Leak proof is not good for air forks
#1
Leak proof is not good for air forks
Hey all CBR freaks,
I replaced my 87's front fork seal about 3000 miles ago. I used leak proof product. I had been noticed that the right fork started leaking again about a week ago. Before I found the leak, I put about 3 psi of air pressure to the both fork. Leak proof seal is actually wiping back the fork oil, not really sealing the space between outer and inner tube. If I didn't put any air to the fork, the leak proof seals might be OK. Now it is like a broken levee, leak is getting worth. HONDA shop guy told me that if I want to have air assist, better use genuine seal. I want little stiffer front. How do you guys think if I put some giant washers between fork spring and fork cap? Does it make the spring rebound stronger or simply make the spring shorter?[/align]
I replaced my 87's front fork seal about 3000 miles ago. I used leak proof product. I had been noticed that the right fork started leaking again about a week ago. Before I found the leak, I put about 3 psi of air pressure to the both fork. Leak proof seal is actually wiping back the fork oil, not really sealing the space between outer and inner tube. If I didn't put any air to the fork, the leak proof seals might be OK. Now it is like a broken levee, leak is getting worth. HONDA shop guy told me that if I want to have air assist, better use genuine seal. I want little stiffer front. How do you guys think if I put some giant washers between fork spring and fork cap? Does it make the spring rebound stronger or simply make the spring shorter?[/align]
#2
#3
RE: Leak proof is not good for air forks
the air valve (if it has one) is to remove air not put it in, if u want better fork function, get the forks sent away and revalved and bushed or change the bushes yrself not expensive, as for the fork seals leaking, mine did the same orthough i used genuine seals, i think it all comes down to how u install them, first time i didnt take much care because the old seals were in such a state, second time i made sure it was perfect, have only done 100k on new seal so will see if it worked or not, one thing i should have replaced was the top and bottom bush, as these effect the seal working properly.
#4
RE: Leak proof is not good for air forks
ORIGINAL: jb
the air valve (if it has one) is to remove air not put it in
the air valve (if it has one) is to remove air not put it in
#5
RE: Leak proof is not good for air forks
I want little stiffer front. How do you guys think if I put some giant washers between fork spring and fork cap? Does it make the spring rebound stronger or simply make the spring shorter?
The oil gap is the cheapest way to improve the damping feel. I reduced my air gap ( no spring & fork bottomed ) to 145mm ( 5 -11/16" )
( I stuck with Motul 10wt fork oil )
The springs + the change in air gap made a big difference to the feel of the bike.
#6
RE: Leak proof is not good for air forks
Guys,
Thanks for your advises. I fixed the fork seals today. One think I want really share with you all, and this was very effective. A friend of mine who is BMW freak and he used to run his motorcycle restoration business (now he is a certified BMW motorcycle mechanic in FL I believe...) taught me this technique long time age and I tried it. Before I installed the HONDA genuine fork seals, I put these in freezer over night. The seals were shrank and I could set right into the outer tube without seal pushing tool. Then, leave the fork under the sun light for a while, and it was done. And I tell you what., I recommend everybody to use HONDA genuine fork seal. It's pricey, but comes with dust boots and much much better quality than any after market products.[/align]
Thanks for your advises. I fixed the fork seals today. One think I want really share with you all, and this was very effective. A friend of mine who is BMW freak and he used to run his motorcycle restoration business (now he is a certified BMW motorcycle mechanic in FL I believe...) taught me this technique long time age and I tried it. Before I installed the HONDA genuine fork seals, I put these in freezer over night. The seals were shrank and I could set right into the outer tube without seal pushing tool. Then, leave the fork under the sun light for a while, and it was done. And I tell you what., I recommend everybody to use HONDA genuine fork seal. It's pricey, but comes with dust boots and much much better quality than any after market products.[/align]
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