1971 R5 repairs

[Gr8uncleal]

The books are a very good accompaniment but I'm unsure about the sissy bar, Then again, it's your bike so do what you want, at the end of the day it's you that's got to get on to the bike with that bar in the way? just my opinion, what's the bike looking like now?

It could prove useful for strapping luggage to!  In my case that could be a cricket bag!

[DaveHunter]

This thing could hold a set of golf clubs ! They must not be much of a market for used sissy bars it was inexpensive so not out much ...
 I’m traveling for a while so not much getting done, ordered some parts and reading up on problems people have had with the motorcycle. I work on boilers and heat pumps for a living and in training classes it’s always classroom first then out in the lab to apply what they told you on actual units. It would be great to avoid situations like battery not charging, lights that don’t work and poor running engine. Or at least when something does happen you are more educated on how things are supposed to work. For example there was a discussion on here about removing the brass balls in carbs to clean a passageway and replace with M5 “grub” screws so ordered some of them.
 How about your R5 robrd last post you were closer to being able to fire it up have you started it yet ? To milestones for me on a project / one is see it painted another is finally hearing it run.
 Photo attached of it first day delivered last spring


 

[Astute Greaser]

Bit frightened that the Sissy bar is just resting on the indicator stalks as restraint.
One it damages them but if they give up or you find a hard speedbump, the bar is going to hit you in the back or your pillion is going for tumble. Needs a better support I think but I'm sure you're on to that 

[robrd]

Hi Dave, not much really done this last couple of weeks down to a chest infection, chewing antibiotics. My workshop is quite cold so I am staying in the warm till 100%, one of the problems with COPD.

[DaveHunter]

Sorry to hear that robrd, good that your taking care , remember back when we were young just working through the pain and making ourselves worse !
 Got report a package arrived back home It’s either a set of piston rings or the sissy bay

[DaveHunter]

I have been glass bead blasting the many small parts. After that a wash, inspection for debris and then put aside for clear coat paint later.
 Can I do the carburetors also and expect to get all the media out or are there always something stuck in some obscure passage and that makes this a bad idea
 

[pidjones]

I would not use a hard abrasive on the carbs. And when glass bead blasting make sure to wear a filter mask and contain the dust. When the beads hit, they shatter creating glass dust that can easily lacerate lung and nasal tissue. If you must blast carbs, I suggest baking soda that can be removed in a hot water bath (or better, a hot ultrasonic).

[DaveHunter]

Quick updates, Back on the project, my son has joined in to help and that’s encouraging.  The gas tank painting has been a learning experience dealing with candy paint, picture attached of one of the setback moments.
 Motor came back from builder , Carbs are clean and look good.
 Sissy bar attached & has mounts that keep it away from indicators.

[DaveHunter]

 I’ve fallen in love with the sissy bar, envisioning sleeping bag & backpack strapped to it and heading out for a weekend. It has four attachment points the back two are left for the buyer to bend 90 degrees and meet correctly. Lots of planning came close however the predrilled holes were way off. As they are mostly hidden by the seat I welded them closed and drilled new ones. Bar sits about 1/2 inch proud of indicators.

[DaveHunter]

Horn repair, it did not toot , checked with a test meter  showed 12 volts getting to one wire on it , disconnected other wire and ohmmeter showed it grounded reliably each time horn button was pushed. Hit horn several times with the back of a screwdriver and it toots loudly
 Blinker repair - right side on would result in lights on steady one loud noise from flasher unit
 Left side would blow fuse.
 New flasher unit from Yambits right side working, using ohmmeter found I’d crossed wires under seat.
 It’s pretty clever how Yamaha connects left and right blinker wires through a little light bulb in tachometer to show you’ve got an indicator flashing

[DaveHunter]

Cleaning carbs -
 crammed the passages with paper towels , wrapped the three big openings with PVC tape , silicone tape ends , crank down adjustment screws till spring bottoms out , put sealed hose on hose barbs , bead blast then gently wash . Paper towels were dry, thoroughly clean carbs afterwards.
 I think no abrasive is in carbs. Also use a hepa vacuum to keep negative pressure in blast cabinet & wear a good filter mask that is also used for spraying paint

[5port]

Sorry but, blasted carbs need complete strip, every part. Then you have to clear every passage and orifice and prove it is all clear.  Media can get anywhere, and it does.

5port

[[Arrow]]

Sorry but, blasted carbs need complete strip, every part. Then you have to clear every passage and orifice and prove it is all clear.  Media can get anywhere, and it does.

5port

Correct.
My 4L0 carbs came back with the oiling passages blocked up after professional cleaning, (they were clear when I sent them). Had to get them in the sink to sort them out.

Sent from my SM-G973F using Tapatalk

[DaveHunter]

 Removed the little brass plugs covering the dead end passages of the carbonation/ used twisted thhn wire of various gauges down the passageways and lots of washing and air hose on them.
 

[DaveHunter]

More pictures