HF engine tips and tricks
- Thread starter Dan
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I hope you will re consider Wayne, I enjoy your insites and posts. Give it another go, They move on like ants as soon as the food is gone, Watch, sale OK and left. Would enjoy your thoughts. They go away pretty soon.
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Love an respect you Bill, I only Correct only when you are wrong. Ya hurt my feelings when I wrote ya about the eye thing. All good I gueses-s. will PM ya,
Oh your wrong nananananananana
Really, arage to dis agree
Oh your wrong nananananananana
Really, arage to dis agree
I have followed this thread and have enjoyed it. There is a bunch of good friendly incite on this creation. Harbor Freight is just down the street over here. Dan you got me convinced I want to try a 4 smoke. That HF motor has been looking attractive.
I can't figure out what I like more . Building these MB's , planning them or just plain dreaming about them
Riding them too!!! Its that smile that it puts on my face. I know why a dog sticks its head out the window now.
I can smell laundry , food, spring, fall, plants in bloom, sight , sound, 360 degree view a whole bunch of sence's come up. You just can't get that from a car.
Also there is another thrill. It is the gear head thrill. Will this pig fall apart out from under me thrill. Always comes up when I know I driving it too fast.
That creeping nagging feeling when ya just wanna see what it will do!
I can't figure out what I like more . Building these MB's , planning them or just plain dreaming about them
Riding them too!!! Its that smile that it puts on my face. I know why a dog sticks its head out the window now.
I can smell laundry , food, spring, fall, plants in bloom, sight , sound, 360 degree view a whole bunch of sence's come up. You just can't get that from a car.
Also there is another thrill. It is the gear head thrill. Will this pig fall apart out from under me thrill. Always comes up when I know I driving it too fast.
That creeping nagging feeling when ya just wanna see what it will do!
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Would you use the same reduction for a Honda 50cc that turns 7.800 rpm's?
I hear ya GH. They are never done and have to have one in the works. A while back I stoped for a smoke and there was this weed with a huge and odd flower on it. I took a picture and wanted to start a thread about sights, sounds and smells you only get when on a MB. Then I noticed my rear wheel was tacoed and spent 20 mins waiting for a ride and kicking my wheel.I have followed this thread and have enjoyed it. There is a bunch of good friendly incite on this creation. Harbor Freight is just down the street over here. Dan you got me convinced I want to try a 4 smoke. That HF motor has been looking attractive.
I can't figure out what I like more . Building these MB's , planning them or just plain dreaming about them
Riding them too!!! Its that smile that it puts on my face. I know why a dog sticks its head out the window now.
I can smell laundry , food, spring, fall, plants in bloom, sight , sound, 360 degree view a whole bunch of sence's come up. You just can't get that from a car.
Also there is another thrill. It is the gear head thrill. Will this pig fall apart out from under me thrill. Always comes up when I know I driving it too fast.
That creeping nagging feeling when ya just wanna see what it will do!
Was just at the machine shop getting a shaft made for the American. The guy stopped work on a $4,000 part to do my thing 'cause "it's just cool" Snork. I made my own on a drill press and worked fine if you enjoy wibble wobble. Really does this crazy thing you can feel threw out the bike.
Back OT so the OP will stop cursing me. Any one else have problems with the HF and humidity? Engine 1, ya could tell if it was gonna rain with hard starting. Engine 2 is even worse. My Honda is a lil like that but no where near as bad as HF2. Just wondering. It starts, just not on the first pull.
LOL Sam; YouTube - The Smelly Cat Song
Hi curtisfox,
We designed the drive to be adaptable to a wide range of motors. The original prototype was installed on a 4-stroke HS 142 49 CC motor [2000 to 8000 RPM range] and was tested in 2008 at Lewes, DE. Because of design it is easy to alter the ratios needed for the low RPM or high RPM motors. Last year at Lewes, DE., I had the honor of working with Jim, Chris, & Ray using our drive on the HF 79 CC 4-stroke motors. Of the 2 bikes sporting the HF motor different paths were taken concerning drive ratios. I think Jim & Chris used an adjustable drive pulley whereas Ray had a fixed pulley.
By mounting the clutch at the rear of the drive it is easy [and cheap] to change the size of the front pulley to arrive at the desired ratios for different style motors.
On the higher RPM motors we offer primary ratios in 2.6 X 1, 2.7 X 1, and 2.9 X 1 and a 5.6 X 1 secondary ratio. On the slower or narrow RPM motors the primary drive ratio is either 2.06 X 1 or 2.22 X 1. The "tic" speed of the clutch can be dialed in by using optional weights and or springs.
During testing we discovered the HF motor works best with a 12 X 1 ratio, and the HS or Honda 49 CC motors do very well at 15.5 X 1.
HF motor 12 X 1 ratio @ 4500 = 29 MPH
Honda or HS 15.5 X 1 ratio @ 6800 = 34 MPH
Hope this information is helpful.
