Monster fork problem - Page 2

Darkness · 24-02-2019, 02:08 PM

Quote:

Originally Posted by Wasta

Thanks for all the comments, this has turned into a bigger project than expected! It may be easier to source a wheel and speedo drive along with an axle from the relevant bike.

Five spoke Marchesini would be nice, but you may struggle to find a rear one that’s matching?

Wasta · 24-02-2019, 02:45 PM

Again, thanks for the input. The axle from an S4r looks like the one for these forks, I'll have to measure up again and check. The S2r calipers are the wrong ones as Darren69 mentioned, again the S4r calipers appear correct.
The mudguard is different as well as you say Darren, so I will have to source that along with a speedo drive, As Flip said I hope there are some cable driven ones around.

Wasta · 24-02-2019, 02:47 PM

Quote:

Originally Posted by Darkness

Five spoke Marchesini would be nice, but you may struggle to find a rear one that’s matching?

I'm trying to do this on a budget lol.

Jez900ie · 24-02-2019, 03:09 PM

I have a cable drive for a speedo, I bought together with some wheels and other parts in a job lot. Let me know which one you are looking for, some identifying numbers or a pic etc It might be the one you need and it will be cheap. Comes with the cable.

Wasta · 25-02-2019, 05:35 AM

Quote:

Originally Posted by Jez900ie

I have a cable drive for a speedo, I bought together with some wheels and other parts in a job lot. Let me know which one you are looking for, some identifying numbers or a pic etc It might be the one you need and it will be cheap. Comes with the cable.

Thanks, I will.

Wasta · 28-02-2019, 03:37 PM

Ok, Im looking at a front wheel now, part # (50120801AB) can anyone confirm this is the part I need to run with the 25mm axle?

utopia · 28-02-2019, 10:46 PM

I don't know what the parts list says but that number doesn't match anything that I can see on my original wheels .. from a yr2000 M750, with 25mm front spindle.

If you're looking at 3 spoke wheels then I think you want the later sort with spokes that get thinner towards the rim. Mine are like that anyway.
Earlier 3 spoke wheels had spokes which get fatter towards the rim.
Its a fair bet that the change in spoke design happened at the same time as the change to the bigger spindle ... though I can't say for absolute certain.

Wasta · 01-03-2019, 05:45 AM

Thanks Utopia. Its a real pain, there are so many variations on parts for these bikes, or so it seems!

Darkness · 01-03-2019, 02:14 PM

Quote:

Originally Posted by utopia

I don't know what the parts list says but that number doesn't match anything that I can see on my original wheels .. from a yr2000 M750, with 25mm front spindle.

If you're looking at 3 spoke wheels then I think you want the later sort with spokes that get thinner towards the rim. Mine are like that anyway.
Earlier 3 spoke wheels had spokes which get fatter towards the rim.
Its a fair bet that the change in spoke design happened at the same time as the change to the bigger spindle ... though I can't say for absolute certain.

It’s my belief that the early (Spokes fatter at rim) and some later three spoke wheels (Spokes fatter at hub) are interchangeable provided you have the right axle, speedo drive bearings and spacer. Some later three spokes (Spokes fatter at hub) don’t have provision for a mechanical speedo drive (The speedo drive changed to electronic pick up from back wheel instead of mechanical cable drive).

I would spend some time checking out the bearing sizes.

Dukedesmo · 01-03-2019, 02:19 PM

You can certainly use the same rear wheel on thin & fat axle Monsters simply by using a bearing with a smaller ID and the correct inner spacer, would imagine the same is possible for the front?

Darkness · 01-03-2019, 02:25 PM

St4 and M1000 uses 6005 2RSH on front. SKF Single row deep groove ball bearing with two rubber seals 25mm inside x 47mm outside x 12mm width
https://www.bearing-king.co.uk/beari...5x47x12mm/4244

M900 used 20mm inside x 47mm outside x 14mm width, so you may need to find some 14mm wide alternatives to the 6005?

Darkness · 01-03-2019, 02:32 PM

It is possible to fit an early mudguard on later fork legs.
You need a pair of ally/stainless strips with three holes. The lower mudguard mounting screw goes through the strip into the top fork leg hole, the upper mudguard mounting screw goes through the top of the strip to a washer and locknut, and the bottom of the strip is bolted to the lower fork leg mount.
More discreet when putting late mudguard on early forks as the strip is wholly hidden by the mudguard.

Nickj · 01-03-2019, 02:43 PM

Both my bikes have the five spoke Marchesini's which do look rather nice, maybe a future upgrade to add to the list?

Wasta · 01-03-2019, 03:28 PM

Thanks guys, this is going to need some research, if I can swap bearings for a 25mm id with the 14mm thickness I can use the old wheel which will save some money. Bloody bikes!!!

