The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil pump volume
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="DucATIRadeon" data-source="post: 178330" data-attributes="member: 5456"><p>made a setup for the oil pump to confirm (or correct) my reasoning.</p><p>1 mistake I made: 12.56 should be 1.256cc. (pi/4 x 1.5875cm^2 x 0.635cm = 1.2567cc).</p><p></p><p>primed the pump, emptied and dried out the beaker, and counted 100 squirts, 3x.</p><p>in all 3 times I get 125ml for every 100 squirts = 100 pump revolutions.</p><p>1 pump revolution is therefore 1.25ml = 1.25cc.</p><p>as the calculation above for ⅝" diameter and ¼" stroke gives 1.256cc displacement, the 1.25cc/revolution is pretty reliable figure if one would consider losses here and there.</p><p>this is for a standard oil pump. a 2-start oil pump will give exactly the same results per pump revolution, but as it is a 2-start pump, the volume per crank revolution is 2x that of a single start. feel free to perform your own test, it should be the same.</p><p></p><p>so: (1.25/15) x 2800rpm = 233cc/min which is very close to what was stated earlier, so if anything this test has confirmed 1) the volume measured and calculated support the previous stated volume/time by (DanQ?), and 2) the reasoning made about the volume of segments is inaccurate/untrue. sorry I don't know how else to put it, its not an attack!!</p><p></p><p>the setup in the vice. I used betray 6-1 as a fluid and as a nice colour to clearly visualise the level in the beaker. pump used is the old pump, still ok fit only the splines are worn somewhat. won't be using it in the rebuild (already have both single and double start pumps).</p><p>[ATTACH=full]61766[/ATTACH]</p><p></p><p>some silicone sealant to minimise the air leaks at the suction side</p><p>[ATTACH=full]61767[/ATTACH]</p><p></p><p>M8 bolt with ¼-26tpi (BSF?) threaded on the end as a means to rotate the pump. the M8 nut acts a locking nut so the bolt doesn't come loose while turning counter clockwise direction, same direction as the pump would rotate by the crank.</p><p>[ATTACH=full]61768[/ATTACH]</p></blockquote><p></p>
[QUOTE="DucATIRadeon, post: 178330, member: 5456"] made a setup for the oil pump to confirm (or correct) my reasoning. 1 mistake I made: 12.56 should be 1.256cc. (pi/4 x 1.5875cm^2 x 0.635cm = 1.2567cc). primed the pump, emptied and dried out the beaker, and counted 100 squirts, 3x. in all 3 times I get 125ml for every 100 squirts = 100 pump revolutions. 1 pump revolution is therefore 1.25ml = 1.25cc. as the calculation above for ⅝" diameter and ¼" stroke gives 1.256cc displacement, the 1.25cc/revolution is pretty reliable figure if one would consider losses here and there. this is for a standard oil pump. a 2-start oil pump will give exactly the same results per pump revolution, but as it is a 2-start pump, the volume per crank revolution is 2x that of a single start. feel free to perform your own test, it should be the same. so: (1.25/15) x 2800rpm = 233cc/min which is very close to what was stated earlier, so if anything this test has confirmed 1) the volume measured and calculated support the previous stated volume/time by (DanQ?), and 2) the reasoning made about the volume of segments is inaccurate/untrue. sorry I don't know how else to put it, its not an attack!! the setup in the vice. I used betray 6-1 as a fluid and as a nice colour to clearly visualise the level in the beaker. pump used is the old pump, still ok fit only the splines are worn somewhat. won't be using it in the rebuild (already have both single and double start pumps). [ATTACH type="full" alt="IMG_2399.JPG"]61766[/ATTACH] some silicone sealant to minimise the air leaks at the suction side [ATTACH type="full" alt="IMG_2400.JPG"]61767[/ATTACH] M8 bolt with ¼-26tpi (BSF?) threaded on the end as a means to rotate the pump. the M8 nut acts a locking nut so the bolt doesn't come loose while turning counter clockwise direction, same direction as the pump would rotate by the crank. [ATTACH type="full" alt="IMG_2401.JPG"]61768[/ATTACH] [/QUOTE]
Insert quotes…
Verification
The Series 'A' Rapide was known as the '********' Nightmare?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil pump volume
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top