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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 5:39 AM   
Ron Olson



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Status: offline 		Yeah, I love saying that I run a lousy 65% around the car and truck guys when they're running 30% like it's a big deal. I've offered to pump some into their tanks before but they were worried about their engines. We'd run 45% in my sons nitro truck all the time.

Thrust washers were used in the old days on solid shaft boats more to reduce the friction between the drive dog and strut.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 5:53 AM   
TwistedLiquid



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Status: offline 		New rudders...turtles I am sure are very damaging, but we got logs...destructive....speaking of rudders and turn fins...heres the new one on one of our Vegas....Break Away...screw turtles and logs....we will have a video tomarrow on her running...shocking

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 2:37 PM   
piper_chuck



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quote:

ORIGINAL: TwistedLiquid

The reason why the McCoy 9 is being mention to him is because he is going to be burning hotter fuel....I have no idea why hobby shops even sell 20%....to save on motor issues I guess, but we burn 50%...and 65%. Why because Nitro motors .....like Nitro....

And the MC-9 will be fine for higher nitro. The reason for mentioning the warmer MC-59 plug is that higher nitro fuel is not needed for all applications.

Hobby shops sell 20%, ,and even 5% or 10% for several reasons. First, not all motors will even work with higher percentages of nitro. It's a matter of timing, compression ratios, etc. Running lower nitro will allow the engine to last much longer, will be easier to tune, and fuel costs will be WAY less. While higher nitro is necessary if a person is jonesing other racers, someone just running a boat for fun in a neighborhood pond may be perfectly happy with lower nitro. So, while an MC-9 will be good for a person running 50%, since many other people read this thread, it's useful to provide additional information to help them choose the right plug.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 2:38 PM   
piper_chuck



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quote:

ORIGINAL: Ron Olson
Thrust washers were used in the old days on solid shaft boats more to reduce the friction between the drive dog and strut.

And don't forget square drive shafts.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 3:17 PM   
TwistedLiquid



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Status: offline 		5% were do you get that...I want to go slower....with this heat maybe we should use it to keep her cool...

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 6:02 PM   
piper_chuck



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ORIGINAL: TwistedLiquid

5% were do you get that...I want to go slower....with this heat maybe we should use it to keep her cool...

I wasn't saying don't use an MC-9 or to use 5%. The 5% was in response to your statement "I have no idea why hobby shops even sell 20%". Perhaps you've forgotten that hobby shops have customers who do things other than race boats. You might also not realize that many people don't want to spend the $ for 50% or higher fuel. The speed difference between 30% and 50% is actually not that great and there are many other things that can be done to a boat that will yield more speed.

People read these threads to learn. Many of them may not even have a Miss Vegas, but just read along to pick up new information. I participate in these forums because I learn interesting things and because I have experience I can pass along to others.

Since this thread is read by many people, it's important to provide information for ALL of them, not just one specific question. It's also important to encourage and respect alternative viewpoints and not get ruffled feathers, or sarcastic, when someone provides a different perspective or different information. Please try to keep this in mind when people provide information that doesn't necessarily match the way YOU choose to enjoy the hobby.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/23/2006 6:20 PM   
toyotatruckin



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Status: offline 		Ok, Ok, both of you, yes all nitro fuel has its place lower is easier to tune and cheaper higher is a little more and harder to tune!
I have seen both high and low shell an engine and both run extreamly well. We (****)have found that in our case 30% and above works great and when running with other boats you will want to go higher to get the edge, if your running solo there isnt much sense in spending the cash and tuning effort for the higher nitr,o the couple mph wont be worth it! This is my experiance and may be different from others.
I might also add stick with what you can get at your LHS as it is not worth spending 40 or 50 bucks a gall. for 10% or 15% extra nitro!

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 2:40 AM   
t munn


 

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Status: offline 		Guys,

Our two vegas's are running well but we are still burning out couplers and zip ties.

What ere you guys using to couple the header and pipe and does tower have them.

Are the couplers and ties warrantied.I am on my third.

