September 1st, 2012, 12:22 PM | #41 |
ninjette.org member
Name: Jim
Location: Jax, FL
Join Date: May 2012 Motorcycle(s): 2000 Ninjette, 98 CBR600, 98 VFR800, 2000 BMW R1100RS, Kymco Movie 150 Posts: 146
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Goddam boys, that stuff looks trick. Far be it from me to criticize a cool project, but wouldn't it be easier just to cut a piece of PVC pipe to the right size?
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September 1st, 2012, 12:31 PM | #42 |
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Precisely, that would be TOO easy, to do, but a b**ch to adjust and it wouldn't be trick either
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September 1st, 2012, 12:43 PM | #43 |
ninjette.org member
Name: Jim
Location: Jax, FL
Join Date: May 2012 Motorcycle(s): 2000 Ninjette, 98 CBR600, 98 VFR800, 2000 BMW R1100RS, Kymco Movie 150 Posts: 146
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Valid points. have fun.
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Jim Moore Jax, FL |
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November 2nd, 2012, 12:52 AM | #44 |
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Sooooo... Since I haven't really had a chance to test my "home made" preload adjusters yet, I thought it would be a perfect time to make another set...
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November 2nd, 2012, 07:31 AM | #45 |
wat
Name: wat
Location: tustin/long beach
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i like having a larger nut on top... it makes it easy to adjust by hand while you are riding the bike (like "oh i forgot i have this set super tight cause i was riding fast... now i'm riding over bumps... loosen'erup!")
also to address the whole 'just cut pvc' issue; the problem is that you have to cut and check and cut and check and cut and check and if you lose 5 lbs or change gear, you get to cut and recheck all overagain. with a simple screw adjuster, you can sit on the bike and have someone measure your sags and be done with adjustment in 30 seconds. yes it takes a little prep work but for people who want more control depending on the situation (track conditions, street and road conditions etc) its almost mandatory... and DIY preload adjusters accomplish the same thing without buying a $100 piece of metal another thing to note is that preload is not a replacement from properly weighted springs. its in addition to spring and oil changes.
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November 2nd, 2012, 07:36 AM | #46 |
wat
Name: wat
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i forgot to mention, nice work @psych0hans
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November 2nd, 2012, 08:01 AM | #47 | |
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Quote:
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November 2nd, 2012, 08:07 AM | #48 |
wat
Name: wat
Location: tustin/long beach
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i have .75 sonic springs. i think it came with instructions that i promptly threw out. the springs are shorter than stock so it comes with pvc to make new spacers and new metal washers to go between each section... i like the washers they give better than the oem washers in the fork so i used those instead. the springs with heavier oil really was a very noticable difference. but with the front setup correctly it really highlights the rearend... time for a new rear shock i think :P i run the R1 shock which is dirt cheap and easy to work on... but you have to use the r1 shock knuckle and make your own links if you want to go that route. but only doing one end of the suspension will definitely make you wish you had done both
front without rear isn't as bad as rear without front
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November 2nd, 2012, 06:53 PM | #50 | |
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Quote:
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November 4th, 2012, 06:31 PM | #52 |
ninjette.org certified postwhore
Name: Hansveer
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9.3 or so... I was recommended a rear spring rate of 8.0 by race tech... So 8.5 is close enough.
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April 8th, 2014, 06:22 PM | #53 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
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Might try an do a take on this in the near future. Here is what i have going on.
So i bought these chinese preload adjusters off flea bay for $38. http://www.ebay.com/itm/FRONT-FORK-C...a5d547&vxp=mtr They are 37mm but threaded for 34mm 1.5pitch. The inner top tube diameter or stock new gen tubes is around 1.25", close to 32mm. I thought about trying to thread the inner tube for 34mm but after some research 34mm tapes are hella expensive and there is always a chance i ruin my upper fork tube so then i would be out $$$ for the tap and $$$ for new forks.... not really worth it IMO. So next idea. I will take the cheap chinese Preload adj. and cannibalize them to use in conjunction with this DIY to make them look perdy. Will drill and thread OEM fork cap for the adjuster screw from the Chinese adjusters and that would create a functional preload adjuster, but then i will cut off the top of the Chinese adjuster at lower part of o-ring which is the distance of gap from OEM cap to top of fork tube. That part will really just sit on top of the OEM fork cap and give the appearance of aftermarket preload adjusters. Given the tools and the ability $38ish for the parts (Chinese adjusters) isn't terrible compared to $140 for sato or $99 for knock offs. I already have these chinese adjusters so i don't have much to lose, if i mess up the OEM caps or they don't work i will just buy aftermarket adjusters regardless. original DIY could be done much cheaper but this should be fairly plug and play with the hardware with a more refined look. More to come, i will need to buy a tap for the adjuster screw but first i need to figure out size and pitch. Should be a lot cheaper for an ~3/8th tap vs 34mm tap Even the cheap Chinese 34mm tap was $90, i offered $50 they declined lol
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 8th, 2014, 06:36 PM | #54 |
wat
Name: wat
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if you don't have a lathe, stick it in a drill, tape the drill to the table in the on position, then use a metal file and your calipers to bring it down to the correct size. you can lock your chuck onto that end piece
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April 8th, 2014, 06:46 PM | #55 |
dirty boy
Name: Joe
Location: Johnstown, PA
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i have a drill press and vise so that should be good enough but will remember your suggestion about taping drill to table for future endeavors when it is not handy
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 8th, 2014, 07:00 PM | #56 |
wat
Name: wat
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drill press probably works better than a normal drill. if you can chuck up the piece. you might not be able to with a normal chuck. they have lathe-style 3 tooth chucks that fit into a standard drill chuck
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April 11th, 2014, 06:50 PM | #57 |
dirty boy
Name: Joe
Location: Johnstown, PA
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So i think i have everything i need for this.
