EBAY: NEW HEWITT INERTIA ENGINE-CLUTCH DYNO DYNOMOMETER

THIS E-BAY ITEM IS A CLUTCH TYPE INERTIA ACCELERATION DYNO. IT USES THE CLUTCH ON YOUR ENGINE.

CLICK HERE TO GO TO E-BAY LISTING

IT WILL COME WITH A 30 HP FLYWHEEL.  IT COMES WITH  A ADJUSTABLE HEIGHT CONTROL STAND WITH THROTTLE CABLE, KILL SWITCH & WIRING, BRAKE SYSTEM & LINES, & THROTTLE ASSEMBLY. IT WILL COME WITH A USED 4 CHANNEL  DATA ACQUISITION SYSTEM THAT HAS HEAD TEMPERATURE AND (1) NEW 14MM TEMP SENSOR.  THIS ALLOWS YOU TO MEASURE HORSEPOWER, TORQUE, ACCELERATION, HEAD TEMPERATURE, CLUTCH ENGAGEMENT, SHIPPAGE RATIO, WERE TOTAL LOCK-UP OF CLUTCH OCCURS. IT WILL ALSO COME WITH A USED DIGITAL WEATHER STATION SO YOU CAN DO MANUAL S.A.E. WEATHER CORRECTION. IT WILL ALSO COME WITH A SMALL PARTS KIT TO GET YOU STARTED, KEYS, SHIMS, CLUTCH BOLTS, BRAKE BLEEDER, ETC.  I DO HAVE A PALLETING FEE INCLUDED, WHICH MEANS, IT WILL BE BOLTED ONTO A PALLET AND SHRINK WRAPPED, THEN TOTALLY ENCLOSED IN PANELLING TO PROTECT IT DURING SHIPPING. YOU WILL NEED A FORKLIFT OR SOMETHING WITH FORKS TO UNLOAD DYNO (900 LBS). NORMALLY DYNO IS POWDER COATED A MEDIUM SILVER, MAINLY BECAUSE MY POWDER COATER DOES BEST BUY SHELVING ALL THE TIME AND THAT IS THE FASTEST IN & OUT OF THERE PLACE.  THIS DATA SYSTEM WILL WORK WITH ANY WINDOWS PROGRAM, 95′ TO VISTA. IT DOES NEED A 9 PIN SERIAL PORT OR WITH NEWER COMPUTERS WE USE A USB TO SERIAL PORT ADAPTER ($40.00). THE S.A.E. WEATHER CORRECTION CAN ALSO BE DONE THRU THE COMPUTER THRU USB PORT ALSO. THIS IS THE SIMPLEST DYNO  I BUILD. WE HAVE 108 DYNOS IN 27 STATES IN THE U.S. AND ALSO MANY FLYWHEELS AND DATA SYSTEMS CUSTOMERS I ALSO TAKE CARE OF. SEE MY BLOG FOR COMPLETE INFORMATION WWW.HEWITTSINERTIADYNOS.WORDPRESS.COM . THERE IS A LOT MORE PICTURES AND INFORMATION THERE THAT WILL HELP YOU WITH QUESTIONS OR CALL ME AT 1-641-775-3395 OR CELL 1-641-512-3395. I WILL NEED YOUR ZIP CODE TO ESTIMATE FREIGHT???????? THIS BID IS FOR THIS BASIC CLUTCH DYNO. IF YOU WANT ANY OPTIONS LIKE LARGER FLYWHEEL, DIFFERENT DATA SYSTEM, ETC. WE WILL HAVE TO ADJUST PRICE AFTER SALE OF THIS DYNO. THIS DYNO IS FOR ENGINES FROM 5 HP UP TO ABOUT 25 TO 30 HP.  DIMENSIONS OF THIS DYNO ARE 36″ X 36″. I CAN HELP YOU WITH DYNO ROOM BASICS BLUEPRINTS OR SPECS. NORMAL PRICE FOR THIS DYNO IS $4100.00 PLUS MY COST OF FREIGHT  TO SHIP IT.  E-MAIL ME FOR FREIGHT ESTIMATE, HEWITTDYNO@GMAIL.COM OR HEWITTS@NETINS.NET.  YOU WILL NEED TO SUPPLY INTERNATIONAL ANGLE OR FLAT MOTOR MOUNT AND COMPLETE COMPUTER SYSTEM. WIRING IN SHOP MUST BE GROUNDED AND I RECCOMEND A SURGE PROTECTOR.

