Rio 51Z that will not turn left
11-12-2011, 06:11 PM
#1
Rio 51Z that will not turn left
Ok guys here is the same old problem. I have a 51Z with a slightly mod plum 26 IE racing dry pipe and carb. When I run my three bladed prop she will not turn left with backing almost all the way out of the throttle. its not as bad with my stock two blade but the speed is almost 1o mph slower. what's the fix? dual rudder,? longer rudder? or a bunch of C4. Any suggestions on where I can find what I'm looking for? So far its been all stock stuff.
11-12-2011, 10:16 PM
#2
OK, the C-4 is tempting but a little hard to score! 
Now I've got to ask possibly the most obvious question to me, are the props sharp (and balanced)? Dull props can give you fits when trying to make lefts. What happens is that they'll give you a paddlewheel effect making the boat want to turn right even when attempting to turn the other way. The rudder is being pulled when making lefts so that eliminates bending in the pushrod which can happen when turning right. Does the boat go straight under normal circumstances?
The hull comes with both left and right turn fins so no problem there.
Most boats don't turn as well to the left as it's their nature. My mono will hop when trying lefts.
Make sure that you're getting maximum steering throw by checking the EPA's on the transmitter and/or Dual-Rate.
Now I've got to ask possibly the most obvious question to me, are the props sharp (and balanced)? Dull props can give you fits when trying to make lefts. What happens is that they'll give you a paddlewheel effect making the boat want to turn right even when attempting to turn the other way. The rudder is being pulled when making lefts so that eliminates bending in the pushrod which can happen when turning right. Does the boat go straight under normal circumstances?
The hull comes with both left and right turn fins so no problem there.
Most boats don't turn as well to the left as it's their nature. My mono will hop when trying lefts.
Make sure that you're getting maximum steering throw by checking the EPA's on the transmitter and/or Dual-Rate.
11-13-2011, 11:58 PM
#4
sounds like exactly the same problem i have with my boat, im going to try build a left turn fin into and additional rudder and see how that works
other than that the only advice i can give is a little left outside trim tab down a bit but be careful of the boat suddenly hooking
other than that the only advice i can give is a little left outside trim tab down a bit but be careful of the boat suddenly hooking
11-14-2011, 02:02 AM
#5
Remember the boat is fighting the prop rotation and most gases and nitro's use a pretty large prop compared to FE , try to stick to a right hand turning course, or just get into the habbit of racing clockwise. Apart from this a good deep rudder is your best chance
11-14-2011, 09:56 AM
#6
Here are the pictures of the back end. Does anyone know if the blade props are really faster compared to a well tuned two blade? And yes the Prop I'm running now has been balanced and sharpened. Ok well pictures will not up load so the back end is standard for the rio 51Z I have not changed anything but the prop.
Last edited by Medicman202; 11-14-2011 at 10:01 AM. Reason: pictures will not upload
11-14-2011, 10:06 AM
#7
Pix didn't come up, you need a space between the links or something....
11-14-2011, 11:43 AM
#8
I DONT KNOW MAYBE IT'S A MAC THING???? But the pics will not load however the rudder is 6" with a 5" stand off that puts it just between the hull and the prop on the right hand side.
Anyone now the trick to uploading let me know??????
Anyone now the trick to uploading let me know??????
11-14-2011, 08:41 PM
#10
Scroll down under the reply box and click on "Manage attachments". From there a box will pop up and allow you to upload pix from your computer.
Click on "Browse" to find what you want us to see, then "Upload". Wait for the shot to appear at the bottom, close the box and hit the "Submit reply" button.
For You Tube videos, click on the "You Tube" button and paste the link in between the "]["'s.
Click on "Browse" to find what you want us to see, then "Upload". Wait for the shot to appear at the bottom, close the box and hit the "Submit reply" button.
For You Tube videos, click on the "You Tube" button and paste the link in between the "]["'s.
11-15-2011, 06:38 AM
#12
I don't count the number of posting a member has. A lot of these RC forums sites are all about the same as far as posting pictures and videos go. This is only number 21 for me in here but on another site I'm coming up on 17,000. Yeah, that's a lot but I'm still learning something new every day.
Usually these Rio 51z's have bigger issues than not being able to turn to the left. Loose engine rails and bad flex cables are the big two. Mostly on this I'm thinking that it's just the nature of the beast as most RC boats aren't known for making good left turns.
Usually these Rio 51z's have bigger issues than not being able to turn to the left. Loose engine rails and bad flex cables are the big two. Mostly on this I'm thinking that it's just the nature of the beast as most RC boats aren't known for making good left turns.
11-15-2011, 10:22 AM
#13
Hmmm that's weird if you watch this Rio from this weekend it seems to do right and left just fine. New motor running super rich so not alot of speed.
PICs here or at www.jrcbd.com is going to be you best bet. Most of these guys can look at pictures and tell you what to try to fix the problem.
PICs here or at www.jrcbd.com is going to be you best bet. Most of these guys can look at pictures and tell you what to try to fix the problem.
| + YouTube Video | |
11-18-2011, 08:50 PM
#14
heres one pic that would upload
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