Dans Buggy build

[Kiel]

Thats purty Dan. Whats the specs on the atlas? What was in that box you got a while back?

 

[notajeep]

Thats purty Dan. Whats the specs on the atlas? What was in that box you got a while back?

The box you saw was the adaper for my sm465 to a dana 300. (Atlas)
The specs on the atlas are 4.3 ratio, pass side drop, HD 32 spline outputs and 1410 yokes front and rear. It should mount in the chassis so that the front and rear driveshafts will be with in about 2" of each other and thus interchangeable.

 

[notajeep]

This showed up for me today.
It is 19"x22"x3" Dual pass from summit.
It will mount in the rear of the buggy above the fuel cell.

 

[Meat_]

This showed up for me today.
It is 19"x22"x3" Dual pass from summit.

It will mount in the rear of the buggy above the fuel cell.

ick

 

[notajeep]

ick

What do you mean ick? You don't like rear mounter radiators? I have some room in the firewall area.... but I thought that was counter productive....

 

[Meat_]

I hate the whole idea of a rear radiator.

 

[notajeep]

Why?

 

[Meat_]

Scalding hot fluid behind me, hot tubes running around, poor air flow.... any one of those reasons is enough for me.

 

[notajeep]

Hot fluid I guess could be a good argument..... But are any of us really going fast enough for airflow to be an issue?

 

[Meat_]

You will, if I ever get around to building a buggy it'll do it's fair share of baja. Ask the moonbuggy guys.

 

[RockMonkey]

Hot fluid I guess could be a good argument..... But are any of us really going fast enough for airflow to be an issue?

Yes. Radiators in the rear really tend to limit how fast you can go driving to/from trails and on fast smooth (read: fun) sections of trail. My buggy worked fine at high speeds for short distances, but even fairly low speeds (35-40ish) would make it hot after a few minutes. Radiators really work better in the front if you can fit them there.

Hot fluid behind me, and running around everywhere was never a problem for me, but the poor airflow is a real issue on a recreational buggy.

 

[notajeep]

Yes. Radiators in the rear really tend to limit how fast you can go driving to/from trails and on fast smooth (read: fun) sections of trail. My buggy worked fine at high speeds for short distances, but even fairly low speeds (35-40ish) would make it hot after a few minutes. Radiators really work better in the front if you can fit them there.

Hot fluid behind me, and running around everywhere was never a problem for me, but the poor airflow is a real issue on a recreational buggy.

Interesting....

 

[Herzog]

Honestly, I never have a problem at high speeds w/ my rear mounted radiator. I love it.

 

[erocrocks]

are you going to have a fan on it, then what the difference to having it on the front at low speed, you rpms are up , more flow of fluid, plus haveingt the extra surface area of the piping would al add up to better cooling.... i would think

 

[notajeep]

are you going to have a fan on it, then what the difference to having it on the front at low speed, you rpms are up , more flow of fluid, plus haveingt the extra surface area of the piping would al add up to better cooling.... i would think

That is kinda what I was thinking.... I will be running an electric fan.

 

[RockMonkey]

are you going to have a fan on it, then what the difference to having it on the front at low speed, you rpms are up , more flow of fluid, plus haveingt the extra surface area of the piping would al add up to better cooling.... i would think

The difference is that at higher speeds air flows over the buggy and creates a bit of a vacuum directly behind any solid parts. So if you put your radiator close behind your seats, fuel cell, or whatever, there may not be enough air moving through it. It's obviously not a perfect vacuum, but it sucks enough air out of the area that what's left is not enough to cool the radiator, even with an electric fan. No matter what kind of fan you run, it won't work if there's no air for it to pull. With the radiator in the front the air is running right into it, so no matter what speed you are going it always has plenty of air to cool the radiator. Some spots on the rear of some buggies will have plenty of air flow. I don't now that you could really tell where it will work without a wind tunnel. Overall it's a lot easier to just put it in the front.

 

[notajeep]

Good news: Cutting brakes came in today.
Bad News: Atlas will not be here till late next week. :-\

 

[Bart]

My last two buggies had the radiator in the rear and both overheated on a trail. I ended up moving the one to the front and it cured the problem. The last one had to remain where it was and never was much fun to run any trail.

Another point, if you do put it in the rear mark the tubes carrying the fluid. I was at the rock cross when Team Fred rolled his. I grabbed the first bar I came to to help flip him back over and sure enough, got a second degree burn on my hand.

 

[notajeep]

Another point, if you do put it in the rear mark the tubes carrying the fluid. I was at the rock cross when Team Fred rolled his. I grabbed the first bar I came to to help flip him back over and sure enough, got a second degree burn on my hand.

You make a good point there Bart. Were you running fans on either of your buggys?

 

[waynehartwig]

Another point, if you do put it in the rear mark the tubes carrying the fluid. I was at the rock cross when Team Fred rolled his. I grabbed the first bar I came to to help flip him back over and sure enough, got a second degree burn on my hand.

OUCH!