THANKS-STAN HEWITT

AFTER MONEY IS RECEIVED, EXPECT TWO TO THREE WEEKS BEFORE DYNO WILL ARRVIE AT YOUR PLACE. THIS IS A CUSTOM BUILD DYNO AND THERE ARE MANY PARTS OF THE DYNO THAT CAN BE CHANGED AND/OR MODIFIED FOR YOUR APPLICATION, SO WE WILL BUILD TO YOUR SPECS.

Hewitt Inertia Dyno – 2001 TO 2009 “PRO” SERIES DYNO

2001 TO 2009 “PRO” SERIES DYNO

This is the number #1 selling dyno for me. The “new” 2009 models have a new synchronous belt drive system that has almost totally eliminated belt breakage. With the old 30mm belt drive, a customer could break two to three belts a month with heavy use.

The new system uses a wider Kevlar belt with larger pulleys both top & bottom.

The “new” electric start system also has been improved. We’ve went to larger battery cables. We’ve also went to a starter relay system so the starter gets more voltage and amperage. Cranking speeds have gone up 20 to 25 percent. This helps start the engine quicker. No more fast starts or clicks of the starter with the dyno turning over.

This dyno comes standard with a 25 hp flywheel. Many of you want a 30 hp flywheel for the animal Ltds & some over engines coming into popularity. The longer the dyno pull in time (seconds), the more accuracy. This dyno comes standard with a torsion shock system and a 75 hp one-way sprag clutch. An optional 100 hp sprag clutch is an available for a small optional price. We do offer another dyno with flywheels up to 49 hp that can use a one-way sprag clutch. The reason we’re going to a different flywheel is to save you money in freight costs!

The pictures highlight some of the most common used options.

This dyno normally comes with one-way sprag clutch or can be bought for about $717.00 less without sprag clutch & torsion shock system. So this dyno would be electric start direct drive.

Kart Engine Dyno – Inertia Dyno

THIS IS OUR #1 SELLING DYNO. 2001-2009 “PRO” SERIES DYNO- this dyno comes with new USB Pro data system. This dyno measures 27 ½” x 48” so it will fit thru a 28” door of your dyno room. . It has the new electric start system and the new 35mm belt drive. It comes with a small parts kit to get you started. This dyno has two separate axles and can have a sprag clutch or can be built direct drive. Normally this is bought will a pro type data system and sold with a complete computer system with printer, surge protector, all cables, etc. We would need zip code for freight estimate. We also should talk about what you want for computer system (laptop, desktop, printer, etc.)  –

$7999.00 – call me and I can give you all the details

or I can make one specifically for your needs.

~ Stan

c 641.512.3395

Dyno Flywheel Axle Assembly

Looking to purchase a Dyno Flywheel Axle Assembly that
is balanced to get minimum face run-out? Details below:

COMPUTER CUT-OUT, BLANCHARD GROUND TILL PARALLEL
ON BOTH SIDES, THEN WE WELD ON SPECIAL INNER HUB
AND TORQUE UP WITH DIAL INDICATOR ON FACE
TO GET MINIMUM FACE RUN-OUT.
IF ITS NOT GOOD ENOUGH,WE TAKE IT APART
AND START OVER!

Contact me to purchase:
Stan Hewitt
c 641-512-3395
hewittdyno@gmail.com
twitter.com/InertiaDyno

CLUTCH DYNO TESTING on a Hewitt Inertia Dyno

CLUTCH DYNO TESTING

A lot of you ask about dynoing a clutch. It’s very easy! Open your software to the dyno screen, put in your correct ratio, sprocket number divided by clutch driver size. In this case, 53 tooth divided by 16 tooth clutch driver, =3.31. Start your motor up; hit the gas to wide open throttle. Do this a minimum of at least twice to warm up clutch. Watch the flywheel rpm screen to see about what engine rpm the clutch is slipping at currently. After a few seconds, the rpm will go higher (clutch locks up or quits slipping). I always recommend you take engine rpm to a minimum of 5500. Down load data and look at it. Graph it with using clutch /converter slip in relation to engine rpm. On this print out, you’ll see clutch engages at 3100, slips up to 4 to 1 ratio which isn’t real bad, then has total lock-up at about 4050 rpm, were line is almost flat again. This example is a JRII IKF motor with a .500” tapered restrictor. You’ll learn after a while that the clutches with sintered metallic discs tend to be the best. The ceramic and organic discs do not seem as good. On the real low hp engines, some people like the clutch to slip a little so it does not bog the motor. This depends on your preference of what works for you? Motors with higher horsepower tend to slip more! Lower numeric gear ratios tend to slip more!

