TIMING LIGHT WITH TACHOMETER MANUALS
TIMING LIGHT WITH TACHOMETER MANUAL

Since 1840, it has been used to measure the speed of locomotives. The inventor is assumed to be the German engineer Dietrich Uhlhorn he used it for measuring the speed of machines in 1817. The first mechanical tachometers were based on measuring the centrifugal force, similar to the operation of a centrifugal governor. The bowl was connected to the machinery to be measured by pulleys. This consisted of a bowl of mercury constructed in such a way that centrifugal force caused the level in a central tube to fall when it rotated and brought down the level in a narrower tube above filled with coloured spirit. The first tachometer was described by an Donkin]] in a paper to the Royal Society of Arts in 1810 for which he was awarded the Gold medal of the society. 2 In automobiles, trucks, tractors and aircraft.It can be handy and quick to dial in the advance per the underhood spec on your light and go. if you are doing a dozen tuneups a day on a variety of vehicles. The tuning you are doing is very simple, but the wrong tools can make it very complicated. If you can find one under a $100 they do lot but you really want all the leads and pickups and the manual.

Garage sales for $3 maybe? I have a Fluke 88 with a tach function. if you lack one on the dash a cheap tach/dwell meter works. You need the tach to check your max advance RPM and your idle RPM. You have a tach on the dash, no? It works.

TIMING LIGHT WITH TACHOMETER MANUAL

Don't need anything else-including a manual for it. I've been using a Sunpro/actron CP7504 forever. Rather than dicking with it, ditch it on craigslist (like everybody else) and just get an ordinary, good, timing light. All the computerized stuff gets you nothing but a more difficult tool to use and one with a lot more things to go wrong. I avoid their stuff for a number of reasons-only buy it when I have to.Īside from a possible stiffy from having something labeled 'snap-on' (but they didn't make it), i would say the thing is a bad idea. They lack some things when it comes to a being a good company to buy from. Snap on isn't providing a manual for download. The replacement part for what looked like the more likely problem point (the leads) is $155.

TIMING LIGHT WITH TACHOMETER MANUALS

a whole lot of people looking for manuals and a number of people having problems. Figure since the S marks 6 degrees prior to TDC (or after, I forget) then maybe the advance on the light needs to be set there? Does this sound right? Can this type of timing light be used on an airhead?Ĭlick to expand.I looked around a bit for manuals for that. If I change the advance the S moves up and down. Problem is, without really knowing how this particular timing light works, I am not sure if the readings I get are good or even interpretable. If I set advance to 6, the S lines up in the center of the hole and at ~3000 RPM the Z lines up in the center of the hole. With the light set at 0 advance, the timing marks are unreadable. I have a snap-on computerized timing light (MT 1261A) with tach/advance functions (I don't have the timing light manual, so I basically have no idea what I'm doing - I can at least get it hooked up and the light comes on).Īt idle (~1050 RPM) the light reads about 2100 RPM (twice what it should be). Right now, I am checking the dynamic timing. I am taking care of a few maintenance items as I gradually get familiar with the machine.

Timing light with tachometer