Pics Yamaha R1 Front End On My 2007

Yeah I thought that too the first time I installed them. Then I flipped it and it was labeled upside down and was impossible to tighten down. Lol that's just how they're supposed to be.

 

I was really careful about keeping them dirt free, but they were pulled apart and put back together so many times it was to be expected. I am actually surprised that only one seal is weeping. You can usually only get away with pulling them apart and putting them back together a few times. I did it a few times, gave up, gave them to a shop, they did it a few times and gave up and gave them back to me, then I pulled them apart again and figured it out and reassembled them and was expecting both seals to be damaged. But I read the service book a few times while the shop had the forks. Turns out the secret is, straight from Yamahas mouth, you need to put a small plastic bag over the top of the lowers, lube up and then slide in though the seals. Once all the way in, you pull the bag off from the other side. Lol really technical. I'm surprised that there is not a Yamaha specific fork bag part number tool kit necessary. Lol

 

CR great write up, I am glad things working out :hump:
Thanks for sharing I like report or threat with a lot of pictures :thumbsup: very informative.

 

Nice job and write up. Bikes looking good.

 

Thanks guys!


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Now that you have that front end on it, it may be time to tune it! Check out this site, most excellent. You must read this section and pay particular attention to the manufactures and their oil grades!! http://www.peterverdone.com/archive/lowspeed.htm

Here's a quote:

"DO NOT GO BY LABLED OIL WEIGHT! Not only is this a poor way to decide which oil to use, but each manufacturer seems to be on a different scale. For example Maxima RSF 7wt is actually lighter than Spectro 5wt and Silkolene Pro RSF 7.5wt is actually heavier than Showa SS-8 10wt. This is not a judgment about the quality of these oils, just that the 'weight' label leads to a lot of trouble when trying to tune with suspension oils.

Suspension oil is labeled by weight because consumers are used to thinking of oil (ie. motor oil & gear oil) in these terms. The SAE weight system has a very broad and vague viscosity range and does not even cover the viscosity range that most quality motorcycle suspension systems require. Another point of confusion is that motor oils and gear oils are rated for viscosity on the SAE scale at different temperatures, leading to similar viscosity oils having very different ratings. SAE J300 is used to define engine oils, while SAE J306 is used to define drive line (gear) and chassis lubricants."


I just found out and went mmmmmmm that explains a few things of the past. The whole site is super AFAIC.

 

Nice work man, and those .90kg/mm springs should be just fine.

 

cool stuff! Yamaha wants me to use yamalube 01 or that kawaba 01 equivalent. i wonder what i could go with that is a little heavier??

 

Thanks! I am going to stick with the 1.0 kg/mm springs that are in there. I like them! my stock rear shock on the other hand, feels way to over sprung and under damped. i need to get that out of there ASAP!