OzVMX Forum

Marque Remarks => KTM => Topic started by: Grunter215 on September 02, 2013, 09:14:09 am

Title: MC5 build...another one.
Post by: Grunter215 on September 02, 2013, 09:14:09 am

My build is a 1976 MC5 250. Frame/swingarm/t-clamps are done.Motor nearly done. Now for suspension. Will rebuild original fork/shocks at this stage. Whats the best mods/setup for forks (leading axle cerianis). Need seals and wiper boots with cable holder are these available locally. What  seals fit ? Also swing-arm pivot do ya use grease or fill with oil? cheers                                             

Title: Re: MC5 build...another one.
Post by: Slakewell on September 02, 2013, 09:56:29 am

I use anti-seize in the swingarm and some grease in the bearings. 

Title: Re: MC5 build...another one.
Post by: ozktm on September 03, 2013, 05:29:05 am

I am running my Ceriani (leading axles) as standard, bought new valve kits from Al B. And they feel nice.
Swingarm, I think i am running oil in mine from memory. Haven't seen any leaks. But will check nearer the end of the year. Changing those bearings is one job i absolutely hate with passion.

Title: Re: MC5 build...another one.
Post by: Grunter215 on October 30, 2013, 07:12:14 pm

Ok finally back to '76 MC250  build. Stripped the fork lowers ready to paint ,went to remove seals ...no circlip?Check manual 2 seals+circlip. Mine has seal in metal casing. ?? Is this some alternative or a dodgy fix.I'm assuming the casing has been glued in also. Also found cracks around 2 axle bolt holes on both legs. Might be to much stuffin round to fix so anyone got Ceriani leading axle lower legs for sale. What ya thoughts boys . Cheers

Title: Re: MC5 build...another one.
Post by: ozktm on October 31, 2013, 12:37:56 pm

Good luck with finding those leg lowers.....those forks are hard to come by now.
Its a common problem with these and the leading axle marzocchi forks.

You will find a set of marzocchi 35mm leading axle forks easier on the net.

Title: Re: MC5 build...another one.
Post by: KTM47 on October 31, 2013, 01:46:06 pm

Is the cracking because the forks are magnesium?

Title: Re: MC5 build...another one.
Post by: ozktm on November 01, 2013, 06:52:36 am

Continual over tightening making it fatigue. You could get them welded, but need someone good.

Title: Re: MC5 build...another one.
Post by: Slakewell on November 09, 2013, 04:20:35 pm

I can weld them up NP but finding some mag filler rods is not easy as you can only buy by the kilo and it's not cheap.