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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/4/2010 3:35 AM   
Vintage Guy


 

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Has anyone seen the Venom Motocross bike yet.  Its 1/4 scale!!! 

http://www.venom-group.com/itemdesc.asp?ic=VEN-0400

I want to see it go!!

VG




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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/4/2010 3:46 AM   
microDan


 

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Status: offline 		There was a sneak peek picture of the bike elsewhere, no details were given and the scale was unknown.
It was guessed to be 1/4 scale. I wonder how many other new bikes like these will come out now that the DX450 was such a hit in the USA.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/4/2010 5:52 AM   
nano cup


 

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Status: offline 		Motarded DX 450 update,
Here's some info and pix of my supermoto SM DX 450. The fr brakes are based on the thunder tiger fr brake kit. Calipers are cut, bent and welded, the rear disc is made from a 2"  X .062 fender washer. The secret to the disc brakes working properly is floating the rotors. A mini servo works fine. The rear might be a novelty, but the front is a must. Just like on a real bike. Hope this helps.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/4/2010 6:12 AM   
microDan


 

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Status: offline 		Love the brakes, how are you keeping the GRP tire on the rear wheel?

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/4/2010 6:44 AM   
nano cup


 

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Status: offline 		A little bit of SHOE GOO goes a long way. I love the stuff.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/5/2010 7:46 AM   
nano cup


 

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Status: offline 		Hey Guys, What aftermarket motors work with the stock ESC. Tired of waiting for my Tower back orders. Feeling the need for a little speed.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/5/2010 1:29 PM   
microDan


 

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Status: offline 		Basically any sensorless motor will work. The Castle Creations 5700 & 4600 are great choices.
The only problem is you won't find another higher kv motor for the same low price as Duratrax upgrades.
I'm now running the 5700 with Mamba Max ESC. The speed improvement goes like this. What the bike use to do stock on 3s it now does on 2s.
And now on 3s it's just on another level. I'm still using the stock 13t pinion and hit 45.3mph.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/5/2010 4:16 PM   
MonsterMash15


 

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quote:

ORIGINAL: microDan

There was a sneak peek picture of the bike elsewhere, no details were given and the scale was unknown.
It was guessed to be 1/4 scale. I wonder how many other new bikes like these will come out now that the DX450 was such a hit in the USA.


Just my thoughs, but I think the scale of the bikes may become a issue in reguard to the manufactures before they may be willing to take the jump into producing another line.
The sales trends have a lot of influnce a pone which way they would go.
Of course with that said, you'd also have to look that companies are making the big bucks right now and have consistently in the past.
Those companies already may have two or three similar bikes on the drawing board, but of different scales.
Consistent sales trends are normally the drivers.
It would be nice to see more dirt bikes coming out, but they are also looking at ecomonic factors as is everyone else.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/5/2010 11:54 PM   
Vintage Guy


 

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Status: offline 		My Ice tires were an epic fail, all but two of the screws were spit out in the first ten feet.  My next set will be a new knobby tire with the points of the screws sticking out instead of the heads!!!!


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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 1:14 AM   
MonsterMash15


 

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quote:

ORIGINAL: Vintage Guy

My Ice tires were an epic fail, all but two of the screws were spit out in the first ten feet.  My next set will be a new knobby tire with the points of the screws sticking out instead of the heads!!!!


Because of you user name, I was wondering if you had ever seen the movie, "On Any Sunday". If you haven't, Hulu was showing it. About half way through the movie they show some old school motorcycle ice racing Canada.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 3:16 AM   
nano cup


 

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Status: offline 		Thanks Dan,Another thing on the rear GRP tire I think the insert holding it on.I trimed it to fit the rim real well. It's really fills out the tire. Like 5lbs in a 3lbs bag.Hey Vintage Guy I'm a Vintage M/Xer and MM15 On any Sunday my favorite movie of all time.havent been the same since HaHa.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 3:39 AM   
Vintage Guy


 

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Status: offline 		UH yeah I think Ive heard of that one, as a matter of fact,  I own it on VHS and DVD!!  My pop was a MC dealer of Hodaka, Bultaco and Kawasaki, I am a MC fanatic(more attict than fan).  I Own ALOT of motorcycyles, its an addiction.  When the Radio Shack bike came out I got really excited, I own three of them.  Ran out of time and money to futz with it and make it fast(it definetly wasnt fast out of the box).  When I got the DX 450 I was estastic!  Luckily Duratrax didnt let me down, I love the bike.

