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Old 04-28-2008, 03:44 PM
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Make sure the screws for your motor mounts are secure, top and bottom, and make sure you dont have any extra movement in the endbell.
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Old 04-28-2008, 03:53 PM
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Originally Posted by ajsilva
Hi guys,
I have smal problem (big) , my gears don't less longer in my serpent 720 . I notice that the pinion and the gear (news) don't match properly (17/61 or 60) .
Do someone knows about this ? they less no longer than 5 minutes (I ensure that the gap is ok).
A lot of times I have to set them a little tight and run them in with no load!! Basically use light pressure to push the pinions closer to the gears and run the car up in the air for about 5 minutes letting them seat together. It should free up and become smooth and last a long time as long as the pinions are not sharp or worn too much!!
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Old 04-28-2008, 04:51 PM
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Centax 3 question....building my 720 and the clutch is the last thing to deal with. Usually when I am building Centax 2, I need a 0.5mm shim before the colar then the flywheel and whole 9 yards...but on the Centax 3 manual, it does not show that I need any....however, on my parts bag, it has several shims....do I need that 0.5mm shim...?

On Serpent website, it said DON'T forget to add that shim....I've tried that, and my clutch gap is like ZERO...llike I don't need any shim...that does not make sense.

If without the shim....at least I need to add 0.1mm shim to set the 0.7mm clutch gap...

So, do I need that shim or no..? Thanks...
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Old 04-28-2008, 05:07 PM
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I do not think you need it. I do not use it. Just make sure that the flywheel clears the case.

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Old 04-28-2008, 05:27 PM
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Originally Posted by dj apolaro
I do not think you need it. I do not use it. Just make sure that the flywheel clears the case.

DJ Apolaro
Thanks DJ...I thought I have to wait untill tomorrow morning to get my answer.

Since you are here...what is your Centax 3..? Are you using yellow shoe? What kinda flyweight? what springs..? You use the 1.8 spring or not..? What is your clutch gap..? Thanks...
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Old 04-28-2008, 09:36 PM
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Originally Posted by Solara
Thanks DJ...I thought I have to wait untill tomorrow morning to get my answer.

Since you are here...what is your Centax 3..? Are you using yellow shoe? What kinda flyweight? what springs..? You use the 1.8 spring or not..? What is your clutch gap..? Thanks...
I think he is running 1.6mm tension on the nut. He is also running the 1.8 black spring. Flyweights I'm not sure...I run the regular weights cut to fit between the pins instead of on them and my clutch gap is .6 All of this with noshim behind the collar!!
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Old 04-29-2008, 05:10 AM
  #3547  
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Originally Posted by Solara
Thanks DJ...I thought I have to wait untill tomorrow morning to get my answer.

Since you are here...what is your Centax 3..? Are you using yellow shoe? What kinda flyweight? what springs..? You use the 1.8 spring or not..? What is your clutch gap..? Thanks...

Yellow shoe, stock weights, 1.8 spring, .6 to .7 gap and spring tighened 1.7 to 1.9.

I recommend tighening your spring to 1.5 to start and if you need more go to 1.7 or 1.8.

This clutch set-up is very good and consistent.


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Old 04-29-2008, 08:47 AM
  #3548  
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Originally Posted by dj apolaro
Yellow shoe, stock weights, 1.8 spring, .6 to .7 gap and spring tighened 1.7 to 1.9.

I recommend tighening your spring to 1.5 to start and if you need more go to 1.7 or 1.8.

This clutch set-up is very good and consistent.


DJ Apolaro
Melvin helped me with the clutch this weekend and followed similar steps and it was night and day difference in performance with the motor. Both temps and performance improved with the motor.

Later
Gael
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Old 04-29-2008, 10:41 AM
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Thanks everyone....great help.

Just did the clutch measurement...in order for me to get 0.7mm clutch gap, I just need to add a 0.1mm shim behind the thrust bearing...does that make sence..? Yes, my end play is very minimum, clutch housing can spin for 2-3 seconds (not 5 seconds unless I am spinning the housing HARD...).

Just want to double check before landing the car on ground...
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Old 04-29-2008, 01:19 PM
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HELP!!! Where can I buy 1 piece Centax-3 16/22T (#802525) or 16/23T (#802526) steel pinion gear? I looked around but no luck. I've tried Ashford, Bruckner, Stormer, Superior...
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Old 04-29-2008, 01:25 PM
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Questions??

What are you guys running front one-way axle or front solid axle, what are the advantages or disadvantage of each, I would be running this car at the homestead track for those who are familiar with that track


Jorge
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Old 04-29-2008, 01:54 PM
  #3552  
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Originally Posted by Mike Schumacher
HELP!!! Where can I buy 1 piece Centax-3 16/22T (#802525) or 16/23T (#802526) steel pinion gear? I looked around but no luck. I've tried Ashford, Bruckner, Stormer, Superior...
Good Luck, I have not seen any for sale in a while. Thank god I kept one for me when they did come in. That was a while ago.

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Old 04-29-2008, 02:10 PM
  #3553  
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Originally Posted by Mike Schumacher
HELP!!! Where can I buy 1 piece Centax-3 16/22T (#802525) or 16/23T (#802526) steel pinion gear? I looked around but no luck. I've tried Ashford, Bruckner, Stormer, Superior...
Try these places....

http://ashfordhobby.com/SearchResult...eyWords=802525

http://www.racedayhobbies.com/720_parts.html
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Old 04-29-2008, 02:45 PM
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SER 802525 have never shipped to the best of my knowledge. I had them on back order from day one. We did get a number of SER 802526's but sold out of them earlier this month. I expect more of these options will start showing up after Serpent delivers the 960-08's in a week or so.
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Old 04-30-2008, 05:29 AM
  #3555  
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when measuring rear droop..do you use the front or rear ball? there is a 1mm difference in the 2.....?
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