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
Check your ESA nut
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="norvin998" data-source="post: 30885" data-attributes="member: 40"><p>All this happened about 4 1/2 years ago so I can't remember every detail. I can't remember removing lots of chopped spaghetti from the primary drive but I suppose its possible for the springs to escape if the nut loses its hex, then theres nothing holding the washer and ring plate in place. I renewed the primary chain as there was no way of knowing if any debris had got between the sprocket and the chain, I didn't want to risk a future snapped chain. </p><p>As far as I can remember, the hex and washer tighten against the cam sleeve. I think the problem happens because there is often an unsupported area of the nut between the end of the shaft and the hex portion of the nut (which bears all the pressure from the ESA springs). If the mainshaft was longer and reached flush with the end of the nut, this probably would not happen. Perhaps later shafts were longer, I don't know. </p><p>I think the problem could be metal fatigue, for peace of mind, the answer would be to replace an original nut with a new one.</p><p>Oh dear, I normally refrain from mentioning technical things as someone always corrects me. Ok, i've got my tin hat on - fire away. </p><p>Les.</p></blockquote><p></p>
[QUOTE="norvin998, post: 30885, member: 40"] All this happened about 4 1/2 years ago so I can't remember every detail. I can't remember removing lots of chopped spaghetti from the primary drive but I suppose its possible for the springs to escape if the nut loses its hex, then theres nothing holding the washer and ring plate in place. I renewed the primary chain as there was no way of knowing if any debris had got between the sprocket and the chain, I didn't want to risk a future snapped chain. As far as I can remember, the hex and washer tighten against the cam sleeve. I think the problem happens because there is often an unsupported area of the nut between the end of the shaft and the hex portion of the nut (which bears all the pressure from the ESA springs). If the mainshaft was longer and reached flush with the end of the nut, this probably would not happen. Perhaps later shafts were longer, I don't know. I think the problem could be metal fatigue, for peace of mind, the answer would be to replace an original nut with a new one. Oh dear, I normally refrain from mentioning technical things as someone always corrects me. Ok, i've got my tin hat on - fire away. Les. [/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
Check your ESA nut
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