How to do the test? On the second rpm pull to warm up the clutch, brake flywheel rpm down to 900 rpm, engage data system, wait a couple of seconds, go wide open throttle, take engine rpm to at least 5000. Download & look at data by graphing it. Remember with Pro software you can look at data in time/seconds just to see how long it took clutch to hook up. Remember you can also do up to six overlays in graphing mode.

If you have a customer getting killed on the starts or restarts and then he/she runs them down and passes people later in the race, they may have a clutch problem?

Also if you race at a track the uses Calcium Chloride, you’re much more apt to have sticking levers on the clutches. No chemicals seem to remove the oxidations. The only way I found to get clutch back to normal is take it apart and file out area were levers actually work. Then maybe spray a clear acrylic over the area to keep it from happening again?

My Number 1 Selling Dyno – Hewitt Inertia Dyno’s

THIS IS THE #1 SELLING DYNO. 2001-2008 “PRO” SERIES DYNO- this dyno comes with new USB Pro data system. This dyno measures 27 ½” x 48” so it will fit thru a 28” door of your dyno room. . It has the new electric start system and the new 35mm belt drive. It comes with a small parts kit to get you started. This dyno has two separate axles and can have a sprag clutch or can be built direct drive. Normally this is bought will a pro type data system and sold with a complete computer system with printer, surge protector, all cables, etc. We would need zip code for freight estimate. We also should talk about what you want for computer system (laptop, desktop, printer, etc.)  – $7816.00 – call me and I can give you all the details or I can make one specifically for your needs. ~ Stan c 641.512.3395

Stan Hewitt – Hewitt’s Inertia Dyno’s – Go-Kart – Engine Builder

Contact:

Stan Hewitt

Owner of Hewitt Inertia Dynos

Precision in the shop takes seconds off on the track

Call today to get all the details….

c 641-512-3395

hewitts@netins.net

Bristow Iowa Go Karting Industry Career Engine Builder with decades of experience – G0 – Kart Tracks central Iowa Midwest – Go Kart Dynos – Small Engine DYngine Dynos – The Most Accurate Dyno you will find on the market – have questions want details call today WKA IKF World Karting Federation International Karting Federation National Championships Forest City Jamaica

HEWITT INERTIA DYNOS FOR SALE BOTH OF THESE HAVE 22 HP FLYWHEELS. ONE IS MY PERSONAL DYNO. ELCTRIC START, DIRECT DRIVE (THE MOST ACCURATE), 35MM BELT DRIVE, OLD STYLE OR “NEW” BLACK BOX II DATA SYSTEM. BUY UNPOWDERCOATED OR READY TO USE WHEN YOU UNCRATE. CAN COME WITH OR WITHOUT COMPUTER SYSTEM. I WILL NEED YOUR ZIP CODE TO FIGURE FREIGHT COST TO SHIP TO YOU? INCLUDES TRAINING BY PHONE OR I’LL BE ON EAST COAST NEXT WEEK (FEB 27TH THRU EARLY MARCH). ALL MY DYNOS CAN DYNO CLUTHES AND MEASURE ACCELERATION! DO MULTIPLE GRAPH OVERLAYS (UP TO 6) AND COMPARE COLUMS OF DATA SIDE BY SIDE. ACURACY TO 1/10TH OF HORSEPOWER! NEW SYSTEM CAN HAVE UP TO 9 CHANNELS FOR MULTIPLE SENSORS. QUESTIONS??? HOME/SHOP PHONE 1-641-775-3395 OR CELL 1-641-512-3395. E-MAIL HEWITTS@NETINS.NET- I WILL FAX OR E-MAIL EXACT QUOTE. YES, WE TAKE ALL 4 MAJORS CREDIT CARDS. YES, WE’RE WORKING ON LEASING!
THANKS-STAN HEWITT

Engine Dyno – Inertia Engine Dyno – Go-Kart Engine Builders

Looking for a dyno that cand do engines from 4 hp up to 100 or more.   I’ve done hundreds of  Inertia Dyno’s in the U.S. and a few internationally.  Engine Builders – If you are seriously looking to improve overall performance from your engines you must utizlie this technology.  All data systems come with a S.A.E. weather correction system. Most customers order head temperature and some use a exhaust sensor in the crankcase oil to make sure engine is up to temp. Air/fuel ratio is now available as an option.  Questions?  Want to purchase? Call me…

Stan Hewitt – Owner
c 641-512-3395
hewittdyno@gmail.com
twitter.com/InertiaDyno