Dr. Spock's Scooter Baby Oil Formula
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- burnt_toast
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Re: Dr. Spock's Scooter Baby Oil Formula
oiler wide open and couple of capfuls premix, she boogie
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Re: Dr. Spock's Scooter Baby Oil Formula
Sure! Our numbers ended up darn close. Nice workWheelman wrote:I guess several different spreadsheets would need to be configured, based upon bore size and the Root Assumption of Honda-san's baseline pump output. I'm sticking with mine of 32:1 because that's the magic formula for race engines, and a stock scooter at WOT probably approaches that level of output and oil demand. Knowing Honda's tendency to provide "more than enough" - though tempered by EPA pollution considerations.
Yeah, covering assumptions for bore sizes and oil pump output would result in several tables. Might only need to cover gross differences. For instance someone could look at the restriced Elite S non-variable oil pump output by starting at {guess as discussion example only => 50:1} oil pump output *then* derating.
You think I'm theoretically close with my 75:1 choice, Mouse?
- Wheelman-111
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Re: Dr. Spock's Scooter Baby Oil Formula
Greetings:
Mousewheels wrote:
I'm glad I'm theoretically close. We'll see how closely practice matches theory if I have to undergo a rectal pistonectomy.
Mousewheels wrote:
Well, I wrote that first half but anyone who claims I submitted that smart-sounding stuff in Bold is a dirty, stinkin' liar. I don't even understand most of it.Wheelman wrote:
I guess several different spreadsheets would need to be configured, based upon bore size and the Root Assumption of Honda-san's baseline pump output. I'm sticking with mine of 32:1 because that's the magic formula for race engines, and a stock scooter at WOT probably approaches that level of output and oil demand. Knowing Honda's tendency to provide "more than enough" - though tempered by EPA pollution considerations.
Yeah, covering assumptions for bore sizes and oil pump output would result in several tables. Might only need to cover gross differences. For instance someone could look at the restriced Elite S non-variable oil pump output by starting at {guess as discussion example only => 50:1} oil pump output *then* derating.
You think I'm theoretically close with my 75:1 choice, Mouse?
I'm glad I'm theoretically close. We'll see how closely practice matches theory if I have to undergo a rectal pistonectomy.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Re: Dr. Spock's Scooter Baby Oil Formula
Maybe some of us like to disable it totally, so we don't have to play the guessing game?
I'm pretty hard set in my oiling ways so I may have skipped over it, but are you guys calculating just on bore size? Pure conjecture, but I'd think a Corsa needs more oil than a Contessa, even though they are the same displacement. Since the RPM's on different aftermarket bore setups are always black magic, it would be hard to figure out the oil usage on different parts.
I'm pretty hard set in my oiling ways so I may have skipped over it, but are you guys calculating just on bore size? Pure conjecture, but I'd think a Corsa needs more oil than a Contessa, even though they are the same displacement. Since the RPM's on different aftermarket bore setups are always black magic, it would be hard to figure out the oil usage on different parts.
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- Wheelman-111
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Re: Dr. Spock's Scooter Baby Oil Formula
Greetings:
808 BMW makes a good point. Bore size is not the only determinant of lube needs. But remember the pump is RPM-dependent as well as throttle-dependent. Faster spin, faster squirt. Heat production is another factor, and here a red-hot tuner might want to increase the tank premix ratio whether using the pump or not. I'm just trying to work out how much to premix to get back to the 32:1 ratio once the bore size is increased.
808 BMW makes a good point. Bore size is not the only determinant of lube needs. But remember the pump is RPM-dependent as well as throttle-dependent. Faster spin, faster squirt. Heat production is another factor, and here a red-hot tuner might want to increase the tank premix ratio whether using the pump or not. I'm just trying to work out how much to premix to get back to the 32:1 ratio once the bore size is increased.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
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Re: Dr. Spock's Scooter Baby Oil Formula
No question - simpler and with some oils mandatory to pre-mix. It's just for various reasons some want the stock oil pump, but extra oil.Maybe some of us like to disable it totally, so we don't have to play the guessing game?
I agree . No attempt in the spreadsheet is made to calculate the change in bore to oil ratio. Nor suggest a given final ratio. That's up to the tuner - or someone following a tuner's good advice.but are you guys calculating just on bore size? Pure conjecture, but I'd think a Corsa needs more oil than a Contessa, even though they are the same displacement. Since the RPM's on different aftermarket bore setups are always black magic, it would be hard to figure out the oil usage on different parts.
In this thread, the formula presented is flexible. Output is within Mr Wheelman's assumptions as the example, not rule. My hope is others make their own assumptions and create their desired final 'oil pump' + 'pre-mix' ratio.
Re: Dr. Spock's Scooter Baby Oil Formula
I treat oil like I treat jets: Start with too much, and back off as much are you are comfortable.
In 2040 they say we're going away
We could never let them control
Hawaiian man, take back your hawaiian land
We could never let them control
Hawaiian man, take back your hawaiian land
- Wheelman-111
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Re: Dr. Spock's Scooter Baby Oil Formula
Greetings:
Good advice as always, Eight-Oh-Eight.
I'm doing the (~shudder~) Math here just so I don't end up riding "comfortably" into an engine seize.
So far, so good. Nik bore keeps seeming stronger, temps hover around 300.
Good advice as always, Eight-Oh-Eight.
I'm doing the (~shudder~) Math here just so I don't end up riding "comfortably" into an engine seize.
So far, so good. Nik bore keeps seeming stronger, temps hover around 300.
Wheelman-111
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH