I am helping Heiko with this build, hence the questions. We are thinking 550's on gearboxes, then a stinger on the pump. Height should not be an issue as there is superstructure above the deck we can use to protect the pump motor.
Can sizes are the same, with tripples he *could* get into situations where he needs the extra pumping. At least it is not a titan motor He is going from a z-boat to a cruiser, with good care the stinger might make it to a battleship one day.
ok, got an answer from Stephen: he recommends 1.25" 3 blade with 35deg pitch but with 395s...i'd like the 550s on gear boxes. think that 4 blade 1.25" and 27 deg pitch give a nice drag. i'm pretty sure that before i buy the final props i can get some for testing .. but 1.25" in diameter it is. Lou, i sent you the shopping list... do you agree?
Stinger motor http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXJE43&P=7 bottle at strike: TANK-3 2.8 oz CO2 Tank (on/off valve) $40.00 Does this hold the same amount as the standard 3 oz bottles? The size of the bottle appears to be a little smaller, will this hold enough for a triple stern? Regulator at strike: REG-V2-1032New Variable Regulator with output reducer for 10-32 connections speed controller, wait until we have tested this one. http://www.helipal.com/quicrun-60a-dual-brushed-esc-1-8-60a-brushed.html
They are smaller than the usual 3.5oz. Might be OK depending on gas usage but it doesn't leave much room for error, I'd go with a 5oz personally
Good to know, need to be able to tweak! Then lets use: http://battlersconnection.com/html/bottles.html 5.0 oz. Bottle BTL50 $55.00 Servo More expensive, but worth it (IMHO): http://www.servocity.com/html/hs-646wp_servo.html more commonly used: http://www.ebay.com/sch/i.html?_nkw=traxxas+servo+2075 http://www.amazon.com/Traxxas-Digit...1370314275&sr=8-1&keywords=traxxas+2075+servo Servo gear servo hub gear -> Servo City -> KHN32-36-48 (or 50) http://www.servocity.com/html/48_pitch_nylon_gears___200__fa.html Rudder gear Rudder post gear -> Tower Hobbies -> LXJD65 http://www3.towerhobbies.com/cgi-bin/wti0095p?FVPROFIL=&FVSEARCH=LXJD65&search=Go Kips http://battlersconnection.com/html/valves.html KIP Solenoid with Viton Seals KIP27 Various sizes of fiberglass board: 8549K54 Electrical-grade Fiberglass (gp03), 1/8" Thick, 12" X 24" 8549K52 Electrical-grade Fiberglass (gp03), 1/16" Thick, 12" X 24" 8549K56 Electrical-grade Fiberglass (gp03), 1/4" Thick, 12" X 24" 8549K89 Electrical-grade Fiberglass (gp03), 1/32" Thick, 12" X 24" Stainless steel drive shaft from McMaster 1263K44 Miniature 316 Stainless Steel Drive Shaft, 1/8" Od, 36" Length oilite bushings from McMaster 6391K111 Sae 841 Bronze Sleeve Bearing, For 1/8" Shaft Diameter, 1/4" Od, 1/4" Length 6391K113 Sae 841 Bronze Sleeve Bearing, For 1/8" Shaft Diameter, 1/4" Od, 1/8" Length Relay for the pump: http://www.newark.com/te-connectivi...ve-relay-spdt-6vdc-40a/dp/21M4887?ost=21M4887 AUTOMOTIVE RELAY, SPDT, 6VDC, 40A Newark Part #: 21M4887 Manufacturer: TYCO ELECTRONICS / POTTER & BRUMFIELD Qty: 1 Price: $2.63 Order a few more at this price for the local club on future boats!
I see no reason to use 3-blade props. For motors, you're limited to speed 23, 550's are total overkill. I can see doing it for the pump can size if one doesn't like brushless
sounds good... some questions... and more to come... 5OZ is fine... gives reserve. is the additional weight a problem? think we were putting the traxxas servo for testing the height and it was ok so far even if very close with the height. will the HS servo also fit? what is the toothsize of the hub gear? is your's a 48DP, too? it seems to be bigger... more like a32... we ordered in our company today from mcmaster ...have to wait when we will order the next time. so i go with the shafts that i put on the list... what BEC? the normal or the pro? Stephen also said that 550s are overkill and he would recommend 395s... MTR-395... anybody experience with that motor? i'm a 550 fan regarding the gear box: what ratio is recommended? didn't know that the stinger is a traxxas 540... and has 20turns... i think i have a similar motor if not even this one already... i'll put the orders together...
whoops, you are correct on the gears Qty Description Unit Amount ------------------------------ -------------------------------------------------- 3 (RSA32-2HS-48) 48 Tooth, 32 Pitch $5.88 $17.64 Servo Gear (Hitec) * Weight: 0.01 lbs. each 3 (RSA32-2FS-48) 48 Tooth, 32 Pitch $5.88 $17.64 Servo Gear (Futaba)
