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RE: new guy and build
Welcome to the forum!! I am just not sure what your abbreviation f/v is for hull style. Typically we aim for COG (Center Of Gravity) for a deep Vee to be around 30% from the stern. While that does not mean that is where you need to mount the motor - considering the motor is the heaviest addition to the hull - It would be a decent guide to aim for it to be near that point. Other variables will be tank mounting location, hardware, radio box, and pipe constraints within the hull etc. Also the hull construction will also factor in (most bare hulls tend to be bow heavy) Way we balance a boat is to literally balance it (either holding it with a finger either side or a dowel or similar under the hull). Will give a rough guide.
Posted on: 5/22/2013 9:32 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11519886
RE: Magazines?
not a print magazine but it is a great resource - see the magazine link for more articles - http://www.modelgasboats.com/Magazine_Content/Boats/
Posted on: 9/18/2012 3:52 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11232796
RE: 1/6th or 1/5 scale gas Hydroplane questions!!
I have a few other images I found over the years of some large hydros (the image above among them) here - http://imageevent.com/justaddwata/morerc/otherpeoplespics/assortedgaspics go down to picture 724 and the next 12 or so pics are large hydros. May be of some help [;)]
Posted on: 9/18/2012 5:07 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11232155
RE: Brisbane Model Marine club day 9th - Ozzie Vid's
Great videos Chris!! Looks a perfect spot to let the bigger boats stretch their legs. Thanks for sharing!
Posted on: 9/14/2012 11:05 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11229024
RE: Boat Crash
Wow - thats terrible. I was there Sunday though left early (Glad we missed it) - Have some pics from the circuit races here - http://imageevent.com/justaddwata/tauntoncup2012
Posted on: 9/10/2012 5:51 PM by Author "Justaddwata"
in the forum "Off Topic Forum - Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11224367
RE: Rat Fink II Razor
someones been doing a whole lot of thinking and working!! Looking good Randy - be looking forward to updates on this one!
Posted on: 9/9/2012 12:07 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11222463
RE: Help with boat hull manufactory
Believe it is the Popeyes 50 by Aeromarine. The hatch of the 50 has a pair of scoops but I believe it used to have the 4 detents like the one you show (and same as the Popeye's 42") http://www.aeromarinerc.com/index.php?option=com_virtuemart&page=shop.browse&category_id=142&Itemid=53 Would work well with a 26cc Zen, Sikk, RCMK, etc. I believe the top of the motor will be exposed through the hatch as there is not a lot of clearance - not a big deal. Also will likely have the pipe cut through the back of the hull. If you want to fully conceal the motor and pipe you might look at the Aeromarine Conquest or avenger Pro (http://www.aeromarinerc.com/index.php?option=com_virtuemart&page=shop.browse&category_id=37&Itemid=53) or Express Craft Thunderbolt http://expresscraft.com/thunderbolt.html which will hold the same motor concealed.
Posted on: 9/5/2012 1:39 PM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11218574
RE: Roots Type Supercharger
Guys - be great to see this thread back on topic. [;)]
Posted on: 9/5/2012 4:09 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11218049
RE: beginner has some questions
Welcome to the forum!! Monos Vs Hydros. A Mono is a single hulled boat (Typically a Vee shaped hull) that is well mannered and maneuverable in all directions and most all conditions. They are easy to operate at just about any speed. Hydros are a design that tends to fly above the water with multiple points of contact. They are designed for speed and speed alone. They are designed for calm water and have limited maneuverability. Most have a turn fin mounted to one side of the boat and will have very good cornering one way only. Because of the speed (and skills needed to control and react) hydros are not typically targeted at beginners. Regarding Gas Vs Electrics. I will speak to Gas as I have only limited (and old) experience with electrics. Gas boats tend to be larger to accommodate the size of motors we typically use. Gas boats typically run 30-50mph though speeds over 100mph are capable in the hands of experts. Budget for a Gas boat will start in the $600 range for something used (in decent RTR condition) and $750 for something new. Prices go well up from there. My personal recommendation for a beginner to gas boats would be something like the Warehouse Hobbies Enforcer or similar (a thread on them here - http://www.rcuniverse.com/forum/m_9313299/tm.htm). One thing I would recommend for a beginner is a Clutch - it allows you to slow the boat down (even stop it) while the motor continues to run. Advantages of Gas boats. They are reasonably priced for large size and performance. Long run times. Parts for a gas boat are reasonably easy to replace should a repair be needed. There are also plenty of upgrade options that are also reasonably priced. Fuel is readily available and inexpensive. Disadvantages of gas - Fuel smell (however a gas alternative "White Gas" is odorless), Noise - Gas boats tend to attract