Q-Matic Pacesetter drive system

Quenton Guenther

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What If someone made a drive that can be custom tuned to each riders needs?

What if someone made a drive that fit hundreds of different styles & types of motors?

What if someone made a drive that used mostly american made parts and assembled in the USA?

What if someone made a drive, that if parts were ever needed, they could be purchased at most hardware or auto parts stores?

What if someone made a drive and tested it for hundreds of hours to find the maximum performance curve?

Guess what! It is called the Q-Matic Pacesetter and we have shipped dozens earlier this month.

The reason it is called the Q-Matic Pacesetter, is because it can be set for the individual owner's riding style, or "set the pace". The new drive sytem doesn't change ratios on the fly [CVT], but allows the owner to pre-set the ratios.

The following chart explains a few of the possible settings and is based on using a 56 tooth rear sprocket and is the overall final ratio.
AX Final 15 Final
8.671 9.105
9.432 9.644
9.498 9.716
9.775 10.015
9.861 10.084
10.067 10.334
10.378 10.672
10.414 10.681
10.487 10.761
10.709 11.034
10.793 11.092
11.062 11.421
11.116 11.445
11.438 11.836
11.459 11.819
11.825 12.221
11.841 12.283
12.214 12.649
12.274 12.765
12.629 13.109
12.739 13.285
12.801 13.354
13.075 13.604
13.241 13.851
13.553 14.137
14.066 14.714
14.133 14.789
14.529 15.317 [stock Q-Matic]
14.621 15.341
14.681 15.482
16.043 16.965

The primary ratio can be changed in less that 5 minuites and doesn't require messing with a greasy chain or sprockets. The changes are made with either exchanging the primary pulley size or using the adjustable primary pulley.

To give a an example of just how adjustable the drive can be, I will give information on my new 50 CC "Drag" bike. The bike will be tested with 2 different setting. One will be the Roller Road [DYNO] and the other setup will be used on the Dirt Drag Test Track. Within a matter of minuites the drive can be converted to race on 150 foot track for short fast runs [16.965 X 1 ratio], and then setup for top speed on the DYNO [9.716 X 1].

All the new drive systems will include the new modular brackets, and a 3 piece front bracket for instant belt or ratio changes. As always, all current parts fit all versions of the Q-Matic drive and means older drives can be updated to the latest version.

This drive is so advanced, there just isn't enough space to explain all the features, however this drive fits motors from 1.5 HP to 30 HP, and is most commonly used on the HS 142, Honda 50, HF 79 & 99CC, B & S 2.5 to 3.5 HP, Lifan, Clinton, Tecumsah, and even electric start Whizzers.

The new drive can also be installed on the HS motors with the short tapered shaft [Hoot], the current HS motors with the charging system [I have one of the charging motors on my Dirt Drag test bike]. We make adapters [crankshaft extension] for the odd size shafts [14.8 MM, tapered, straight shaft no keyway, etc]

Have fun,
 

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I was originally going to build a 4-stroke with an EZM, but I had a mechanical itch I needed to scratch because I learned I could just tune and mess with two-strokes ad infinitum. They are really fun engines to play with. I know you have to understand that, Quenton.

I gotta say, I've seen you catch scatos here and on the other forum because you are "selling," and you are "biased." Still, I know how to read between the lines on the subject of "bias." I know the difference between pride and jealousy.

Lots of people have good ideas. Some act on them and build something. A few test and test. Even fewer send their prototypes out to have others test them. Almost none follow that up with the investment and planning to manufacture and distribute. That last is huge. I think you've probably done as much (or more) than anyone around in making four-strokes viable on motorized bicycles in a mass way. This latest design really solves a great problem. Well done!

Sigh. If only I could find a little four-stroke engine that had the cool look of, oh, I don't know, a Triumph thumper or some of those turn of the century proto-Harley type motors.

Cheers,
Rick
 
The reason it is called the Q-Matic Pacesetter, is because it can be set for the individual owner's riding style, or "set the pace". The new drive sytem doesn't change ratios on the fly [CVT], but allows the owner to pre-set the ratios.

The following chart explains a few of the possible settings and is based on using a 56 tooth rear sprocket and is the overall final ratio.
AX Final 15 Final
8.671 9.105
9.432 9.644
9.498 9.716
9.775 10.015
9.861 10.084
10.067 10.334
10.378 10.672
10.414 10.681
10.487 10.761
10.709 11.034
10.793 11.092
11.062 11.421
11.116 11.445
11.438 11.836
11.459 11.819
11.825 12.221
11.841 12.283
12.214 12.649
12.274 12.765
12.629 13.109
12.739 13.285
12.801 13.354
13.075 13.604
13.241 13.851
13.553 14.137
14.066 14.714
14.133 14.789
14.529 15.317 [stock Q-Matic]
14.621 15.341
14.681 15.482
16.043 16.965

The primary ratio can be changed in less that 5 minuites and doesn't require messing with a greasy chain or sprockets. The changes are made with either exchanging the primary pulley size or using the adjustable primary pulley.

Referencing the ratios above and using the recommended 56-tooth sprocket, what is changed to obtain the extremes, 9.105 and 16.965?
 
Both primary and secondary drive pulleys and from 1/2" AX series belt to automotive wedge belt 15/32".
As an example:
2" primary pulley
5.45" secondary pulley
15 series belt
equals 3.0294 X 1 times 5.6 [56 tooth rear sprocket] = 16.965 X 1

another example is the stock Q-Matic ratio:
2" primary pulley
4.95" secondary pulley
15 series belt
equals 2.73529 X 1 times 5.6 = 15.317624 X 1

yet another example is using the AX series belt

2" primary pulley
5.45" secondary pulley
AX series belt
equals 2.8648 X 1 times 5.6 = 16.04324 X 1

Have fun,
 
Too bad there's not a pulley with 2 sizes to it. let's say 1 3/4 on the engine side. Then when it moves out its 2 1/8.

Use a "Throw Out Bearing" "like on a manual clutch with a taper for the belt.

And a regular click shifter on the handle bars. You could use a 6 speed clicker for extra play.

Just an idea.
 
Both primary and secondary drive pulleys and from 1/2" AX series belt to automotive wedge belt 15/32".
As an example:
2" primary pulley
5.45" secondary pulley
15 series belt
equals 3.0294 X 1 times 5.6 [56 tooth rear sprocket] = 16.965 X 1

another example is the stock Q-Matic ratio:
2" primary pulley
4.95" secondary pulley
15 series belt
equals 2.73529 X 1 times 5.6 = 15.317624 X 1

yet another example is using the AX series belt

2" primary pulley
5.45" secondary pulley
AX series belt
equals 2.8648 X 1 times 5.6 = 16.04324 X 1

Have fun,
thanks for the explanation and tips.

when looking for the best acceleration, the 16.04 is the ideal ratio...correct? if so, do you have the 5.45" secondary pulley and proper AX belt available?
 
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