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RE: AQUACRAFT'S NEW MISS VEGAS U-18
[quote]ORIGINAL: bryston Hi, Am looking to buy a new mvd , want to use OS 18 cv rmx, will it fit ? Do I have to modify anything? Can I use the pull start? Thanks [/quote] The OS 18 CVR MX will drop right into the motor mount. The pull start should work fine. Personally, I prefer using a starting belt and my electric starter. JD
Posted on: 5/17/2013 7:48 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11514824
RE: Parts from a 3.5 K/B OB??? help identify pls
That is an adjustable motor mount that also raises the the prop thrust angle when the boat is turned. The idea was to provide positive prop thrust angle in a corner to keep a tunnel boat from hooking out. The part that is missing is the control arm bracket with a metal dowel sticking forward to rest against the brass angle shims. Rod Geraghty came up with front recovery pads("stumble blocks") glued to the inside front of the tunnel floor that helped keep a model tunnel boat from hooking in a corner. JD
Posted on: 9/3/2012 6:26 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11216279
RE: Anyone know what this is?
It looks like a Dumas DragN' Fli 20 converted to an outboard. JD
Posted on: 8/22/2012 1:58 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11202447
RE: wtb K&B 7.5 outboard connecting rod
Try calling Gary Preusse at G&M Models in Oakbrook Terrace, IL - 630-279-2451 JD
Posted on: 8/14/2012 1:40 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11193395
RE: Look at this thing
I had one of those probably 25 years ago. It works, not very fast, but it works. JD
Posted on: 7/29/2012 4:12 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11173716
RE: Problems with O.S. outboard... need help!
I would recommend the Octura M-440 or the Grim Racer 40X53. I run the center line of the prop 1/4" - 5/16" above the bottom of the sponsons on most of my 20 tunnels. JD
Posted on: 7/3/2012 8:49 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11142067
RE: Problems with O.S. outboard... need help!
It sounds like you might be trying to run the engine too lean. Open the needle-valve a whole turn to allow more fuel to the engine. You might want to consider investing in a small inflatable raft because boats quitting while out on the lake happens fairly often. JD
Posted on: 6/29/2012 6:22 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11136304
RE: 7.5 outboard lower on 11cc
[quote]ORIGINAL: oldbugs  Will a K&B 7.5 lower fit on a K&B 11cc upper? I'm trying to find a 11cc lower but I can only find (not many at that) are 7.5 lowers. Thanks. [/quote] The exhaust port in the lower unit doesn't match the 11cc exhaust outlet. The 7.5 lower unit is tapped so the 7.5 can be bolted to the lower unit. The mounting holes on the 11 cc lower unit are drilled to allow 6-32 screws to screw into the 11cc case. The short answer, "No, not without reworking a 7.5 lower unit. JD
Posted on: 6/27/2012 7:50 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11133731
RE: Building GP1
You can try starting the engine with the glow plug loosened slightly to reduce compression. The engine will start with the glow plug loose and then tighten the plug once the engine is started. JD
Posted on: 6/12/2012 9:22 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11115599
RE: Flexshaft Woes!
There's two issues here: 1. Breaking the cable, 2. Loosing stub shaft and prop. You didn't state what size OB you were running. Looking at the photos, it looks like a 7.5 cable. Cable will break. I've stripped the threads for the stub shaft in K&B lower units making it impossible to tighten the stub shaft. As you discover, a loose stub shaft can come completely out of the lower unit. JD
Posted on: 6/3/2012 11:55 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11104865
RE: Help me identify it.
[quote]ORIGINAL: Ron Olson It's a MRP (Model Racing Products) Miss Bud from the mid-to-late 90's. Most were electric powered with twin motors to a gearbox and dual 6- or 7-cell Ni-Cad packs. In their nitro boats, they used ASP engines, around a .16 size. MRP at that time was the only RC boat company that I know of that was licensed to use any Anheuser-Busch logos as they paid a royalty for its use. The royalties went to charities of their choice, usually something for kids. OK, maybe too much info but background on it. [/quote] Good ID, Ron. I saw the post and just drew a blank. Back in the day, MRP sold a lot of the EP Buds. Unfortunately, they probably discouraged more potential model boaters than any model ever sold. The ESC failed almost immediately. Huge gains in EP model boats since this boat was released. JD
Posted on: 5/23/2012 11:53 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11091912
RE: tuned pipe
You can remove material from the front of the pipe. JD
Posted on: 4/29/2012 4:46 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11061663
RE: MVD- Basic Information
[quote]ORIGINAL: sfarner Thanks! That helps because my intuition told me that lean was counterclockwise. I'm assuming I rarely [b]need to touch the low speed needle [/b]based upon the fact that it looks difficult to get to, correct? Two other quick ones. First, does the after run get put right into that carb. hole below the high speed needle with the engine off? Second, is it OK to run this for a couple minutes at a time out of the water? Steve [/quote] Usually, the low speed needle is set correctly. However, if the engine continues to run at a high rate when the throttle is reduced to idle the low speed needle should be opened to allow more fuel at idle. JD
Posted on: 4/25/2012 4:06 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11056690
RE: MVD- Basic Information
It would seem you need to "lean down" the high speed needle valve by turning the valve to the right. JD
Posted on: 4/25/2012 8:52 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11056126
RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast!
[quote]ORIGINAL: asupervee72 the AQ site says the nitro MV deuce is 5lbs rtr so im not sure where the extra pound is coming from, thinking most of it is the batteries. [/quote] Batteries definitely add to the overall weight. JD
Posted on: 4/19/2012 2:50 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11048943
RE: AquaCraft U-18 Miss Vegas Hydro Thread_Make it Fast!
