1UZFE Bike

[Lextreme II]

Hey Gang,

For the pass five to ten years, the custom motorcycle industry has been growing. There are more television shows about custom motorcycle then ever before. Have anyone been looking in the 1UZFE power bike? That would be interesting....... Dodge made a prototype four wheels bike using the Viper V10 motor. Its called the Tomahawk. I think that bike is rated at 500-550 bhp with monsterous torque. Do you think we can build a motorcycle with 1UZFE along with two T3 snails?

That would be BBBBAAAADDDDDD!

 

[Zuffen]

The Boss Hoss runs an LS1 (longitudinally) and is aparently a pig to ride. I would think opening the throttle too quickly would just about roll you on your side with the torgue.

The width of the engine could be a problem.

If you mounted the engine across the bike ( remember it is no longer then it is wide) you would have a place for your snails and the torque could be used to your advantage in transferring weght to the rear when you accelarated.

Devising a transmission would be interesting. You would need to drive aft to a transmission/clutch arrangement then some sort of chain or belt drive (a 3" supercharger belt woulld be the minimum) to the rear.

I would guess you would only need one or two gears.

If you got the centre of gravity low enough it could handle.

Would need a Crown mid sump and cut the legs off the back.

To take the drive off the back of the engine you could use something like a "silent chain" as used in 4x4 transfer cases. These chains must handle huge torque as when in 1st gear the effective torque they transmit must be enormous. You would need to factor in the added length for the silent chain so the engine would be at least 800mm across.

The more you look at it the more plausible the idea becomes.

 

[Pro]

who says it has to handle...?

 

[Lextreme II]

i think the hardest thing would be the drivetrain. If we mount the motor front to rear like the rear wheel drive cars. How would the gears be connected. If we install the motor sideway. I can imagine the belt systems.

 

[qca]

interesting too say the least
firstly imagine engine east west with clutch and a primary chain drive gear it too idle at 500rpm 15kph (10 mph)
at 7000 rpm it would be doing 210 kph (108 ? mph)
it would be alot more scary than my old two stroke.
it's quick enough 11.05 @ 99mph. 1/4 mile.

 

[Lextreme II]

For the look of it. I would like to have the traditional mount. Front and back. However, i think the side mount (east-west) would be much easier.

 

[Zuffen]

Mounting it longitudinally and using only 1 gear is easier than transversly.

A good starting point would be looking at how Boss Hoss do their transmission.

I think you would run a standard clutch to a short shaft that runs into a Z drive gearbox. This box would take the drive in the front and pass it through a set of 3 gears to have the power come out the rear but 200mm (8") to the side. This would allow you to run a tailshaft and try adapting a BMW or Honda rear ead onto it. All BBMW use a drive shaft and crown wheel/pinion steup in lieu of a chain. The big Honda Goldwing does the same.

Whilst neither bike produces the torque of the 1UZ but it is really a matter of using what you can get and strenghtening the parts that fail. I think there would be few failures.

You will notice I have not allowed for a neutral gear which would be a handy feature. A dog clutch arangement could be incorporated in the Z drive.

 

[skid]

Any bike like this would be a PIG!

Sure it would be an interesting 'art' piece to look bling on a stand but to ride? No way.

Mounted North South (ala Boss Hoss) would be best for transfering the drive but the torque when you reved the motor at standstill and the reciprocating gyroscopic mass would quite literally put you on your side! However you could have half a chance of going around a corner with a few degrees of lean as the 'V' shape would allow some ground clearance. This would be my favoured route for an 'art project' as most aesthetically pleasing.

Mounted East West would eliminate more of these sideways forces but to attach the drive belt would make it even wider, and then unless you had something like a 500mm or 700mm wide rear tyre the belt would not be able to attach to the rear wheel. As for going around a corner? When you ride a bike you don't steer it, you lean it and actually push the bars the other way to get the bike to ride on the tyre side wall (hence the shape of bike tyres). With the East West layout you would ground out the block at either side within seconds. Added to that any grounding out of a solid part of a bike (excluding hinged foot pegs) could lift some of the weight on the tyres and therefore loose you grip. Instant visit direct to the scene of an accident!

