Bancroft PT-596 Patrol Boat - RTR
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Have not purchased yet. At this point, I am an interested bystander and a possible future customer.
I have to say I was surprised to see that MRC had a water cooled ESC in there, with no water flow to cool it. That is the worst case possible, worse than an air cooled ESC without enough cooling flow.
My earlier proposed temp fix incorrectly assumed that the ESCs were air cooled and simply needed a little more airflow.Comment
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I am now waiting for MRC to provide me a new ESC. I agree since they used a marine ESC it should be water cooled. That is the way they were designed. Otherwise, they should have installed an air cooled ESC. At least I know how to correct that with very little effort.Comment
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So it is the same ESC and you have to do a mod yourself ? If the problem is due to poor design they should take the boat back, give you credit toward a redesigned boat. DaiI am now waiting for MRC to provide me a new ESC. I agree since they used a marine ESC it should be water cooled. That is the way they were designed. Otherwise, they should have installed an air cooled ESC. At least I know how to correct that with very little effort.Comment
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dai phan,
I have not received my replacement ESC yet. According to Andrew they are waiting for Bancroft for replacements. Andrew believes they will ship it by the end of the week. I will keep you posted. I also, gave this boat a 2 star rating.Comment
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I can confirm that the factory has been closed for several days due to the seven day China National Holiday (basically their July 4th long weekend), but that replacement components were shipped by Air to our US Warehouse to fulfill the handful of service tickets the CS Team received. Those will be shipped out to customers as soon as they arrive and you'll be notified in your respective Service Tickets via your respective Motion RC CS technician. Contact them for any specific questions, especially if the delivery address is different from what was entered for the boat's original order.
The factory has been producing these boats for many years, so we're especially grateful for everyone's support as we elevate the production level to a consistent, modern standard. Hundreds are already out there recently, and we look ahead to continue moving forward. Tips about instruction manual improvements, requests for different finish levels, and other feedback are all valuable and we carefully consider everything.
Thanks all!Live Q&A every Tuesday and Friday at 9pm EST on my Twitch Livestream
Live chat with me and other RC Nuts on my Discord
Camp my Instagram @Alpha.MakesComment
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Please do a review. DaiComment
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Hi all. I am going to make the water cooling modification. I did decide to wait for the new ESC before I do.
I expect it will be the same as the original but I am going to hold off on any changes until I see it.
I would really like to know how many of the total of these boats had this same issue.
I the mean time I made a interesting purchase. How about 48" PT. An old Dumas kit.
If anyone has any info on this boat I would love to hear it!
Thanks
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All PT Boat captains, I have some interesting news. I received an email from MotionRC today concerning the ESC's. According to them the water cooled ESC's should not have been installed. They also stated the ESC they are shipping to me (I would hope to other people who had issues) will be air cooled. Just have to wait and see.Comment
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But I would like to know where the cool air is coming from? Ships don't have air intakes like planes do. DaiAll PT Boat captains, I have some interesting news. I received an email from MotionRC today concerning the ESC's. According to them the water cooled ESC's should not have been installed. They also stated the ESC they are shipping to me (I would hope to other people who had issues) will be air cooled. Just have to wait and see.Comment
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For me, I have a thermal gun to measure temps. My plan is to run the boat for a few minutes and check the temp of the ESC. If it gets too hot I can open windows in the cabins. That will allow air to flow in and out of the boat. Since I do not have much faith in these electronics. I am going to run, test, check and verify. I have the tools from my electric flying so, I am set. I figured it could be a slow process. But, as I check things out to acceptable level I will gain confidence for next year's patrols. But, believe me if things start to go south I will be on the horn to MRC.
As a side note, I plan to mount my ESC lower in the boat. Doing this for 2 reasons. Hot air rises and will accumulates inside the top of the cabins first. Second, to make it easier for checking. Where MRC mounted the ESC originally made it accessibility a little difficult.
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If the new esc doesn't come so equipped, trim the shrink wrap off the heat sink, but leave enough to hold it, and smear some computer cold grease on it, and zip strip a heat sink from an old computer to it. It'll significantly help keep things cool.Comment
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Assuming a decent heat sink on the new air cooled ESC, it should work OK without ducting fresh air into the interior of the model. There is a fair amount of air volume inside these models and it would take a while for the motors and ESCs to heat that volume of air up significantly.
Aircraft typically have the ESCs without oversized heat sinks in a much, much smaller compartment, so it needs some cooling airflow.
Interesting mistake by the factory. Should have been caught by QC, but stuff happens.
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I am going to take the photos of the ESCs in the LC and the Cutter and send to MRC. If they are indeed water cooled, then they should be replaced with air cooled. How dependable these are ? ... hard to say. DP
Assuming a decent heat sink on the new air cooled ESC, it should work OK without ducting fresh air into the interior of the model. There is a fair amount of air volume inside these models and it would take a while for the motors and ESCs to heat that volume of air up significantly.
Aircraft typically have the ESCs without oversized heat sinks in a much, much smaller compartment, so it needs some cooling airflow.
Interesting mistake by the factory. Should have been caught by QC, but stuff happens.Comment
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Yes,I'm hoping there is some type of data sheet/ instructions. I was told it would be a water cooled ESC again by the techs, went and bought flush pickups for water cooling. Now to hear it will be air cooled, its fine with me I just want a realiable boat that doesn't smell like burning insulation after each run. I also ordered the 50 cal upgrade with carrige from Shapeway,also the 37mm gun. Pobably look at the 20 mm down the road. I was very impressed with the PT crew set I got, 9 figures . Let me know when those ESC's start showing up. Still waiting to do a review until I get things sorted out.Comment
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RSRN,
Can you send me the link for the 50 cal machine guns. I might need them. The original barrels are too flimsy.Comment







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