dismantling a conical rear hub - Triumph Forum: Triumph Rat Motorcycle Forums
Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 09-26-2019, 12:23 AM Thread Starter
rbe
Grand Prix 250
Main Motorcycle: 1976 T140
Member
 
rbe's Avatar
 
Join Date: Mar 2019
Location: sydney australia
Posts: 54
Other Motorcycle: 1970/78 T120R, MV Brutale
Extra Motorcycle: FLSTC TZ600 300EXC 350EXC
dismantling a conical rear hub

i need to pull my rear hub apart to get the flaking chrome removed - i then plan to polish it
the hub has had the spokes and rim removed
the hub proper came apart ok - bearings out
i'm now working on the brake backing plate - the pivot pin that the brake lever sits on came out easily, but the pin that the brake stay arm attaches to is a bit stubborn
it looks like it should come out, but just wondering if someone has some experience or tips that will make it easier and reduce the risk of damaging the plate - it seems pretty fragile
thanks in advance as usual for what i'm sure will be sage advice
rory
rbe is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 09-26-2019, 02:23 AM
Supersport 600
Main Motorcycle: 2015 Triumph Thruxton
Senior Member
 
Juan's Avatar
 
Join Date: Aug 2014
Location: Puerto Rico
Posts: 190
Other Motorcycle: 2016 Triumph Street Twin
Extra Motorcycle: Triumph T140V,T120R,TR6R
Hello Rory
I removed it on my rear conical brake but it has been a while. I would apply some penetrating oil and using a heat gun apply heat to the part then tap on the screw with a piece of wood. It should come out. I wouldn`t use a torch to heat it up.
Juan

[IMG][/IMG]
Juan is online now  
post #3 of 12 (permalink) Old 09-26-2019, 04:35 AM Thread Starter
rbe
Grand Prix 250
Main Motorcycle: 1976 T140
Member
 
rbe's Avatar
 
Join Date: Mar 2019
Location: sydney australia
Posts: 54
Other Motorcycle: 1970/78 T120R, MV Brutale
Extra Motorcycle: FLSTC TZ600 300EXC 350EXC
thanks Juan
i'll give that a try
i only hope mine end up looking as good as yours
rory
rbe is offline  
 
post #4 of 12 (permalink) Old 09-26-2019, 02:59 PM
Site Supporter
Commentator
Main Motorcycle: T140 E
Lifetime Premium
 
Join Date: Jun 2009
Location: Reading Berks UK
Posts: 9,445
Other Motorcycle: 56 Plunger Tatty Cub
Extra Motorcycle: CZ winter bike
Were they chromed originally?
It might be easier to find a decent unchromed one
DAVE M is online now  
post #5 of 12 (permalink) Old 10-01-2019, 08:55 PM Thread Starter
rbe
Grand Prix 250
Main Motorcycle: 1976 T140
Member
 
rbe's Avatar
 
Join Date: Mar 2019
Location: sydney australia
Posts: 54
Other Motorcycle: 1970/78 T120R, MV Brutale
Extra Motorcycle: FLSTC TZ600 300EXC 350EXC
finally got around to it today
heat gun applied and it came right out - with a bit of coaxing - thanks again Juan
note that the pin has splines/knurling on the part that is interference fit in the backing plate - glad i didn't try to twist it out
i assume that a PO had done the chroming - i don't know whether any models came with chrome originally
i would look around for one that wasn't chromed, but its taken me a year to find this one, and its in good nick so i'll go with it
Attached Thumbnails
Click image for larger version

Name:	IMG_1664.JPG
Views:	8
Size:	883.1 KB
ID:	657230  
rbe is offline  
post #6 of 12 (permalink) Old 10-02-2019, 07:00 AM
SOTP Vintage Series
Main Motorcycle: 1971 t120r
Senior Member
 
rambo's Avatar
 
Join Date: Mar 2005
Location: exmouth devon uk
Posts: 7,102
Other Motorcycle: Triumph Rocket 111
Extra Motorcycle: Triumph Thunderbird LT
Garage
They were not chromed on any new bike. Usually painted with a plain silver paint. I paint mine so i never have to polish between spokes. The brake plates were also painted in silver, although i have polished mine.

Now,where did that bit fall off ?
rambo is online now  
post #7 of 12 (permalink) Old 10-03-2019, 02:21 AM Thread Starter
rbe
Grand Prix 250
Main Motorcycle: 1976 T140
Member
 
rbe's Avatar
 
Join Date: Mar 2019
Location: sydney australia
Posts: 54
Other Motorcycle: 1970/78 T120R, MV Brutale
Extra Motorcycle: FLSTC TZ600 300EXC 350EXC
does anyone have experience with anodising the hub and backing plate?
i too am now starting to dread the upkeep of a polished hub with all those spokes in the way
was thinking of getting it anodised clear - which i think is really just aluminium colour
rbe is offline  
post #8 of 12 (permalink) Old 10-04-2019, 03:49 PM
Site Supporter
Commentator
Main Motorcycle: T140 E
Lifetime Premium
 
Join Date: Jun 2009
Location: Reading Berks UK
Posts: 9,445
Other Motorcycle: 56 Plunger Tatty Cub
Extra Motorcycle: CZ winter bike
You could polish and lacquer before a build.
Lacquer used to go yellow but I think it's better nowadays

My hubs were polished from the factory and I assume, lacquered ?
I have machine polished them and keep them up once built - without lacquer
DAVE M is online now  
post #9 of 12 (permalink) Old 10-17-2019, 07:02 PM Thread Starter
rbe
Grand Prix 250
Main Motorcycle: 1976 T140
Member
 
rbe's Avatar
 
Join Date: Mar 2019
Location: sydney australia
Posts: 54
Other Motorcycle: 1970/78 T120R, MV Brutale
Extra Motorcycle: FLSTC TZ600 300EXC 350EXC
latest update: took my hub and backing plate to an anodoiser to see if they could strip and andodise them
the person said they didn't work with chrome and couldn't anodise them because they were magnesium - the backing plate is very light, so i could accet it is mag, but the hub weighs a ton, so i'm less willing to accept that its mag (acknowledging that the brake drum would add weight)
does anyone know if the 2 bits are mag?
then took the bits to a chromer who will strip and suggested that afterwards i polish and clear lacquer them - sounds familiar eh?
thanks
rory
rbe is offline  
post #10 of 12 (permalink) Old 10-18-2019, 07:10 AM
wol
Moto Grand Prix
Main Motorcycle: T140 "special"
Senior Member
 
Join Date: Oct 2010
Location: Carmarthen UK
Posts: 2,580
Other Motorcycle: 1970 T120R Project
Extra Motorcycle: yes please
I would be surprized if they are Magnesium --( change that to Very surprized )
wol is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options
All posts must adhere to Forum Rules

Register Now



In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome