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Old 07-29-2003, 11:45 PM   #2866
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Quote:
Originally posted by taz5176
i've tried looking up in mytsn, the 909376 50t is a replacement part for the 909390 ball-diff pro ev2, not sure if it's still in production.
but from the looks of it, 909376 & 909377, everything is abt the same except for the 3 holes for the pins to go in.
Well, the EV2 ball diff is basically the same with the current ball diff. I think just that some internals are different. They use the same pulleys and the 909376 will fit in the 705 ball diff.


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Originally posted by taz5176
if i were to use the pulleys, i oso need to get the 1374 Thrust bearing 15x28x9 diff or 1376 Thrust bearing 15x28x9 light (tink this one discontinued liao)
I don't know if you can find this in Hobbylink. Just get this 15x28x9 thrust bearing at any bearing shop. You should be able to find them at a cheaper price. Pop out the balls and use them. If you get the FPS, it already comes with these balls. Well, you can have spares for them then. However, I don't think they need replacement as I don't think they'll wear out

Quote:
Originally posted by taz5176
i was hoping to use 909377, coz in future if i were to get the fps, i can use it too. pls advice...
I have actually not looked closely if I could use the 50T from the FPS (909377) in the normal ball diff... Will check it out for you.


Quote:
Originally posted by taz5176
oh ya, almost forgot to ask...
d, now ur drive's ratio is definitely higher, how's the performance of ur car compare to previous ratio?
Ballistic Car lauches very hard. The feeling is as though the same as putting the fixed 13T/16T Centax pinions clutchbell on my Impulse with the stock internal pulleys. On smaller tracks, this is very useful
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Old 07-30-2003, 12:20 AM   #2867
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Quote:
Originally posted by InitialD
Ballistic Car lauches very hard. The feeling is as though the same as putting the fixed 13T/16T Centax pinions clutchbell on my Impulse with the stock internal pulleys. On smaller tracks, this is very useful
ahhhhhhhh... this is wat i wan! thx d for the info
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Old 07-30-2003, 01:16 AM   #2868
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Quote:
Originally posted by taz5176
ahhhhhhhh... this is wat i wan! thx d for the info
I tried putting the 13T/16T fixed Centax pinion with the 50T/22T/16T internal pulley combos... That gives about 8.74 and 6.53 for the 1st and 2nd gear with 50T/46T spurs... Well, that's like ideal if you run on a mini-z like track

Well, it was very difficult to control the 2 speed engagement because you need to set it to engage earlier. Well, I guess that is what you call point of diminishing return
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Old 07-30-2003, 03:18 AM   #2869
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thanks for the reply D and nizee i think like you said that the housing is slipping on the clutch material as i have experimented with different end plays to no avail i think i will have to exclude one old piece at a time with newer better bits to find the answer.
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Old 07-30-2003, 03:22 AM   #2870
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Quote:
Originally posted by InitialD
I don't know if you can find this in Hobbylink. Just get this 15x28x9 thrust bearing at any bearing shop. You should be able to find them at a cheaper price. Pop out the balls and use them. If you get the FPS, it already comes with these balls. Well, you can have spares for them then. However, I don't think they need replacement as I don't think they'll wear out
hey d
bearing store oso sell the 2 metal washers? btw, the measurement 15x28x9, wat does it mean?

oh ya, u got the part # for the rear belt? do u change the side belt too? wif the 16t rear side pulley, definitely gotta make the hole for the belt tensioner bigger/longer

Last edited by taz5176; 07-30-2003 at 03:48 AM.
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Old 07-30-2003, 03:46 AM   #2871
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Originally posted by taz5176
hey d
bearing store oso sell the 2 metal washers? btw, the measurement 15x28x9, wat does it mean?
Which metal washer? The one that holds and compresses the balls together in the normal ball diff? They actually come with the part number 8378. I think that one will have to come from Serpent. Please refer attached pic. The two plates that comes with this 15x28x9 thrust bearing is not used when you use the balls and put it in the normal diff with the 50T diff. You only take the balls out from the cage.

If you're using the FPS diff, then these two plates that come with the 15x28x9 thrust bearing will be used.

15 mm inner diameter
28 mm outer diameter
9 mm thickness
Attached Images
File Type: bmp balls_plates.bmp (164.4 KB, 71 views)
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Old 07-30-2003, 06:09 AM   #2872
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What are you guys using for grease on the dif balls? I just rebuilt with mugen super grease and now the dif is smooth but hard to turn (like having heavy wt dif oil in a gear dif) I'm thinking of changing to a different grease on the balls. What do you guys suggest?
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Old 07-30-2003, 09:05 AM   #2873
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Quote:
Originally posted by Devin
What are you guys using for grease on the dif balls? I just rebuilt with mugen super grease and now the dif is smooth but hard to turn (like having heavy wt dif oil in a gear dif) I'm thinking of changing to a different grease on the balls. What do you guys suggest?
I'm using Ronnie Grease (from Ron Paris Racing) all this while. In my opinion, it works great for me.

Just a tips on putting the grease on the ball diff. Just use your pinky to scoop the grease and just spread it on the plate. Not to much on the plate just a thin layer of it. Next, put some grease on your palm, put all of your balls together with it in your palm. Roll all the balls making sure it cover with the grease. Assemble the whole diff and you done.
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Old 07-30-2003, 10:02 AM   #2874
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Thanks for the info. I'll have to find a place to find some good grease...maybe I applyed too much, but the mugen super grease seems too heavy for this application. I do believe that it works well in the centax thrust bearing though!

Last edited by John Fontaine; 07-30-2003 at 10:45 AM.
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Old 07-30-2003, 10:27 AM   #2875
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I use assoc. black grease found at any hobby store, it seems to work great for my car.
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Old 07-30-2003, 11:04 AM   #2876
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Quote:
Originally posted by Devin
Thanks for the info. I'll have to find a place to find some good grease...maybe I applyed too much, but the mugen super grease seems too heavy for this application. I do believe that it works well in the centax thrust bearing though!
I use this same Mugen grease as well on the ball diff as well as the Centax thrust bearings. Excellent stuff. It could be that you applied too much grease on the balls of the ball diff. Use it sparingly. I thought I read somewhere that Serpent mentioned this balls need not be greased. Only the thrust bearing in the ball diff needs to be greased. Even then, it should be greased sparingly to avoid any dirt sticking and grinding it as sandpaper.

Anyway, greased or not, after running it for a tank or two at most, the ball diff should be smooth again.
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Old 07-30-2003, 11:12 AM   #2877
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It's smooth, just tough to rotate.. I'll rip it apart, clean it and than use the technique that nizee mentioned. And I found a perfect material to use for my shield covers at work. 30 Mil aclar film. Post pics when it's done.
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Old 07-30-2003, 11:22 AM   #2878
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Quote:
Originally posted by Devin
It's smooth, just tough to rotate.. I'll rip it apart, clean it and than use the technique that nizee mentioned. And I found a perfect material to use for my shield covers at work. 30 Mil aclar film. Post pics when it's done.
How about sending some to me if it works !
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Old 07-30-2003, 11:25 AM   #2879
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.

Last edited by InitialD; 07-30-2003 at 11:40 AM.
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Old 07-30-2003, 11:37 AM   #2880
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Last edited by nizee; 07-30-2003 at 12:01 PM.
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