VG


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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 3:54 AM   
Pete48


 

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Again, great job on the brake system. These bikes are great, but they are a little weak on stopping power. I wasn't able to drive mine very well on our indoor track because I couldn't slow down and lay the bike down before the turns. I've started a concept brake system (see below). It needs to be cleaned up a bit and I still need to turn a metal rotor for it, however, it seems to function properly. I just don't know how effective it will be. Testing to follow!!!!

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 4:11 AM   
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Status: offline 		Here is my version of the GRP mounted on a bald rear tire. I trimmed off the sidewalls of the GRP to basically make a recap tire band.
It will be glued to the bald stock tread. This way the tire can be recapped again and the stock tire will still be removeable just like the original just held on with the side wall grip beads and no glue.




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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 6:02 AM   
nano cup


 

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Status: offline 		AWESOME you guys!!!!

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/6/2010 7:02 PM   
nano cup


 

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Status: offline 		Working on frt. brake on my offroad bike and noticed that mounting a caliper on the stock bracket is a little strange,in frt. of disc, with trailing axel set up. I think it was a last ditch efort to make it turn better. I'm playing with fork angle and the leading axel set up, I think Micro Dan mentioned eleswhere. There's a  3/8" differance on the two in trail. I'm back to stock wheelbase now with leading axel. Haven't done much testing,crappy Cal. weather???? Any way having a great time with the DX 450, I should working on my 1/1 bikes, first race of the season is end month.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/7/2010 5:24 AM   
Pete48


 

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Status: offline 		Nano - Crappy Cali weather?? Ha!!! You should come to Michigan. It's crappy ALL the time. To be honest, I don't even know why we have weather reports up here. Between September and April, it's crappy. I don't need a forecast to predict that!

Still working on my front brake. I noticed the Venom bike has brakes. Anyone know if those are functional?

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/7/2010 7:40 AM   
microDan


 

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Status: offline 		Venon say "optional front brakes"

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/8/2010 4:27 AM   
Pete48


 

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Status: offline 		OK. Got the DX450 to stop better (aside from the dirt, grass, etc... getting stuck in the caliper). Now I'm working on the steering. How are you guys getting this thing to turn better? Seems like my turn radius is 25ft!! When the gyro is cranking at high revs (no weights, no rings), the steering response is sad. Has anyone tried the "pro steering" setup? Does it help? Anyone got this thing turning better? THANKS!!

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/8/2010 4:55 AM   
microDan


 

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Status: offline 		I've been testing different linkage/dampening systems to get the high speed head shake out. Yes the turning radius can be very big, but I think most of the time it's driver error due to the gyro.
The gyro tends to make you steer the bike like a car. A car steering wheel needs to be held in the turn and then straightened to go straight. The bike needs to be steered and counter steered while making the turn. Get the bike down and then up so to speak to maintain a consistent lean. You can't let this bike fool you and steer itself, if you do you get these big wide turns.
Of course you need to slow down a bit or be on the brakes to make sharper turns. Also once the bike is down on the side guards and sliding a bit you are not steering the bike anymore.
To make a sharp turn you have to for example make a sharp left turn, initiate by turning left, as the bike goes down turn right (counter steer) and then left input again and then right input again and then either neutral steer or throttle up to get the bike to stand up out of the turn. If you are holding the wheel in a turn it will turn wide. A pulsing left and right wheel will make sharper turns.
I hope this makes sense. This is how you keep control of what the front forks are doing. The best turns are made if you don't touch the guide wires, a nano second is OK but if you hear a long scrape you lost it. Try what I described at lower speeds and then work your way up. You'll see that making sharp fast turns is allot of work and really like flying a helicopter on the ground.
Except for going straight the steering needs input and output (steering and counter steering) constantly.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/8/2010 6:05 AM   
microDan


