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-   -   Tamiya TB-Evolution IV (https://www.rctech.net/forum/electric-road/38204-tamiya-tb-evolution-iv.html)

loosenut 02-28-2005 05:30 PM

Re: Diff. shim adjustment question
 

Originally posted by loosenut
Got a question...

On the instruction (step 3) it says to put (3) 10x.03mm shims on the left side of the rear diff. and (1) 10x.1mm shim on the right side...but with this - there's still alot of play! IS it ok to put an extra 10x.03mm shim on the left side of the diff.? I did that and the play was almost gone but I noticed that the diff unit is not as center ... as least as much as I like it to be...


Thx.

Gary

Anyone...help?

F. Alonso 02-28-2005 07:41 PM

They just use that as an extremely sparse guess. It seems as if you really need to just try putting more in the reduce the slop. It's a trial and error thing and just as long as it doesn't bind and the gears are not too far apart, then you will have a fast and reliable drivetrain that won't chew up the bevel gears or the oneway gears in an accident (I've only ever had 2 break on me, and they were both in massive rolls).

So yeh, just keep putting more in until it has NO MOVEMENT. Then, remove 1 shim and put it back in and see if there is a hint of play. If there is, then it should be okay. Best thing to do is to just create the bulkheads with the diffs inside them but not the bevel gears. Then try to spin it and see how long it spins for. If it goes for about 3-5 seconds or so then that should be fine. So make it as close to binding as possible, without binding, if that makes sense.

alan1467 02-28-2005 11:18 PM

For Sale
 
I have a Jurgen oneway and spool for a EVOIII/EVOIV on EBay


http://cgi.ebay.co.uk/ws/eBayISAPI.d...e=STRK:MESE:IT


http://cgi.ebay.co.uk/ws/eBayISAPI.d...sPageName=WDVW

loosenut 02-28-2005 11:32 PM


Originally posted by F. Alonso
They just use that as an extremely sparse guess. It seems as if you really need to just try putting more in the reduce the slop. It's a trial and error thing and just as long as it doesn't bind and the gears are not too far apart, then you will have a fast and reliable drivetrain that won't chew up the bevel gears or the oneway gears in an accident (I've only ever had 2 break on me, and they were both in massive rolls).

So yeh, just keep putting more in until it has NO MOVEMENT. Then, remove 1 shim and put it back in and see if there is a hint of play. If there is, then it should be okay. Best thing to do is to just create the bulkheads with the diffs inside them but not the bevel gears. Then try to spin it and see how long it spins for. If it goes for about 3-5 seconds or so then that should be fine. So make it as close to binding as possible, without binding, if that makes sense.

Thx...it freaking takes alot of shims to get it right...hehe..
G

loosenut 03-01-2005 12:14 AM

quality on this car is amazing

rice 03-01-2005 12:24 AM


Originally posted by loosenut
quality on this car is amazing
:nod: dont hav any prob on ur car?

GroffBall 03-01-2005 08:45 AM

What size bearings are in the rear hub carriers? Mine need replaced.

McSmooth 03-01-2005 08:53 AM

OK, without going through all 93 pages in this thread...

A friend of mine has an Evo-4 that he will be racing at a couple TCS races. Does anyone have a good pavement setup for this car? Since it's a TCS race, obviously only Tamiya parts are allowed.

Thanks!

GroffBall 03-01-2005 09:08 AM


Originally posted by McSmooth
OK, without going through all 93 pages in this thread...

A friend of mine has an Evo-4 that he will be racing at a couple TCS races. Does anyone have a good pavement setup for this car? Since it's a TCS race, obviously only Tamiya parts are allowed.

Thanks!

I'm running 45wt oil the whole way around, 2nd hole from the outside on the shock towers, outside whole on the arms I think, yellow springs rear, blues front, hmmm thats all I can think of right now. Obviously A's and with orange HPI inserts.

I'm looking for a good starting gearing for a tight track and a reedy quad mag 19t.

McSmooth 03-01-2005 10:37 AM


Originally posted by GroffBall
I'm running 45wt oil the whole way around, 2nd hole from the outside on the shock towers, outside whole on the arms I think, yellow springs rear, blues front, hmmm thats all I can think of right now. Obviously A's and with orange HPI inserts.

I'm looking for a good starting gearing for a tight track and a reedy quad mag 19t.

I can help with that!

I drive on a tight track, and my final drive ratio is 6.3. I run a TC4 (2.5 drive ratio) geared 38/96.

On the Quad Mag, I have found 2 brush/spring setups that work equally as well.

1. Reedy 768 Brushes with Purple Springs
2. Reedy 769 Brushes with Black Peak/Orion Viper Springs

What Tamiya insert would be the equivalent of the HPI Orange?

GroffBall 03-01-2005 11:13 AM

Is that final drive ratio with rubber tires, if not what is your rollout?

HPI orange is a medium type insert, if you are setting it up for TCS you can run whatever insert you like, you do not need to stick with Tamiya. I prefer the HPI inserts to the Tamiya ones.

McSmooth 03-01-2005 11:28 AM


Originally posted by GroffBall
Is that final drive ratio with rubber tires, if not what is your rollout?

HPI orange is a medium type insert, if you are setting it up for TCS you can run whatever insert you like, you do not need to stick with Tamiya. I prefer the HPI inserts to the Tamiya ones.

That gearing is with 2.35"/60mm foams.

Thanks for the tip on tire inserts at TCS races. I'll pass that along.

madjack 03-02-2005 02:17 PM

My EVO is on the auction block...
 
to any interested parties, I'm parting ways with my EVO4. It's a very nice car...chances are if your thinking of a hop-up item the car probably has it included:sweat:

http://www.rctech.net/forum/showthre...threadid=65021

Hebiki 03-02-2005 02:38 PM

Re: My EVO is on the auction block...
 

Originally posted by madjack
to any interested parties, I'm parting ways with my EVO4. It's a very nice car...chances are if your thinking of a hop-up item the car probably has it included:sweat:

http://www.rctech.net/forum/showthre...threadid=65021

wow! :eek:

madjack 03-02-2005 05:53 PM

Re: Re: My EVO is on the auction block...
 

Originally posted by Hebiki
wow! :eek:
surprised at the sale or you like the price?


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