanks alot there batfish. You mention a 65 t spur. What is the deal with that? I think you may help me more than I help you. I will help you if I can. Got a better deal than thougt. 250 and two tires I had sitting around. Got the mgt to with it.

Make sure you clean her up a little ;-)

I notice that to. How do you tell between the 9.5 and regular mbx? It is a little dirty. Have to take the stuff off any way. I can clean it up then.

Batfish - the 8L is not the motor for a 1/8 buggy. If you really want to run one, use 3s Lipo, and not 4s (I have found my 8L to heat up too much on 4s Lipo, but felt good on 3s).

coolhandcountry - Have you seen my buggy? (It's under the electric section). Right now I am basically re-converting it (for the third time!). I have a custom chassis made, that will be VERY strong, and I am making a VERY strong motor mount. I am not using a center diff, but a custom slipper based off the Revo slipper. So, that means that I am working with a completely custom design. Whatever you do, make sure that it suits you.

That buggy isn't a 9.5 MBX, since the 9.5 MBX comes with orange anodized parts. Also, the front chassis brace orientation is different.
It's not the Ultra MBX, because the Ultra MBX has a different upper deck design. It's not the Ultra MBX Pro for the same reason.
It's not the Ultra MBX R2 because the upper deck is different.
It's not the Ultra LX Pro for the same reason.
That leaves it to be ONLY the Ultra LX Comp. This buggy is compatible with the plastic differential gear.

In case you are wondering how I figured this out, I went to Ofna's website and went through the PDF files of exploded views of all of the buggies I knew of that could possibly look like the picture you posted.

Right on! I would use a 7xl, cheap, torquey, and versatile. The ability to run 12-18 cells and 4s-5s lipo will be great and you can make it a truggy. You can use a hacked E-Maxx motor plate to mount on the brake system or machine your own plate. Cold Fusion also has a universal motor mount plate for 1/8 conversions.

I have a 14 L and when i get my lehner I will have a 9xl. It will take the high gearing from the center diff better. Thanks alot there metal man for your research. I don't have lipos. I was thinking of 14 cells. I have to keep you posted as project comes along. OH! Yes i have seen your clean buggy. It made me want to do one. YOu and dabid are to blame for this. JK :) Thank everyone.

The 8L is not the ideal motor, no - but it's the one I already have, and it powered my Hyper 7 conversion and the MGT for a while. It definitely works, but doesn't fit into the conventional wisdom of the right motor for the right job. I figure 4s may be too much for it, and I do also have 3s to work with, and I know neither may be good with the 8L as a permanent solution for the buggy, which is why I said I may end up with a different motor.
I try to use what I have first and post relevant information for others to use and learn from. :)

It's definitely in the "Ultra" series, and it does look like a cross between the LX and MBX.
I have an Ultra MBX Pro and the only differences I can see in coolhandcountry's picture is that his has a lay-down steering servo and the pillow ball suspension. The lay-down servo is standard on the LX while PBS is standard on a couple of the MBX models (not mine).
Either way, most parts will be swappable :)

Im intersted in the nitro stuff. YGPM

Re: Got me an ofna buggy
 

Dude, that pic is bugging me, don't know what chassis that is. It looks close to a Ultra LX Pro though, maybe some other Ultra version? The laydown steering servo is what gets me........:W:

Is the older version different. I am not sure how old it is. It may be an orginal. I have took the motor off now. Would another pic or differnet angle help? Is a mb nitro motor supposed to be good? That is what came off it.

The motor has a s7 on the side.

You mean RB? The RB S7 is a great nitro motor. Among my favorites.

Did you see my post David? I did all that research lol! If it is not an Ultra LX Comp, then it is some older buggy that Ofna has no manual for on their website.

I know what it will be when done. Ofna buggy coolhand style. Nothing but brushless.
Yeah that is what i meant mike was a rb s7.

its not the ultra lx pro...look at the front a-arms. people, people, people is it that hard to figure out? lol....its the ultra mbx comp. look at its here http://ofna.com/ultrambxcomp.html . look at the suspension and the shocks, as well as the servo and chassis plates.

I believe we have a winner. Thanks squee and every one else. Know I know what I got. He helps if I break something.

