333LikesXray XB2 2WD Buggy Thread
05-04-2019, 06:44 PM - Wikipost
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12-27-2015, 12:58 PM
#751
Make a 69T spur with built-in slipper eliminator.
12-27-2015, 01:16 PM
#752
Ran my XB2 carpet edition last night on indoor clay track. Had a tough time at first. Moved rear shocks behind shock tower and the car was great. It's a pretty high bite tacky clay surface. After switching the shocks, I felt I could add more braking and a bit more motor as well. I'm running the gear diff with 3,000 oil. 250 in front shocks, 400 in rear. Stock springs and pistons. Weight bias to the rear. 4 degree toe in rear.
A few Serpent drivers reccomended running the gear diff with only 2 spider gears and 5,000 oil. Not sure how the composite gears would hold up in this situation.
A few Serpent drivers reccomended running the gear diff with only 2 spider gears and 5,000 oil. Not sure how the composite gears would hold up in this situation.
This in turn reduces weight transfer to the front when off power and gives more rear grip coming into corners.
If you unscrew the shock rod ends to maintain the same amount of rear droop as prior to moving the shocks the difference won't be that noticeable.
You do get a few grams extra weight behind the axle, a bit slower rotation and better bump handling though.
Instead of going to 5000 in the diff I would definitely try the ball diff.
We run the ball diff 90% of the time on all types of surfaces
Bent
12-27-2015, 10:51 PM
#753
Biggest difference when moving shocks to the rear is you loose a lot of droop due to the angle of the arms (anti squat).
This in turn reduces weight transfer to the front when off power and gives more rear grip coming into corners.
If you unscrew the shock rod ends to maintain the same amount of rear droop as prior to moving the shocks the difference won't be that noticeable.
You do get a few grams extra weight behind the axle, a bit slower rotation and better bump handling though.
Instead of going to 5000 in the diff I would definitely try the ball diff.
We run the ball diff 90% of the time on all types of surfaces
Bent
This in turn reduces weight transfer to the front when off power and gives more rear grip coming into corners.
If you unscrew the shock rod ends to maintain the same amount of rear droop as prior to moving the shocks the difference won't be that noticeable.
You do get a few grams extra weight behind the axle, a bit slower rotation and better bump handling though.
Instead of going to 5000 in the diff I would definitely try the ball diff.
We run the ball diff 90% of the time on all types of surfaces
Bent
12-28-2015, 12:41 AM
#754
I'm pretty sure you will be able to find a setup that works for you
Bent
12-28-2015, 04:46 AM
#755
The only reason I asked is because a local racers showed up with the new Hobbypro buggy and it has a Lay down tranny 3gear setup and it looks pretty killer in the corners. I'm still going to wait and see what is done spur gear wise for 17.5 as the car seems more mod based currently.
12-28-2015, 05:09 AM
#756
The only reason I asked is because a local racers showed up with the new Hobbypro buggy and it has a Lay down tranny 3gear setup and it looks pretty killer in the corners. I'm still going to wait and see what is done spur gear wise for 17.5 as the car seems more mod based currently.
Car is already at or sub 1500 grams with standard electronics (ours 1480 with standard servo and 4800mAh shorty) and you can't get a more free running or lighter drivetrain than what the XB2 already has out of the box.
Bent
12-28-2015, 07:13 AM
#757
Why does it look "more mod based" ? Except for the spur gear size ?
Car is already at or sub 1500 grams with standard electronics (ours 1480 with standard servo and 4800mAh shorty) and you can't get a more free running or lighter drivetrain than what the XB2 already has out of the box.
Bent
Car is already at or sub 1500 grams with standard electronics (ours 1480 with standard servo and 4800mAh shorty) and you can't get a more free running or lighter drivetrain than what the XB2 already has out of the box.
Bent
12-28-2015, 08:15 AM
#758
I say its more mod based based as for the gearing some of us run our motors at. This car is the same tranny ratio as the B5 and we run 69 and 72 spurs with it. That's all I was referring too. Thanks for the updates and killer response times to all of our questions. You a class act.
As mentioned earlier I'll see if I can get them to maybe put out a 72 spur.
But I doubt there will be a slipper eliminator for now.
Maybe when interest for running the XB2 in stock classes proves to be substantial it might be of interest though
Bent
12-28-2015, 09:39 AM
#760
Biggest difference when moving shocks to the rear is you loose a lot of droop due to the angle of the arms (anti squat).
This in turn reduces weight transfer to the front when off power and gives more rear grip coming into corners.
If you unscrew the shock rod ends to maintain the same amount of rear droop as prior to moving the shocks the difference won't be that noticeable.
You do get a few grams extra weight behind the axle, a bit slower rotation and better bump handling though.
Instead of going to 5000 in the diff I would definitely try the ball diff.
We run the ball diff 90% of the time on all types of surfaces
Bent
This in turn reduces weight transfer to the front when off power and gives more rear grip coming into corners.
If you unscrew the shock rod ends to maintain the same amount of rear droop as prior to moving the shocks the difference won't be that noticeable.
You do get a few grams extra weight behind the axle, a bit slower rotation and better bump handling though.
Instead of going to 5000 in the diff I would definitely try the ball diff.
We run the ball diff 90% of the time on all types of surfaces
Bent
As for the ball diff, it is a bit of a mystery to me right now. No instructions how to adjust or rebuild. I'll wait until more information is available. I've been following this thread and I realize I will need to dissamble it, put grease in it, rebuild it, break it in and adjust it before I can actually use it. I race nitro 1/8 so I have no idea about ball diffs.
12-28-2015, 10:00 AM
#761
guys as far as running your 69 tooth spur im sure theres a way to make something ork that will be a direct drive unit you just need to use your imagination. if you want something bad enough theres always a way. someone somewhere is running this buggy in 17.5
12-28-2015, 10:02 AM
#762
So, what makes it good is not the actual shocks in the rear, it's the fact that the rear droop has been reduced? Makes sense. The car is awesome the way it is setup now.
As for the ball diff, it is a bit of a mystery to me right now. No instructions how to adjust or rebuild. I'll wait until more information is available. I've been following this thread and I realize I will need to dissamble it, put grease in it, rebuild it, break it in and adjust it before I can actually use it. I race nitro 1/8 so I have no idea about ball diffs.
As for the ball diff, it is a bit of a mystery to me right now. No instructions how to adjust or rebuild. I'll wait until more information is available. I've been following this thread and I realize I will need to dissamble it, put grease in it, rebuild it, break it in and adjust it before I can actually use it. I race nitro 1/8 so I have no idea about ball diffs.
12-28-2015, 10:07 AM
#764
K am I doing something wrong, to remove the transmission is 6 screws not 4? Swear it was advertised as 4 screws haha.
12-28-2015, 10:24 AM
#765