Have fun,
We designed the drive to be adaptable to a wide range of motors. The original prototype was installed on a 4-stroke HS 142 49 CC motor [2000 to 8000 RPM range] and was tested in 2008 at Lewes, DE. Because of design it is easy to alter the ratios needed for the low RPM or high RPM motors. Last year at Lewes, DE., I had the honor of working with Jim, Chris, & Ray using our drive on the HF 79 CC 4-stroke motors. Of the 2 bikes sporting the HF motor different paths were taken concerning drive ratios. I think Jim & Chris used an adjustable drive pulley whereas Ray had a fixed pulley.
By mounting the clutch at the rear of the drive it is easy [and cheap] to change the size of the front pulley to arrive at the desired ratios for different style motors.
On the higher RPM motors we offer primary ratios in 2.6 X 1, 2.7 X 1, and 2.9 X 1 and a 5.6 X 1 secondary ratio. On the slower or narrow RPM motors the primary drive ratio is either 2.06 X 1 or 2.22 X 1. The "tic" speed of the clutch can be dialed in by using optional weights and or springs.
During testing we discovered the HF motor works best with a 12 X 1 ratio, and the HS or Honda 49 CC motors do very well at 15.5 X 1.
HF motor 12 X 1 ratio @ 4500 = 29 MPH
Honda or HS 15.5 X 1 ratio @ 6800 = 34 MPH
Hope this information is helpful.
Have fun,
THANK YOU! What belt do use 1/2 inch B ,or narrower? Also what rpm engagement clutch should one start with? This will be a big help to this old Fox
Hi curtisfox,
Max Torque doesn't offer a clutch to operate correctly on the crankshaft of the 49 CC HS or Honda motors. I have made changes to thier design to make them work, however it is difficult. Some time ago, Jim at Max Torque designed a drive for the hi RPM motors, but he reduced the clutch speed to make it work. He used a chain drive from the crankshaft to the clutch and mounted a shaft through the mounting plate for the final output.
The "tic" speed is about 600 RPMs below total engagement. By moving the clutch to the rear it is easily possible to use the same style clutch and alter the primary ratios to fall below the required "tic" speed.
We supply 5 different belt styles to "dial" in the ratios. .375", .4375" .468", .5", and .511".
During testing we found FHP belts [ 3L, 4L, or 5L] stretched too much and we only use industrial or automotive belts.
Max Torque has special springs, and weights to alter the "tic" and engagement speeds, but not enough range to overcome the high idle speeds over 2200 RPMs. As long as you can reduce the clutch speed between 2 X 1 to 3 X 1 you can easily tune in a Max Torque clutch. On lower RPM motors you can put the clutch on the crankshaft, but remember there is far more vibration at higher RPMs, and the motor must spin the weight at higher RPMs.
I think it takes more power to spin the heavy clutch at higher speeds, but a few don't agree.
If you need the actual belt numbers feel free to PM me.
Have fun,
Max Torque doesn't offer a clutch to operate correctly on the crankshaft of the 49 CC HS or Honda motors. I have made changes to thier design to make them work, however it is difficult. Some time ago, Jim at Max Torque designed a drive for the hi RPM motors, but he reduced the clutch speed to make it work. He used a chain drive from the crankshaft to the clutch and mounted a shaft through the mounting plate for the final output.
The "tic" speed is about 600 RPMs below total engagement. By moving the clutch to the rear it is easily possible to use the same style clutch and alter the primary ratios to fall below the required "tic" speed.
We supply 5 different belt styles to "dial" in the ratios. .375", .4375" .468", .5", and .511".
During testing we found FHP belts [ 3L, 4L, or 5L] stretched too much and we only use industrial or automotive belts.
Max Torque has special springs, and weights to alter the "tic" and engagement speeds, but not enough range to overcome the high idle speeds over 2200 RPMs. As long as you can reduce the clutch speed between 2 X 1 to 3 X 1 you can easily tune in a Max Torque clutch. On lower RPM motors you can put the clutch on the crankshaft, but remember there is far more vibration at higher RPMs, and the motor must spin the weight at higher RPMs.
I think it takes more power to spin the heavy clutch at higher speeds, but a few don't agree.
If you need the actual belt numbers feel free to PM me.
Have fun,
AWESOME!!!
THANK YOU If what I have don't work out I know what to do now.
WOW! Not sure whether to offer some of you guys a saucer of milk or what.
Shameless self promotion! Hijacking! Bitter little men! All in a thread that started somewhere else completely.
Shameless self promotion! Hijacking! Bitter little men! All in a thread that started somewhere else completely.
Yeah, so knock off the BS back and forth crap, and keep this thread on topic, or it will close and be gone.
This forum is not for petty inter-rival gang warfare between transmission/gearbox/actuator/whatevers.
Final warning.
This forum is not for petty inter-rival gang warfare between transmission/gearbox/actuator/whatevers.
Final warning.
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