Build Problem

[electric]

Looking for ideas on this. I bought a 580L 12L motor and as you can see from the picture, the motor fits into the mount fine. The problem is that the diameter of the water jacket I just bought does not! It is to large to fit between the mounting brackets. So before I break out the cutting tools I thought i would see if there is some other approach to this. Here are few thoughts/questions.
1. Is there a thinner water jacket out on the market for the 580L motor? I have about an 1/8 of an inch of clearance on each side.
2. Can I run this one without a water jacket? This is a low amp motor with high voltage (8s) so I was wondering if it will run reasonably cool? I am pretty sure it will not, but if someone has used this motor tell me if this might work.

Thanks

[bonewar]

Electric,

These water jackets should fit nicely . There made for the NEU motors , but i think they will fit your motor. Send Andrewg an email i'm sure he could help you .
Check them out.
http://www.fastelectrics.com/blmotor...#Motor_Kuhlers.

And there not to expensive.

Bonewar

[Jeepers]

thats the only thing I do not like about those aluminum water jackets, just to bulky they could be thinned down some. but they look cool polished!

[electric]

Thanks. The 580L is 45mm in diameter and the site does not show one in that size, but I will email him and see if there is something that will fit.

[old yeller]

How's about

How's about ...
2 spacers, one on each side, to fit between the FG mountings and motor-plate
in order to move the Fg mountings outward ?
Longer screws to connect them to the motor-plate ?
The spacers could be cut from alloy sheet, hardwood, or FG ...
drilled or slotted as the FG mountings,
and epoxied to the FG mountings for strength ?

Just a thought.

[egneg]

Just add some washers to widen the mount.

[electric]

Thanks for the input. The spacer idea is reasonable. I would have to get the mount broken free since it is glassed down to the hull, but certainly a better solution than cutting the mount up. I did find a "rubber cooling jacket" at offshore that actually is the right size for the motor. These are those cooling jackets that came with the super v's, but apparently they can be ordered in larger sizes. Not very pretty, but if it works and just slides on with no cutting or glassing then it is worth a try first.

[andym]

Electric it is as simple as heating the epoxy holding the mount in, when over 60 deg C the epoxy just peels straight off. That is if the glass is just holding the mount and not part of the greater hull.

[electric]

THANKS for the mount removal solution! I did not know that, and that makes the job more reasonable!

[andym]

The way I smash boats around I had to find a way of removing epoxy !! When I actually read the container it tells you that it looses strength over 60 deg C so I tried with the hair dryer ( my daughter is still mad at me, the hair dryer lives in the shed now!) and with a little effort it comes away, and when it cools it is just as strong as before.

[Jeepers]

Thanks for the input. The spacer idea is reasonable. I would have to get the mount broken free since it is glassed down to the hull, but certainly a better solution than cutting the mount up. I did find a "rubber cooling jacket" at offshore that actually is the right size for the motor. These are those cooling jackets that came with the super v's, but apparently they can be ordered in larger sizes. Not very pretty, but if it works and just slides on with no cutting or glassing then it is worth a try first.

those rubber cooling jackets are a pain in the butt to get sealed. the aluminum one is a much better choice along with spacers on the mount.

[ozzie-crawl]

i had the same problem, what i did was move the jacket all the way to the back screws on the motor then notched the fibreglass part of the mount to allow it to fit.
didnt need to remove much in the end with the jacket back as far as it would go and the mounts still holding up.

[electric]

Well I decided to cut the motor mount and that worked great! Thanks for the suggestion. I have a question, I put two thrust bearings stacked on the motor so I could get the collet(sp?) to not hit the motor mount. I have never used thrust bearings before so I am worndering if this will work ok? By the way, I am running 28.8 volts and when you connect that last plug there is quite a POP. You have to believe the wiring is correct!

[ozzie-crawl]

when i cut mine i only needed to remove a small amount,you have had to remove most of it, if you can shape up a piece of wood to support the rear of the motor and epoxy block of wood in place.
the when connecting esc to batteries you will get a spark and the loud crack
usally more noticeable with higher voltage,if you do a search on here you can find a diagram to build a small spark arrestor.
never used thrust bearings cant help you there.

[electric]

Thanks, actually there is a small piece of wood under the motor that is supporting the weight of the motor that is shaped to fit the curve of the water jacket so it is pretty sturdy.