Originally Posted by Nerobro
(Post 15072871)
Radio:
First, the steering servo arm screw boss is long enough to hit some servo bodies. It needs trimming. Do that or else your truck with have inconsistent left and right turning behavior. Now, the radios, it's key to keep your steering to "just enough" so you don't tip over. This can be difficult to set at first, as the trucks behavior changes somewhat between tiptoeing around the track, to a full speed run. Going fast means having your steering limited to 60-80% of your full steering travel. That percentage seems to change as traction comes up, or goes down during the day. This is "travel adjustment" not "dual rate" or "Expo". |
Dual rates have been a thing I've used on airplanes for years. They're used for switching between control throws to match different airspeeds, or sometimes, control regimes. Typically this ties "all the functions" on a channel together. So switching from high to low rate or rate 0-1-2 as is the case on my DX18 and 9308 changes both travel, and exponential. On more advanced radios, you can include switching in, and out mixes with other channels and some other really neat stuff.
Travel adjustment on radios with dual rate is "something separate". And is also important. End point adjustment doesn't change with the rate switches. And at least on the radios I've looked at, the adjustment we're looking for is called Travel, rather than Dual Rate. Back to the subject of tuning Euro Trucks: I considered adding dual rate setup to my Euro Trucks setup, to provide tight steering for when I end up pointing the wrong way on the track. With the steering dialed back to 70% doing a u-turn is questionable at best. |
Originally Posted by Nerobro
(Post 15072949)
Dual rates have been a thing I've used on airplanes for years. They're used for switching between control throws to match different airspeeds, or sometimes, control regimes. Typically this ties "all the functions" on a channel together. So switching from high to low rate or rate 0-1-2 as is the case on my DX18 and 9308 changes both travel, and exponential. On more advanced radios, you can include switching in, and out mixes with other channels and some other really neat stuff.
Travel adjustment on radios with dual rate is "something separate". And is also important. End point adjustment doesn't change with the rate switches. And at least on the radios I've looked at, the adjustment we're looking for is called Travel, rather than Dual Rate. Back to the subject of tuning Euro Trucks: I considered adding dual rate setup to my Euro Trucks setup, to provide tight steering for when I end up pointing the wrong way on the track. With the steering dialed back to 70% doing a u-turn is questionable at best. |
Originally Posted by dethklok151
(Post 15072795)
So far my kid has one race night on a savox 1272 and i have several with an old jr9000s both on old spektrum rx's. No brownouts or bec issues.i am planning on adding a light kit soon also.
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Originally Posted by Nerobro
(Post 15072949)
I considered adding dual rate setup to my Euro Trucks setup, to provide tight steering for when I end up pointing the wrong way on the track. With the steering dialed back to 70% doing a u-turn is questionable at best.
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I went the opposite direction with the shock than most people have and it works really well. My truck has very little bounce. I cleaned up the dampers with some sandpaper and put hudy graphite grease on them. Instead of trying to slow them down, which I think causes the bounce, I let the dampers do what they do and soak up the bumps. It's quick and easy to try if you haven't already. I think most of the speed issues people have are with their driving rather than their setups. I am also running 1 million in the front diff and lucas oil red and tacky in the rear. Front tires are glued middle of the tire to the tread. Rears get sauced, fronts do not. Truck works really good on black carpet and asphalt without the tires glued.
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TCS, says you can't glue the actual tread. :-/ So if you showed up to a Tamiya race (Or, I think, our races... not that i'm the rules enforcer here) you'd be called out on that. I think USGT/USVTA has the same sort of rule, so nobody at the track tried it.
I'm still out on weather gooping the shocks "matters". Tamiya sells a few weights of grease to put in their shocks to give them some damping, so they think its useful in some fashion. If I buy a second kit, I'll do some a-b testing on that. Are they mini length shocks? I .. might.. have spare shocks around. On asphalt, I was very happy with un-treated tires. I have a second set of tires and wheels for street use. :-) The Black CRC Carpet made things really kinda troubling. |
On asphalt, I didn’t do anything to the tires except glue them to the rims. On the rug, it’s a different story.
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Originally Posted by howardcano
(Post 15073088)
That's popular in oval racing. Most guys set up one of the programmable switches as a momentary select for a very tight turning circle to get out of trouble after a crash. The normal turning circle used for racing might be 20 feet or more, so punching in a momentary value of 3 feet comes in pretty handy.
Has any body complained about running front rims on the rear? We have had a few broken rear rims but not fronts. Offset seems the same. |
How... are you breaking rims?
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We had a great time running our trucks at the Big Chill this past weekend. Here is a video of one of the qualifiers:
https://www.facebook.com/OvergearedR...9505430084031/ |
Originally Posted by Nerobro
(Post 15074043)
How... are you breaking rims?
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Hi Guys,
I don't want to beat this "box stock" thing to death, but I haven't heard any "official" clarification on a few things: 1) Is adding weight OK? 2) Is gluing sidewalls OK? I understand that lubes, diff and shock, are open. What tech can't see, can't really be teched. All racers worthy of the term try to get their rides handling the best they can, but within the rules, and I don't want to be a cheater. |
1 Attachment(s)
Originally Posted by Laguna Bozo
(Post 15074578)
Hi Guys,
I don't want to beat this "box stock" thing to death, but I haven't heard any "official" clarification on a few things: 1) Is adding weight OK? 2) Is gluing sidewalls OK? I understand that lubes, diff and shock, are open. What tech can't see, can't really be teched. All racers worthy of the term try to get their rides handling the best they can, but within the rules, and I don't want to be a cheater. http://www.rctech.net/forum/attachme...52l17d6643.jpg |
Originally Posted by cheapskate.brok
(Post 15074604)
And that's why TITC committee has decided to let it all loose but motors are to be returned, shuffled and handed out for every heat. Check out the attachment
http://www.rctech.net/forum/attachme...52l17d6643.jpg |
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