My brother went to a pull last week and they pulled a stock diesel 2wd class then the normal 4wd class.

I have never heard of this before, how many others have seen 2wd stock classes?

also I was curious if a diesel can pull in a 2wd modified class, I didnt see any specific rule saying it has to be a gas engine. Is it just implied that diesel is only for its own class?

 

Give it time it is coming. I haven't seen any 2wd pulls yet but its only a matter of time. I know of a boy that it wanting to build a 2wd and it should be cheaper to do it. Most people will think I'm crazy when I say this but a 2wd pulling truck will outpull a 4wd everytime.

 

they were still 8000 pounds too, thats a lot of weight to play with for a 2wd.

 

Yeah pulling a 2wd is pretty simple too. You throw all the weight you can on the very back you just have enough on the front to keep the front tires on the ground so you can steer.

 

Uh... when the sled hooks to you, the last thing you need to think about is getting plenty of weight on the rear wheels.

 

I guess with some 50" tractor tires or something, and lots of wheel speed it will work...but I've watched a pretty hot running/high rpm 12v not be able to move the sled more than 15' with 3wd because a rear axle shaft was broke...

 

There is alot more to 2wd pulling than you think. It's not even close to simple.

 

so why do the tractors (that are 2 wheel drive) have weights stacked on the rear?? they must not know what they are doing?

 

I watched a 2wd diesel class earlier this month and several of the trucks didn't even move the sled, I don't recall anybody getting past 150' or so. It's going to take a really high hitch height and the right tires to make a decent puller in that class. The other problem is that the weight distribution of a diesel truck is pretty good for 4wd but totally wrong for a 2wd class. The modified 2wd trucks are balanced so once they get the sled moving the front tires barely touch the ground and there aren't very many "street" trucks who's frames are going to handle that for very long.

 

I always thought 4wd pulling was easier.. you just put it all on the front... 2wd classes you have to get a balance.. enough weight on the back to get traction.. but still have enough on the front to keep the front end down.. or just up at the end with the full transfer of weight to the back tires... Every track, and most sleds will be different.. you have to guess... or learn, by watching others.. and others pulling in the class
4wd.. put it all on the front.. it because all the tires are pulling... the weights hold the front down.. the sled holds the back down...
Bryan

 

Thats what someone needs to do, get some tires, balance the weights and beef up the weak spots. Then you would spank the competition and the next year surely there will be someone else with some thought in their truck.


If a gasser can pull in 2wd then a diesel can do it better. What is the hp/tq of those 2wd modi trucks anyways?

 

Congratulations for the comment of the year.

 

exactly if you have a 2wd set up right and not a street truck it will out pull a 4wd.

 

how do you figure that?

 

I was being sarcastic.

But it really all depends on how the truck is set-up.