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[mook]

I want to replace an electric motor with a bigger more powerful one, the problem is that the drive shaft is too high by about 8mm. Is there an easy way to do this, maybe a belt drive   . This model really needs more power than is fitted at present
Thanks in advance

[Martin (Admin)]

Hi Mook,

What type of boat and what is the designation of present motor?

[mook]

I want to fit an 800torpedo into a 36in MTB currently using a 500 size

[DickyD]

Could we have a photo of what is there at present Mook ?

[mook]

Sorry I dont have a digital camera, all it is is the prop shaft and the motor drive shaft is higher than the prop shaft with the motor sat on the keel of the boat, so somehow I need to link the two togeather. Hope this makes sense

[DickyD]

SHG do all you need for belt drive Mook.

http://www.shgmodels.com/acatalog/index.html?http%3A//www.shgmodels.com/acatalog/SHG_Online_Catalogue_Marine_Model_Kits_for_Radio_Control_28.html&CatalogBody

[Bryan Young]

why not tilt the motor and use a double universal coupling? Had to do this on my Bluebird of Chelsea and it works fine. BY.

[Martin (Admin)]

Yes, as Bryan says, you could move the new motor back (or shorten the prop shaft) and use a double (Kardan) type coupling to join the two.

[John W E]

Hi there  -  is there a problem with lifting the motor to the correct level, so that it is in line with the propshaft, by building a new motor mount underneath the motor? - then just using a standard coupling.   If you have a look in Masterbuild Class, under the 63 ft Whaleback build, you will see how 3 motor beds were built out of plywood to enable them to be aligned with the shafts.

aye
john e
bluebird

[mook]

Hi there  -  is there a problem with lifting the motor to the correct level, so that it is in line with the propshaft, by building a new motor mount underneath the motor? - then just using a standard coupling.   If you have a look in Masterbuild Class, under the 63 ft Whaleback build, you will see how 3 motor beds were built out of plywood to enable them to be aligned with the shafts.

Sorry it is the other way round, the motor is too high

[John W E]

hi ya mook

if the motor is too high and cannot be lowered by cutting a 'notch' out of the keel to facilitate the levelling of the motor - have a look Cervia/Spashett builds and you will see I use a belt drive gear box - supplied from MFA (cost roughly around £12) saves ya all the hassle of sourcing pulleys and timing belts.

aye
john
bluebird