Yamaha RD 350 F2 '88 - Part 6 - New rear wheel bearings, seals, X-ring chain and sprockets

While maintaining rear linkage for my RD350 I went and replaced worn out sprockets and chain. The old chain had strained quite a lot during its life time and it was already tightened to its max position. One option would have been to just shorten it but since the old rear sprocket was also in pretty bad condition I decided it was best to just replace all those parts. 

I ended up choosing sprockets made by JT Sprockets and a X-ring chain made by D.I.D. I went with 17 tooth front and 39 tooth rear sprockets. Since the chain needed to be riveted I had to buy a chain breaking and riveting tool also made by D.I.D. There were two types of tools for sale. I bought the cheaper one, which had "02-99" stamped on the side of it. While riveting the chain I found the lower jaw of the tool bending and had to make a cotter out of flat bar to stop it.

I also decided to replace rear wheel bearings while I had the rear wheel out of the bike. I bought a kit which also included right sized oil seal (22 x 42 x 7 mm). I used a gas torch to heat up and expand both bearing hubs in the rear wheel to get the old bearings out and to install the new ones. Depending on the condition (rusty) of the bearings you might need give them a small knock. If you have painted your wheels you might need to use another solution. If you don't have proper tools for the job, there's a lot of shops, which can do it for you. 

Unfortunately I forgot to buy a new bearing (6304) for the sprocket carrier and since it was Sunday and all the shops were closed when I was doing all of this in a hurry to get the bike finished I just ended up greasing the old bearing and replacing worn oil seal with a new one (32 x 52 x 7 mm).

To sum all up here's a list of all parts needed for the job:

-Tourmax rear wheel bearing and seal kit (MCI-WBK-055) 

 or two 6302 bearings (15 x 42 x 13 mm) and oil seal (22 x 42 x 7 mm)

-Oil seal for sprocket carrier (32 x 52 x 7 mm)

-6304 bearing for sprocket carrier (20 x 52 x 15 mm)

-JT Sprockets 17 tooth front sprocket (JTF569.17)

-JT Sprockets 39 tooth rear sprocket (JTR846.39)

-D.I.D 520 VX2 X-ring chain with 106 links

-D.I.D chain breaking and riveting tool (02-99)

There's also one O-ring (93210-40530) in the rear wheel you might need to replace. Since mine was in good condition I just ended up greasing it.

Tourmax rear wheel bearing and seal kit (MCI-WBK-055)
and collar (90387-154A0).

Rear wheel (black) and sprocket carrier (blue) oil seals

Front and rear JT sprockets and D.I.D 520 VX2 X-ring chain.

D.I.D chain breaking and riveting tool.

Parts of the tool... 

...and instructions for it.

Cotter kept lower jaw from bending.

Bearings and other hardware removed...

...and new parts installed.

New rear sprocket and oil seal installed.

X-ring chain riveted and tightened.

Hifi & Tuning Show Oulu September 2016 - Euro cars

Here's the last photos from the event covering Euro cars.

Audi A3 Sedan

Hifi & Tuning Show Oulu September 2016 - American cars

American cars were also a minority this year. Here's few photos of the ones exhibited at the event.

1930 Chevrolet Hot Rod

Hifi & Tuning Show Oulu September 2016 - Motorcycles

Here's couple of photos of motorcycles displayed at the event.

1998 Honda CB1300 X4 Turbo

Hifi & Tuning Show Oulu September 2016 - Japanese import cars

Today I attended one of our local trade fairs called Hifi & Tuning Show held in Ouluhalli, Oulu. It is an annual event meant mainly for modified cars. First time the event was held in early 2000s. You can find more info of the event from their facebook page.

I wanted to test out a new camera, Sony DSC-HX90V, so I took quite a lot of photos during my stay. I will make separate posts of the event which will cover cars from different regions.

Honda Civic Type-R

Yamaha RD 350 F2 '88 - Part 5 - Rear suspension linkage maintenance

I did some small maintenance jobs while I had my bike dismantled and taken to pieces when I was modifying the rear frame. One of those jobs was to replace worn bushings, collars and seals from the rear suspension linkage with new ones. After cleaning and dismantling the linkage I found one corroded collar (part #: 90387-144H4), one worn bushing (90386-20134) and punch of broken oil seals (93109-20076 & 93109-18020).

Since my RD is quite old I had to purchase replacement collar and bushing from eBay where you can find a nice collection of NOS (New Old Stock) parts for sale. Common parts like oil seals I try to buy from my local store which sells industrial products. Most of the common sized bearings and oil seal are usually in stock so you don't have wait for them. This time I wasn't able to find the right sized oil seals for the linkage arm so I ordered them from my local Yamaha parts dealer. Dimensions for linkage arm oil seals (93109-20076) are 20 x 27 x 5 mm and drop link oil seals (93109-18020) 18 x 24 x 3 mm.

After getting all the right parts it was just a matter of greasing them with multipurpose grease and putting back together.

Parted rear suspension linkage.

NOS collar (90387-144H4) and bushing (90386-20134).

New oil seals for linkage arm (93109-20076)...

... and drop links (93109-18020).

Old versus New (Old Stock).

Yamaha RD 350 F2 '88 - Part 4 - Simple bolt-on mods

One thing that needed changing in my RD was the narrow handlebar it came with. The old handlebar I had on the bike was only 740 mm wide. Fortunately my local motorcycle parts store had a nice low and significantly wider tapered handlebar made by Emgo for sale with a discount. Emgo's are quite a bit cheaper than let's say handlebars made by Renthal or Magura but with a 50 percent discount this one was bargain not to miss.

I had a problem with fitting stock control switches on the new handlebar since they were too wide. Fatbar handlebars tend to have quite narrow control length since they are mostly used on motocross and enduro bikes. I had to buy a pair of slim bar ends and choose a narrow set of grips to make most of the narrow control length and widen it a bit. Fortunately it helped and everything fitted at the end. Luckily stock cables were also long enough and I didn't have to do any mods to them. You can find those slim bar ends from eBay if you have a similar problem. 

I also wanted to replace those old mirrors I had on the bike. Agila makes a nice looking and cheap pair of mirrors which fitted nicely without any adapters.

New fatbar made by Emgo (7075 CR low bend).

Pair of Slim Bar Ends made by Bike It.

Pair of Agila mirrors.

Left side mirror unboxed.

Pair of Domino grips.

New parts installed. Total width 860 mm with slim bar ends.

Closeup.

GoPro Hero with a handlebar mount?