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4 Stroke Bicycle Engines & Kits 4 stroke motorized bicycle engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine

Hoot Gearbox Success Story?


Discussion at Motorized Bicycle Engine Kit Forum in the 4 Stroke Bicycle Engines & Kits forum. After hearing all the horror stories about the Hoot Gearbox and promos of the expensive alternatives I'm curious if ...
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Old 06-25-2009, 09:17 AM
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Default Hoot Gearbox Success Story?

After hearing all the horror stories about the Hoot Gearbox and promos of the expensive alternatives I'm curious if ANYONE has got reasonable use out of one.

The 4-stroke is supposed to be more reliable than the HT kits but those gearboxes, even the Grubee, seem to fail so often it looks like the opposite is true. I have 4 of them in boxes and wondering if it's worth even attempting a stock install. I'd like to hear about success stories more than tales of woe. Anybody?
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Old 06-25-2009, 11:54 AM
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Default Re: Hoot Gearbox Success Story?

Wish I could say different, but I have never heard of a long term success story with the Hoot. The engine (HS-142) seems solid, but the gearbox seems to fail in many ways: teeth broken, clutch bell came apart, etc... It's sad because that engine deserves better and the price is right. I have heard no long term reports about the newer chain drive Hoot that came out a while ago. There do not seem to be many out there.

The Grubee is a horse of a different color. Some are loud, but break in and some experiments with what you put in the box for lube can take care of that. There are reports of some parts breakage, but most involve misuse of the engager....as in trying to use it as a clutch. It is not a clutch and should never be engaged above idle when the centrifugal clutch is engaged. Use it correctly and you will have no problems with the engager. One or 2 people I have heard of have had issues with the freewheel, but nothing that is not repairable inexpensively- and those reports are infrequent.

I, for one, have never had a problem with my Grubee Skyhawk Stage II in 2 years- no one...but I do not use the engager at all.
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Old 06-25-2009, 05:40 PM
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Default Re: Hoot Gearbox Success Story?

Yes, I think you were the fellow that inspired me to pick up a tube of the green grease. I may try and pack some of that into a Hoot and see what happens. I also think one guy tried reworking these but ended up starting the company that make one of the upgrade gearboxs so probably no good info there.

Do you know if the Hoot has an engager? I haven't opened any of the boxes yet.

Quote:
Originally Posted by HoughMade View Post
Wish I could say different, but I have never heard of a long term success story with the Hoot. The engine (HS-142) seems solid, but the gearbox seems to fail in many ways: teeth broken, clutch bell came apart, etc... It's sad because that engine deserves better and the price is right. I have heard no long term reports about the newer chain drive Hoot that came out a while ago. There do not seem to be many out there.

The Grubee is a horse of a different color. Some are loud, but break in and some experiments with what you put in the box for lube can take care of that. There are reports of some parts breakage, but most involve misuse of the engager....as in trying to use it as a clutch. It is not a clutch and should never be engaged above idle when the centrifugal clutch is engaged. Use it correctly and you will have no problems with the engager. One or 2 people I have heard of have had issues with the freewheel, but nothing that is not repairable inexpensively- and those reports are infrequent.

I, for one, have never had a problem with my Grubee Skyhawk Stage II in 2 years- no one...but I do not use the engager at all.
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Old 06-25-2009, 06:09 PM
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Default Re: Hoot Gearbox Success Story?

Hoot does not have the engager.

ocscully
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Old 06-26-2009, 04:41 PM
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Default Re: Hoot Gearbox Success Story?

Quote:
Originally Posted by ocscully View Post
Hoot does not have the engager.
ocscully
Thanks for that info.

So I'm guessing they might be a little more trouble at the stop lights. Maybe I'll open a box and slap one on a Magna just to see what the deal is with these Hoots. If it blows I'll try a CVT or something like Duanes setup.
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Old 06-26-2009, 04:46 PM
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Default Re: Hoot Gearbox Success Story?

You don't need to disengage anything unless you are pedalling for longer distances. I removed the cable from my Grubee and converted it to be permanently engaged.
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Old 06-26-2009, 05:53 PM
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Default Re: Hoot Gearbox Success Story?

Quote:
Originally Posted by HoughMade View Post
You don't need to disengage anything unless you are pedalling for longer distances. I removed the cable from my Grubee and converted it to be permanently engaged.
Oh. I though someone last week said they were disengaged when coming to a stop so bike would not keep clutch spinning. I think there is no freewheel so bike will keep clutch spinning?

Must admit not really experienced with these automatics. Always took them off for my weedwacker friction setups.
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Old 06-26-2009, 05:56 PM
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Default Re: Hoot Gearbox Success Story?

The Grubee has a freewheel on the gearbox, but since the clutch automatically disengages when you let off the throttle, nothing more than that is needed in normal riding.
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Old 06-27-2009, 08:24 AM
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Default Re: Hoot Gearbox Success Story?

Quote:
Originally Posted by HoughMade View Post
The Grubee has a freewheel on the gearbox, but since the clutch automatically disengages when you let off the throttle, nothing more than that is needed in normal riding.
I recall reading couple days ago about somebody having to pull in the engager everytime they stopped to prevent rear wheel from keeping clutch dragging. Several people responded that it got better after breakin. Maybe just static or I'm recalling wrong.
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Old 06-27-2009, 10:42 PM
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Default Re: Hoot Gearbox Success Story?

You are probably recalling correctly, but that is not the way iy should work. Whoever that is needs to lower the idle speed.
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