boatman's 1/72 HMS Tiger C20 build
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chris jenComment
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HI GUYS well im still tryin to sort my probs out on my tiger to begin regards that bad motor well its wasnt a bad motor as i found out after a lot of hassle someone on mayhem said release the motor mounting screws as he said sometimethe manufactuer makes them a shay to long an so i did an yes that was the trouble the mountin bolt must have been about a mm to long an it was hittin agaist the spinning armercher in the motor so fitted in new fixin bolt an the motor runs ok foeward an back an was goin to fit it back in the ship
but out of the blue the new motor has turned up by postie so ive fitted that in an it runs great so i thought ok thats that prob sorted but NO as i have been running the motors ive now found out why that universal jiont broke
an i now think there is a problem in the prop shaft as when running the motors the brass couplin that is screwed ontothe prop shaft was gettin very hot an i think thats why the U/J FAILED as it got hot an weakened the plastic U/J AN THEN THE PINS JUST PULLED THROUGH the mountings an it failed
SO why the prop shaft well it may be the bearing have broke up or the prop shaft grease has gone dry an hard in the tube an not lubicatein the prop shaft so i may have to remove said shaft an sqirt in some new grease to lubricate the shaft an stop it gettin hot as none of the othe 3 prop shaft get hot so if greasin the shaft fails then i may have to withdraw the shaft if i can an fit in a new one OH DEAR but onward an up
chrisbComment
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HI GUYS well im still tryin to sort my probs out on my tiger to begin regards that bad motor well its wasnt a bad motor as i found out after a lot of hassle someone on mayhem said release the motor mounting screws as he said sometimethe manufactuer makes them a shay to long an so i did an yes that was the trouble the mountin bolt must have been about a mm to long an it was hittin agaist the spinning armercher in the motor so fitted in new fixin bolt an the motor runs ok foeward an back an was goin to fit it back in the ship
but out of the blue the new motor has turned up by postie so ive fitted that in an it runs great so i thought ok thats that prob sorted but NO as i have been running the motors ive now found out why that universal jiont broke
an i now think there is a problem in the prop shaft as when running the motors the brass couplin that is screwed ontothe prop shaft was gettin very hot an i think thats why the U/J FAILED as it got hot an weakened the plastic U/J AN THEN THE PINS JUST PULLED THROUGH the mountings an it failed
SO why the prop shaft well it may be the bearing have broke up or the prop shaft grease has gone dry an hard in the tube an not lubicatein the prop shaft so i may have to remove said shaft an sqirt in some new grease to lubricate the shaft an stop it gettin hot as none of the othe 3 prop shaft get hot so if greasin the shaft fails then i may have to withdraw the shaft if i can an fit in a new one OH DEAR but onward an up
chrisb
Good to hear you are getting the problems identified and sorted.Comment
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chrisbComment
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ATB
ChrisbComment
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HI GUYS well today ive tried to cure this U/J HEATING UP by removein the 16" long prop shaft an regreasein the shaft an the refitted it in an ran the motor an shaft for 5 mins at half throttle an it dint get warm so fingercrossed ive made it better but will only know for sure when she sails again on sunday october the 8th
cheers all
chrisbComment
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HI GUYS
well yesterday took Tiger up for her forth sail an it was a beautifull day nice an warm but not as hot as last time an the modifications i have made to Tiger seemed to have worked very well as she was sailin great an she sailed near the lenght of the pond just great an did not blow them 40 amp fuses so great i thought she's a success but then something strange happend i noticed that when sailing ahead the outer props went into full astern while the rear props kept goin ahead an i was practically pullin my hair out now whats wrong i thought an all i can think of is one of them ESC is playin up as i first thought it might be the R/X given the ESC false signals so i fitted a new spare R/X
AN then treid her again an yes she's goin great really good propwash very powerfull an she surgerd ahead an was sailing great an i gave her some full head flank speed an she sailed again the lenght of the pond an back an pond is 600ft so 10200 ft sail an i was very pleased but then to my amazement it did the props ahead an outer props in astern AGAIN SO right today im goin to remove that ESC that works the outer motors an have all 4 motors goin through just ONE ESC an it should be able to take the power current load as its rated at 320 AMPS an also i think i need to fit in a bigger one qauter scale heavy duty big servo to work the rudder an stablilizers as she dint answer the helm properly when under ahead forword so more cost buyin one of them but i think im gettin her right its just the gremlins to get rid of as i was very pleased at how she sailed as she was faster than walkin speed an i had to run a bit to keep up with her when sailin ahead so im gettin there slowy an not givin up its just a matter of getting it all right OH DEAR an some pics of the day below in a a little while as i have to resize the pics firstly
chrisbComment
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chrisbComment
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You are not having a lot of luck with this one Chris.
How are the ESC's wired to the receiver? Are they running on each their own channel or are they paired.
Just a thought but how does she sail with just the two outermost or just the two innermost motors?Comment
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CHREERS Ian
chrisbComment
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Chris, I hope you will sort those gremlins out soon. Your efforts deserve a fully successful sail.
From what you say I argue the only out of scale detail of your Tiger is the speed (considering you had to follow her almost running, I guesstimated a 1/1 scale speed of more than 100 kn!) :nerd:Comment
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Chris, I hope you will sort those gremlins out soon. Your efforts deserve a fully successful sail.
From what you say I argue the only out of scale detail of your Tiger is the speed (considering you had to follow her almost running, I guesstimated a 1/1 scale speed of more than 100 kn!) :nerd:
cheers Andy for your thought on the subject
chrisbComment
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