Darkness · 01-03-2019, 04:15 PM

Quote:

Originally Posted by Wasta

Thanks guys, this is going to need some research, if I can swap bearings for a 25mm id with the 14mm thickness I can use the old wheel which will save some money. Bloody bikes!!!

I would see if I could get hold of the 25mm axle, speedo drive, spacers and nut, then measure exactly what’s going on?

24-02-2019, 02:45 PM	#17
Wasta Registered User Join Date: Mar 2012 Location: Durham Bike: M900 Posts: 390	Again, thanks for the input. The axle from an S4r looks like the one for these forks, I'll have to measure up again and check. The S2r calipers are the wrong ones as Darren69 mentioned, again the S4r calipers appear correct. The mudguard is different as well as you say Darren, so I will have to source that along with a speedo drive, As Flip said I hope there are some cable driven ones around. __________________ 2018 Aprilia Tuono V4 1100RR 1998 M900 monster

24-02-2019, 03:09 PM	#19
Jez900ie Pleasantly surprised! Join Date: Nov 2016 Location: Stoke on Trent Bike: M900ie Posts: 780	I have a cable drive for a speedo, I bought together with some wheels and other parts in a job lot. Let me know which one you are looking for, some identifying numbers or a pic etc It might be the one you need and it will be cheap. Comes with the cable. __________________ Monsters don't hide under the bed, they sleep inside the shed

28-02-2019, 03:37 PM	#21
Wasta Registered User Join Date: Mar 2012 Location: Durham Bike: M900 Posts: 390	Ok, Im looking at a front wheel now, part # (50120801AB) can anyone confirm this is the part I need to run with the 25mm axle? __________________ 2018 Aprilia Tuono V4 1100RR 1998 M900 monster

01-03-2019, 05:45 AM	#23
Wasta Registered User Join Date: Mar 2012 Location: Durham Bike: M900 Posts: 390	Thanks Utopia. Its a real pain, there are so many variations on parts for these bikes, or so it seems! __________________ 2018 Aprilia Tuono V4 1100RR 1998 M900 monster

01-03-2019, 02:19 PM	#25
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,894	You can certainly use the same rear wheel on thin & fat axle Monsters simply by using a bearing with a smaller ID and the correct inner spacer, would imagine the same is possible for the front? __________________ M900, 916, LeMans II.

28-02-2019, 10:46 PM	#22
utopia No turn left unstoned Join Date: Jun 2010 Location: leicester Bike: M750 Posts: 4,559	I don't know what the parts list says but that number doesn't match anything that I can see on my original wheels .. from a yr2000 M750, with 25mm front spindle. If you're looking at 3 spoke wheels then I think you want the later sort with spokes that get thinner towards the rim. Mine are like that anyway. Earlier 3 spoke wheels had spokes which get fatter towards the rim. Its a fair bet that the change in spoke design happened at the same time as the change to the bigger spindle ... though I can't say for absolute certain.

01-03-2019, 02:25 PM	#26
Darkness . Join Date: May 2007 Location: Stockbridge Bike: M900 Posts: 1,984	St4 and M1000 uses 6005 2RSH on front. SKF Single row deep groove ball bearing with two rubber seals 25mm inside x 47mm outside x 12mm width https://www.bearing-king.co.uk/beari...5x47x12mm/4244 M900 used 20mm inside x 47mm outside x 14mm width, so you may need to find some 14mm wide alternatives to the 6005? __________________ Original and Best since 1993

01-03-2019, 02:32 PM	#27
Darkness . Join Date: May 2007 Location: Stockbridge Bike: M900 Posts: 1,984	It is possible to fit an early mudguard on later fork legs. You need a pair of ally/stainless strips with three holes. The lower mudguard mounting screw goes through the strip into the top fork leg hole, the upper mudguard mounting screw goes through the top of the strip to a washer and locknut, and the bottom of the strip is bolted to the lower fork leg mount. More discreet when putting late mudguard on early forks as the strip is wholly hidden by the mudguard. __________________ Original and Best since 1993

01-03-2019, 02:43 PM	#28
Nickj Too much time on my hands member Join Date: Jun 2007 Location: Forest Of Dean Bike: S2r Posts: 3,206	Both my bikes have the five spoke Marchesini's which do look rather nice, maybe a future upgrade to add to the list? __________________ "The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature

01-03-2019, 03:28 PM	#29
Wasta Registered User Join Date: Mar 2012 Location: Durham Bike: M900 Posts: 390	Thanks guys, this is going to need some research, if I can swap bearings for a 25mm id with the 14mm thickness I can use the old wheel which will save some money. Bloody bikes!!! __________________ 2018 Aprilia Tuono V4 1100RR 1998 M900 monster