HONDA FL-250
77-80

 



" It's rumored that
the Honda FL-250
originally started
on the design
table as
a snowmobile
design"







 


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Ramjet's Tech

 

 

The 1977-80 FL-250 Odyssey
The birth of something very unique


1977-80 FL-250 Specifications

Engine: 248cc,  2 Stroke, Single piston
Bore and Stroke: 70mm x 64.4mm
Carburetor: 28mm Piston value
Ignition: Flywheel Magneto
Sparkplug: NGK BR9ES. 0.7 to 0.8mm
Starter: Pull Start, Recoil Type
Clutch: Automatic
Transmission: V-Belt Torque Converter
Length: 82.5 inches
Width: 48.4 inches
Height: 64.0 inches
Wheelbase: 56.5 inches
Fuel Capacity: 3.2 Gallons at 20 to 1 (Now 32 to1)
Tires: (F) 20 x 7.8  (R) 22 x 11 - 8
Rim Bolt Pattern: 8x8 3/100 (F) 8x8 3/100 (R)
Brakes: Single, Rear Mechanical Disc
Parking Brake: Cable actuated shoe and drum
Dry Weight: 407.9 pounds
Electrical - Light:  1977 to 1979 6 volt at 35 Watts
Electrical - Light:  1980 12 volt at 45 Watts
Color: Calypso Yellow with Silver rims
Turning Radius: (77-80): 17.4 feet
Speed: Reported up to 45 mph.
MSRP: $?
Average Used Price: $800 to $1400

1980 Brochure

Positives: Very easy to maintain. Great power and handling for this type of machine. Good ground clearance. Easy to get replacement parts for. Electric start is available for this engine from Goki. Because this series of Odyssey was so popular, a ton of aftermarket performance parts are available.

Negatives: Horrible suspension but makes up for that in entertainment. Early electrical system (points) can be a pain in the butt to set. Pull start can be a dream or nightmare depending on your mood. Sometimes the pull starter can rip your arm off.


What to Watch For: Watch for cracks in the frame just behind the seat. I don't know if it's a defect but I've seen three Odyssey's with cracks developing in this area. I think its cause may be aggressive jumping. Look for bent frame tubes and check the compression on the engine. It should read 128 pounds. If not, there's trouble inside.
Check for spark! Up to 1980, Odysseys had a point and condenser ignition system. Check to see if there is a good clean spark and that all electrical connections are good and tight. If there is no spark, it could spell trouble with the stator and that can set you back a lot of money. Look for a sheared or beat to death woodruff key where the flywheel is mounted. Odyssey electrical components are hard to find and are very expensive to purchase from Honda.


 

 

 

 

 

 

 

 

 

 

Ramjet's Ride Report

When you hop on this machine, it's unlike any ATV you've ever ridden. You really don't ride it, you drive it. It's extremely fast and can turn on a dime. It will also roll onto its side if you're not careful and control your speed and attack into a turn. I have a scar on my elbow to remind me how wicked this machine can be.

This Odyssey has an air cooled, 250cc, single piston, 2 cycle engine that powers an automatic
clutch/transmission system. It's a pretty flawless transmission. There's a generous power curve to tackle the most demanding terrain.

The fiberglass body tub and fenders do a good job of keeping mother nature off of you but you can still take a good soaking when you blast through a mud hole and a wave of cold water and mud wash over you from the front. That's what makes Odyssey's such a blast. You can get into the down and dirty with the best of them. The Odyssey has enough guts to pull you just about out of anything you get yourself into. I buried mine up to the seat in a swamp with other four wheelers and I was the only one to escape.

This Odyssey has an independent front suspension with small shocks that do a moderate job of absorbing the bumps and lumps on the trail. Where you are really punished is on the rear end. Honda had the theory that this Odyssey didn't need a rear suspension because of the balloon tires in the rear would absorb the majority of the shock. Well, Honda was wrong but I think I understand their reasoning. The pounding of the trail is transferred right to the fillings in your teeth. Try to take a jump and you'll bite your tongue! Sure, you can take a jump but the landing can be quite violent and you may bounce end over end. Short of not have reverse capabilities, it's probably on only thing about this Odyssey that you can complain about.

There appears to be little of note concerning mechanical changes in the Odyssey line from is debut in late 1976 to 1980. The only way to tell a model year is from the serial number on the rear part of the frame, a change of the color of the Odyssey decals and the position of the headlight. In 77 the headlight is mounted to the front bumper. In 1980, it moves to the top roll bar and Honda adds a heat shield to the back of a more padded seat. Also in 1980 Honda added rebound limiters to the rubber engine mounts to keep the engine from shaking so much while running and increased the output of the generator from 6 volt, 35 watt to 12V, 45 watt

All in all, it's a really fun machine, easy to maintain and still plenty of parts are available. I would hesitate to purchase another one.

Other Rider Reports
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