a 71 Bonneville to un-customize... - Page 3 - Triumph Forum: Triumph Rat Motorcycle Forums
Member's Restoration & Rebuild Projects Details of member's own projects.

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 234 (permalink) Old 11-29-2010, 06:34 AM
Site Supporter
Commentator
Main Motorcycle: T140 E
Lifetime Premium
 
Join Date: Jun 2009
Location: Reading Berks UK
Posts: 9,254
Other Motorcycle: 56 Plunger Tatty Cub
Extra Motorcycle: CZ winter bike
Your extra red wires are probably extra earths /grounds and are a good thing.

If you can afford it, get a new harness as it's doubtful that you can make a stock one any cheaper given the time factor.

I'd retain/add new grounds so that rather than rely on the frame to return the circuit, you can hook up to an earth point at the rear, in the headlamp and around the battery area.
DAVE M is offline  
Sponsored Links
Advertisement
 
post #22 of 234 (permalink) Old 12-03-2010, 01:47 PM Thread Starter
SuperStock
Main Motorcycle: 1971 Bonneville
Senior Member
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 235
Other Motorcycle: 1962 T100SS
Extra Motorcycle: 1970 CL350
lots of <<why?>>

but first, dogtired, that sounds like a really great idea to wire in multiple fuses. would you maybe be able to send a list (or a link to an already-posted list; i'm still struggling to get the knack of searching) of which circuits you fused and what rating fuses you're using? i'm assuming maybe flashers, horn, headlight/tail light, brake light, coils/condensers.... i'm sure i can come up with something, but do you have any specific advice?

on to the other progress. I dropped the front wheel and, paint on the hub notwithstanding, everything looks fine. There's even lots of lining on the brake shoes.

i opened up the forks while i was there and the first interesting news - unfortunately, i don't have a picture - is that the oil in the left fork was a light brown and the oil in the right was almost black. pretty much the same viscosity. weird? maybe?

second thing with the forks was that the socket head cap screws (the ones that go up into the fork leg) came out pretty easily. i'm a little worried that, since lots of people talk about needing to use tricks and/or special tools, maybe they weren't tight enough? we'll see. the first thing i found when i was inside was that the washers that are supposed to be at the bottom of the fork legs are either missing or are stuck pretty tight. any ideas on how to make sure they're not just stuck inside, before i try to buy new ones?

next up:
this doesn't seem to be much of an immediate problem, as there are still enough on the flats to get these out. but, combined with this:

that is, the inside of the fork leg, it's a reminder not to tighten the ropes on the front end so much when you're hauling that you get the forks stuck in the compressed position. i think, anyway. i'm not sure this is a problem either way, but i'm feeling like it'll be safer to be pessimistic.

another thing i noticed is that there's a difference between the two damper bottom nuts (technical term?). they both have a raised ring around the top (top in the picture, bottom when installed) but only the one on the right is continuous; the one on the left has four separate arcs with gaps every 90 or so degrees. should i assume one of this is aftermarket? maybe the same reason one of the forks had lighter-colored oil?

and lastly:

why would someone hit the fork cap nuts? at all, and particularly, hard enough to leave big dents? threads look clean enough, at least.

last bit of frustrating news, to repeat an earlier picture:

i was hoping that was just bad paint, that i'd be able to strip. i was wrong. it's bad chrome, which i'm now trying to convince myself is ignorable....

Last edited by therabbithole; 12-03-2010 at 01:51 PM.
therabbithole is offline  
post #23 of 234 (permalink) Old 12-03-2010, 04:32 PM
World SuperBike
Main Motorcycle: '68' T120 Bonneville
Senior Member
 
Join Date: Nov 2007
Location: corpus christi, texas
Posts: 1,825
Other Motorcycle: 2006 T100 Bonneville
Extra Motorcycle: '79' T140 street tracker
The P/O probably unscrewed the fork caps a few turns and beat on them with a hard hammer to drive the stanchions out of the yokes. Water mixing with oil will turn in milky bown so your guess about the different cap may be the culprit for the discolored oil if it let water pass.
jimmy bush is offline  
 
post #24 of 234 (permalink) Old 12-03-2010, 04:48 PM
Site Supporter
Moto Grand Prix
Main Motorcycle: Triumph Bonneville
Lifetime Premium
 
Join Date: Oct 2008
Location: Bordeaux, France
Posts: 2,895
Other Motorcycle: Triumph Speedtriple
Hi there,
Looks like a nice project, with some minor (but possibly expensive) things to sort out, for example those fork top nuts are about 30 bucks each!
At least the ones you have are salvageable until you find the cash to replace them
Regarding the fork sliders, they are normally polished alloy, I would suggest paying a visit to your local plating shop, they often have the means to remove the chrome, this process uses nasty stuff like cyanide but should not effect the alloy, it would just need a very good polish afterwards.

Enjoy your new toy

Webby
Webby is offline  
post #25 of 234 (permalink) Old 12-03-2010, 06:17 PM
SuperSport
Main Motorcycle: `71 TR6R
Senior Member
 
Join Date: Nov 2010
Location: Toronto.Canada
Posts: 1,195
Other Motorcycle: `73 TR7RV
Extra Motorcycle: 2005 Ducati 999
Caswell makes a product called Anodize&Chrome stripper that might be worth a try if you`re on a budget.Otherwise any chrome plating place will be glad to do it I`m sure.

As for the aluminum nuts at the bottom of the forks , I`d say that as long as they are functionaly identical there`s nothing to worry about.