[quote]ORIGINAL: asupervee72 Ready to hit the water the post office scale said she weighed 6 lbs 1.1oz. Seems heavy huh? [/quote] That's fairly heavy for a 30" hydroplane. JD
Posted on: 4/18/2012 5:13 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11047755
RE: K&B .21 outboard tuning help
Turn the needle valve to the right for lean and left for rich. Try about 3 1/2 to 4 turns open to start. JD
Posted on: 4/12/2012 12:46 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11039232
RE: ANYONE KNOW WHAT MAKE THIS CAT IS??
It might be a MRP Cat. Seems like MRP had a cat similar to that, but that would have been like 15 years ago - or more. JD
Posted on: 4/1/2012 6:10 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11024270
RE: .45 tunnel radiobox
[quote]ORIGINAL: Blackout But, here is one for a .21 tunnnel.... http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMNF8 [/quote] That is a really good radio box. JD
Posted on: 3/27/2012 9:09 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11017973
RE: K&B 7,5 outboard motors and spares
[quote]ORIGINAL: Nitro boater Guys help needed,we/us in South Africa cannot get any spares for the above mentioned motor.That is why nitro outboard is diing down here,NOW my question how do we get spares as i belive K&B (MECOA) is still going and they dont ship to South Africa.Any help??????????? [/quote] MECOA has not made any new parts for the K&B 7.5 in years. That not any help, just what's happening. JD
Posted on: 3/15/2012 11:47 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11001306
RE: 3.5 tunnel hull plans.
You have a PM JD
Posted on: 3/8/2012 10:54 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10991617
RE: OutBoard ID what is it
[quote]ORIGINAL: thebossman hello all.i am haveing problems keeping my boats running,,is there a basic setting to set the jets to be able to start your boat..or how to set a nitro engine to just to get it started any help will be thankfull please help if you can [/quote] Can you be more specific on the engine/engines you are attempting to keep running? JD
Posted on: 3/6/2012 10:14 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10989552
RE: Garcia mod K&B 8907
I ran this setup "Back In The Day." 1. The exhaust noise is annoying. Over the current dB limits established by both IMPBA/NAMBA. 2. The exhaust throttle works well, but it's messy. 3. The pressurize fuel system delivers the same amount of fuel whether running wide open or at 1/2 speed. I once ran out of fuel during a heat race while running at 1/2 throttle. JD
Posted on: 3/5/2012 1:36 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10987700
RE: enya .19 v1 4006 marine engine
[quote]ORIGINAL: the-mad-hatta i have just got this lil engine off ebay and cant find any details about it it came with the manifold but no muffler so i will need to find one of them for it aswell for it and has anyone any idea what size boat to put it i am lost on what to do with it i just wanted a project as i have been out of model making a few years [/quote] I ran an Enya 19 in a 28" vee hull - probably around 1968/1969. JD
Posted on: 2/29/2012 12:03 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10981762
RE: tunnel hull question
[quote]ORIGINAL: bryston any thought about the os 21 xm water cooled vs V2 air cooled? thanks [/quote] The V2 air cooled is faster. JD
Posted on: 2/27/2012 8:10 AM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10978158
RE: OutBoard ID what is it
The units are stern drives, not outboard lower units. In all my 47 years of RC model boating, I've never seen one of these units actually installed on a model boat. That's not to say they wouldn't work. It would seem like there would be a limited market for the units. As much as anything, they are collector items. JD
Posted on: 2/24/2012 7:49 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10974631
RE: boat plans
[quote]ORIGINAL: flyzone13 My son ran across my K&B 3.5 outboard one day and started asking questions about the hobby. So i thought there is still enough time this winter yet to build one, can anyone out there point me in the right direction for plans. Tunnel Hull or an Outrigger, They were both fast and fun to race. [/quote] Try the Plans Service at Model Airplane News. JD
Posted on: 2/20/2012 5:38 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10968259
RE: super tigre Q18 pipe
[quote]ORIGINAL: bearsb66 Will the Q18 pipe work on the aquacraft .18? If so does it need to be cut down? [/quote] Yes it will work, no it will not need to be cut down. JD
Posted on: 1/24/2012 10:18 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10926328
RE: First boat??
As much as I love to build boats, and I've probably build at least a couple of hundred or more and have many model boat plans published in model magazines, building from plans is not all that easy. There are several challenges just to get started. 1. Cutting plywood greater than 1/32 or 1/16 is going to require a good jig saw. Not sure what I paid for my Dremel, but seems like it was more than $100. 2. You just cannot go down to your local Lowe's or Home Depot and get the plywood needed for a plan built boat. 3. Throw in clamps and a few other building tools and your investment is increasing. 4. Many folks don't have an area that would be suitable for building a wood boat. 5. Building from plans is time consuming - HJ you can definitely attest to that. JD
Posted on: 1/22/2012 10:02 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10922621
RE: 81 O.S. initial setting
[quote]ORIGINAL: James c harrell I am afraid I found out that I may have damaged my engine. I hadn't thought that running it with the top hatch off would let water get to the carb but it appears to have. I noticed the compression seemed to be less and I pulled the head. I have what appears to be specks of the liner gone from the cylynder. I put it back together and it still runs but I think I will be buying a 150 dollar piston and cylynder. That huge carb sits right on the front and I guess it sucked up some water. The hatch covers it and I sure wish I had thought about it. Oh well, as much fun as it turned out to be , a liner and piston is worth it. Lesson learnt!! [/quote] Water getting into the engine will not cause the conditions you describe. Generally, the water will stall the engine if a sufficient amount is sucked into the carb. JD
Posted on: 1/13/2012 3:05 PM by Author "Jerry Dunlap"
in the forum "Speed - RC Nitro Boats"
http://www.rcuniverse.com/forum/fb.asp?m=10907356
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