Hi,

Does someone know which ball bearings to use with the B4 driveshafts and Rayspeed hubs on a BX, please? Is it simply the B4 bearings?

Thanks!

you are correct. the B4 bearings need to be used.

the other mod needed that I discovered last night is the need to drill the yoke arms for the hub hinge pin. the yoke pin is tto small for the B4 hub so you will need to use a B4 pin and carefully ream out the arm to suit the new pin.

once finished it all looks factory. I will be testing it tomorrow and I am hoping it "hooks" the car up. mine is way too loose in the rear end now.

Thanks ben27111973! Do I also need the B4 bearings spacer (A7377) if using the B4 bearings?

lol, me it's 27111979! :D :D

I ordered the spacers today winehundred along with the rayspeed hub, B4 bearings and hinge pins, should all turn up tomorrow and I can let you know if anything is missing.

Bathy 1973!

Yeah Bathy, great!! So I can order the right parts as soon as I read your report ;)

Thanks! :)

The B4 rear end mod for the BX, parts you need and a picture!


2 AS3977 3/16 x 3/8 bearings.
1 AS7377 B4 axle bearing spacer.
1 AS9599 B4 MIP CVD complete set or shinny CVD (as shown in the picture)
1 AS9622 Hinge pin (these are a little bit short so not sure if there is a better option)
1 RS28 Rayspeed B4 0.5°.
1 AS9608B Associated Factory Blue Aluminium Wheel Spacer.


As I mentioned above the hinge pins are a little short, so I'm thinking about cutting up some old Losi Shock shafts or something... Also I didn't do a very good job of making the holes bigger on the rear arms, but that’ just me.



http://www.jigsaw7.com/uploads/bigki...XB4rearend.jpg

EDIT: one other thing I’ve forgot to mention is the need for different ball studs than the BX ones, Rayspeed hubs have different threads so I used some Losi titanium ball studs.

Great job Bathy, thanks for the review! ;)

I've ordered the following bits as well now, springs are the most important bits the others are just bling really (not that I care what my car looks like huh).:rolleyes:

Part no.Description

• ZM-202G Graphite Servo Saver Parts
• BB-840P Servo Saver Super Precision Bearing
• ZC-206T Titanium Ball Stud
• ZC-BH265T Titanium Suspension Arm Pin Retaining Screw
• BB-1480P Centre Shaft Super Precision Bearing
• BB-148C2 Centre Shaft Ceramic Bearing
• BB-1510C2 Ceramic Bearing
• YS-2BXF MR-4BX Front Spring Set (4 Types, 8 Springs)
• YS-2BXR MR-4BX Rear Spring Set (5 Types, 10 Springs)

I'll let you know when they turn up and give you my views on them.

David

Hi guys, I'm thinking to by a BX, but I running on a loose dirt track, I wonder if the belt and pulley will get very dirty after each run?
or should I stick with a BJ4

Martin

The odd sponsored driver might argue the point, but the car does need more looking after (cleaning) than the likes of a BJ4. The rear diff in particular gets a bit dusty. Its a nice car to work on, one of the best I think, so that does make things a bit better.

bx
 

hi
the bx will get dirty but if you make some diff covers and glue them on it should nt be that much of a problem and velcro the body to the undertray you should be ok. the bx wouldnt handle that good on loose dirt without the mods (thats my opinioun) as bastos won the french national with no mods. my opinioun of bj4's is that we should chuck them in a pile and burn them!!!! lol, they cant be that bad.:D

I you look on yokomo.com under the Japanese link you'll find BX Dust Cover tips from Akira Suzuki, personally I think my effort is better but anyway...

http://10.dtiblog.com/a/akira01/file/SANY0001.jpg

http://10.dtiblog.com/a/akira01/file/SANY0002.jpg


Image courtesy of Yokomo.com

Any chance of some pics of your guard Bathy? :confused:

Quote:

Originally Posted by Jimbo Any chance of some pics of your guard Bathy?

Oh the picture above has moved or something, I can upload a picture mine, cars in a bit of a mess still from national racing weekend just gone.

Were the shots you took of my BX any good Jimmy? I kinda badgered you into taking them while you were clearly still suffering massively from the ‘night before’, sorry about that.

haha, I will have a look! they were with the old fisheye so might be slightly MAD ! ;) but then, everything looked a bit mad on sunday morning.
:drunken:

Suffering as much as you on sat morning huh Bathy? Ya lightweight!