Then you've got to think about bandy leg syndrome as you struggled to straddle the beast!

M

 

[Zuffen]

Skid,

I have a couple of clients who own Boss Hoss bikes and they say they handle better than expected.

When talking east-west mounting don't forget about bikes like the Honda CBX 6 cylinder in line. Pretty wide engie.

Look at a 1UZ from the side and the front of the engine would have miles of ground clearance. The rear would be a problem but you couldn't mount the engine in the middle of the frame as you would need to shove it toward the water pump end to balance it due to the weight of the flywheel/clutch etc.

I think it would be a good design excercise to see if it could be done. If the engine was canted forward you could get your legs behind the rear bank and get out of the wind. Think of it a bike you could ride in the UK and not freeze. Your feet may get fried.

 

[Pro]

why would you need a chain/belt drive? what about a shaft drive - effectively you could use a small "differential" of gears to move the shaft from centre to side and retrofit up a BMW / Yamaha shaft drive system.

 

[skid]

Yeah I agree with you both to a point.

However the Boss Hoss slow reving Yank Iron might just burble along but the reviews I've read (admit I've never ridden) treat it as a joke and a play thing, but not a bike you would want to go wide open throttle or attempt a turning circle any smaller than an F15's!

Nowww...... after writting my email I did sit back and ponder, then drew several sketches and fantisised over my next project.... 2010 maybe???

So how about North South solid mounted, alternater back to front and up high perhaps hidden in a tubular polished aluminium twin spar frame, wide front and rear sections with a hubless see through rear and twin rim mounted front brakes! Then add a very strong 3 speed manual box adapted to mount transversely across the frame and inboard enough to run a belt drive. Give it a minimalist no bling touch (ala Excile Bikes-LA), a huge carbon fibre tank with a missing rectangular centre section with 8 polished alloy trumpets on 4 down draught carbs sticking up through it. Add big curly polished banana exhausts out the sides exiting as 4 underneath!

Yum!

Minimalist porn!

ha ha ha ha ha ha

 

[Zuffen]

Skid,

Maybe we need to build two bikes!

One East-West the other North-South.

I'll go for the E/W as you could open the throttle fully without falling over. Of course you may land on you backside with the (heavy) bike on top of you.

A thought? On an E/W set-up could you use a Camry or Avalon auto by changing/modifying the belhousing. Weld the diff and you have the drive in the right place.

 

[Pro]

A thought? On an E/W set-up could you use a Camry or Avalon auto by changing/modifying the belhousing. Weld the diff and you have the drive in the right place.

that's a wiiiiiiiiiiiiiiiiide bike there...!

 

[Lextreme II]

Hey was can put in a 2jz, its much skinnier..... we can put between our legs....

 

[skid]

Hmmmmmm.......

Just don't like the idea of an auto bike. Still think it would sound best double de clutching and blipping of the throttle between changes on a manual. Coooool!

Aesthetically, North South, but don't ask me to ride the bastard!

Perhaps with your East West you could fit rear wheelie bars though I doubt the tyre would grip enough to actually supply the leverage to lift the weight of the engine out front. However you would probably be sitting in a cloud and puddle of molten rubber! ha ha
Cheers
M

 

[Zuffen]

Skid,

Back in 1969 (when I was a pimply faced kid) I saw a guy called Wild Bill Shusberry? from California on a supercherged V8 powered drag bike.

It had a 10" slick and didn't seem to suffer traction problems.

The bike had a stand that rotated under the rear wheel and he would rock the bike back and forth until it tripped off the stand (hopefully allways going forward) and set off down the strip with the front wheel held high. Looked cool but may be a little obvious at the traffic lights/

If you don't like an auto you could use the Camry tranfer case and adapt a tough 3 speed manual to it and only use two gears. You could graft a trwin row sproket onto the box's output shaft and run twin chains (to handle the torque) or a gilmer drive like a hardly dangerous.

pro240,

The engine is only 700 mm long but could be shortened by 75mm with the removal odf some garbage off the front like the crank pulley. Check out how wide a CBX1000 is.

You wouldn't want to put your feet either side of the engine, you'd want them behind it like an opposed BMW.