SSD7105 Resistance device



The SSD7105 was created out of a need voiced by out customer that they were unable to check out the basic engine systems for resistance. We often ask if they have multi-meters so they can test pickups, cables and knock meters, many times they don’t have one for one reason or another. They instead would simply change out parts until they found the correct combination of parts that allowed their engine to work again. This solution is very expensive, in many cases possibly good parts are tossed or sent to be unnecessarily repaired. More often they are left for the next guy to figure out if it is indeed bad. So we created a new test instrument that can be easily and safely be hooked up to the engine and then run tests. The beauty of the tester is its built just for the connections on an F1/F2 engine.

The meter is powered by 4 AA batteries, so it will last a long time under continuous use. With a large easy to read DC 3.5 inch display,  viewing is easy to do for long periods. Its simple to use just connect the appropriate cable and turn it on and instantly the resistance its found.

It has three main functions:

1: Test pickup cables: connect the tester and clip the red cable to the pickup end of the cable. At this point the tester could wiggle the cable to test for opens or shorts. A good quality cable should display close to zero Ohms.

2: Test knock Meters: Connect the meter cable to the the readout. You should see 7 to 10 ohms for Meter-mod and Weston 271’s. Weslers may read up to 32 ohms in some cases.

3: Test pickups:  On or Off the engine in a cold state or on the engine in the cold/hot state. The pickups are tested by removing the cable from the detonation meter and attaching the cable to the tester. No longer will you risk burning yourself as the pickup is connected cold and the resistance taken (450 Ohms +/- 100 Ohms). Then the engine started and the pickup is tested hot (650 ohms +/- 100 Ohms).  Also with the tester an operator would be able to bench screen a collection of pickups in very little time to determine if the are with in range, out of range or are open and should be repaired. This alone would save the user thousands in unnecessary costs.