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APBT

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About APBT

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  1. Can't think of anything in particular. After all, how fast can an old fart who's in his mid 50's really be going? 😯🐢
  2. Yes, predictably a "my oil is better than the inferior oil you use" response. As stated, not disappointed in the wear of the Barnett stainless inserts since the baskets can easily be returned to like new condition. However, the stainless inserts are not an install and forever forget option. It's a very good choice, but not perfect.
  3. 40 hrs Honda HP and Maxima MTL The point is that the baskets will still notch over time. The stainless inserts they use do not have the hardness to be an install it and forget it part as some would like to believe. The Barnett is not a foolproof panacea. However, their customer service is very good and your basket will be returned in a like new condition for minimal cost. It's still a good option for people looking for baskets.
  4. The good news is Barnett will replace your stainless inserts for a nominal fee and return your basket looking like this.
  5. The Barnett baskets with stainless inserts are notch resistant, but definitely NOT notch proof.
  6. APBT

    STIC metering block testing 17 300XC

    If you have a STIC with 0.114" tube diameter, the N3EW will be too lean irrespective of the main jet you're using. The wide final diameter of the N3 Yamaha needles will be fuel limiting. If you're using a STIC with 0.115" tube diameter, the N3 series will work. The difference of only 0.001" in internal tube diameters does not sound like much, but it makes a notable difference in jetting. YMMV.
  7. APBT

    PWK needle identification decoding

    If you're trying to find an N3EJ needle, why don't you just go to a Yamaha dealer and order one? N3EJ = Yamaha part number 4SR-14916-EJ-00
  8. A replacement servo motor is the Mabuchi RS365SH. You can find these for a few dollars.
  9. The E-flite EFLM1901 is an identical 12T brass pinion gear as stock except the shaft diameter on the E-flite gear is 2.0mm instead of the stock 2.3mm. The solution is simple: using a #44 drill bit- drill the inside diameter of the new brass gear to the proper size. Carefully hold the gear in a soft jaw vise when drilling. The brass teeth are soft and can be damaged easily. The #44drill will provide the proper tight press fit for the gear not to slip on the motor shaft after it is installed. If you have trouble pressing on the gear- you can try a #43 drill, but it might not be tight enough afterward. DO NOT pound the new gear onto the motor shaft with a hammer. Instead, support both ends of the motor shaft in a vise, and gently press the gear onto the shaft, simultaneously squeezing both ends of the motor shaft together with the new gear on it. Press the gear to the same depth on the shaft as stock with the distance from the motor can as your reference. Do not use the tip of the shaft as a measuring reference. Be fully aware that this gear WILL NOT fit onto your motor shaft without drilling out the inside diameter first. You may very well be able to find the proper 12T pinion gear in 2.3mm on your own to fit perfectly, but the E-flite EFLM1901 fits with slight modification without spending exorbitant amounts of time searching for the perfect gear. Works great for around $3
  10. APBT

    CR250 RC Cables

    Just curious- what did you use to clean your cases with?
  11. APBT

    What's your Eric Gorr experience?

    H4L has a valid point about Pro Circuit's work on the case reed engine CR250's. For around $300, the return on your investment is very good, especially if you opt for the C12 race fuel head with their porting. We sent a 2005 cylinder and head to PC and it was night and day better than stock. We sent a YZ250 cylinder and head to Eric a few years ago for 265 conversion. If memory sevrves, I think we paid around $500 for his kit that included: (1) boring the cylinder to 265cc, (2) nikasil replating (3) porting (4) head mod and (5) new piston and gasket set included. The price was very reasonable for the amount of work involved. The results were OK- some power was added in all rpm zones without appreciably changing the way it ran from the stock YZ250. However, guys should be aware that going to 265cc is going to require additional time to test and re-jet on every circuit from pilot to main jet from your original 250cc setup. The required jetting changes were surprising considering only 15cc of additional displacement was added. We have read many mixed reviews regarding Eric, but our experience was good.
  12. APBT

    STIC metering block testing 17 300XC

    Harrperf, All valid points. Thanks for the input.
  13. APBT

    STIC metering block testing 17 300XC

    We have had the chance to do a little more testing with the STIC. Background info on jetting, setup, etc can be viewed on this Honda 2 stroke link:https://www.thumpertalk.com/forums/topic/1234222-stic-block-review-2006-cr250/ We have seen very good results in the mid range, top end and over-rev rpm zones. Throttle response is clean and crisp with an enhanced ability to build rpm's more quickly and extend the over-rev zone. Good work here. Previously, we were slightly dissatisfied with the throttle response in the off idle to mid range transition zone. Derek Harris at HP Race Development suggested a simple cutout mod to the STIC hood which effectively emulated the stock Keihin cutout. We were able to accomplish this small mod in a few minutes with a Dremel tool. The results are excellent- improved off idle to mid range throttle response and crispness. Recent reports indicate that STIC has incorporated this mod into it's new units, so kudos to STIC for their effort. For individuals who own older STIC units, we suggest you perform the mod. If you are not comfortable doing the mod on your own- then HP Race Development, or maybe STIC should be able to help you. Being picky, we have also identified a very slight rpm instability in the idle to mid rpm zone. This instability is not noticed on an aggressive sand track, or high speed hard packed track where speed and rpm are kept up. However, in a scenario where the rider is attempting to navigate a slippery off camber turn on a wet clay track where precise throttle control is imperative, we have noted a very very slight rpm wandering effect. Not enough to be disconcerting, but slightly noticeable. We are sure that with additional testing, this issue will also be successfully resolved. In all, we are very pleased with the overall performance of the STIC.
  14. The vapor blasting process produces some very nice results on engine cases. https://www.restocycle.com/ http://noreasterblastworx.com/
  15. APBT

    STIC metering block testing 17 300XC

    https://www.thumpertalk.com/forums/topic/1234222-stic-block-review-2006-cr250/ Good info in this Honda thread which might be of interest to KTM guys who are using the STIC.
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