SD Dojavi Slobodna Dalmacija
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Arbom 500 s Yamahom 20 na punom gasu postižem 14 čvorova. U deplasmanskoj plovidbi motor stoji okomito, ali kad krenem u glisiranje i pramac se podigne, motor stoji koso. Kako nema električni trim, zanima me je li u startu bolje nagnuti motor u drugu stranu da bi u glisiranju stajao okomito? Molio bih i par praktičnih savjeta o pravilnom trimanju.

Marinko B., Pula

Baza za trim izvanbrodskog motora oslanja se na činjenicu da os propelera teži biti paralelna s morskom površinom, a najniža pozicija trima određuje se već pri ugradnji motora na krmeno zrcalo.

Motor se postavi tako da dok brodica miruje, bude okomit na površinu mora, odnosno anulira se eventualna negativna nakrivljenost krmenog zrcala, a zatim se graničnik podigne za još jednu rupu.

Dodavanjem gasa u plovidbi krma će uroniti i os propelera bit će u povoljnijem položaju. Dublji trim, s više spuštenim motorom, podiže krmu i uranja pramac, a više podignut motor uranja krmu i podiže pramac.

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image

Nagib motora izravno utječe na položaj pramca

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Fino podešavanje

Motori veće snage imaju mogućnost finog podešavanja kuta u plovidbi i tako ga se jednostavno može prilagoditi za bilo koji režim rada. Dok plovilo ne zaglisira, motor je spušten i zatim se postupno podiže dok se ne postavi u optimalan položaj.

Naravno, sve to ovisi i o stanju mora, dužini i kutu vala, ponašanju plovila na takvom valu, ali i kormilarevoj navici upravljanja plovilom.

Kormilarima koji preferiraju tvrđi timun i u oštrom okretu pri većim brzinama žele imati osjećaj sigurnijeg manevra, trim je uglavnom nešto dublji negoli je to optimalno.

Izvanbrodski motori manje snage takvu mogućnost podešavanja kuta motora nemaju. Njima se optimalan kut podešava prije negoli se upute i prilagodi potrebama plovidbe.

S obje strane čeljusti motora, dijelu kojim je motor pričvršćen za nosač ili krmeno zrcalo, predviđene su rupe za graničnik kojim se regulira željeni kut. Brodica s dubljim trimom ima veću snagu i manju brzinu, a podizanjem trima snaga se smanjuje i brzina raste.

Potrošnja goriva

U odnosu na uobičajeni trim, brodici nakrcanoj teretom ili koja će na bilo koji način biti dodatno opterećena trim je potrebno spustiti, a rasterećena i laganija može razviti veću brzinu, pa joj se i graničnik kuta motora može podignuti.

Dobro je znati da loš trim motora ne bi trebao značajnije štetiti motoru. Hlađenje motora je normalno, a kako opterećenje nije optimalno, temperatura se može malo podignuti, ali ništa alarmantno. Osim u ekstremnim slučajevima, jedina realna posljedica slabo trimane noge je veća potrošnja goriva, nekada i do petnaestak posto.

Ipak, na manjim brodicama nemogućnost podešavanja kuta motora u plovidbi može se korigirati promjenom rasporeda težine u brodici, pa ako možete, prvo pokušajte težinu s krme prebaciti naprijed, a ako to nije dovoljno, tada podignite trim.

Pitanja šaljite na more@slobodnadalmacija.hr.

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Čitajte sve o jedrenju, đitama po Jadranu, brodovima na struju, brodskim motorima i popravku broda. Učimo vas kako održavati brod. 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Pokušajte s boljim rasporedom težine

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Nagib motora izravno utječe na položaj pramca

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Arbom 500 s Yamahom 20 na punom gasu postižem 14 čvorova. U deplasmanskoj plovidbi motor stoji okomito, ali kad krenem u glisiranje i pramac se podigne, motor stoji koso. Kako nema električni trim, zanima me je li u startu bolje nagnuti motor u drugu stranu da bi u glisiranju stajao okomito? Molio bih i par praktičnih savjeta o pravilnom trimanju.

Marinko B., Pula

Baza za trim izvanbrodskog motora oslanja se na činjenicu da os propelera teži biti paralelna s morskom površinom, a najniža pozicija trima određuje se već pri ugradnji motora na krmeno zrcalo.

