what size trolling motor should i go for... 30lbs to 55lbs thrust?  1980's coleman crawdad approx 11-12 feet
549008
I'd recommend a 36 or higher.  Keep in mind at the top speed setting the battery life of an average deep cycle battery will only be about 2 hours.  You might get a little more time out of top-of-the-line deep cycle batteries (like the Batteries Plus Optima).  I'd suggest getting two batteries (make sure they're deep cycle batteries, regular car batteries will drain much, much faster) and hooking them in parallel.  This will double the time you can spend on the water.
342186
You will be ok with 40:1...in fact you're probably ok with 50:1 as todays oil and gas are far superior to 1975's. I used to run my 1963 Johnson 18hp at 50:1 for years without a problem...start with 40:1 and if you foul then clean your plugs and go a little leaner. Also, I recommend either penzoil or merc oil but make sure it says tcw on the label. good luck!
1056081
On the Mississippi I use 0000 stainless steel hooks, large brim and shad... at least hand sized or larger or chicken thighs.... I use to use 65lbs test but now I use Army "550" cord.  For wieghts I use 4 to 6 oz pear wieghts depending on the water level and current.... tie it off to a good sized limb..... you'll need it.  50lbs cats are common there.\n\nCabelas stocks most of the stuff you need. Or you can try bait shop along Old Man River
759382
Hi. Not to discourage you but the shape and sealing of a Wankel rotary engine are a bear! Good idea though. Power to weight is good and an R/C does not have to meet emissions. It is possible : http://www.berkeley.edu/news/berkeleyan/2001/04/10_cmbus.html
852521
You need to expand your question.  What type(s) of engines?  Exactly what cutoff time are you taling about?
157860
good carb  probly an 800cfm  the two screws in the front / bottem of the carb with springs. work slowly and at idial speed in 1/4 turns or 1/2 turns or one full turn.\n\nturn one screew in (tight) a 1/4 turn listen to the motor go another 1/4 turn lisen for a change do not ever rev the motor....wait be patient.... go another 1/4 never loose track of your starting point  whitch is 3/4 turn now\n\nwhen you hear a change in idial losen it a 1/4 wait some more\n\nnow do the other screew the same. I\n\nf the factory lock glue is still on the screews dont touch them\n\nand this will not save you gas
520009
Another rule of thumb is to assume 100% load. \n\nNot knowing what kind of "electric motor calculations" you are going to make it is difficult to say what load factor you should use.
669858
Electric trolling motors have come a long way.  With the new style batteries, you can fish for most of a day without loosing power.  I'm a big fan and think they are worth every penny (I used to run a trolling plate, this is MUCH better!).
188295
2 inch is all you ever need unless you get a toy trailer -everyone I know with a pickup has always used 2 inch
958341
You'll get 1000 different answers to this question. I stick with 3 baits year round. My #1 is the hank parker classic spinnerbait 3/8 oz chart/white with the colorado/indiana blades,#2 is the electric grape 7" power worm and #3 is the 6" black/blue tail power lizard.These are the only lures i ever take with me and 9 out of 10 times i outfish every other guy on the lake.Good Luck
81119
Go tall it not only gives you more low end torque but adds horses in the entire power band. Not to mention if you get one thats ported it helps atomize the air/fuel mixture giving you better efficiency and power.
1161524
the easiest way is to find a trailer dealer that does custom work, they can probably do it cheaper than you can unless you already have everything on hand.  A friend of mine just had one built for around 12k or 15k, all electric, she's using it as a roach coach in the panhandle of tx i think
554878
look at grainger.com for a dual action air cylinder, (probably 1/2" diameter x 6" stroke), also look for a manual control valve.\nadd an air compressor and it's almost built for you.\n\nmake sure to add some guards as the air cylinder will deliver at least 500 lbs force
1122027
Minn Kota has got to be the best as far as for pound for pound, I know the older moto guides are a pain to operate, the newer ones look about the same with a little power button on the right hand side of the foot pedal, the minn kota has about and inch and a half round nob to step on and is really dependable, most guys that have motor guides carry a spare with them. I have an 18 foot ranger and a maxx74 on it and don't have any problems with the wind, I did put a 40 all-terrain on it for a bit due to the fact the old trolling motor that came on it finally went bad, that was an old johnson/evinrude. As soon as I got the money for the maxx74 I purchased one and absoultely love it, no more getting blown down a lake. some times you can find a deal on ebay on them or bass pro, cabella's has a bargin cave and you may get a great deal their online also. Minn kota makes saltwater motors also. good luck
603284
Depends on the age of the motor.  You better check with Johnson, They have been making them leaner through the years.  It also depends on the oil you are using, they have different specs.  But if you gotta have an answer right now, you're probably safe using 40:1.
505914
westinghouse, General Electric,are the best motors to have,if you're replacing a motor take your old one to a distributor to match it up shaft and coupling.will it be a ran at intervals or 24 hours? be sure to check the amps to make sure it doesn't overseed what you're repacing.use the yellow pages in your phone book to locate a dealer near you...you can buy a cheaper motor like an appco but it won't give you the reliable service like Westinghouse or Ge brand make sure you buy one that's designed for your application and if it's going to be an inside motor or outside motor get a sealed bearing motor if you have a choice don't use a indoor motor outside wetness could cut the life of it short.Hoped this helped you some....
97465
Actually with a 500 lb. boat and a muddy seabottom a small mushroom anchor will hold you nicely under reasonable conditions.  The problem is when you need your anchor the most it will not be in reasonable condtions.  In my opinion the least discussed function of an anchor is as a safety device.  In the boat you discribe you will not be relying on the anchor to hold you fast while you sleep through the night.  But it may save your life some day by keeping you from going over a low head dam or ending up in the surf on a rocky shore. So you are correct to be concerned about what type on anchor to use on even a small boat.\n\nMy thoughts are these.  When the going gets tough you don't want to be relying a a mushroom or similar inferior type anchor.  But, also, on a boat this size space is at a premium.  A claw anchor or a plow will take up alot of room.  What you really what is a danforth type anchor.  They fold flat and perform very well for there weight.  You certainly dont need a 20-30 LB danforth as the guy above said.  That anchor would be capable of holding a 40' boat.  A 4 or 5 lb. danforth anchor should be adequate for you boat.  The next thing you need is a 4' to 6' lenght of chain to attach to the anchor.  What the chain does is cause the "pull" on the anchor to be more horizontal making the flukes dig in and hold.  You will want to attach a 100-150' length of three strand nylon rode to that chain and you are set.  The more rode you let out the better it will hold.  West Marine (westmarine.com)has some helpful advice and a wide selection of anchors with ratings.  Even if you dont want to buy from them they have good information.\n\nFair winds and following seas buddy.