Hawk 250 forks - Page 3

kirbo7106 · 03-06-2017, 09:41 PM

Quote:

Originally Posted by Rail32

I may go with the triple nickel

Yes I checked woth race tech , th y have nothing that small of dia . It will frighten ya to see how samll the spring is if you are familiar with bikes at all. Progessive dude I need to talk to on vacation till late next week .
The phrase is all yours , feel free to " cash " in with it .

Ok, I changed the fork oil and did the "Double Nickle Shim" kit. Yikes! Those are some tiny springs! I am impressed with shim kit, tho. It really seems to help with the dive on hard braking. My forks had 200 ml of fluid in one fork and 190 in the other. I put 200 ml in each fork. I read where Ariel Red Hunter said that they require 210, so I will add 10 ml to each fork.

pete · 03-07-2017, 12:26 AM

Quote:

Originally Posted by hertz9753

That front tire reminds of the Dunlop 756 that I have on my Kawasaki KX125.

yer can have it... just pay shiping...
it came on the rim with the front end...
I never used it...

...

Ariel Red Hunter · 03-07-2017, 07:48 AM

Quote:

Originally Posted by Rail32

I may go with the triple nickel

Yes I checked woth race tech , th y have nothing that small of dia . It will frighten ya to see how samll the spring is if you are familiar with bikes at all. Progessive dude I need to talk to on vacation till late next week .
The phrase is all yours , feel free to " cash " in with it .

From an engineering point of view, there is a reason to use small diameter springs in forks. A small diameter spring, of the same as installed length as a larger diameter spring of the same wire diameter is stiffer. Why? Because it is a shorter piece of wire before it is wound. Think of it as a torsion bar. The shorter the bar of the same diameter, the stiffer. The diameter of a torsion bar is directly related to the diameter of the wire that is wound into a coil spring....ARH

pete · 03-08-2017, 12:09 AM

Quote:

Originally Posted by Ariel Red Hunter

From an engineering point of view, there is a reason to use small diameter springs in forks. A small diameter spring, of the same as installed length as a larger diameter spring of the same wire diameter is stiffer. Why? Because it is a shorter piece of wire before it is wound. Think of it as a torsion bar. The shorter the bar of the same diameter, the stiffer. The diameter of a torsion bar is directly related to the diameter of the wire that is wound into a coil spring....ARH

yer that is pretty much correct... and is the reason they have gone to such big Dia
springs in the USD forks.... the return action is less violent and easyer to control...

...

Rail32 · 03-09-2017, 07:59 PM

So I finally got to really see how my double nickel trick with 10 weight fork oil works . We have no snow and ground went back to be frozen . An hour playing in ditches , jumping into and out of ditches , lots of ruts doen into my woods . Super happy with it now for sure . Even pretty high wheelies and bringing it down feels way aceptable for me . BTW I would slap on anther front end if I had one that fits. But this is my first small bike in over 20 years , maybe more . I did see if spare KLR650 would work but triple tree is way longer

Glad to read it's working out for a few of ya.
ARH thanks for informing all of spring engineering concept . I was just amazed at how small it is . .

joeboyk · 03-09-2017, 08:06 PM

Quote:

Originally Posted by Rail32

So I finally got to really see how my double nickel trick with 10 weight fork oil works . We have no snow and ground went back to be frozen . An hour playing in ditches , jumping into and out of ditches , lots of ruts doen into my woods . Super happy with it now for sure . Even pretty high wheelies and bringing it down feels way aceptable for me . BTW I would slap on anther front end if I had one that fits. But this is my first small bike in over 20 years , maybe more . I did see if spare KLR650 would work but triple tree is way longer

Glad to read it's working out for a few of ya.
ARH thanks for informing all of spring engineering concept . I was just amazed at how small it is . .

Glad to hear it all is working better,I changed my oil out Sunday to fork oil 10 weight as well,but i left the nickels out to see what its like w/o can always add them in the future ,having carb issue since i put k&n in.

joeboyk · 03-09-2017, 08:11 PM

Quote:

Originally Posted by hertz9753

That front tire reminds of the Dunlop 756 that I have on my Kawasaki KX125.