Terry

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:01 AM   
Grimracer


 

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Try a prather coupler..... http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDR52&P=0

I have one.. its thicker.. it seems to last alot longer.

Grimracer

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:15 AM   
BUDMAN27



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Status: offline 		Will that Grim 15/18 turn fin work on a Miss Elam ?

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:23 AM   
Grimracer


 

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:23 AM   
Bruce Frost


 

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Status: offline 		Got my boat back together and ran it today for the first time. Had two other Miss Vegas' out with me. The boats ran great. We did have one guy lock his motor up but he took it very well. Now I just need to dial mine in to let it fly. One of the guys fouled a plug and I gave him an O'Donnell purple plug (he was running 30% nitro) and his boat woke up. It ran so much better you could see the difference. My wife shot some video of us running and if it turned out good I'll try to figure out how to get up downloaded.


If you have a beef with someone else's post and what they said, don't drag the rest of us into it. Call them or PM them. We don't want to read your childish banter. We want to make our Miss Vegas go fast just as the subject reads.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:59 AM   
BUDMAN27



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Status: offline 		Thanks Grimracer. What is the best way to get my hands on one ?

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 5:25 AM   
Jerry Dunlap


 

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 5:50 AM   
Kelly Miller


 

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Status: offline 		don't mean to retouch info but have you looked at your water flow at top speed? two things come to mind, if your strut is set too low i think the back of the boat will lift too much and pull the rudder water pick up too high out of the water. i had a cooling problem the first weekend i ran my new VEGAS, i intentionally left everything as it came out of the box . I let my son Sam run several tanks through and noticed on a consistent basis that at top speed the water flow through the engine would barely spit and the residual heat under the hood was very high. after the very first run I imediatly cut out the rear of the cowling and removed the foam in the rear of the cowl, the small portion left in the very top is plenty to float the cowl should it come loose (have not completely tested that yet) this really seemed to help pipe heat a lot. before this weekend running I changed a lot. first I got on this forum and read through much of the different set-ups and noticed that my strut was set very deep in the water. I raised this to 1 inch from the bottom of the boat to the bottom of the strut, i noticed that this made the propshaft a bit above the pick-up in the rudder, i decided to start ny running there. some of the guys at the lake today were running a new rudder that had the water pickup drilled much lower in the water and reguardless of strut depth seemed to have good water flow. i also wanted to be able to bring the rudder front edge foward more to perhaps experiment with tucking the rudder under some, thought this might help also with the left turn flips. i had to remove some material from the top of the front edge to allow me to push the front edge foward. How the day ended up, after loosing my freshly balanced two blade y535, double check those prop nuts, i had a y435 three blade I had worked over just before going out. pushed the strut up as far I could and gave it about 1-2 degrees of POSITIVE strut angle (am going to cut out the slot in the strut to get more up adjustment) i had tried someones three blade the first weekend and could not get the motor on the pipe but i knew i had the strut to deep. dont know exactly how effective it was but i adjusted the back wing back edge down to try and lift the back of the boat a bit. I have gotten completely beyond the point i was trying to make, saw solid cooling stream at high speed no problem, i believe air flow, strut depth are critical to keeping the pipe cool enough not to burn up a coupler,I have never burned one up not even close to after about a gallon of fuel. boat ran GREAT today. very fast. saw some rudders I will probably switch to that have a deeper water pickup more polished and a bit narrower. modified turn fin and got rid of a lot of the left turn flip. Have had a great time with this boat. My son (Sam, he is ten years old) said he is really ready now to show Jerry how it is done.

Hope it helps

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 5:57 AM   
Ron Olson



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Status: offline 		Kelly, welcome to the site. I watched the video of Sam driving his boat and for a first-timer, the kid is getting it down already. We old geezers had better watch out for this him! He's better than a lot of people that I've seen racing, a very smooth driver.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 6:18 AM   
Jerry Dunlap


 

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Good info, Kelly.

