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  1. tnrcboatracer

    Sold Raptor 21

    If Tom does not want it at $400. I'm interested.
  2. tnrcboatracer

    K&D flow meter

    I also have a12V 1A AC/DC charger that works with it.
  3. tnrcboatracer

    K&D flow meter

    Mine has charger built in. Came with a pigtail to clip to a 12v battery.
  4. tnrcboatracer

    Needle Bearings

    All. I can use a couple 100 packs for my bundle of MAC67/84 motors. Please email me at [email protected] . The 45 rods are 7mm wide on the big end, vs 8mm wide on the 67 rods. The 45 needles are 1mm shorter. I.E. 1.5mm diameter x 6.8mm long
  5. tnrcboatracer

    Needle Bearings

    IIRC, the OEM OPS needles were 1mm diameter. They were smaller than the CMB pattern needles.
  6. tnrcboatracer

    K21 Deliveries

    Terry, adding a shim to the crank will allow the crank to float rearward towards the drum. Maybe NG.....
  7. tnrcboatracer

    Bearing damage

    I would not recommend the full complement with steel balls in our application due to the surface contact speeds causing the balls to microweld at the skid contact point. I'm trying to find the thread where the variation in angular velocity was discussed. I want to say it was on the order of 20%...
  8. tnrcboatracer

    Bearing damage

    Also the mass of the balls is less for the acceeration and microwelding of the balls to race are eliminated with ceramic balls. Comparing a 100k turbine application to a single piston engine is apples to oranges.
  9. tnrcboatracer

    Bearing damage

    Greg Settle would buy the WIB bearings from me a reball them like Terry with ceramic balls for the exact fit he wanted for the tether car engines he set up. We had many coversations about bearings before he passed. Other than metallurgy and fit, the other key is concentricity of the ball race to...
  10. tnrcboatracer

    LETS GET A THREAD STARTED.. 2024 AND THE 75TH ANNIVSARY OF IMPBA INTERNATS!

    Creek rose last night in TN... Tornados north of us about 50 miles. See everyone in October.....
  11. tnrcboatracer

    OPS PARTS NEEDED

    Sorry for the late reply. I sold all my OPS stuff in a bundle to Frank.
  12. tnrcboatracer

    OPS PARTS NEEDED

    Email or IM me. I have a few totes of OPS motors and parts. Jon. [email protected]
  13. tnrcboatracer

    ZOOM Carb. Question

    I use the plastic arterial clamps.
  14. tnrcboatracer

    PayPal BS

    I always send $1 first. Then confirm it arrived at the intended recipient. I need they receive they are now in my contacts. Just resend the balance to the same address. F&F is like sending cash. Once it is sent, it is gone.
  15. tnrcboatracer

    Any plumbers on this board?

    Have you checked to see if it is LH thread? But could just be deposits on threads on inside.
  16. tnrcboatracer

    2022 IMPBA INTERNATIONAL REGATTA HUNTSVILLE, ALABAMA

    Thanks Rick. How do I reserve or purchase a T-shirt?
  17. tnrcboatracer

    Okay History info! what year and first R/C boat!

    1978, scratch built tunnel fron MAN plans. Maybe an old JD design. Looked like a Lapcat. Cut the K&B 21OB lower unit to add an OPS pipe straight out the back. Radio was an old Futaba 2ch wheel box on 72.160. Still got it around here somewhere. Ran at the old Atlanta club pond in Stone Mountain...
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