The tops of the fork nuts were hammered in order to release the tubes from the taper fit in the top crown.Probably they were also overtightened at one point to make this necessary.Heat could have been applied if available but probably wasn`t.In any case none of these extreme measures would have been necessary if somebody knew what they were doing in the first place.I`d be willing to bet that the factory manual warns not to overtighten those nuts.Do you have the manual and does it address this issue?

Last edited by MoBe; 12-03-2010 at 06:38 PM.
MoBe is offline  
post #26 of 234 (permalink) Old 12-03-2010, 07:10 PM
SuperBike
Main Motorcycle: 70 T120R Bonnie
Senior Member
 
shrugger's Avatar
 
Join Date: Apr 2009
Location: Columbus, OH!O
Posts: 1,782
Other Motorcycle: 72 Norton Combat
Extra Motorcycle: Royal Enfield Bullet 500
Yikes! I think someone may have forgotten that there are also 2 clamping
bolts on the lower tree.

I'm not seeing anything here that's unusable. Just not picture perfect.
Aluminum is wonderful stuff. Once you remove what has to be the worlds
most hideous chrome job. I see no reason why they can't be made like new again.

"Thanks to denial, I'm immortal" -Phillip J. Fry
shrugger is offline  
post #27 of 234 (permalink) Old 12-03-2010, 08:53 PM Thread Starter
SuperStock
Main Motorcycle: 1971 Bonneville
Senior Member
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 235
Other Motorcycle: 1962 T100SS
Extra Motorcycle: 1970 CL350
hmm...

Thanks a lot for those tips on chrome stripping; I'll definitely check those out. And I may come visit you, Shrugger, for a follow-up on that like-new bit. I'm going to start with a quote from a plating place and will then at least have a price in mind for stripping. At this point I've got side covers, fork legs and rear engine brackets. I'm hoping to focus on mechanical stuff first and visual stuff second but if it's not too expensive than I guess it makes sense to do it while it's apart.

As for the fork cap nuts, I think I'm going to try to refrain from replacing them, since the threads look fine and should hold torque. I'll try to consider the hammer gouges 'character'.

I watched the official lunmad video on forks and learned that the missing washers are supposed to go on the outside of the fork legs against the head of the cap screws. They're still missing (as are the washers on the fork leg caps), but at least now I know where they'll go.

I also discovered, from the video, that I have another question. There's a part on my forks that's not on the forks in the video:
Is that metal washer something that came with an aftermarket seal, or is it something more important? It wasn't in the schematic in my (factory) service manual, but then again the service manual schematic seems to suggest that the fork legs flare out below where the dust cap attaches but then return to a much smaller outside diameter under the part where the rubber attaches. Mine look like the ones in the aforementioned video, where the legs flare out and then stay at the same diameter, leading me to think maybe there was just an error in the shop manual image.

Anyway.... the seals pretty much fell out of mine, and it looked like quite a hassle to get them out on the video. Lucky? Maybe?

Last edited by therabbithole; 12-03-2010 at 08:56 PM.
therabbithole is offline  
post #28 of 234 (permalink) Old 12-03-2010, 10:59 PM
SuperBike
Main Motorcycle: 70 T120R Bonnie
Senior Member
 
shrugger's Avatar
 
Join Date: Apr 2009
Location: Columbus, OH!O
Posts: 1,782
Other Motorcycle: 72 Norton Combat
Extra Motorcycle: Royal Enfield Bullet 500
If you find one closer let me know.
http://www.superfineshine.com/index.htm

Polishing aluminum to a mirror isn't a complicated endeavor. It does however
require much grunting, swearing and adult beverage consumption.
And yet it's most satisfying.

"Thanks to denial, I'm immortal" -Phillip J. Fry
shrugger is offline  
post #29 of 234 (permalink) Old 12-04-2010, 01:28 AM
SuperSport
Main Motorcycle: `71 TR6R
Senior Member
 
Join Date: Nov 2010
Location: Toronto.Canada
Posts: 1,195
Other Motorcycle: `73 TR7RV
Extra Motorcycle: 2005 Ducati 999
Looks like 97-7010 oil seal and retainer for `78 forks.

I believe I`ve seen these on e-bay advertised as suitable for all newer forks from `71 onwards.
MoBe is offline  
post #30 of 234 (permalink) Old 12-04-2010, 07:38 AM Thread Starter
SuperStock
Main Motorcycle: 1971 Bonneville
Senior Member
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 235
Other Motorcycle: 1962 T100SS
Extra Motorcycle: 1970 CL350
thanks!

Thanks, MoBe. I'll take that as a good sign that no one did anything too weird here (every little weird thing makes me a little more worried about hidden and more weird things elsewhere...). The number stamped on the seals is "GCI-72-16". Whatever that is. But I've got new ones on my shopping list, so I don't imagine it's a big deal either way, and I wont' re-install the metal cups.

To your earlier question, about torquing the fork cap nuts: the factory manual specifies 80 ft/lbs.
therabbithole 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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Do I Sell it or Customize it? (1952 Triumph Thunderbird) Iamtheonlyreal1 Classic, Vintage & Veteran 18 03-04-2011 12:43 AM
Customize carbs? jefftrent Speed Triple Forum 0 05-14-2010 09:13 AM
I'm preparing to buy and customize a new S3 and I have questions for current owners Feral Speed Triple Forum 36 05-24-2009 10:42 AM
Customize my Speed Triple... barred1 Speed Triple Forum 6 11-21-2007 03:43 PM

Posting Rules  
You may not post new threads
You may not 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