Motor se postavi tako da dok brodica miruje, bude okomit na površinu mora, odnosno anulira se eventualna negativna nakrivljenost krmenog zrcala, a zatim se graničnik podigne za još jednu rupu.

Dodavanjem gasa u plovidbi krma će uroniti i os propelera bit će u povoljnijem položaju. Dublji trim, s više spuštenim motorom, podiže krmu i uranja pramac, a više podignut motor uranja krmu i podiže pramac.

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Nagib motora izravno utječe na položaj pramca

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Fino podešavanje

Motori veće snage imaju mogućnost finog podešavanja kuta u plovidbi i tako ga se jednostavno može prilagoditi za bilo koji režim rada. Dok plovilo ne zaglisira, motor je spušten i zatim se postupno podiže dok se ne postavi u optimalan položaj.

Naravno, sve to ovisi i o stanju mora, dužini i kutu vala, ponašanju plovila na takvom valu, ali i kormilarevoj navici upravljanja plovilom.

Kormilarima koji preferiraju tvrđi timun i u oštrom okretu pri većim brzinama žele imati osjećaj sigurnijeg manevra, trim je uglavnom nešto dublji negoli je to optimalno.

Izvanbrodski motori manje snage takvu mogućnost podešavanja kuta motora nemaju. Njima se optimalan kut podešava prije negoli se upute i prilagodi potrebama plovidbe.

S obje strane čeljusti motora, dijelu kojim je motor pričvršćen za nosač ili krmeno zrcalo, predviđene su rupe za graničnik kojim se regulira željeni kut. Brodica s dubljim trimom ima veću snagu i manju brzinu, a podizanjem trima snaga se smanjuje i brzina raste.

Potrošnja goriva

U odnosu na uobičajeni trim, brodici nakrcanoj teretom ili koja će na bilo koji način biti dodatno opterećena trim je potrebno spustiti, a rasterećena i laganija može razviti veću brzinu, pa joj se i graničnik kuta motora može podignuti.

Dobro je znati da loš trim motora ne bi trebao značajnije štetiti motoru. Hlađenje motora je normalno, a kako opterećenje nije optimalno, temperatura se može malo podignuti, ali ništa alarmantno. Osim u ekstremnim slučajevima, jedina realna posljedica slabo trimane noge je veća potrošnja goriva, nekada i do petnaestak posto.

Ipak, na manjim brodicama nemogućnost podešavanja kuta motora u plovidbi može se korigirati promjenom rasporeda težine u brodici, pa ako možete, prvo pokušajte težinu s krme prebaciti naprijed, a ako to nije dovoljno, tada podignite trim.

Pitanja šaljite na more@slobodnadalmacija.hr.

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Arhiva/Otvoreno more
Arhiva/Otvoreno more

Pokušajte s boljim rasporedom težine

Nagib motora izravno utječe na položaj pramca
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StoryEditorOCM
Nautika

kut u plovidbiSavjetujemo kako pravilno trimati izvanbrodski motor: anulirajte kosinu krmenog zrcala

Piše Damir Višić, sudski vještak za nautiku
13. kolovoza 2022. - 12:42
&lt;p&gt;Pokušajte s boljim rasporedom težine&lt;/p&gt;
Pokušajte s boljim rasporedom težineArhiva/Otvoreno more

Arbom 500 s Yamahom 20 na punom gasu postižem 14 čvorova. U deplasmanskoj plovidbi motor stoji okomito, ali kad krenem u glisiranje i pramac se podigne, motor stoji koso. Kako nema električni trim, zanima me je li u startu bolje nagnuti motor u drugu stranu da bi u glisiranju stajao okomito? Molio bih i par praktičnih savjeta o pravilnom trimanju.

Marinko B., Pula

Baza za trim izvanbrodskog motora oslanja se na činjenicu da os propelera teži biti paralelna s morskom površinom, a najniža pozicija trima određuje se već pri ugradnji motora na krmeno zrcalo.

Motor se postavi tako da dok brodica miruje, bude okomit na površinu mora, odnosno anulira se eventualna negativna nakrivljenost krmenog zrcala, a zatim se graničnik podigne za još jednu rupu.

Dodavanjem gasa u plovidbi krma će...

#TRIMANJE IZVANBRODSKOG MOTORA#POLOŽAJ IZVANBRODSKOG MOTORA#IZVANBRODSKI MOTORI#IZVANBRODSKI MOTOR GLISIRANJE
14. svibanj 2024 08:23