I want a pic of ryans steering mod too...

ive been told my steering mod is bodged up by lee martin. ive tried associated shocks and think they are loads better than yokomo. lee told me to run 35weight in the front 30 in the rear, number 2 pistons all the way round but a extra 1.4mm hole drilled in rear pistons, silver springs all round.

ryan

Were do you order the rayspeed 0.5dg hubs for the mod? I live in the U.S. and I can't find any place to order them?:confused:

@Ryan

for what kinda track is lee's setup? bumby, slippery? or on grass?

and the 1,4mm extra-hole... ist that a 3rd hole or just bore one of the two holes up to 1,4mm?

greets Marco

it is a extra hole, so there will be 3 holes altogether. it is a setup for grass/astro i think.

ryan

You could try microtechracing, think I got some from them before.

Thanks for the tip Bathy. I went there and they were out of stock.:(
I sent them an email to see if they will be getting any in soon. Lets hope.
I have an MR4-XB comming and I want to be able to set it up well from the start. 4dg to in is a bit much by the kit set up don't ya think?

Hi, regarding the issues with dirt on the rear diff... I want to show you a trick: rather than ussing lexan to (try) issolate the front of the rear bulkhead try a little of foam from used tyre inserts. This keeps the dirt off better and do not disturb the belt, the friction is almost zero.

I do not have pictures but i hope you catch the idea.

ty ryan :)

Did your parts show up? I an interested to no how those springs are working out. The kit springs are way to stiff........

Yup got all the parts fine, springs seem fine to me but most 'top' drivers have taken the Yoke shocks off and put B4 ones on... I thought that was because the Yoke spring were not out (still not in the UK... crazy!) but it might be because B4 ones are better/well known.

I expect these new parts to be out in the UK soon, it seems to take forever to ship a few bits in from Japan.

Good to here mate. I called Yokomo usa yesterday and they said that they had them ( the springs) in stock and they would be on the website that nite. WORNG!
I might have to give them another call.:D

I meant to post an image of the dirt coverage I've added to the rear diff of my BX's, someone asked ages ago, hope these shots help...

http://www.jigsaw7.com/uploads/bigkidstuff/bxdirt2.jpg

http://www.jigsaw7.com/uploads/bigkidstuff/bxdirt3.jpg

Looks good. If ever you get a chance could you take a snap shot of your rear camber mod and post it. It looks like the best job I have seen from what I can see.....:)
Cheers,
Nate

Hi cabbynate, not sure if this is the right way of doing it, some people don't even bother doing the mod and it don't seem to slow them down at all!

http://www.jigsaw7.com/uploads/bigkidstuff/bx1.jpg

http://www.jigsaw7.com/uploads/bigkidstuff/bx3.jpg

http://www.jigsaw7.com/uploads/bigkidstuff/bx6.jpg

http://www.jigsaw7.com/uploads/bigkidstuff/bx7.jpg

THANKS Bathy!!!!!!!:)
Excellent photos!!!!!!! I was thinking of doing it similar but your way is ace!!!!!!:smile: I have 2 extra rear camber mounts. 1 to cut down as a spacer an another one so I can always go back to stock setting if necessary.
Thanks again mate!!!! Now I can finally go out and get this DONE!!!!!!!!
Cheers,
Nate

sorry to bring an old thread up but.....regarding the b4 rear cva mod......

Why are people upgrading to rayspeed hub? whats wrong with the b4 hub for the mod?

I also need new front uni as the pin has fallen out.
What alternatives do I have to replacing the front uni/cva to a better design?

I think most use Rayspeed aluminum hubs (I use Trinity) to keep the bling factor going. They also come in .5* and 1* versions where stock B4 plastic hubs don't come in anything other than 0*. There is no problem using stock plastic hubs, one of my buddies uses them and his car is still dialed. The ballstud on the hub is higher, so you need to shim the camber plate up a bit more.

For the front universals you should get the HARD version from Yokomo, they are way better than the originals, and I don't really think there is a better option. I got mine here: http://cgi.ebay.com/ws/eBayISAPI.dll...m=350029511586

Shipping was very quick.

Hope this helps.

thanks, I was looking at those on ebay.
And how does the different 0.5* or 1* make in turns of handling?