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
Front EXH follower spindle on the piss ET30/3 ( a cure)
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="oexing" data-source="post: 121476" data-attributes="member: 1493"><p>Had to do all shafts there certainly on butchered Argentinian B-Raps , some with individual sizes, but found a face reamer at a useful size for restoring good holes. The obsolete imp. thread on the new front ex follower spindle I retained, just made an oversize shaft on it, no big problem once you accept this thread. Provided the tread in the case is allright , better keep it, less work to do. While dealing with the box of troubles I did not keep the valve lifter design, but it is a fiddly job like in my photo but I am positive with it.</p><p> Vincent, your boring operation on the followers looks impressive, I guess you had to balance the lot well for 3000 rpm. Or it would have gone out the window into the next county ? Better get yourself one of the hf spindles for that type of operation, way less of nerve wrecking and nice for fitting components in micron dimensions. You cannot do minimal feed in a turning operation, unlike with grinding. I mostly fabricate a mandrel with an alu cylinder that gets a strip of abrasive glued on with instant glue. Easy to replace when blunt and wide choice of grits. Works great and not critical for vibrations , useful for through holes. There are hf spindles from 48 mm , up to 60 000 rpm at 1000 Hz. I like the Danfoss converters 5000 series. Had air power spindles long time ago , clamped in the Multifix lathe holder, but I hate noise , high air waste and oily too. Sure, CBN hard turning is great, but when you have to deal with bores or shafts with holes or gaps in them the finish may look unacceptable from hard turning, so grinding is unavoidable.</p><p>My setup for the crank pin hole in the one piece crank web was allright and proved perfect when trueing the crank - but ONLY for veeery low speeds on the lathe. Finish grinding for great surface roughness was no big deal once the lot was trued perfectly on the lathe plate. Maybe I had better honed the DRO mill positioned pin hole instead for good finish but did not think of this at the time.</p><p></p><p> Vic</p><p>hf spindles:</p><p><a href="https://www.aliexpress.com/item/32964301041.html?spm=a2g0o.cart.0.0.7ff83c00tGxpRS&mp=1" target="_blank">65 mm spindle</a></p><p><a href="https://www.aliexpress.com/item/32734506167.html?spm=a2g0o.cart.0.0.7ff83c00tGxpRS&mp=1" target="_blank">48mm spindle set</a></p><p></p><p>[ATTACH=full]35025[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]35021[/ATTACH]</p><p></p><p>air grinder for roller follower:</p><p>[ATTACH=full]35022[/ATTACH]</p><p></p><p>[ATTACH=full]35023[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 121476, member: 1493"] Had to do all shafts there certainly on butchered Argentinian B-Raps , some with individual sizes, but found a face reamer at a useful size for restoring good holes. The obsolete imp. thread on the new front ex follower spindle I retained, just made an oversize shaft on it, no big problem once you accept this thread. Provided the tread in the case is allright , better keep it, less work to do. While dealing with the box of troubles I did not keep the valve lifter design, but it is a fiddly job like in my photo but I am positive with it. Vincent, your boring operation on the followers looks impressive, I guess you had to balance the lot well for 3000 rpm. Or it would have gone out the window into the next county ? Better get yourself one of the hf spindles for that type of operation, way less of nerve wrecking and nice for fitting components in micron dimensions. You cannot do minimal feed in a turning operation, unlike with grinding. I mostly fabricate a mandrel with an alu cylinder that gets a strip of abrasive glued on with instant glue. Easy to replace when blunt and wide choice of grits. Works great and not critical for vibrations , useful for through holes. There are hf spindles from 48 mm , up to 60 000 rpm at 1000 Hz. I like the Danfoss converters 5000 series. Had air power spindles long time ago , clamped in the Multifix lathe holder, but I hate noise , high air waste and oily too. Sure, CBN hard turning is great, but when you have to deal with bores or shafts with holes or gaps in them the finish may look unacceptable from hard turning, so grinding is unavoidable. My setup for the crank pin hole in the one piece crank web was allright and proved perfect when trueing the crank - but ONLY for veeery low speeds on the lathe. Finish grinding for great surface roughness was no big deal once the lot was trued perfectly on the lathe plate. Maybe I had better honed the DRO mill positioned pin hole instead for good finish but did not think of this at the time. Vic hf spindles: [URL='https://www.aliexpress.com/item/32964301041.html?spm=a2g0o.cart.0.0.7ff83c00tGxpRS&mp=1']65 mm spindle[/URL] [URL='https://www.aliexpress.com/item/32734506167.html?spm=a2g0o.cart.0.0.7ff83c00tGxpRS&mp=1']48mm spindle set[/URL] [ATTACH type="full"]35025[/ATTACH] [ATTACH type="full" alt="P1040971.JPG"]35021[/ATTACH] air grinder for roller follower: [ATTACH type="full" alt="P1080567.JPG"]35022[/ATTACH] [ATTACH type="full" alt="Horex prewar.JPG"]35023[/ATTACH] [/QUOTE]
Insert quotes…
Verification
What was Mr Vincent's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Front EXH follower spindle on the piss ET30/3 ( a cure)
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