Most motorcycle problems are caused by the nut that connects the handlebars to the saddle.

Front fork replacement

Share
avatar
Mad_Taffy_500
Scratcher!
Scratcher!

Posts : 22
Location : Newport

Front fork replacement

Post by Mad_Taffy_500 on Tue 23 Feb 2016, 10:18 pm

Hey guys 

Need some advice my front forks are so.badly pitted and rusted that I need to get replacement ones but eBay is not showing much up 

So I was hoping someone could help with what other forks might fit from different bikes 

Thanks
avatar
Beresford
the 900
the 900

Posts : 1408
Location : not that far from Kirkistown

Re: Front fork replacement

Post by Beresford on Wed 24 Feb 2016, 12:11 am

Any forks can be made to fit if one has access to machine tools, but a simple drop in would be good to know about. Somewhere in this forum there is a mention of somebody installing a twin disc set-up I seem to remember from a CBf600 or similar. I think the wheel was included because of axle sizes or something like that.
avatar
Jameshambleton
Moderator
Moderator

Posts : 1720
Location : Bedale, North Yorkshire

Re: Front fork replacement

Post by Jameshambleton on Wed 24 Feb 2016, 3:30 pm

@Beresford wrote:Any forks can be made to fit if one has access to machine tools, but a simple drop in would be good to know about. Somewhere in this forum there is a mention of somebody installing a twin disc set-up I seem to remember from a CBf600 or similar. I think the wheel was included because of axle sizes or something like that.

CBR600RR4

It was in @Andyc track bike project thread http://www.cb500club.net/t3915-my-track-bike-project
avatar
Mad_Taffy_500
Scratcher!
Scratcher!

Posts : 22
Location : Newport

Re: Front fork replacement

Post by Mad_Taffy_500 on Wed 24 Feb 2016, 7:23 pm

Looking for a simple drop in as more than happy with the standard brakes and looking to make it a thundersport bike
avatar
ANDYC
the 900
the 900

Mechanic
Posts : 699
Location : Windsor

Re: Front fork replacement

Post by ANDYC on Wed 24 Feb 2016, 8:08 pm

I also use a CBR600f2 front end for my work bike, I wanted to keep the speedo drive for the standard clocks. So a 1994 was the latest I could use.


And a cleaner picture.

Being able to use radial tyres improves the handling no end.
I use a rear wheel from an NC29 CBR400 with a 160/60.
avatar
jim157
Two Tone
Two Tone

Posts : 122
Location : Norwich

Re: Front fork replacement

Post by jim157 on Wed 24 Feb 2016, 8:53 pm

What modifications did you need to make to get those to fit Andy?
avatar
ANDYC
the 900
the 900

Mechanic
Posts : 699
Location : Windsor

Re: Front fork replacement

Post by ANDYC on Thu 25 Feb 2016, 7:42 pm

The front end fits straight on, apart from,

The lockstop on the frame needed filing a touch to get the steering lock to engage smoothly.
The standard CBR bars are clip-ons, riding all day with my ageing back needed a more upright position so I fitted risers with a set of Renthals. All the wiring and cables fitted okay apart from the clutch cable. The CBF500 came to the rescue and that cable fits perfectly.


The rear wheel uses the cb500 rear disc which fits straight on, the sprocket alignment is 5mm further out than the cb500, you can space out the front sprocket with no problems, I did that for years. If you feel really adventurous you can fit a gearbox output shaft from a CBF500 which moves the front sprocket out by 5mm. It's identical to the CB500 (apart from the extra 5mm, that is).
The NC29 wheel uses a 20mm spindle compared to the 17mm of the CB500. At first I made up spacers,which worked fine for years.
Later I just bored out the swing arm slots and chain adjusters to 20mm and used a 20mm spindle from a CBR600f4.
avatar
jim157
Two Tone
Two Tone

Posts : 122
Location : Norwich

Re: Front fork replacement

Post by jim157 on Thu 25 Feb 2016, 8:33 pm

That's great info, many thanks.

Sponsored content

Re: Front fork replacement

Post by Sponsored content


    Current date/time is Tue 25 Jul 2017, 9:39 pm