I have question. I was checking out my buggy. I notice the diff turned freely. I took it apart and no oil. What weight oil works good for the buggy? I don't think any of the diffs have oil in.

it would depend on what you are gonna do with it..... i would say a lighter oil in the front and a fairly heavy oil in the rear for good acceleration and then something like a medium in the center diff? just a guess though....still dont know much about the buggies...

Me either squee. Have to learn some how. I do know that the little bit of greas that was in the center could explain the balding front tires. Thanks for the input.

Everyone is a little different when it comes to diff lube.
I was happy with my Hyper 7 TQ conversion when I ran 1,000 in the front, 3,000 in the center, and 7,000 in the rear.
Your mileage may vary.

:)

light weight in the front for better turn-in right? and the heavy in the rear for acceleration?

I have some 5000 weight oil. I may put that all the way around and see. don't know until i try. If I don't like it I get me some others and keep on trying. I will try your setup to batfish if don't like it. I think some oil may do better than none. I have to work some of the bugs out of the buggy. It don't seem right some where. I notice a few things bent in front. Have to check it out real good. Will it be possible to see a good 60mph pass out of this ride. Thanks

5000 will probably be fine in the center and rear, but your steering may suffer a little with that lube in the front. If you haven't driven 8th scale before you may not even notice a difference, though. Like you said, use what you have and work from there :)
With enough voltage and high enough gearing, I'm sure you can get to 60mph. You had better make sure you ease into the throttle, though. Once you're geared for that speed any sudden throttle movements are likely to push your setup too far, which could be a very bad thing for the wallet ;)
If you plan on racing the buggy regularly, check the speeds of the buggies at the track and just try to match their speeds. They're already running as fast as the track will allow so there's no need to make yours 10mph faster. If you're just going to bash with it, gear for your maximum fun in the area you run it :)

I have 38 acre field to run in. So I can open it up. I may leave the front alone and drive it first to see what is what. Put the 5000 in the center and rear. I want this to be my speed buggy. It is low and should drive and handle a little better than my maxx. I was thinking of a 7xl with 14-16 cells. I not sure yet. I get my lehner ordered up I put the 9xl on it. I figure it out as I go. It has a hi torque servo on it to. So that will help with steering as well.

Alot of the buggy guys run 3.000 fr, 5.000 or 7.000 middle, and 2.000 or 1.000 in rr. You will have to play around with it to find out what you like.

Thanks hippie. That is a little thicker than batfishes. Everyone has different preference.
This is one of the dirtiest projects I have ever worked on. You all thought it was dirt in pic. I think it is worse than I thought.
thanks for the info every body. I will keep you up to date.

Ideal diff oil selection will vary greatly with track conditions. On a loose or rough track, thinner oil is typically better (I like 5K in the front and center and 1K in the rear). A high traction, smooth running surface will call for thicker oil (on smotth surfaces, I would probably run 20K in the center, 10K in the front and 5K in the rear). Rough tracks require more diff action, so lighter oil is in order. A smooth track requires maximum traction(less wory about spinning out), so heavy oil is in order.

forget about all thoses weight oils.. I just use Vegetable oil.. haha j/k

but I like the 3000 front, and 7000 rear...

Here is an updated pic. It is coming along slowly but surely.

looking good but what is all the excess aluminum for?

That is for when my esc goes on it. I have to mount receiver to with a bec.I may see what I can mount down low. It is going to have plenty of batteries down there. :D

what motor is that?

It is a nemisis 14 L. I want to get a xl to go on it. I had the motor laying around. Should do good with 16 cells on it.

coolhandcountry,

That upper deck idea is pretty cool. :)
I may have to try something like that on mine this winter.

Be careful with that motor mount! It may bend easily, like the 1/8" thick aluminum motor plate I originally had on my buggy (a long time ago).

yeah.. My 1/8" use to bend and flex too when I land... but ever since I used the 1/4" angle piece.. smooth as silk...

I going to bend a L and run it the back. It will have two motor mouns on it when done. Thanks though. As it get closer to finishing I have to post the last pic and get a video of it.

I got my new body painted up. I still need to finish the rest.

There it is!!!!

That was what you are working on right?!

:)