 

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Status: offline 		The video I had from you tube that showed an on board camera view of the servo steering on a road bike is no longer up.
But here is one, it doesn't show as well, but if you watch while the bike leans you can see the forks and linkage going back and forth ever so slightly in some of the shots. The forks only move left and right in the turns and you can hear going on & off the throttle to make the sweeping turns of a road course. If you watch it a few times you'll know what to look and listen for. Hope this helps and thank you to whoever made this video.


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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/8/2010 7:50 AM   
nano cup


 

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Status: offline 		Well said Micro Dan. Pete48 try taking some steering rate out. On road I turn it all the  way down. First time out on pavment I had the rate way up and it sucked. It's easier in the dirt because you use power to help slide it around a tight conner.Use the short guide bars and trim 1" off and go from there. Lastly been racing RC cars for 25 + years now, and the bikes are a real chalenge. Seat time helps,It gets beter and  more FUN. There nothing like driving a RC car.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/8/2010 8:01 AM   
microDan


 

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Status: offline 		nano cup, thanks I did forget to mention to lower the steering rate. You absolutely need to fine tune the rate as the steering will be super sensitive otherwise.
When you use a better radio like a Futaba 3PM etc. you can dial in dual rate, EPA, expo, ATL etc, a proper radio setup really helps and is the key for success.
The DX450 is more forgiving but a real road bike really needs a "real" radio to get the bike to handle properly.

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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/9/2010 1:24 AM   
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Status: offline 		Outstanding advice! Thanks for taking the time to write that down, Microdan! I'll give this a try. I'm certain that I was on the guide bars more than a nano-second. Probably more like 30 seconds actually! As you said, I wasn't "steering" anymore......just letting the bike skid around a circle.

Regarding the response though. I noticed that after a long straight away (gyro up at full speed), it takes a LONG time for the bike to even START to lean. I take it that this is normal? Is ther anyway to increase the response? Thanks.


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RE: DuraTrax 1/5 DX450 Brushless On/Off-Road Motorcycle - 2/9/2010 1:50 AM   
microDan


 

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quote:

ORIGINAL: Pete48

Outstanding advice! Thanks for taking the time to write that down, Microdan! I'll give this a try. I'm certain that I was on the guide bars more than a nano-second. Probably more like 30 seconds actually! As you said, I wasn't ''steering'' anymore......just letting the bike skid around a circle.

Regarding the response though. I noticed that after a long straight away (gyro up at full speed), it takes a LONG time for the bike to even START to lean. I take it that this is normal? Is ther anyway to increase the response? Thanks.



A couple of things to do.
You can tighten the spring collars down, factory spec is 17mm bring them to at least 15mm or less. This makes the steering more sensitive to your input.
The more sesitive it is the less rate you need. Try to anticipate when you want to turn so you can slow down or be on the brakes a little. Just like a helicopter you really have to think ahead when driving the bike. So this is all a combination of things going on and it all comes back to basics again, the bike setup, the radio setup, and the driver steering and counter steering.
All I can say is when it all comes together and you get that bike to weave and turn fluidly on command a great feeling of success and satisfaction comes from this very challenging RC vehicle.
The road bikes without gyros are real driving machines. They handle and turn with beauty once you get the hang of it. The DX450 is so stable meaning it does not want to turn/lean because of the gyro it can be hard to get it right . The real road bikes want to fall over and the DX450 wants to stand up. The new lighter gyro will be a nice combo of stability and less gyro to make it turn easier.

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