Chain drive

[Relax]

Just a thought,,,
Chain drive ,,,How much more  power would you get on the Valk with chain drive ?

[hubcapsc]

The orientation of the output shaft would make you go sideways 

-Mike

[Chrisj CMA]

Just a thought,,,
Chain drive ,,,How much more  power would you get on the Valk with chain drive ?

The difference is significant in racing terms but would be all but un noticeable to the butt Dino. I think it’s less than 5% difference but chain drive is a tad more efficient

[old2soon]

       My motocross M/Cs were chain drive. Some of my road M/Cs were chain drive. The motocross bikes were rather labor intensive. On my 2nd shafty with Phatt Ghurl. First was a Yamaha 920 Virago. Much prefer the shafty these days. And I realize most sport M/Cs are chain drive these days. How labor intensive are the newer chain drives on the newer M/Cs? RIDE SAFE.

[sandy]

I read an article on this subject. It stated chain lost 3% power. Belt lost 11%. Shaft lost 30%.

[Leathel]

Usually the crank is mounted east west so shaft has 2x 90deg change of angle.so power loss over chain

Valk has a north south crank so both chain & shaft need 1 change of angle......... so little gain with chain if any

[Relax]

I read an article on this subject. It stated chain lost 3% power. Belt lost 11%. Shaft lost 30%.

This is what I heard during a discussion here, and I thought:
That much!!! 30% !!??

I found it hard to believe.

Are there any measuring of the power on the Valk on the wheel and on the motor itself ?

[RonW]

You'd have to install a differential at the engine's output shaft for the same purpose as the Valk's pumpkin. I think same lost of power making the 90° bend.

[Relax]

I tried to read up on the subject, about loss of power with shaft & differential.
What I find is people claiming loss from 5-10-25 and 30%
I also find that (of course) differential are not constructed alike, so variations of loss are probably logic.
And, at last, I find the loss also can vary depending on speed and power, Higher Hp /torque. That also make sense, I guess

[old2soon]

      Show I attempt to stay up for on Sunday night is called Engine Power. The build an engine tell ya what they've done put it on the dyno then generally gits installed in the vehicle and run again through the transmission and differential to the rear wheels and they take another set of readings to come up with the power train loss of H P.  Usually done through a computer so runups do Not vary that much. And Yes mostly cages are done. RIDE SAFE.

[csj]

A thought out of the blue. Suppose you take out the valkyrie engine, turn it 90 degrees, which will present the driveshaft ready to have a sprocket put on. Then put a sprocket on the rear wheel, and of course the chain.

You'd have to plumb new much longer rad hoses, and you'd have to find a way to shift gears (I envision it, but it'll surely be difficult).

So, if you did this could you possibly get another 20 HP at the rear wheel.

[old2soon]

A thought out of the blue. Suppose you take out the valkyrie engine, turn it 90 degrees, which will present the driveshaft ready to have a sprocket put on. Then put a sprocket on the rear wheel, and of course the chain.

You'd have to plumb new much longer rad hoses, and you'd have to find a way to shift gears (I envision it, but it'll surely be difficult).

So, if you did this could you possibly get another 20 HP at the rear wheel.

          Air or electric shifter. Lotsa reengineering. How DEEP is yer pockets? RIDE SAFE.

[csj]

One of your favourite sayings is 'how fast do you want to spend'. Don't gotta be expensive.  I just wanna know if the idea is reasonable. Seems like john schmidt is doing low cost but effective engine trading right now. Would turning an engine 90° be so difficult?

[RonW]

..... Suppose you take out the valkyrie engine, turn it 90 degrees, which will present the driveshaft ready to have a sprocket put on. Then put a sprocket on the rear wheel, and of course the chain.

You'd have to plumb new much longer rad hoses, and you'd have to find a way to shift gears (I envision it, but it'll surely be difficult).

I dunno how balanced the engine will be sideways especially after (shifting the engine) to align the front sprocket to the rear sprocket. The starter motor will stick out a lot too.

[csj]

Sorta yes and sorta no, huh. If the balance was off, you could add some weight to the lighter side. The starter is truly a sore thumb. You'd hafta build a cage around it to protect it and the outside world. Otherwise, looks like it has a chance.

I s'pose it'd be kinda fugly. But 20 hp minimum should be possible.

[RonW]

Don't get me wrong, I'm not trying to discourage you from doing this. I just report, you decide.

[old2soon]

One of your favourite sayings is 'how fast do you want to spend'. Don't gotta be expensive.  I just wanna know if the idea is reasonable. Seems like john schmidt is doing low cost but effective engine trading right now. Would turning an engine 90° be so difficult?

         Throw enough money at most problems it can be solved Unless yer from the gubmint! RIDE SAFE.