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Old 10-20-2015, 12:22 PM   #1186
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TB04 ball diff is 54522 and has all of the parts in a set.

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does anyone know of a good thrust bearing for this diff, I built mine and it just always seems like it is gritty right from a new build
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Old 10-20-2015, 01:41 PM   #1187
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does anyone know of a good thrust bearing for this diff, I built mine and it just always seems like it is gritty right from a new build
Here's a TOP 2x6 thrust bearing with ceramic balls that should help the gritty feeling. T.O.P. Racing (PO-PTB602C). TQ usually has them in stock but they are out of stock now.

Attachment 1324319

I'm using the Tamiya thrust bearing and 3mm steel balls right now and I agree that the diff has the gritty feeling you describe even when packed with Associated Black grease as thickly as I could get it in. I've got a bunch of time on the diff though and the grittiness hasn't gotten any worse. It hasn't affected performance though https://youtu.be/SmhEgHJtItQ?t=108
On power forward bite is crazy with the EXO6 The guy in second following me took third at the ROAR Nat's in GT10. He's driving an Xray T4 belt car
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Old 10-20-2015, 03:21 PM   #1188
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When you say forward bit you mean steering of pulling out of a turn ? Is the rear hooked up good? Gear diff in rear what are you using up front
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Old 10-20-2015, 03:33 PM   #1189
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Here's a TOP 2x6 thrust bearing with ceramic balls that should help the gritty feeling. T.O.P. Racing (PO-PTB602C)
are you changing the stock diff screw out with that thrust bearing? I am assuming that's a normal sized 620 thrust bearing and if so everyone I have found the stock slot head diff screw is to big for any 620 thrust bearing I have aka Tamiya 49300
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Old 10-20-2015, 08:20 PM   #1190
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Questions?? Evo 5 ring gear on spool

If I decide to use the 51522 ring gear on the front spool do I need another pinion gear or is the Evo5 pinion gear the same as on the evo6/TB04 ?
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Old 10-20-2015, 08:21 PM   #1191
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Questions?? Evo 5 ring gear on spool

DBL Post

Last edited by Johnn27; 10-20-2015 at 08:23 PM. Reason: DBL Post
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Old 10-20-2015, 08:28 PM   #1192
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When you say forward bit you mean steering of pulling out of a turn ? Is the rear hooked up good? Gear diff in rear what are you using up front
Forward bite means forward traction when pulling the throttle, whether turning or going straight.
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Old 10-20-2015, 11:48 PM   #1193
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If I decide to use the 51522 ring gear on the front spool do I need another pinion gear or is the Evo5 pinion gear the same as on the evo6/TB04 ?
The ring and pinion gear (51522) comes as a set. Just use the pinion gear that comes with set.
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Old 10-21-2015, 12:09 AM   #1194
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Forward bite means forward traction when pulling the throttle, whether turning or going straight.
What he said.... couldn't have put it better myself. Thanks Mike! You can also see how much off power corner speed the chassis carries through turns. All (or most) of the space put on another car was in the infield. Pretty even with most of the field down the straight. I geared the car to take advantage of the EXO 6s infield edge. The car also brakes very well with the lightened drive train we talked about in an earlier post...This all adds up to a very driveable car. You can put it anywhere when you need to get up on the wheel to pass or defend.
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Old 10-21-2015, 12:24 AM   #1195
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are you changing the stock diff screw out with that thrust bearing? I am assuming that's a normal sized 620 thrust bearing and if so everyone I have found the stock slot head diff screw is to big for any 620 thrust bearing I have aka Tamiya 49300
If you look at my earlier post 1187, I was offering this as a possible fix to you for a gritty feeling diff. The ceramic balls should do a better job of making the diff action feel a lot smoother. I haven't tried this bearing yet myself, but intend to when it is back in stock at TQ. I'll let you know then if the diff screw needs to be changed. Been running Tamiya stuff so long that I've accumulated every diff screw they've made
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Old 10-21-2015, 04:13 AM   #1196
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does anyone know of a good thrust bearing for this diff, I built mine and it just always seems like it is gritty right from a new build
Never had that problem with the tamiya thrust bearing. Are you motor spraying the bearing then putting the aw grease in it?
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Old 10-21-2015, 10:01 AM   #1197
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If you look at my earlier post 1187, I was offering this as a possible fix to you for a gritty feeling diff. The ceramic balls should do a better job of making the diff action feel a lot smoother. I haven't tried this bearing yet myself, but intend to when it is back in stock at TQ. I'll let you know then if the diff screw needs to be changed. Been running Tamiya stuff so long that I've accumulated every diff screw they've made
ya I assumed you had tried it my bad, I have the Tamiya 620 the old style diff screw would fit not the large tb04 screw. a little unsure if the thin screw would have any effect on the diff not a straight pull to tighten type thing.
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Old 10-21-2015, 10:10 AM   #1198
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Never had that problem with the tamiya thrust bearing. Are you motor spraying the bearing then putting the aw grease in it?
yes I cleaned it all before building it. the stock thrust is not a one piece bearing but I clean all the little balls and plates. just hoping someone else built this diff with either the stock thrust or found a good thrust bearing and if they had to do anything to make it feel smooth.
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Old 10-21-2015, 10:45 AM   #1199
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What's the difference between the TB04 vs TB03 ball diff (other than the gears)?
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Old 10-21-2015, 10:57 AM   #1200
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I'm using the Tamiya thrust bearing and 3mm steel balls right now and I agree that the diff has the gritty feeling you describe even when packed with Associated Black grease as thickly as I could get it in
you are using the 39t gears? or the 40? as the tb04 diff gear has 3/32 diff balls for the Tamiya diff
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