Not true. 25 degrees of caster will provide more steering on slow sections of the track where the car isn't rolling much, but less in the faster sections when the car is rolling a lot, like the sweepers. 30 is the opposite, it will give you more steering in the sweepers, but less in the infield.

The 25 degree block gives you more corner entry steering and the 30 block provides more exit steering.

plus 1

Ctp america

not saying your wrong


25= less steering in the middle & out , which is most of the turn ....

i just bought the +12 chassis for my b4.1. I need to know what body fits it and a good set up to start running indoors high bite clay. Thanks

The FTW body fits.

Not sure of the name of the body though. I believe that it's listed as being for the T4 chassis which is +12mm over the stock B4.1 chassis.

Setup? Don't know off hand. I know a few people that have been running a T4 chassis and I never did ask if they changed the setup from what they had been running on the short chassis.

I think this will fit...

I also run the +12 rcrd chassis and the proline bulldog fits fine. With the flange on the chassis, the front gets a little wide for the body. I made up some nice mounts to space the body. Just make sure you trim it long at the back. With the +12 it ends up being the same wheelbase as a 22.

The wheelbase with a +12 chassis on a B4 is 285mm. The T4 chassis is 288mm and the B4 is 273mm. So the T4 is 15mm longer than the B4 chassis. Start with cavaleri's worlds setup. Should get you pretty close, then fine tune from there. I am running pretty close to that but have changed oils a bit, F orange /R dark yellow kyosho springs.

I built myself a +8mm B4 and found that any and all B4 bodies should fit.
I am still using the stock original B4 body on mine and it fits like a glove, plus it's stealthier since people don't realize it is a modded chassis.
I prefer the look and feel of the stock original bodies over the cab forwards as well.

guys, sorry couldnt find a B4 thread. Will a lipo battery fit in the battery tray for a B4? My racing budget is tight and i can get a good deal on a new B4 kit. thanks.

Lipo will fit, that's what most all of us are using nowdays.

Like Ruffy said they will fit but the battery strap is a tight fit with the original B4 shock tower. Either sand the bottom of the tower or order a B4.1 rear tower, which will have the updated "4th hole" location as well.

thanks guys.

What's a good gearing for a 7.5t motor?

Running 81t spur and 21t on the pinion right now. Motor is a cool 110d after a pk.

Every track is different, I'm surprised your not getting a higher temp with what your running. I would keep adding a tooth at a time to the pinion until you get the temps and performance you want.