JD
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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 6:59 AM   
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Status: offline 		....Geez what a day....Yup I will say it..Sam beat me fair and square today....My Vegas was on sick leave today....Matter of fact almost lost the Vegas to a T-Bone in the corner with Sam, problem was we had dead boat in corner..he went to miss and so did I...but we ended up crossing path at full speed...Would have been bad if we would have hit. Then we hit corner two and Sam leaps over my roostertail...I swore he jumped me, actually he did, just used my roostertail to get over me...what a pass it was....Vegas's seem to be thick at the pond today...Hard to beat anyone when they all have you gear on there boats...LoL...

Sam I have to say is one of the coolest kids on the block...he comes over to my table today after he smoked me on a new prop...he says James whats wrong...usaully you run faster then this...I told him I got a prop issue, but I am fixing it...he said to me...I know you got prop problems, thats why I beat you..so get it fixed so we can race again...LOL!!!!!!!!! What a champ and Jerry dont think he will let you off lightly...Sam is a very aggressive driver like his dad...Look like a combination of me and Kelly got the 435 jammin...wow it is eating 535 to death...I knew it would we just need a better cut...

Kelly has never been so right on the water pick up not working on top speed...said it a month ago...one of the reason we made a rudder for the Vegas. heat is a serious issue on the Vegas, but ready this forum will cure that. Also I am so glad I did not see all the Vegas's up side down today...the Twisted Liquid turn fin has eliminated all fly outs...and made the speed on the Vegas in the turns..deadly. On our strut we have cut the slot and moved the strut to right under the boat...leaving a 1/4 between prop top and bottom of boat...and a slight positive angle...unlike Kelly working with the fin..we are not working with the tail fin...we plan to remove it...this week on our top Vegas...All I can say is it is nice to have some super strong Vegas boat to run with....

GO VEGAS!!!!!!!



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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 7:21 AM   
TwistedLiquid



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Status: offline 		may i suggest that you should not be burning exhuast couplers....i had same issue, found there was no water or not enuff on full speed...this is causing you to have server heat...or you are to lean on fuel setting. you can get a stronger coupler and ignore the heat issue..but i am sure the life of your motor will be shorten doing this...heat is nice dont get me wrong, but to much will kill your vegas engine. Seen afew come back with black glow plug and smoked...coupler in floor board..melted.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 10:50 AM   
BUDMAN27



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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 10:54 AM   
piper_chuck



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Status: offline 		Great info Kelly, welcome to RCU!

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 3:50 PM   
t munn


 

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Status: offline 		How much water do you guys have in your boats after a one tank run.

I usually have a fair bit and my buddy who is running with no plug but just a peice of loose tape over the rubber hole has none.

We figure the tape is acting like a one way check valve.Which brings me to this Question.

Would an Auto Bailer work in place of the rubber plug...

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 4:01 PM   
Bruce Frost


 

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Status: offline 		When the three of us ran yesterday and after each tank we had a bit of water to pour out of the back. I am open to any suggestions on how to eliminate this if anyone can.

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 4:03 PM   
Larcor69



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Status: offline 		I just put mine in the water yesterday, after reading through these post, I did most all I could to the boat prior to running it, after the break in I leaned her , it does go compaired to a stock proboat llumar ,bud. but I found it very unforgiving for a left turn correction I had my trimed down turn fin in every possible place to help this I need the upgraded one for sure, is there an even better one than the grimracer one?? Also I ground the bottom of the strut flat to help with lift, Wow that strut is heavy, anyone make a aluminum one that will be a bolt on ?? Also I feel the push rod to be way to flimsy, i am going to put a larger one on the boat its very hard to trim the steering I feel flex to be the culprit, I had no issues with the fuel tank yet, but next trip to hobby shop will get a clunk tank with a secondary pickup tank, should never have a fuel problem that way. other than that wonderful kick butt boat!!

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RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast! - 7/24/2006 4:08 PM   
Larcor69



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Status: offline 		if you where to be doing heat racing I would suggest running tape around the canopys joint, an auto bailer in the lower left side of the transom would also work!!

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