MMM V3 problem with heatsink

[SpEEdyBL]

More solder joints? More radio interferience? Less flexibility in the wires going to the motor? Less spectacular looking? Maybe that's why.

It's not rocket science to prevent a short and the anodizing of the heatsink is not even electrically conductive. Patrick @ Castle creations insists that the bullets touching the heatsink is not a problem and never was.

[lxmuff]

Originally Posted by SpEEdyBL

More solder joints? More radio interferience? Less flexibility in the wires going to the motor? Less spectacular looking? Maybe that's why.

It's not rocket science to prevent a short and the anodizing of the heatsink is not even electrically conductive. Patrick @ Castle creations insists that the bullets touching the heatsink is not a problem and never was.

He usually admits to issues they have had, but a novice at this hobby understands the short problem. If they touch at rest, they will rub dynamically and eventually short after the coating is worn off.

I have two friends that just sent theirs back because of the short. One even hurt the battery. Some of these don't have any room to put lexan like mine, so I just removed the bullets all together.

[brushlessboy16]

For the second time in this thread.
From the President of Castle creations, Even if the coating is worn off, It will not short

[Topas]

Originally Posted by brushlessboy16

For the second time in this thread.
From the President of Castle creations, Even if the coating is worn off, It will not short

Why ? In my case it will short ! There is not enough room to put a piece of paper between the bullet and the heatsink....

Never mind - last night I tried the MMM instead of my MGM 22418 in an Losi 8ight-E. I experienced a little more cogging in comparison to the MGM - but it is not bad at all.

[RC-Monster Mike]

Originally Posted by brushlessboy16

For the second time in this thread.
From the President of Castle creations, Even if the coating is worn off, It will not short

Patrick said that they could not duplicate the short in this case, and hadn't witnessed it. That doesn't mean it can't happen (and IMO eventually it will happen if both bullets are touching the aluminum conductor - it is only a matter of time). Personally, I would not even consider running a controller that has this potential issue beyond initial testing - I would address it before any extensive driving. I don't care who says its OK - it looks like a short waiting to happen. I suppose if(when) it does short, it will be covered by warranty, but the batteries won't be covered(or the chassis and melted Lexan body). Just my opinion based on 8 or so years of brushless car/truck use. :)

[Topas]

Originally Posted by RC-Monster Mike

Patrick said that they could not duplicate the short in this case, and hadn't witnessed it. That doesn't mean it can't happen (and IMO eventually it will happen if both bullets are touching the aluminum conductor - it is only a matter of time). Personally, I would not even consider running a controller that has this potential issue beyond initial testing - I would address it before any extensive driving. I don't care who says its OK - it looks like a short waiting to happen. I suppose if(when) it does short, it will be covered by warranty, but the batteries won't be covered(or the chassis and melted Lexan body). Just my opinion based on 8 or so years of brushless car/truck use. :)

Dear Mike,

thank you very much for this statement. I drive brushless boats, cars and flying objects ;) for years and I always use my own brain.

Look at the images I have taken of my V3 MMM and you will see that the battery side of the bullets hit the heatsink. This is a very serious problem - and that is the reason why I wanted to warn other users.