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Old 05-23-2003, 09:04 AM   #4126
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Default gear ratios

sorry guys im still new at this but enjoying my mtx3,i need some help with gear ratios can somebody explain how do they work and how can the be applied to any given track,also how do you determine the tooth split,also im upgrading radios from a hitec fm to a computerized unit is the new ko propo ex mars i (i think it is )a good beginers radio,or the futaba 3pk???or what radio will you recommend (keep in mind im just a beginer and don't know much about epa ,throttle exponential etcetcetc......_

thanks for your help
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Old 05-23-2003, 09:14 AM   #4127
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Anyone tried to put an Ofna brick pack in this thing? The 730 pack from Mugen just isn't cutting it anymore. I need more juice!!!!
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Old 05-23-2003, 09:29 AM   #4128
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Quote:
Originally posted by tekrsq
Anyone tried to put an Ofna brick pack in this thing? The 730 pack from Mugen just isn't cutting it anymore. I need more juice!!!!
It doesnt fit in there real nice..... hits against the fuel tank pushing it out on an angle.
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Old 05-23-2003, 09:33 AM   #4129
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Quote:
Originally posted by tekrsq
Anyone tried to put an Ofna brick pack in this thing? The 730 pack from Mugen just isn't cutting it anymore. I need more juice!!!!
how much run time you can get out of the mugen pack? my custom made 5 AAA 700mah cell pack gives me at least 1 hour continous run time !!
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Old 05-23-2003, 10:11 AM   #4130
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i used the brick in other cars in the past and they went bad on me

rdlogics has released a 800mah pack

i also get over 1 hour run time on my mugen 730 pack with 2 digital servos
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Old 05-23-2003, 10:41 AM   #4131
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I don't get it...I wonder if I got a bad pack. I've got 2 Hitec 5625 servos and getting 40 min is PUSHING it. It typically dies at about 30-35 min. A few other guys are running non digitals and don't have a problem, but I don't want to go back to non-digitl servos. I've switched everything over to digitals.

I saw the RD Logics pack on their site, but I don't really see the point of it. It's only 70ma more. If it was a 900 or 1000 pack, that would be different.
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Old 05-23-2003, 11:12 AM   #4132
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tekrsq,

I also run custom 700 mAh in mine with didital servos and never ran out of power during a race.

I think the "secret" lies in the way you charge them.

In the beginning I charged with 1-1.5 amp and had problems. My charger only put 450-500 mAh in the pack.

Now I'm charging at 0.7 amp with 50 mV threshold and they are fine.
I get 750-800 mAh in them.
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Old 05-23-2003, 12:12 PM   #4133
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Originally posted by kevink2
I've also been told some fuels will leave more of those deposits than others. I think I've had more of that black stuff running O'Donnell (pure synthetic blend) than Byron fuel types (castor plus synthetics) for example. I usually try to run around 240 to 250. I'm in the process of experimenting with some Mugen fuel because of this very "problem" and will know more after this weekend.
Had better luck running the Mugen (Byron) fuel in regards to fuel deposits. Ran my J-Tec at 280 for a 40 min. main, and it's clean. It leaves a nastier residue on the pipe though than O'Donnell. I also had to lean the motor a bit more with the Mugen compared to O'Donnell. Little less hp but runs cleaner, me thinks.
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Old 05-23-2003, 02:13 PM   #4134
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kev how is the jtec working out for you?
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Old 05-23-2003, 02:29 PM   #4135
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Now I'm charging at 0.7 amp with 50 mV threshold and they are fine.
I get 750-800 mAh in them. [/B][/QUOTE]



stefan
what charger ru using?

whatr d differences of the A B C roll center?

anybody try to put shim on the bottom front bulkhead
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Old 05-23-2003, 02:36 PM   #4136
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Quote:
Originally posted by stefan
tekrsq,

I also run custom 700 mAh in mine with didital servos and never ran out of power during a race.

I think the "secret" lies in the way you charge them.

In the beginning I charged with 1-1.5 amp and had problems. My charger only put 450-500 mAh in the pack.

Now I'm charging at 0.7 amp with 50 mV threshold and they are fine.
I get 750-800 mAh in them.
I primarily use my overnight wall charger (designed for nimh cells) that charges at 150ma. I find my packs last longer like this. If I have to peak at the track, I use my Integy 16x9 at 1.2 amps & 20mV threshold (I forget who told me to use this setting). My Orion 1100mah nimh packs are fine and give me over a full weekends racing (without re-peaking). I realize they have almost 400 ma more than my 730, but I'm getting more than 3 times more run time. It just doesn't add up to me.
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Old 05-23-2003, 05:10 PM   #4137
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Quote:
Originally posted by patelladragger
kev how is the jtec working out for you?
Very nicely. It was pre run before I sent it in, so it's not radically modified- mostly crank work, etc. Runs like a clock, easy to tune, and smooth as butter. Looks like it was worth the wait. He also did a TOP TT-12 for me that I'm going to save for the Nats.

The Murnan I have runs strong, but it's a little trickier to get the needles set right. It's much more radically modded, and maybe the bored out carb is making it more sensitive. Need to work with it a bit more.
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Old 05-23-2003, 07:14 PM   #4138
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Quote:
Originally posted by sparksy
It doesnt fit in there real nice..... hits against the fuel tank pushing it out on an angle.
I reconfigured the brick pack. I took one off the side and puto it on top. (if that makes any sense) This way it will fit without pushing the tank to one side.
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Old 05-23-2003, 07:47 PM   #4139
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Default Re: gear ratios

Quote:
Originally posted by rcdubs
im upgrading radios from a hitec fm to a computerized unit is the new ko propo ex mars i (i think it is )a good beginers radio,or the futaba 3pk???or what radio will you recommend (keep in mind im just a beginer and don't know much about epa ,throttle exponential etcetcetc......_

thanks for your help
its all up to your budget. if you can afford, get a high-end radio once and for all which will last you at least 1 to 2 years of full racing action before you find it obsolete. KO propo Mars, 3PK are both good radios. the 3 PK is the hottest in the trend now.
Need not to worry about the features, once in your hand, you would know how to use them, dont forget user manual is supplied to you. If not, ask nicely on this forum and they will be happy to assist you (if you buy 3 PK - ask Manticore!)
i am still using my Airtronics M8 for almost 16 months now, i am happy with it so far.
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Old 05-23-2003, 07:53 PM   #4140
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Quote:
Originally posted by Manticore
how much run time you can get out of the mugen pack? my custom made 5 AAA 700mah cell pack gives me at least 1 hour continous run time !!
Manti,
if i tell you that i can get around 100-120min of run time from my Speedmind 750mah Nimh pack, would you believe?
But i am using Sanwa VR & VB servos, with on-board Stealth battery checker & KO failsafe.
i charge the pack at 1amp in auto mode with my Schulze Electronik charger 330-d.
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