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Old 09-04-2003, 10:02 AM   #3331
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Quote:
Originally posted by serpentracer1
Being its a really tight track I have the orig gear diff from my orig car with a 24pulley(ive got the opt gear orig is 26) on the front,if im right in putting this in the car because of the tech track I'll be able to run harder in and out of the corners because I will now have more brakes and with the over drive I use pull from corner to corner depending on the length of the race(main) I may go alittle higher on the over drive to allow for tire wear so I will end up with some over drive towards the end of the race..Should I build the front diff with 50,000 or 100,00 diff lube.Id be glad to hear some opinions on this. Thanks
26T on the front diff pulley? Are you sure? They are only 24T on the front gear diff like the pulley on the one way and the solid front axle.

Anyway, running overdrive with a front gear diff will make the car drag off power. Same too if you run a solid front axle. The front wheels are locked to the whole drive train unlike one way front diff and not allowed to roll by itself off power. Since the front wheels will cover a greater tire rollout because of the front overdrive, it will tend to pull the rear when the car is OFF power and hence the car will drag... Perhaps this would be good and will somehow act like a drag brakes but I don't think it'll be good for the front belt. Think about it... On power, the front belt gets strained because you're on overdrive. Off power, the front belt also gets strained because the front gear diff is locked to the drive train. Not to mention tension and strain when you apply brakes... With a front one way diff, the front belt only gets tensioned and strained on power and the front belt rolls freely off power.

2.5% overdrive or 1.5 mm worth of tire diameter difference is not too bad. If you decide to run a front gear diff, I think you'll still end up with the rear wearing out faster than the front. So no need to worry about starting out with more front overdrive because you'll get more front overdrive towards the end of the main.

Anyway, I noticed that my race buddy's car equipped with a front gear diff will wear about the same in the front and rear. Perhaps this is due to the full time 4WD.
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Old 09-04-2003, 10:05 AM   #3332
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Yea I run the m8 myself and use the futaba recievers in my cars fits nice in the car
Can you use M8 Tx with Futaba Rx?
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Old 09-04-2003, 10:06 AM   #3333
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Smile Another-lame-excuse-why-i-haven't-any-pictures!

Been too busy trying to kill myself in the Austrian alps!
Took part in a 240km (150 miles) bike race which went over 4 very big mountains - in all we did 5,500 meters (18,000 feet) of climbing!!! It took me 10hours 50minutes to complete and 5 hours of that was in pouring rain - see picture!
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Old 09-04-2003, 10:09 AM   #3334
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Default Shooter 4 mm Chassis - Part 1

Ok, as promised, a pic of the 4 mm chassis I got. Notice the cooling holes in the engine section and the cooling holes in the front, not to mention the front part being more solid. Less chamfering at the sides.
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Old 09-04-2003, 10:11 AM   #3335
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Yes you can either use airtronics or futaba crystals
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Old 09-04-2003, 10:11 AM   #3336
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Default Shooter 4 mm Chassis - Part 2

Another.
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Old 09-04-2003, 10:13 AM   #3337
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Default Re: Shooter 4 mm Chassis - Part 2

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Another.
That look bloody strong!!!
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Old 09-04-2003, 10:17 AM   #3338
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Quote:
Originally posted by serpentracer1
Yes you can either use airtronics or futaba crystals
Ok, this is new to me. Let me get this straight... You're saying I can do this type of pairing?

Futaba Tx ---> M8 Rx
M8 Tx ---> Futaba Tx

But whatever pairing combination I use, I need to use the same make of cyrstals right (i.e. Futaba Rx and Tx cyrstals or Airtronics Rx and Tx crystals)?

No problems with glitching?
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Old 09-04-2003, 10:19 AM   #3339
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yea they make a 26 #801370 and 24 #801376 Ive got spares when the first spec came ou tso I want to try it out on a tight track should work well yea thats what I was thinking about the car draging I might be able to dial enough brake out so the car rolls faster thru the corner might be alittle stress on the belt but not to much.when I try it I'll let yall know how I end up with it I just need to know about the diff lube 50,000 or 100,000
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Old 09-04-2003, 10:20 AM   #3340
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Default Re: Another-lame-excuse-why-i-haven't-any-pictures!

Quote:
Originally posted by markp27
Been too busy trying to kill myself in the Austrian alps!
Took part in a 240km (150 miles) bike race which went over 4 very big mountains - in all we did 5,500 meters (18,000 feet) of climbing!!! It took me 10hours 50minutes to complete and 5 hours of that was in pouring rain - see picture!
My dear Mark,

Why do you have to put yourself to this kind of torture? Doing some atonement for the things you previously did to your car?

Hey, I think more time spent with the car will do you both good
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Old 09-04-2003, 10:21 AM   #3341
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yea ive run it like that for 10 yrs as long as the tx and rx are the same make and I use the std fm mini reciever from futaba not the pcm (havnt tried it) Ive run it on carpet in the dirt and nitro never had a problem
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Old 09-04-2003, 10:21 AM   #3342
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Default Re: Re: Shooter 4 mm Chassis - Part 2

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That look bloody strong!!!
It bloody better be
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Old 09-04-2003, 10:22 AM   #3343
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Yeah Initial D. That is correct.

Airtronics dont make any radio equipment. They contract Futaba to make everything. So basically both are standard Futaba crystals repackaged and rebranded. Even the standard Airtronics servos are just replica S148/S3003s.

I have a few Airtronic standard servos and have mixed the parts with proper Futaba gear to make up a good servo out of 2 after a bad crash with my R/C plane.
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Old 09-04-2003, 10:25 AM   #3344
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Believe it or not I have a friend of mine thats a national champ who used to use this setup all the time he said that they found that using the futaba reciever has a stronger and faster signal with the m8 so Ive used it ever since
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Old 09-04-2003, 10:26 AM   #3345
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Quote:
Originally posted by serpentracer1
yea they make a 26 #801370 and 24 #801376 Ive got spares when the first spec came ou tso I want to try it out on a tight track should work well yea thats what I was thinking about the car draging I might be able to dial enough brake out so the car rolls faster thru the corner might be alittle stress on the belt but not to much.when I try it I'll let yall know how I end up with it I just need to know about the diff lube 50,000 or 100,000
I think there's a typo by Serpent on mytsn. Part number 801370 is the complete front gear diff and it says that the front diff pulley is 26T. I believe it should be 24T. Part number 801376 24T gear diff case housing is actually the same one you get with the 801370 complete front gear diff set. Count the number of teeth and you'll see. Else you'll surely have problems mounting the front belt.

Let us know how the front gear diff works out in the car. I'm actually interested to get a front gear diff for myself when I run on super tight tracks
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