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
Twin Points Ignition
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="Pushrod Twin" data-source="post: 137626" data-attributes="member: 340"><p>Having got that far, I couldn't stop myself, I needed to know if it would make sparks. So with regard to the above discussion around coils & condensers, I chose to use something I am well familiar with, a set of old Guzzi coils and a matching pair of new condensers. </p><p>Interestingly, I havent found a published rating for Guzzi coils, however, in the V7 Sport Testing Data & Specifications chapter, the coils primary side should test at 3.35 +/- 6% Ohms, does that make them a 3 Ohm coil? The other thing which I find interesting regarding coil resistance for points Vs electronic systems is; we Guzzi owners use OEM points spec coils attached to electronic Dyna ignition systems with impunity, and to my knowledge, have no failures. </p><p>So, grabbed a reject battery and cobbled together some wires then set it all in the lathe. Nothing! Battery measured 7.9V,and with a load I suspect that was a whole lot less. Attached a charger and got 14V, bingo, sparks turning the chuck by hand. That was followed by running at 34 RPM, (17 crank RPM) good sparks. </p><p>Next step, hold my beer while I set up a degree wheel and strobe light and see if we can check the auto advance.</p></blockquote><p></p>
[QUOTE="Pushrod Twin, post: 137626, member: 340"] Having got that far, I couldn't stop myself, I needed to know if it would make sparks. So with regard to the above discussion around coils & condensers, I chose to use something I am well familiar with, a set of old Guzzi coils and a matching pair of new condensers. Interestingly, I havent found a published rating for Guzzi coils, however, in the V7 Sport Testing Data & Specifications chapter, the coils primary side should test at 3.35 +/- 6% Ohms, does that make them a 3 Ohm coil? The other thing which I find interesting regarding coil resistance for points Vs electronic systems is; we Guzzi owners use OEM points spec coils attached to electronic Dyna ignition systems with impunity, and to my knowledge, have no failures. So, grabbed a reject battery and cobbled together some wires then set it all in the lathe. Nothing! Battery measured 7.9V,and with a load I suspect that was a whole lot less. Attached a charger and got 14V, bingo, sparks turning the chuck by hand. That was followed by running at 34 RPM, (17 crank RPM) good sparks. Next step, hold my beer while I set up a degree wheel and strobe light and see if we can check the auto advance. [/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
Twin Points Ignition
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