Got the cheap chinese adjuster, check, i have one of the tops hacked off of one and it seems like it will work very nicely as a cover and give a good look and I will use the actual chinese adjuster bolt/screw in the stock fork caps I have stock fork caps I have 11/64 drill bit (drill size for a 10mm tap) I just bought a metric tap set that includes a 10mm 1.5 pitch tap. (Diameter and pitch of chinese adjuster bolt) Just need to get to it. might have some time tomorrow to give it a go. I am optimistic. Needing to buy the tap set set me back $50 in the end, so $40 for the chinese adjuster and $50 for the tap set puts me at $90 so that is not really cheap, and you could buy cheap adjusters for $90, but IMO you can't think of it that way as i now have a tap set that i can use for the rest of my life given i take care of it. But if you already have the tools i think this could be a good option to save $60-$90 on adjusters more to come, ill add up some pics to
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. Last futzed with by subxero; April 12th, 2014 at 04:34 AM. |
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April 13th, 2014, 02:32 PM | #58 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
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drilled, tapped, fitted everything up today
Fit, finish and looks i give it a 9/10 Ill put up some pics later tonight when i get a chance. Functionality... well... how about a 3/10 The adjusters work perfectly but... my screw/threads leak like a sieve. I actually seen this coming but i still have yet to figure out what i am going to do about it and still maintain the functional point of preload adjusters. The pitch of the chinese adjuster screw is pretty high 1.5, if it was lower and it threaded a little tighter the threads might have held, but given this they do not. The threads are fairly loose. I know Alex s mentions fitting an oring in the system somewhere, and i think that is the way to go, just need to figure it out
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 13th, 2014, 02:35 PM | #59 |
ninjette.org member
Name: jim
Location: texas currently in Temecula Valley CA
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how about wrapping the threads with teflon plumber's tape.
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April 13th, 2014, 02:46 PM | #60 |
dirty boy
Name: Joe
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^ cheap, and quick and easy, ill definitely try it. But will need to make sure no way of introducing the teflon into the forks, so maybe only use it on the top half of the threads or so? ill see
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 13th, 2014, 05:35 PM | #61 |
wat
Name: wat
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i used grease and gasket maker
ie- gasket maker the bolt threads first, then once it dries and is good, remove it and grease it
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April 13th, 2014, 07:03 PM | #62 |
dirty boy
Name: Joe
Location: Johnstown, PA
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pics of my junk
First pic is chinese adjuster before i to center screw out and washer off bottom and then hacked top off
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 13th, 2014, 07:11 PM | #63 |
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Name: Hansveer
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Nicely done
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April 13th, 2014, 07:28 PM | #64 |
dirty boy
Name: Joe
Location: Johnstown, PA
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^thanks, like i said earlier, i am really happy with the way they look and partially function, just need to get them air tight, tight like a tiger
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 13th, 2014, 07:47 PM | #65 |
ninjette.org member
Name: jim
Location: texas currently in Temecula Valley CA
Join Date: May 2013 Motorcycle(s): honda crf230l & 2013 ninja 300se wife has Honda crf230l & honda cbr250r repsol Posts: 222
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Do you think it would work on a 300? It looks great.
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April 14th, 2014, 05:47 AM | #66 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
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I'm pretty sure 300 has same fork diameter as 250, so it would work the exact same.
Again you would need to get the threads sealed up though, right now they leak air and is not acceptable. Will try to seal them this week sometime when I get a chance. As I kind of said earlier this isn't the cheapest DIY and most people would probably be better off buying one of the cheaper aftermarket adjusters. Since I already had the Chinese ones, I bought to specifically fiddle with to see if they would work as is and did not work, I figured I would see if I could not make them work one way or another. Idealistically, you could just thread the inner fork to accept the threads of the Chinese adjuster and wham bam done. But if you don't have a 34mm tap handy it is no that easy as a tap that large costs over $100 and defeats the purpose of a "cheap DIY" But $40 for the adjusters, and time and tools and you can get this to work. But would it be easier just to spring for an additional $60 for adjusters that work out of the box?
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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April 21st, 2014, 10:27 AM | #67 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
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Just to update, the Teflon tape seemed to work at stopping any air leak at the adjuster screw. I put the Teflon up high on the screw so it should not get introduced into the fork tube as it will never get that far down. I will ride the bike like this for a while and keep checking to see if it springs any leaks, Figure it should be fine though.
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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September 1st, 2014, 07:57 AM | #68 |
ninjette.org member
Name: jim
Location: texas currently in Temecula Valley CA
Join Date: May 2013 Motorcycle(s): honda crf230l & 2013 ninja 300se wife has Honda crf230l & honda cbr250r repsol Posts: 222
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Any updates?
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September 1st, 2014, 08:11 AM | #69 |
dirty boy
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012 Motorcycle(s): I don't even know anymore?? Posts: A lot.
MOTM - Apr '14
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from me? yeah, no problems been riding for awhile, i haven't noticed any air leaks. I'm happy with it.
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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May 14th, 2020, 05:57 AM | #70 |
ninjette.org newbie
Name: Andrew
Location: NH
Join Date: May 2020 Motorcycle(s): 2010 250R, 2007 F800S, 2016 R1200RS, DR650, 78 CB400t Posts: 1
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Im reviving the thread!
I thought of doing this same modification to my BMW and sealing the adjuster threads with teflon tape. Then i gave it a quick google search. Low and behold, it has been done already. Since this is the only thread i can find on the internet with this modification, i have some questions. Subxero, do you still have the bike? Hows it holding up? Anything you would do differently? |
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