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Chris Grim has set the fastest two lap oval time ever recorded in NAMBA. He has set the record for A hydro with 15.575 seconds / 77.04 MPH. And it is the fastest time ever set in NAMBA two lap ovals.

e-zbond.com They are the one that makes the CA for all of the one you see in the hobby stores. I have been buying from them for 20 years. Of course I do not know if they will sell in small amounts. When I buy I get about 10 16oz bottles of medium ca and about 5 bottles of thin ca. Also when I...

Good information Al. Our motors are locked with the small bearing. The shoulder on the crank with the collet of the flywheel is what holds it locked. The big bearing should not be tight in the housing or crank. It the housing is not deep enough this will cause load on both bearings. If the crank...

Jeff is right. We build the twin class to be a class by itself. We left the motor size the same as F class on the get go. After we got the class I made another proposal to increase the engine size to 1.25 so the 101's could run. You can still run a twin in F class but it must be under 1.83. I do...

After seeing the pictures that Tom posted I am in agreement that the case is what is causing the problem. With a small portion of the outer race in that kind of fit showing is why the motors are eating the bearings. Use to be that the higher ABEC was better. It still is for some setups and I...

Very interesting. Jeff maybe on to something about half of the outer race hanging out of the housing. Our motors use the method of tight fit on the outer race and slide fit on the inter race. This is the standard fit for this kind of app. Spalling is caused by ball skidding or the ball locking...

Same thing has happened to the Directors of NAMBA. Same email.

There is no doubt that Mike knows a lot about radios. But Futaba does care about boaters. They help sponsor the 2023 NAMBA Nationals. They had a tent setup at the race and was helping and repairing radios on the spot. If they could not be repaired on site they loan a radio to the racer and took...

We had Futaba come and setup at the NAMBA Nats in Huntsville. Since they are in Madison next to Huntsville. They were there for support and repair. They fixed a lot of radio problems that racers were having. And did a wonderfull job. They done some testing with one of my boats with one of there...

I don't know. I don't use castor in my fuel. But the synthetic does.

One other thing that works good when mixing fuel. When you put the fuel into your jugs put them in the freezer. pull them the next day and pour thru a paint strainer into another jug. If you have a little water in your fuel it will freeze and will be strained. you will see the colored ice in the...

The Promodeler DS100DL is a great servo. But does have a little problem with being hooked up to an engine carb on a nitro boat by using a metal rod. They work great if you use a plastic rod and in airplanes. We jumped up to the DS150. Same size servo but has a better feedback pot and will take...

We have two of these.

If you have never been to Guntersville, AL for this event you should go. This is probley the fastest lake in their series. We were all there. Mark Grim, Chris Grim, Chris Wittrig and others. We talked to Mike and Robie Betke, Buddy Bendict and his son as we were looking over their boats in the pits.

Being that 3M #5 is a OEM to the electric motor repair shops. Only my suppliers sell it. Very, very hard to but from 3M or a tape supplier. It is not a tape it is a film. It is one mil of silicone adhesive and one mil of mylar. We use it in rewinding motors. One layer is good for 10,000 volts...

You can put a ohm lead on one bar and start read to the next bar and keep going around the com. Don't know if the ohms will be that high to tell the differance but you may find the open bar. There again it may read all the way around and only opens at running speed. The way it is wound is you...

If you can look at where the wires hook on the bars of the commutator you may see the problem. I have lifted the hook up and scrap the wire and push it back down. Then take a solder gun of at least 250 watt and solder the wires at each bar hook. This will fix most of the time if the wire is not...

Sounds like the armature has open winding. Everytime the brushes past the open bar on the com will make it feel like it is out of balance or growl.

Answer is no. The case is the same but the case bore for the sleeve is larger than the 67 sleeve.

It would do it. It is what we call a Bug Pond motor. Large chemical plants use them to stir their pond where they process their water. This has been done for over 50 years. Other than what you might hear they don't just take water out of a river and send it back when their done with it. It must...