Cbr900 fork conversion

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nt1980
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Location: East Sussex, UK
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Re: Cbr900 fork conversion

Post by nt1980 »

The caliper to disc is 2-2.5mm on the inside of both

the track one is about 1.5mm each side on the inside but has the disc spacers on as the double yoke on later cbr900 is slightly wider?
1998 black vtr (mods cbr900 fork conversion, ohlins rear shock, ohlins steering damper, prolite discs brembo master cylinder, goodridge braided lines, harris rear sets, Quick shifter,Mario Fairing, etc)
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nt1980
Posts: 317
Joined: Mon May 20, 2013 6:56 pm
Location: East Sussex, UK
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Re: Cbr900 fork conversion

Post by nt1980 »

Ive done over 500 miles with the bike together to test out the front end im now stuck with three issues

1) brakes are okay but dont feel stable no my idea is i swapped to wavy discs six months ago and since the conversion i have noticed the pads have made a different line on the discs and this is where the wavy bit is which im going to test my thoery by swapping the wheel for another with a different set on to see if this changes things

2) right hand bends i seem to get a slight vibe through the steering its slightly odd may be tyre or wheel balance again like above see what the difference is

3) vibe through steering at high speed again wheel balance


My thoughts so far its nice that you dont bottom out the forks any more and you feel the road surface better now the turn in seems to be a lot sharper and gives a bit more confidence hopefullt once ive found the reasons above il be happy :D
1998 black vtr (mods cbr900 fork conversion, ohlins rear shock, ohlins steering damper, prolite discs brembo master cylinder, goodridge braided lines, harris rear sets, Quick shifter,Mario Fairing, etc)
User avatar
nt1980
Posts: 317
Joined: Mon May 20, 2013 6:56 pm
Location: East Sussex, UK
Contact:

Re: Cbr900 fork conversion

Post by nt1980 »

Could not find the thread i had originally posted in but any way

After doing a load of research on the conversion i am doing i have found that the 98 cbr900 forks i have dont swap with the original discs as the 98 cbr900 had bigger discs 310mm and not the 294mm that the storm has fitted and the pre 98 cbr900 discs were the same size but different drill pattern.

So am i right in thinking i will need to get a set of cbr900 discs 98-99 originals or after market and have these drilled to match the storm hole pattern and may have to get some sort of bracket to go over the disc to keep them central on the wheel :thumbup:
1998 black vtr (mods cbr900 fork conversion, ohlins rear shock, ohlins steering damper, prolite discs brembo master cylinder, goodridge braided lines, harris rear sets, Quick shifter,Mario Fairing, etc)
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