Originally Posted by vito

got a b 4 on layaway at the shop they had two in stock ill race this and put my losi 22 to mid now

Originally Posted by Grasschopper

Sorry no you won't. The ball is identical as are the threads and the length of the ball stud from the center of the eyelet to the end of the threaded part. The B5 eyelet looks like they beefed it up a bit but I never had a B4 eyelet break in 3 years and in 3 race days I had a B5 eyelet break. I replaced it with the B4 part as the LHS didn't have the B5 part in stock and it is working just fine.

Originally Posted by Wild Cherry

I'm waiting for more B5m to arrive.

Think you will enjoy switching to mid design & driving the 22 .
A great project for you...

Originally Posted by predu

umm ok. i tried to use the blue b4 bottom balls and the hole is too small, hence why i said you need to use b5 parts. 3mm is bigger than 4-40.

maybe i just got 8 mismade b4/sc10 lower ft balls. good thing my b5 ones were made right.

Originally Posted by DG Designs

Design looks familiar

Originally Posted by gticlay

No, I have never had the need to sand them to build a smooth long lasting diff. But nothing wrong with people that want to.

Originally Posted by Matt Trimmings

You cant use old with new. You either need to use the new eyelets and balls or use the old eyelets and balls. Like you said the new eyelets wont work with the old balls.

Originally Posted by predu

i had no problem puting b4 balls in b5 eyelets. it was the b4 balls the 3mm b5screw would not go thru them.

Originally Posted by Wild Cherry

Totally agree , nothing wrong with sanding as it will do no harm.

Just think it's not near as important as learning how to do break end & adjustment for tuning...

How tight have you been running yours of late ?

Myself have been enjoying setting for the tight side.
Can't turn the wheel with out the motor & spur moving as well.

78/21 7.5

Originally Posted by Wild Cherry

Totally agree , nothing wrong with sanding as it will do no harm.

Just think it's not near as important as learning how to do break end & adjustment for tuning...

How tight have you been running yours of late ?

Myself have been enjoying setting for the tight side.
Can't turn the wheel with out the motor & spur moving as well.

78/21 7.5

Originally Posted by PFKAOG

For diff rings and ball - Just drop a Bfast diff kit in and forget about it.....

Originally Posted by Jason Snyder

Thanks......

already shot the turnbuckle video.....the rest is in the works. And please don't tell me what I have time for......this is a hobby and a hobby only...

As a side note many people are still waiting for the B5M....these cars are brand new......I'm looking to make a first post similar to the RB6 thread.....but keep in mind that car has been out for years........it'll take time to collect, organize and enter all the information.


P.S. Please

Originally Posted by Jason Snyder

I'm looking to make a first post similar to the RB6 thread.....but keep in mind that car has been out for years........it'll take time to collect, organize and enter all the information.

Originally Posted by predu

umm ok. i tried to use the blue b4 bottom balls and the hole is too small, hence why i said you need to use b5 parts. 3mm is bigger than 4-40.

maybe i just got 8 mismade b4/sc10 lower ft balls. good thing my b5 ones were made right.

Originally Posted by predu

i had no problem puting b4 balls in b5 eyelets. it was the b4 balls the 3mm b5screw would not go thru them.

Originally Posted by Matt Trimmings

Gotcha. Overall there is not an issue to use the older stuff if youre in a bind and cant get newer.