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>> Home > Tags > crash tender

crash tender
fleet tender
knitted fenders
seaplane tender
crash tender
huntsman 46 by canabus Admiral   Posted: 2 days ago
Hi Pilot If you are using 540 can size (35-36mm brushless motor) a 3639-1100kv 800watts, 3648-1450 1600watts or a XK 3674-1900 1769 watts. All run on 100Amp ESCs, but check the maximum voltage they handle. I use car ESCs with the electric fan on top because they run cooler at slow speeds and no water plumbing required. The same with the motors no cooling. Props for these motors 37mm 2 blade or 40-45 mm 2 blade. If you go for a larger motor for a larger prop, a L5055-700kv 1600watts same ESC, but, start with a 2 blade prop about 52mm. Battery a 3-6S 5800mah or more with a C rating of 40 plus. I have used the 35mm motors in 34 to 40" boats, but, for my 46" Vosper Crash Tender I am going to the 5055. To large a prop will cause over heating of the ESC, battery and Motor. A in line amp meter(Hobbyking 9598000004-0) is the one in use. It reads the maximum amps, so for run speed amps slow speed up to maximum as a hit the throttle hard will give you maximum amps. Canabus

FIREFLOAT RTTL by jaffy012 Chief Petty Officer   Posted: 4 days ago

46" Firefloat What Motor/Battery by canabus Admiral   Posted: 5 days ago
Hi What type of props are you using(size and number of blades). I see your basic problem is under powered motors and a very heavy battery. I made the big switch over three years ago from brush to brushless motors and to Lipo batteries. With the help on the forum and club members it was a learning curve, but, I would not go back. A 5800mah Lipo battery is in the weight of 450 to 570 grams and would give you a good 1/2 hour run time. A good balance charger and safety bag are the main requirements, also maximum charging for the 5800mah battery is 5.8 Amps(same as the old Nicads). Also a low voltage battery alarm. Your 600 motors can draw up to12Amps !!! Replacement same size motors for your mounts would be 35mm brushless motors, but, you will require two ESCs with a Y connector to run on the same throttle channel. Replacement brushless motors are far more powerful e.g. a Hobbyking 3639-1100kv with a 60Amp ESC on a 4S 5800mah Lipo Battery is 800watts and with two in your boat is 1600 watts!!! Your old motor would in the 100 watt each mark !! I have the same size crash tender, but, with a single brushless motor. I have all the order numbers for the motors etc. and a setup the ESCs if your require. Canabus

RSS P71 Sovereignty by cormorant Admiral   Posted: 16 days ago
Superb! I wouldn't know where to start. One of my first boats was an Aerokits Crash Tender powered by a Frog 2.49cc diesel. The radio was single channel, one press of the button for right rudder, 2 presses left rudder, press and hold for throttle.

Motor Mount by neilmc Commander   Posted: 18 days ago
Just a quick question is this motor mount going to be any good for me to use on my 34" Crash Tender or should I be looking to get another one?

Crash Tender Shaft Tube Poistion by RNinMunich Fleet Admiral!   Posted: 2 months ago
Hope you didn't stick the boat to your fingers 😲 We're getting there 👍

46" Crash Tender from a generous man. by RNinMunich Fleet Admiral!   Posted: 2 months ago
'I'm sorry Sir but you can't do that there 'ere'! 😉

Crash Tender Shaft Tube Poistion by neilmc Commander   Posted: 2 months ago
Hi Dave - like the talc idea which will be next weekend as my old man is down for the weekend and we are out and about all over the place. May even get a chance on an evening if Mrs Mac allows operations in the house lol. Which will allow me to move on next weekend. Hi Doug - nothing lost in translation always intended to finish off with filler for cosmetics probably just my application and communication on here lol. I must admit that 5min stuff is bloody quick setting it is definitely PANIC it's going off NOW 😂😂😂

Crash Tender Shaft Tube Poistion by RNinMunich Fleet Admiral!   Posted: 2 months ago
Hi Dave, agree with the talc idea, sometimes I file a piece of busted terracotta flower pot to powder and mix that with the resin. But usually to repair Gisela's busted garden ornaments not for boat models, but no reason why not😉 But then that's why I suggested the thicker two part glue not the liquid resin for this 'fix'. Re hardeners: as far as I know all are peroxide based but the concentration is different for the various 'speed' glues. Frankly I would have thought that the faster mix on the inside would have accelerated the outer mix, at least at the interface between the two! BTW: It was never suggested to use the epoxy as filler! The resin was just to soak and harden the balsa wedges and hold everything in place. I'm sure I wrote to the effect; when fully cured THEN use filler on the outside of the hull for the cosmetics. Something lost in interpretation?? Anyway step by step Neil is reaching his goal! 👍 @ Neil; you'll need to get a shift on with the 5 min mix! 5 mins is the hard setting time, working time before it goes too stiff to move is only about 2mins!!!🤔 Cheers Doug 😎

Crash Tender Shaft Tube Poistion by Dave M Fleet Admiral!   Posted: 2 months ago
Hi neil If the resin was runny I suspect you omitted or did not mix the hardener sufficiently or the two mixes interacted with the quicker inside mix setting quicker and stopping the longer mix from setting. If you make a correct mix and cover the soft resin as suggested it should all set nicely. You could add some talc to the runny resin to thicken it up before adding the new mix. Just a thought but possibly there are different hardeners for the slow and fast cure resins. I do know different brands don't always work together. You are nearly there and will be soon ready to move onto the next stage. Dave

46" Crash Tender from a generous man. by smear56 Chief Petty Officer   Posted: 2 months ago
The idea came from an article in Model Boats in january 2004, "areokits et al" part of it is a restoration of a crash tender retaining the shell of the IC engine. Steve.

Crash Tender Shaft Tube Poistion by neilmc Commander   Posted: 2 months ago
Hi Doug - you're spot on as always it was two different batches. The inside was a 5 minute working and the outside a 30 minute working type epoxy. Thinking was longer on the outside to make sure all holes were filled which has worked sort of. HI Dave - the day did it was lovely and warm so thought I'd be on a winner. I've tried a hair dryer on medium heat but the epoxy goes runny 😣😣. I think I'm going for the removal option a bit of 5 min type epoxy and then finish off with filler. There was still some space filler on the first attempt at epoxy but there'll be more this time. Thanks for advice again I will get this right 🤣🤣

46" Crash Tender from a generous man. by AllenA Admiral   Posted: 2 months ago
Thanks Steve, Great idea. It will be fun when some people say 'You can't sail that here!'. Allen

46" Crash Tender from a generous man. by smear56 Chief Petty Officer   Posted: 2 months ago
The Crash tender IC engine could be modified, to have a electric motor attached and driving through it to preserve the look of the innards.Steve.

Crash Tender Shaft Tube Poistion by Dave M Fleet Admiral!   Posted: 2 months ago
Hi neil Mixture and temp are all important. You could try gentle heat from a hairdryer to harden the resin. Adding extra hardener to the mix is not advisable as it can lead to unpredictable results. Epoxy is not ideal as a filler but you can make it more suitable by adding microballoons to the mix. This will result in a very hard finish which you can sand to shape. Personally I use car body filler when fixing in prop shafts / rudder tubes etc as this can be easily faired into the hull contour and will easily take paint. I have successfully used this over epoxy joints. Whatever you use you need to make sure the work environment is not too cold. The temperatures have dropped considerably over the last few weeks so you may need to provide a warm environment to assist the curing process. Dave