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That's the knife blade that i was referring to. Parallel front and rear, and slight wedge. Very hard and stiff. But as David said, watch your fingers around the pit table or retrieve boat. You will need to come up with a water cooling method for the larger classes. You can silver solder a...

Have you tried a knife blade wedge yet?

I have a copy of Brian Callahan's paper on ventilated rudders. Basically says that the wedge has less drag than the straight. If I recall correctly, at high speeds the straight blade cavitates a short distance back from the leading edge. The wedge stops the cavitation due to constant pressure...

Hey Dan, We talked before. I sent you a PM. Give me a call. I can meet you in N. GA with whatever you need. Jon

Typically the inline induction setup has lower internal case volume due to the intake tract layout. Which in turn is what gives the increased torque.

The head bolts for the LS and SS are M3.5-0.6mm and the backplate/carb M2.6-0.45mm. Be careful because a 2.5mm screws have the same pitch and will thread into the backplate. But they will pull the threads when you attempt to torque them. I have plenty of the backplate and carb screws in stock...

My neighbor lost a $700k house one Sunday morning. He had just returned from a business trip to China and brought back a LiPo powered car. He put it on the charger before going to church. The house was gone when he came home from church. Fire definitely started in his office where the car was...

Have you tried blowing in the pipe to make sure that the pipe pressure is getting to the tank. The fast retraction from the carb sounds like the tank is going under vacuum when the motor runs. Once the motor stops, the air goes back into the tank from the carb and equalizes the pressure. You...

Your motors have the same problem as the MAC. The OB adpaters were made for an RS or EVO style motor. The RVO/RS motors are at least 1" shorter than your motors due to the different crankshaft setup. It is possible to make a mount that would work, but the issue then would be the motor height due...

I'm pretty sure that I have one in my parts box. I also have needles. Let me check the bin and get back to you.

Sent an email with some pics of the billet motor. I have pics of all that I described in the email. Just let me know what you would like to see pics of.

Paul, I called and left you a voicemail. I don't have any spare slide valve carbs. The race prepped billet bearing housing drum rotor motor and both NIB motors have slide valve carbs on them. I also have WIB bearings for the OPS motors in stock. I'll be driving down I-75 from Chattanooga to St...

BTW, what motor comes with an 8-32 water fitting? or is this going into a thin rudder blade?

I guess it depends on how overcool you want to motor to be......

I also have several OPS67's if you're still looking. A couple NIB red heads that have never seen fuel, and a race ready billet drum motor that is itching to get into a boat.

How quickly does it die upon hitting the water? How is the water coming out of the engine routed: drilled hole straight up, or do you use and exit waterline. If exit waterline, check for splits. Instant dead is often caused by water on the plug. The fire goes out as soon as the water hits the...

I have some Paris 90 aluminum pipe fittings that are male thread. Not sure if they are 8-32 or 10-32. I'll check when I get home tonight. As I recall, I bought up all of their inventory a few years back. I'm thinking that they may be 8-32. Jon

I also have a limited supply of the Tettra 90 fittings. See my post in the MFG For Sale forum for pics.

Be sure to ask Miniature Bearings if the 6002 bearings are WIB. The last time I checked they had changed their source to Taiwan. They told me that they no longer stock the 6002 size with WIB.

Daniel, the 67/80 bearings are $44/set. Shipping would be $7.50 for all. I don't have 12 sets of the 6002 big bearing on hand at teh moment. In fact that was the bearing I alluded to in my previous post. 50 pieces of that bearing is usually enough to last me a year, but your order is the...