| Author | Message | ||
     Danair |
Back traced EVERY ground in harness to a point of "0" relative motion. (here we go with setting zeroes again!!) Spliced in aircraft bonding strap to go to actual ground point. Infinitely more flexible, more cross section, etc. We have to ground all movable aircraft surfaces to the airframe with these across the hinge points so static discharge doesn't jump thru hinges, bearings, cables....I have miles of it in all sizes if anyone wants some.   | ||
| Teeps |
Curious, were you seeing a voltage drop between ground connections and the battery (-) terminal? | ||
| Reepicheep |
Nice! | ||
| Danair |
No voltage drop, but after finding 1 broken and all the rest, especially the 4 behind the forks, looking in about the same sad shape, I just decided to end the madness. Even bonded the sub frames. Took all of oh maybe 30 minutes. Still looking for p/n for the 07 harness guide up there. This braid is super soft as it is designed to be constantly in motion. I still scratch my head at how they did this for such a critical thing. | ||
| Desert_bird |
Oh ya. Love to get my hands on a couple feet of that for headtube and rear ground point. What'd you ask for some? Thanks DB | ||
| Argentcorvid |
It's not like they didn't know this stuff existed either, since the engine is grounded with one... | ||
| Danair |
DB and anyone else that wants some, just send me a SASE to: DanAir 480 Airport RD Oceanside, CA. 92058 5ft oughta do ya. | ||
| Natexlh1000 |
I did something similar. I just used some beefy wire and soldered on some eyelets. (No one can see it so I used RED LOL!) | ||
| Danair |
"I did something similar. I just used some beefy wire and soldered on some eyelets." This is merely constructive, but where you soldered is where its going to break next. Avoid soldering on anything subject to vibration at all costs. Keep an eye on that one! | ||
| Uly_man |
Did it fix your bikes problems? | ||
| Danair |
I can't really say its "fixed" or that any one thing cured it. Running pretty darn good, though. I found some big stuff. stuff the good heads say will really eff it up....like the head temp sensor only 1-1/2 in!!!! AHA I said, all proud while washing my hands and suiting up. Ran like shit. Only thing left is an intermittent open somewhere in the harness, which is why I bought a new one. I built a breakout box, used my portable o'scope...its just a ghost. We always win, though. Thanks for asking. | ||
| Teeps |
Danair Posted on Thursday, August 22, 2013 Avoid soldering on anything subject to vibration at all costs. Yep! Aircraft folks know this well. | ||
| Sparky |
I take it that these bonding straps are available at all aircraft parts houses? | ||
| Teeps |
Sparky Posted on Saturday, August 24, 2013 I take it that these bonding straps are available at all aircraft parts houses? Yes: http://www.aircraftspruce.com/catalog/elpages/copp erbraid.php?clickkey=40198 | ||
| Danair |
I was giving it away, but you migh find some other stuff you like there. You have to fab them. | ||
| Danair |
If you do buy something, have them send you a catalog. It's more user friendly. Quite a few items we can use and cheap cheap. The replacements for the 77 connector and also the new head temp, and the o2 sensor...$5.00 And what Harley/Buell call P-clamps are in the av world called Adel clamps. And if you want to tighten your kick stand bolts as easy as changing a bulb, Look for a Lycoming cylinder base wrench. You still can't get them all the way out, But I ran mine out as far as possible, degreased them and used Loctite. And they are true on torque values despite their shape. | ||
| Teeps |
Danair, Have you found Head Temp Sensors, that are the same configuration as the Buell part, in aircraft supply stores? I've spent hours researching that part. And, have yet to sniff out a clue as to where they can be bought off the shelf. I even contacted a manufacturer ( U.S. Sensor Corp.) about having some made. But with a $250 minimum order and not having engineering drawings, that quickly became a dead end too. | ||
| Danair |
When I pulled the head temp sensor, it didn't jump out at me. Even between engine manufacturers (all both of them) they are the same. A lot of this stuff started as mil-spec so the commonality. Also, since the essentials for flight must work even if the battery and alternator fell off, they are self powered. Magnetos for ignition, cyl head and egt are thermocoupled, some oil press Bourdon tube, oil temp capillary tube. A lot of them have cht probes that are actually thermocouples acting as the spark plug gasket. They are type K so you wouldn't even need the gauge, you could use a Fluke meter. Ditto if you just had to know your egt. A 9/32 hole is all thats required in the pipe, the probe is already mounted in a worm drive clamp. There are powered probes, I'll research that. I highly doubt there's any money to be saved, though. | ||
| Teeps |
Your writing above, made it sound like you already knew of an alternative source.. Saving money is the goal for locating a different source, than H/D. I would hesitate to spend anywhere near OEM price for an untried replacement. | ||
| Panhead_dan |
This aircraft mechanic is on the right track and is willing to give it away for free to boot. I ran a heavy gauge wire from batt neg to one of the through bolts on my starter years ago and it ended all my grounding problems. My problem now is trying to keep tires on the damned thing. Danair, thank you for posting. I for one very much appreciate your opinion and respect your experience. I look forward to more of your posts. Dan | ||
| Nallac |
I ran a heavy gauge wire from batt neg to one of the through bolts on my starter years ago and it ended all my grounding problems. Interesting...... Worth a try as a preemptive fix. | ||
| Danair |
Thanks Panhead Dan! I am by no means an expert, and sometimes even my keen sense of the obvious is questionable. I've learned more here than I can probably ever contribute, just throwing stuff out there. My shop is always open to Buellers in the SoCal area, one hangar being devoted to our 2 wheel toys...lifts and all. |
