Performance Trends, Inc.

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1)  Gen 2 SuperFlow Dyno Control Valve  We've developed a new actuator for the water valve on SuperFlow ^tm dynos.  We believe it is more durable than the previous valve actuator, and has limit switches for maximum opening and closing travel.  It is also better suited for doing both valve position control, and RPM control.

for more info on our Dyno Controllers

for info on our Dyno DataMite data logger and software

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2) Shock Dyno IR Temp Sensor Flex Bracket  We've developed a new flexible mounting bracket for our Shock Dyno's IR (infra-red) Temperature Sensor.

click images to enlarge

The new bracket's features include:

• Flexible arm, letting you bend it into most any orientation.
• It allows for 360 degree rotation of the sensor. 
• It can easily be clamped to the mast either above or below the shock.
• You do not have to remove the load cell bracket to install or uninstall the sensor and bracket.
• You can retrofit your dyno with the new bracket if you have the old solid bracket.

for info on our Shock Dyno

for prices on our Shock Dyno and accessories like this bracket

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3) Smokey's Smarts  Smokey Yunick has been gone for many years, but his work is still used to guide race engine builders to this day.  If you do any work on a flow bench, you know that most of the world flows heads at 28" water.  I always thought is was because it was about 1 psi (nice, round number) and produced reasonable flows, somewhat similar to an engine's flow rate.  However, one of our customers shared an old article by Smokey and he describes the work done to come up with 28".  It is an interesting read, and lets us know a lot of thought and work went into it.

We have an FAQ on our website, where I explain what's going on inside the engine.  It was to answer a user's question about the quality of his flow data if he does not flow at 28".  I explain that the engine is NOT running with 28" across the valve, as shown below in this picture from this FAQ.  However, now this FAQ has a link to this article from Smokey provided by Allen Roberts, Starting Line Products, Idaho Falls, ID.   Many thanks to Allen.

Pressure across intake valve in running engine (with more graphs in our blog entry)

for our FAQ on flowing heads at different test pressures, with a link to Smokey's article

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4)  Featured Product - Land Speed Software  Land Speed racers are a pretty small, tight knit community.  It is also one type of racing where the rules are relatively open, and creativity is rewarded.  These tracks have very limited schedules, so you may have to wait 6 months to a year to try your modifications or adjustments.

Some of these racers use our Drag Racing Analyzer Pro to simulate what they may see when they go to Bonneville or other top speed tracks.  It has many features that top speed racers have requested to simulate what's happening through a 6 mile track, or most any other distance.

Special Bonneville Preferences opens up Land Speed Record Features

Find Best MPH with Chain Calculation changing final drive ratio.  A Final Drive of approximately 2.6 appears best

for more info on our Drag Racing Pro for Top Speed Racing

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5) Last April's Newsletter Here are the topics covered in our previous newsletter.  If you would like another copy of April 2020's newsletter (or any previous newsletter) for detail on these topics, visit our website at: Performance Trends Newsletters 

1. Blowby Calibration Checker
2. Free Subscription to Speedway Illustrated
3. Featured Product - 4 Link Calculator
4. Last March's Newsletter

Performance Trends reserves the right to discontinue, update, or modify its product line and pricing at any time.