The HF Greyhound Challenge

[MotorbikeMike]

Hello, I have read much about many people's ideas about the HF, and even going so far as to call it a "Honda50 Killer", that I am now convinced that the Motor Bicycling community does not know the necessary details, nor have all of the needed experience to recognize which engine will perform better in a Single-Speed Motor Bicycle.

I will now throw my hat into the ring.

I have a HondaGX50HA STOCK in a 26" middleweight bicycle {it will soon be in my new to me (used) Electra} current tires are 26x2 or so Ching Shin City travelers. Primary reduction is first generation Silent Power drive.

I will make available for sale, to anyone within reasonable driving distance from me in Sacramento the following items for use in a build to see on the pavement the true abilities of the Greyhound 79, as compared to Honda gx50 on comparable bikes, similar tires, similar or same drivetrains, and ridden on the same roads.

I can sell you tank with petcock and cap, tires, throttle, Q-matic drive, wide 3-piece crankset, flexpipe, 44, 48, 50 or 56 tooth rear sprocket set, I will help you make an exhaust manifold to fit the HF if you need that assistance, I may even have an old frame to sell, or can get you a new bike if needed! I normally have most of the parts in stock to build or rebuild Cruiser bikes.

I have a motor mount plan that is easy and works well, tho I do not have any HF motor mounts.

The goal here would be to ride stock engines, and do a road test. The only allowable mods to the engine are air cleaner, and exhaust pipe, no porting, no disassembly of engine, pure stock.

No Shiftkits, No mods, just pure stock runs to prove on the road what I already know to be true, and that is a 3600 rpm 79cc 2.5 hp engine, under same circumstances, will NOT outperform a 7700 rpm 2.1 hp 50cc Honda. The proof of the pudding will be when the Greyhound runs out of RPM available and the Honda zips by!

Who wants to play? I can get enough parts together that we could have several Greyhounds for the little Honda to outrun! I do also have HS 50 bike which is an old middleweight and runs well enough to prove it too has what it takes!

Looking forward to meeting my new competitors,

Mike

[jbcruisin]

These 4 stroke threads get to be more fun everyday. Looking forward to the outcome of this.
Jay

[glacknoid]

All I can say is WOW.

[Felton]

If you mean same gear ratio when you say same drive train, then it wouldn't be a fair fight. I also think you should let whomever takes you up on the offer to disconect the governor, reason being I have not seen one person keep it connected.

[glacknoid]

Will the honda have the gov intact as well, limiting it to 7000 rpms, since there are no mods allowed? When you say similar or same drive trains, are you talking make/model or overall ratio being the same.

[HoughMade]

I would love to see this challenge accepted...and BTW- what's that Greyhound weigh?

[glacknoid]

About 20lbs without the attached tank and muffler. So like 8 lbs more than the honda.

[RusticoRay]

I wish I lived near Sacramento not to build a HF for a challenge just to come by and build a few bikes. I already have my answer in practical application. Put both motors on Sun Atlas 26" Cruiser, Q-Matic, 2.125 tires and a 56 tooth sprocket.The HF with gov removed and flex pipe had plenty of grunt and could pull a house but would not go over 26-28 mph. My weight is around 160lbs. I put the HS motor on my bike because I felt if I could get a cruising speed of 30mph without the motor being peeked I would be very happy. The bike does 32-34MPH and if I lean down I can get another five miles a hour. It cruises at 30 and is at 6500rpm maybe a little more. I dont have a tach or a speedometer thats calibrated just a cateye speedo and a tach, hour counter you attatch to a plug wire. The HF went on a push trailer with a Maxtorque clutch and a 10 inch tire. It would run at 20mph up hill until you run out of fuel and cruise at 29mph again with a cateye on a streetbike.

[Quenton Guenther]

Wish I were in CA to watch the fun.

Have fun,

[jbcruisin]

They won't believe you Ray. they're in denial.