Replacing Hoot Gearbox

GoldenMotor.com

wayne z

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Dec 5, 2010
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That is the exact samr box that comes with the BGF kit cet the BGF one has a longer output shaft to keep the engine centered between the pedals.

It has a single row #25 chain. I don;t expect it to last long woth chainlube or grease, so I modified mine to run woth oil bath.

The box that DAX sells is built with stronger casing and uses double row chain.
I thinjk the g-4 is better than the others, for longer reliable service. That,s the box I'll get if my chainbox wears out too soon
 

MotorBicycleRacing

Well-Known Member
Jul 28, 2010
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The eBay link is the identical unit that Dax sells
It has a double row chain
Yes, the quality is not that great
That is the exact samr box that comes with the BGF kit cet the BGF one has a longer output shaft to keep the engine centered between the pedals.

It has a single row #25 chain. I don;t expect it to last long woth chainlube or grease, so I modified mine to run woth oil bath.

The box that DAX sells is built with stronger casing and uses double row chain.
I thinjk the g-4 is better than the others, for longer reliable service. That,s the box I'll get if my chainbox wears out too soon
 

Smoothe

New Member
Sep 12, 2008
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Phoenix, AZ
This looks like the same box that Dax has, EXCEPT:

Duane has a ten-toothed sprocket that fits his box, Duane has a one-year warranty on his box, and, I can't call this ebay seller up on a Saturday afternoon (no speekie Chinese, I'm not saying that the seller is, but there's a darn-good chance) and get advice from someone who has 30 years in the business.

EZM has a new 2-speed gearbox in the works, and it's a double-chain box.

I figure I might get away with Duane's box for a few months while saving for an EZM gearbox. I've emailed both Bill and Duane to get advice. Bill said I would have to get at least a 56T sprocket for an EZM gearbox to work for me. Duane said I would get 35-40 MPH with a 40T sprocket (That came today, good job Piston). My fat whizzer tank came today too, it's very cool..wee.
 

wayne z

Active Member
Dec 5, 2010
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louisiana
I wouldn't try the 40 tooth . Mine came with a 48 tooth and it is WAY overgeard at around 14.5-1.

I can hold 42 mph at 1/2 throttle , full throttle doesn't increase mph from there. The lil motor just doesnt have enough power to rev any higher at that ratio.
 

Smoothe

New Member
Sep 12, 2008
201
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Phoenix, AZ
Pirate Cycles has a 56T sprocket that'll work with the Manic Mechanic hub adapter, that's what I'll run with. The adapter and sprocket that came yesterday are masterpieces. Jim does excellent work.
 

wayne z

Active Member
Dec 5, 2010
1,743
5
38
louisiana
Pirate Cycles has a 56T sprocket that'll work with the Manic Mechanic hub adapter, that's what I'll run with. The adapter and sprocket that came yesterday are masterpieces. Jim does excellent work.
I changed my 48 to the 56 yesterday. Top speed is just as I expected, about the same at around 40mph (Hall windspeed indicator)
It gats that speed a lot faster, and can climb moderate hills easily now.
Still feels a little tall geared so I use a few pedal strokes from a level dead stop.

Did 2nd oil change,2hrs run time(hard). Still a lotta aluminum in the oil.

Chainbox oil didn't show much metal but smelled and looked burnt.

Gotta check, oil prolly getting into clutch compartment thru chainbox bearing seals.
Might try a drain hole in the clutch compartment and better bearing with better seals, Prolly not seals but just sheilded bearings in there.

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