My first inverted fork bike was a 92 or 3 yz 80, wow is was such a difference,I believe Yamaha was the first to do it in the 80 cc bikes .

hertz9753 · 03-09-2017, 08:51 PM

Quote:

Originally Posted by joeboyk

My first inverted fork bike was a 92 or 3 yz 80, wow is was such a difference,I believe Yamaha was the first to do it in the 80 cc bikes .

My KX125 is a 1980. The shop doesn't look like that anymore and I didn't ride that bike after that picture was taken, it lives out in the shed now. That is a first year Uni Trak. Some day I will fully restore it...

joeboyk · 03-09-2017, 09:13 PM

Quote:

Originally Posted by hertz9753

My KX125 is a 1980. The shop doesn't look like that anymore and I didn't ride that bike after that picture was taken, it lives out in the shed now. That is a first year Uni Trak. Some day I will fully restore it...

AWESOME LOOKING KAW,my bike of choice I still have my last one a 96 lakota almost mint,looking to get another tecate 4 wheeler to plat with.first real bike was a kx 60 other than the 5hp mini bike.

hertz9753 · 03-09-2017, 10:27 PM

Quote:

Originally Posted by joeboyk

AWESOME LOOKING KAW,my bike of choice I still have my last one a 96 lakota almost mint,looking to get another tecate 4 wheeler to plat with.first real bike was a kx 60 other than the 5hp mini bike.

The Kawasaki KX60 was the same for so many years. It had the same gas tank design and a modified linkage. The guys at the motorcycle shop at the end of the block were working on one about a year ago. They did hot laps around the block and I couldn't report them because I wanted one more lap.

BlackBike · 03-10-2017, 12:11 AM

Quote:

Originally Posted by hertz9753

The Kawasaki KX60 was the same for so many years. It had the same gas tank design and a modified linkage. The guys at the motorcycle shop at the end of the block were working on one about a year ago. They did hot laps around the block and I couldn't report them because I wanted one more lap.

2LZ · 03-10-2017, 10:51 AM

Quote:

Originally Posted by hertz9753

My KX125 is a 1980. The shop doesn't look like that anymore and I didn't ride that bike after that picture was taken, it lives out in the shed now.

Your favorite old bike lives out in your shed too, huh?

hertz9753 · 03-10-2017, 12:37 PM

Quote:

Originally Posted by 2LZ

Your favorite old bike lives out in your shed too, huh?

Yes, but the snow blower and lawn mower go under the shelf.

BlackBike · 03-10-2017, 10:17 PM

Lz.. perfectly preserved. Nice and clean and dry. The huskies can keep each other company

So many of us have said one time or another " I wish I still had that..." it will be a nice jewel when you get old ! No I don't want to here it 2lz, you aren't there yet.

pete · 03-10-2017, 10:22 PM

Mine lives in the lounge right under the TV.....
the wheels sitting against the wall are for the other Montesa..
That looks shocking...must get the skirting boads on the walls... sometime...
but working on motorbikes is more fun....

.

03-09-2017, 07:59 PM	#35
Rail32 Join Date: Feb 2017 Location: Marshfield , Wi Posts: 129	So I finally got to really see how my double nickel trick with 10 weight fork oil works . We have no snow and ground went back to be frozen . An hour playing in ditches , jumping into and out of ditches , lots of ruts doen into my woods . Super happy with it now for sure . Even pretty high wheelies and bringing it down feels way aceptable for me . BTW I would slap on anther front end if I had one that fits. But this is my first small bike in over 20 years , maybe more . I did see if spare KLR650 would work but triple tree is way longer Glad to read it's working out for a few of ya. ARH thanks for informing all of spring engineering concept . I was just amazed at how small it is . . __________________ Living life to the fullest to avoid regrets later ,,,,or I am a complete loon ! Either way I am good
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03-10-2017, 10:17 PM	#44
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	Lz.. perfectly preserved. Nice and clean and dry. The huskies can keep each other company So many of us have said one time or another " I wish I still had that..." it will be a nice jewel when you get old ! No I don't want to here it 2lz, you aren't there yet. __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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03-10-2017, 10:22 PM	#45
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,261	Mine lives in the lounge right under the TV..... the wheels sitting against the wall are for the other Montesa.. That looks shocking...must get the skirting boads on the walls... sometime... but working on motorbikes is more fun.... . __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
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