unwanted attention - be sure to use a muffler. I would also strongly recommend finding some local boaters in your area who are experienced. Race clubs (NAMBA.com and IMPBA.com) will also have events around the country - may be something close to you. It is also a very good place to see (hopefully) the right way to do things. It is also a chance to meet fellow enthusiasts and learn and share the fun (plus if you want to get into racing you will probably see more of these people). Be sure to walk around and check out what they are up to. Asking questions (when appropriate - stand clear if they are preparing for an event!) is one way to learn too. RC Boating is certainly fun and reasonably safe however the water and the propeller must both be respected and used with proper care. Be sure never to boat alone. Never to swim for your boat. Have a reliable means to recover your boat and use a life preserver if going on the water. Never to operate in water shared by swimmers or other full sized boats. Certainly ask questions of us here. I am sure you will hear from others regarding Gas, Nitro, and Electrics too! Matt
Posted on: 9/4/2012 9:37 PM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11217868
RE: Roots Type Supercharger
We get (almost) free supercharging from the tuned pipe - it does not steal any power from the motor to make it work and provides considerable boost. There are plenty of supercharged 2 strokes (GM comes to mind) but the logistics of fuel management and the already mentioned loss of mixture out the exhaust would mean it would be more for show. But I am not sure there is a sound on this earth I like more than hearing a blower whining away on a boat - a mini version would be cool - even if not practical
Posted on: 9/3/2012 6:33 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11216290
RE: RCM and MHZ Z Drives
The MHZ drive should have a square input and so not need loctite. The RCM drive use Loctite 648 retaining compound for the flex cable/input gear.
Posted on: 9/2/2012 7:27 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11214368
RE: RCM and MHZ Z Drives
the RCM is a 1.16:1 ratio - same as the MHZ
Posted on: 9/1/2012 5:41 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11213889
RE: 1/5 scale 73
[quote]ORIGINAL: Podagee I'm interested. I'm making a 1994 miss bud T4 that is 72'' long 36'' wide. I'm almost done and I'm running electric brushless motor [/quote] just in case you missed it - this is a 6 year old thread you have brought back to life [;)]
Posted on: 9/1/2012 7:27 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11213461
RE: Building an electric start for Zenoah
Guys - thread is 6 years old [;)]
Posted on: 8/30/2012 11:01 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11212308
RE: Needing motor and parts
[center][color=#660000]Guys - we have a free classified section for such transactions - not the main forum [;)][/color][/center]
Posted on: 8/30/2012 10:57 PM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11212307
RE: Let you guys know about my youtube channel
Hi TheJackeRcSweden, Great to see your interest. Perhaps you might post some pictures and videos you take here. Youtube is great but the link to your page really only shows me videos you have liked (and most are videos I have already seen). Last I remember you had a build in the works - how is that coming along? Keep us in the loop Matt
Posted on: 8/30/2012 6:47 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11211409
RE: 50 cc Twin in a Twin Swashdrive Boat
Interesting idea but think you would be losing a lot of performance with the additional ducting etc. Any jet (Big and small) I have seen with twin motors has separate pumps and discharges. Additionally - think you might find more performance from an inline twin. One of the guys here did an inline twin in a boat a few years ago - he was seeing some remarkable speeds from it. http://www.rcuniverse.com/forum/fb.asp?m=9405773
Posted on: 8/25/2012 9:09 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11206101
RE: real boat still on the market page ??
report it to a moderator. I check Classifieds every couple of days but must have missed it.
Posted on: 8/24/2012 1:07 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11204710
RE: swashdrive jetboat
Looks good in Chrome!!
Posted on: 8/23/2012 10:01 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11203493
RE: Sikk kwa pipe and clutch ?
Should be able to use those mounts - will have to drill new holes in the rails for them. Also on the clutch mounts there are no rubber isolators - if the seller does not have them you will need to pick up a pair - probably $10 or so.
Posted on: 8/23/2012 10:00 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11203491
RE: Sikk kwa pipe and clutch ?
While unlikely to be a direct bolt in fit - it should be easy enough to make it work in your boat. The pipe is missing the exhaust manifold flange so pipe is not ready to bolt onto motor. Whether or not it actually works - that is a different story. Used motors always seem to have only had a few tanks of gas and are "just broken in". Early versions of this motor had issues with dechroming of the cylinder - couldnt say if this is an early version or not. (zero seller feedbacks in the last 4 1/2 years do little to reassure me it is a reputable seller) Buyer beware!
