PDA

View Full Version : Fork shortening on Lady P


nudemetalz
24th February 2009, 09:12
I'm wanting to get my forks shortened, ie the top stanchions chopped and rethreaded for the caps as they stick up quite far past the top triple clamp due to my radical steering geometry change.

Anyone recommend an engineering shop in Wellington (or further afield if necessary)?
quallman1234
24th February 2009, 09:15
Skunkworks. Bellringer Rd. But i suppose that would be getting help off the evil competition. ;)
nudemetalz
24th February 2009, 09:33
Chopping the forks is the easy bit. It's finding a tap and die the same pitch as the fork caps.
saxet
24th February 2009, 10:09
You could try asking the guys at Cycleworks in Wingate,Lower Hutt. They get involved in mods to race bikes. Give Damon there a call.
Skunk
24th February 2009, 10:20
A Hutt workshop. I hear there is a talented engineer there sometimes who needs money for Nationals. He may be able to do it. Let's call him 'Sketchy'.
quallman1234
24th February 2009, 11:28
Yep. Give em to sketchy. He'll see you right.
nudemetalz
24th February 2009, 11:29
Okay, I may be able to get hold of this person you call "Sketchy" ;)
If not, I'll try Saxet's option.

Thanks guys.
SHELRACING
24th February 2009, 11:54
Would it be easier to adopt the Suzuki method that has a push in fork cap, which is retained by a circlip. You'd need to find some caps of course !

Steve
SHELRACING
24th February 2009, 11:58
Wonder if you could machine, (in my case file or grind) the thread on the cap back so that you could push the cap in and drill the fork above the cap and fit a retainer bolt.

Might be worth a try on an old fork if you got one lying around.
nudemetalz
24th February 2009, 12:00
My forks with the spacers are fairly firm now and I wouldn't feel confident that only a pin or 2 are stopping a cap flying back at my helmet while hard braking :eek:
quallman1234
24th February 2009, 12:11
A start would be to measure the thread in question. What are you going to do with the dampening rods in the top of forks? Assuming the RGV150 Forks are similar to the RG150 forks.
Cut the springs and keep the same size dampening rod?
nudemetalz
24th February 2009, 12:17
Actually funnily enough, the RGV forks come out standard with a spacer about the same length as what I want to trim off. My own spacer and the damper rod (in the bottom) will be unaffected.
quallman1234
24th February 2009, 13:33
Actually funnily enough, the RGV forks come out standard with a spacer about the same length as what I want to trim off. My own spacer and the damper rod (in the bottom) will be unaffected.

Well thats handy. Good stuff.
nudemetalz
24th February 2009, 14:19
Well, text sent to Sketchy (Sketchy, are you there?)....
Here's hoping it's straightforward.
all4A50s
24th February 2009, 20:14
Have you looked at finding another set of forks that are the same diameter and the length you want?
nudemetalz
24th February 2009, 20:29
Easier to get them cut to the exact length I want. Anyway, Sketchy came over tonight and had a look at them. All sorted, going to be done :niceone:
SHELRACING
25th February 2009, 12:07
My forks with the spacers are fairly firm now and I wouldn't feel confident that only a pin or 2 are stopping a cap flying back at my helmet while hard braking :eek:

U go fast enough to need brakes then ?? :rofl:
nudemetalz
25th February 2009, 12:17
Maybe,...why don't you come down to Kaitoke and find out......?? :yes:
SHELRACING
25th February 2009, 18:50
Maybe,...why don't you come down to Kaitoke and find out......?? :yes:

Hmmm, we were just talking about Easter weekend, that's could be a maybe ?? What's the weather report like ??
speights_bud
25th February 2009, 19:09
Easier to get them cut to the exact length I want. Anyway, Sketchy came over tonight and had a look at them. All sorted, going to be done :niceone:

choice he's good at stuffs like that :Punk:, has he got a tap to cut the thread? or is he going to pull em apart and screw cut the thread on a lathe? just curious what is the thread btw?
nudemetalz
25th February 2009, 19:28
I believe he's got a tap. Unsure if it's going to be lathed, most likely not as he said I didn't need to strip the forks down.
The thread is 1mm.
Kendog
25th February 2009, 19:42
What's the weather report like ??

Windy :doh:
nudemetalz
25th February 2009, 19:50
Bring a spare pair of slicks 'cause the racetrack will wear them out !!
Sketchy_Racer
26th February 2009, 16:45
No tap. I'll put em in the lathe and part off the old bit, then screw cut a new thread inside.

It's a 1 mm pitch paddy, but I don't know the diametre i'll find that out when I get em to the shop.
speights_bud
26th February 2009, 17:52
No tap. I'll put em in the lathe and part off the old bit, then screw cut a new thread inside.

It's a 1 mm pitch paddy, but I don't know the diametre i'll find that out when I get em to the shop.

sweet as, was gonna say if you didn't have one i can have a look at work for you we got all sorts of odd sized shit like that around, but screw cuttin the feckers would be just as fun, gonna use HSS to part the chrome off? :lol: