Xray XB2 2WD Buggy Thread
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#4111
Tech Addict
iTrader: (7)
Not gonna lie, I was very nervous taking my '17 CE to the track last night. I had issues getting my 22 3.0 lay down working on our med grip indoor trac. However, this thing was a freaking beast, absolutely love the car. First off the only non kit part I choose to go with was the CF chassis. With this and my setup they car already handles better than my buddy's '16 DE!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
#4112
Tech Fanatic
iTrader: (15)
Not gonna lie, I was very nervous taking my '17 CE to the track last night. I had issues getting my 22 3.0 lay down working on our med grip indoor trac. However, this thing was a freaking beast, absolutely love the car. First off the only non kit part I choose to go with was the CF chassis. With this and my setup they car already handles better than my buddy's '16 DE!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
#4113
Tech Champion
iTrader: (76)
Not gonna lie, I was very nervous taking my '17 CE to the track last night. I had issues getting my 22 3.0 lay down working on our med grip indoor trac. However, this thing was a freaking beast, absolutely love the car. First off the only non kit part I choose to go with was the CF chassis. With this and my setup they car already handles better than my buddy's '16 DE!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
I don't believe the car needs the brass rear hangars or the optional steering block extensions. The car has a few tuning options I'd like to explore, but I can tell you I'm running the gear diff with 5k oil without any issues. The big key I've found with running a gear diff on a loose or med grip track it to run a much looser slipper than normal. As with other cars I've had to pre-compress the slipper spring to be able to get to this setting. I'll be putting together a setup sheet for everyone after this weekend's race, but in the mean time feel free to ask any questions and get your kits on order!
#4114
I got my nephew a xb2 for xmass. He is new to racing. What is a good pinion and spur for a 17.5 motor on small indoor track.
#4115
72 spur and 30-33 pinion is a good range for me. 30 is the smalles that will fit with a 72 spur with the CE.... also, depends how old your nephew is. If my kid was driving my X-ray I would probably get the 75t spur as it allows pinions smaller than 30. I gear my kids motor low as he does t need to go fast right now and unattended he will practice with the buggy for over 15 minutes. I can be comfortable knowing he's not blowing up his motor geared low and the 72 spur may not allow you to gear low enough. That said I've also run some of my fastest laps at 75/29 on a tight high grip, technical track... my 2 cents...
#4116
72 spur and 30-33 pinion is a good range for me. 30 is the smalles that will fit with a 72 spur with the CE.... also, depends how old your nephew is. If my kid was driving my X-ray I would probably get the 75t spur as it allows pinions smaller than 30. I gear my kids motor low as he does t need to go fast right now and unattended he will practice with the buggy for over 15 minutes. I can be comfortable knowing he's not blowing up his motor geared low and the 72 spur may not allow you to gear low enough. That said I've also run some of my fastest laps at 75/29 on a tight high grip, technical track... my 2 cents...
#4117
Tech Elite
iTrader: (14)
Ran mine last week... driver was average but car came out good especially after a few tuning tweaks during the qualifiers. The main difference I've seen with the MM3 is that throttling out of lino-based corners is VERY tricky and requires a feather-like index, from memory the MM4 was a bit less sensitive in that area. But, conversely, braking stability is superb, which was a weak point for the MM4...
I have to say that I've also been VERY impressed with the b6M that day and was tempted to make the switch, but I resisted. Will keep running the xb2 for another few races at least.
I have to say that I've also been VERY impressed with the b6M that day and was tempted to make the switch, but I resisted. Will keep running the xb2 for another few races at least.
#4120
Tech Addict
iTrader: (7)
I'd encourage you to give the gear diff a shot. Just remember the gears don't slip like the balls do, so you have to run the slipper a lot loser than you're used to our even comfortable with. As you get the hang of it, tighten the slipper up and you'll see how big of a difference it can make. Great news is the XB2s 3 pad slipper kicks in very fast
#4121
Tech Fanatic
iTrader: (15)
I'd encourage you to give the gear diff a shot. Just remember the gears don't slip like the balls do, so you have to run the slipper a lot loser than you're used to our even comfortable with. As you get the hang of it, tighten the slipper up and you'll see how big of a difference it can make. Great news is the XB2s 3 pad slipper kicks in very fast
#4122
Tech Elite
iTrader: (33)
72 spur and 30-33 pinion is a good range for me. 30 is the smalles that will fit with a 72 spur with the CE.... also, depends how old your nephew is. If my kid was driving my X-ray I would probably get the 75t spur as it allows pinions smaller than 30. I gear my kids motor low as he does t need to go fast right now and unattended he will practice with the buggy for over 15 minutes. I can be comfortable knowing he's not blowing up his motor geared low and the 72 spur may not allow you to gear low enough. That said I've also run some of my fastest laps at 75/29 on a tight high grip, technical track... my 2 cents...
#4123
Tech Addict
iTrader: (7)
this doesnt make sense. with a ball diff you want to run the slipper looser so you don't slip and bark the ball diff. with a gear diff you can run the slipper tighter because you don't have this risk. so in the case of a gear diff you're tuning the slipper simply for the surface and you're preference only. with the ball diff your factoring those in as well as the force it takes to slip the ball diff and run it looser than that point, so the slipper slips first.
Basically, the issue with running a slipper tight with a gear diff is that it shocks the drive line and you're either going to wear out driveline parts quicker or the tires will break loose. Like when you start replacing plastic parts that break with the aluminum part; the next weakest part will break.
#4124
Tech Initiate
Are there any other Wheels out there that work for the Xb2? front and rear?
Thanks.
Thanks.
#4125
Tech Fanatic
iTrader: (15)
Yes, I def agree that this is counter intuitive. With the gear diff you can definitely run the slipper tighter, if you have the traction to do so. I dunno how y'all set slipper tension, but normally we set it so that it just pulls the front wheels off the table. Its enough to keep the car from going wheelie crazy when the grip comes up, but has a tenancy to be a bit rough on a ball diff. While the gear diff essentially cannot slip that allowance we didn't normally account for needs to be added into the slipper. Especially as you go out on lower traction surfaces.
Basically, the issue with running a slipper tight with a gear diff is that it shocks the drive line and you're either going to wear out driveline parts quicker or the tires will break loose. Like when you start replacing plastic parts that break with the aluminum part; the next weakest part will break.
Basically, the issue with running a slipper tight with a gear diff is that it shocks the drive line and you're either going to wear out driveline parts quicker or the tires will break loose. Like when you start replacing plastic parts that break with the aluminum part; the next weakest part will break.
with a gear diff you're not worried about the diff slipping so you simply set it for traction which never ends up looser than a slipper on a ball diff, if anything it would be the same or tighter. that's the point i was making but i digress doesn't really matter anyway. carry on.