Posted on: 8/23/2012 4:12 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11203071
RE: FLORIDA lakes or ponds to race boats???
You guys do realize this thread is more than 5 years old. [;)]
Posted on: 8/22/2012 8:44 AM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11202101
RE: What have I scored?
Hull looks like a Hoover Hydro - http://www.hooverracing.com/html/winston.html Motor looks like an old 23cc Zen. Be ok for a sport boat but not an ideal choice for a hydro with the options available today. I certainly would not sink too much $$ into the motor as on its best day it could not compete with any stock gas motor available. You did well though lots of work needed!
Posted on: 8/20/2012 12:46 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11199389
RE: Whats the smallest 1/4
ABC have 62mm diameter props @ 1/4" - [link=http://www.abcprops.com/proppdf/PROPSHEET(1104).pdf]http://www.abcprops.com/proppdf/PROPSHEET(1104).pdf[/link] Propshop have 60mm diameter props with 1/4" http://www.prop-shop.co.uk/index.php?id=25§ion=store&sub_section=products&product_type=25 Additionally it is not hard to reduce the diameter or blade area of any prop out there
Posted on: 8/20/2012 12:40 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11199387
RE: Need help with water pump issue
Silicon pulse lines will tend to flex more and absorb the pulse from the motor - they will also deteriorate with the contact they have with the fuel and oil over time. Tygon as mentioned is superior. Additionally - pulse lines are recommended to be as short as possible.
Posted on: 8/18/2012 10:48 PM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11198370
RE: Help Please!
JB might work (but I would not use it) - will not be able to break the bond with heat like Loctite. FWIW - Shear strength of JB Weld is 1000 psi http://jbweld.net/products/jbweld.php/ Shear strength of 648 is 2000 psi after 15 minutes cure and 3600 psi after 24 hours.
Posted on: 8/15/2012 7:57 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11194296
RE: Help Please!
[quote]ORIGINAL: TheFridge189 Â Will J.B weld work ok? Do you think a local ace hardware will have the locite product? Thanks [/quote] Would not believe JB would hold up. The product you want is Loctite 648 retaining compound - long been my preferred product. Will work well but surfaces must be a snug fit, spotlessly clean of oil, and allowed to dry a few hours. It is a specialized product. Will be available at a bearing shop, maybe a hydraulic and/or industrial supply shop or similar. DONT JUST BUY "Loctite" - there are hundreds of variations - the only one I use is 648 retaining compound (The ones linked above may - they are retaining compounds - but I have only used 648) http://tds.loctite.com/tds5/docs/648-EN.PDF
Posted on: 8/15/2012 12:01 AM by Author "Justaddwata"
in the forum "Speed - RC Gas Boats"
http://www.rcuniverse.com/forum/fb.asp?m=11194021
RE: 1/8 gas powered hoover hydro boats
Welcome to the forum!! How long has it been since you last contacted that e-mail? I cannot say I have heard of Hoover racing though have long loved the hoover hydro. I may be mistaken but was under the impression that the original Hoover Hydro went out of production a decade ago. Blackhawk Hobbies were doing a version of it for decade or so (PI Hydro) though have since turned to thievery the past few years. Believe the PI molds are out there but dont know who is laying them up lately.
Posted on: 8/14/2012 11:54 PM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11194018
RE: RC Surfer
[quote]ORIGINAL: Jimi Findrix Justaddwatta, I will continue to post my pics and stories and try not to call people silly names. Have a laugh and go get some waves! <font size=''4''><font color=''#ff0000''>J<font color=''#ff9900''>I<font color=''#00ff00''>M<font color=''#0000ff''>I [/quote] [;)] Went to the beach a few weeks ago - you dont want to see my pics though!!
Posted on: 7/20/2012 12:08 AM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11162125
RE: RC Surfer
[center] [color=#0000CC]Was loving the direction of this thread and hope it will again continue down that path. Massiveoverkill is encouraged to reconsider future posts here if he wants to remain part of the forum. Thanks to all who kept their cool. Makes clean up easier - it is appreciated [;)][/color][/center]
Posted on: 7/19/2012 10:58 PM by Author "Justaddwata"
in the forum "RC Boats General Discussion"
http://www.rcuniverse.com/forum/fb.asp?m=11162084
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