Posts: 325
Joined: 3/9/2008 From: , KY, USA Status: offline
yea the rod in the motor is chewed up on the very end, the crankcase is pitted and the rod was rubbing.(there is a lot of metal pieces scattered throughout this motor) the rear bearing is also pretty rough!! i think i will get a new motor.. i found one for 75 bucks shipped.. i do custom powdercoating so i may powdercoat the spare head and maybe crankcase.. might also play with doing some porting on the crankcase(the old one of course).. the lube on the one way bearing sounds like a good idea!! i just didn't know if it would make the pullstart slip with the grease on it.. i will try that too.. thanks for the input guys!
Posts: 706
Joined: 11/2/2005 From: MANTECA,
CA, USA Status: offline
The pitting in the head is proof of lean running, on the new engine resist the urge to lean the mixture, my boys run 40% nitro and 18%oil with castor and start at 3 turns out and work down to maybe 2 1/2 turns after breakin.
Posts: 325
Joined: 3/9/2008 From: , KY, USA Status: offline
well when i first got the boat i was breaking the motor in and it kept overheating!!! i then discovered tht the water pickup(inside the rudder) was full of metal shavings, which is why it was overheating!! no water at all was circulating!! i would say that this was hard on the piston and sleeve to overheat that much during break-in!! i will start over with a new motor and keep check on things better..
When i first got mine, I couldn't figure out why mine was running lean and burning exhaust couplers, even 4 turns out on the screw. Finally noticed that fuel pickup in tank was all the way against bottom of tank restricting fuel flow.
Posts: 60
Joined: 10/11/2007 From: columbus, IN, USA Status: offline
I have mastered my tunnelboat, and now I own a miss vegas. After reading hundreds of pages on this thread, I have the problems others have and after trying what was suggested, it almost hooks up in the straights. But cavitates horrible in the turns. Motor is running good with 30% fuel. I have had the prop set everywhere, no luck.
Posts: 239
Joined: 8/20/2007 From: portland, OR, USA Status: offline
quote:
ORIGINAL: mb1387
I have mastered my tunnelboat, and now I own a miss vegas. After reading hundreds of pages on this thread, I have the problems others have and after trying what was suggested, it almost hooks up in the straights. But cavitates horrible in the turns. Motor is running good with 30% fuel. I have had the prop set everywhere, no luck.
what prop are you using? i always had issues with the stock prop, but once i went to the grim prop, or an octura Y535, no more problems, no matter where the strut was set at........
Hey hey hey, guys! Long time no talky. I just moved up to Michigan and remembered Ron was from here. Is there any ponds that anybody knows of that I can run my Vegas at in/near Farmington Hills?
Posts: 60
Joined: 10/11/2007 From: columbus, IN, USA Status: offline
Well as I said a few days ago my miss v came in to it, soooooo much fun. My girl friends mv came in to it last night we got to run together it was a blast. When I got mine I did notice it seemed very thin and when we got hers it is twice the hull and paint is great, but I noticed last night the hole belly pan is cracked on mine bad I called hobby ser. they where very very nice and offerd to replace it, if I would send them the boat but with the end of summer coming and having so much fun Im gona fix it myself hell I will most likly cut it up mod. it any way
Posts: 239
Joined: 8/20/2007 From: portland, OR, USA Status: offline
man o man o man, hard day out on the water saturday. i managed to break almost every boat i took out, the vegas, nitro SV 27, and my TZ powered proboat......
so, i am running an OS VZ-M .21 in the vegas now. i have got her running pretty good, can't seem to top my 49.5 mph mark, i have tried, but just can't quite get there. i took out one shim, also tried an X442 with the tongues removed, but could only muster 47.5 yesterday. so, let's see: i hit a log doing 40 plus, (doh!) and that really smoked my hull. it is really smashed up in the front, the left sponson is completely torn, hull split, not pretty!! then, i lost a conrod. it's been awhile since i have heard that awful sound of a motor stopping instantly, you just KNOW it's not good. and? i was right.
so, smashed my boat to smithereens, and blew my motor. awesome!
well, a visit to tower found me a conrod, and in an impulse buy, i found a scratch and dent vegas for cheap, as it's missing some parts. parts that i don't need anyway, with what i am doing. so, vegas 'round two' will be coming up shortly. all in a days fun right? you betcha. gonna take more than this to take me down, now i have some projects! (anyone need a beat on vegas hull? )
just wanted to share, alls good, take care peeps......
davey
ps, how do you strengthen the cross width of the vegas hull? as in sponson to sponson, like across at the nose/gas tank level of the boat? i can't remember where it is, some kind of cross stringers? any info/pics on how to do it/materials, would be greatly appreciated, as i want to strengthen the new hull. thank you!!!)
Posts: 1155
Joined: 5/9/2006 From: Lakewood, WA, USA Status: online
To strengthen the front of a MV, remove the fuel tank and run a piece of 1/2" wood dowel across the hull. Use epoxy or glass resin to hold in place. Have the dowel extend into the sponson cavity by an inch or so on each side.
Posts: 1247
Joined: 11/19/2006 From: Wichita Falls,
TX, USA Status: offline
quote:
ORIGINAL: d-lo
ps, how do you strengthen the cross width of the vegas hull? as in sponson to sponson, like across at the nose/gas tank level of the boat? i can't remember where it is, some kind of cross stringers?
Most folks I have seen, use a fiberglass or carbon fiber rod/tube across the front of the boat in front of the fuel tank. It is almost like it was meant to be there. I guess the short of it is, that most of the hulls crack down the sides of the nose piece, so this is where most folks experience their flex. A fiberglass tube across it stiffens it up. If you can't find fiberglass or carbon fiber rods/tubes anyplace, try the local sports equipment store/department and pick up some arrows. You should should even be able to find fiberglass arrows at Wal-mart for that matter.
Sean
< Message edited by Sean Bowf -- 9/21/2008 7:56:19 PM >
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