M1R Fork rebuilds

discussions specific to the 907IE
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arp489j
Posts: 39
Joined: Sun Oct 30, 2016 9:05 pm
model: 907 I.E.
year: 1993
Location: UK

M1R Fork rebuilds

Post by arp489j »

Can anyone recommend a specialist to strip, hard chrome and rebuild my 907 forks in the UK? I got the bike recently which had been in storage with heavily rusted stanchions. I tried riding it but both fork seals were destroyed within a couple of miles, unsurprisingly.

Many thanks.
RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE sold May 2017
1993 DUCATI 907IE sold September 2017
1995 TRIUMPH DAYTONA SUPER III
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paso750
paso grand pooh-bah
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model: 750 Paso
year: 1987
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Re: M1R Fork rebuilds

Post by paso750 »

While I have no experience with any suspension shop specially not in the UK, there`s for example http://www.pittedforks.co.uk
arp489j
Posts: 39
Joined: Sun Oct 30, 2016 9:05 pm
model: 907 I.E.
year: 1993
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Re: M1R Fork rebuilds

Post by arp489j »

paso750 wrote:While I have no experience with any suspension shop specially not in the UK, there`s for example http://www.pittedforks.co.uk
Thanks for this. Alternatively, new stanchions are available for the 906 but I don't know if they are the same as the 907 stanchions ?
RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE sold May 2017
1993 DUCATI 907IE sold September 2017
1995 TRIUMPH DAYTONA SUPER III
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englishstiv
paso grand pooh-bah
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model: 907 I.E.
year: 1992
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Re: M1R Fork rebuilds

Post by englishstiv »

These guys are the go to blokes for Paso forks they can also adapt and alter the internals for you, they were back in the day quite reasonably priced too although I used them for something non Paso related.

http://www.maxtonsuspension.co.uk/
DUCATI 907ie 1992
HARLEY DAVIDSON ELECTRA GLIDE CLASSIC 1991
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Frank.61
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Joined: Fri Jul 24, 2015 11:21 am
model: 750 Paso
year: 1989
Location: Belgium

Re: M1R Fork rebuild

Post by Frank.61 »

I would always prefer re-chroming over a set of (mostly non originals) new stanchion tubes.
Quality and dimension wise it's a better choise and also price wise (count on approximately £160-£200 incl. aligning for a set of tubes).
There are a lot of replica's but regularly they have deviant length, inner dimensions, lack of wholes etc.

Have done it a few times ..... 9 out of 10 times it's better than new (although the original Marzocchi M1R chrome is also very good).

Good luck!

Frank
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010
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paso750
paso grand pooh-bah
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Re: M1R Fork rebuilds

Post by paso750 »

Alternatively, new stanchions are available for the 906 but I don't know if they are the same as the 907 stanchions ?
the answer would be no but they may still work assuming the inner dimensions of the fork legs are the same which they probably are. The internal parts of the 906 & 907ie forks have identical part numbers.
I couldn`t find any info about the length of the right stanchion tubes but the left one of the 907ie is 640mm, the one of the 906 is 630mm (and the one of the P750 is 580mm). So if you lower the fork in the triple trees a little it should work. Of course being a centimetre shorter you`d also need shorter fork springs.
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ducinthebay
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Re: M1R Fork rebuilds

Post by ducinthebay »

paso750 wrote:While I have no experience with any suspension shop specially not in the UK, there`s for example http://www.pittedforks.co.uk
Nice to see someone is doing this. I searched a few years back, and could find nobody in the States that would do it. Ended up finding new legs, which weren't cheap.
Let us know what he quotes you for a set of legs. I might pay the post from California to have them done.

Cheers, Phil
Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.
arp489j
Posts: 39
Joined: Sun Oct 30, 2016 9:05 pm
model: 907 I.E.
year: 1993
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Re: M1R Fork rebuilds

Post by arp489j »

ducinthebay wrote:
paso750 wrote:While I have no experience with any suspension shop specially not in the UK, there`s for example http://www.pittedforks.co.uk
Nice to see someone is doing this. I searched a few years back, and could find nobody in the States that would do it. Ended up finding new legs, which weren't cheap.
Let us know what he quotes you for a set of legs. I might pay the post from California to have them done.

Cheers, Phil
The company I am using is called DYNASURF in the U.K. They arrange collection and return. Price to check straightness, straighten if necessary, grind and hard chrome is GBP135 for the pair plus VAT. They are a large company who specialise in industrial / heavy plant hydraulic cylinders, oil & gas, aerospace etc. Motorcycle fork stanchions are a sideline. Surface hardness is important but so is surface finish. Too highly polished means the seals will run dry and be destroyed very quickly. Too rough is good for oil retention and lubricating the seals but won't please the MOT tester....
RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE sold May 2017
1993 DUCATI 907IE sold September 2017
1995 TRIUMPH DAYTONA SUPER III
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paso750
paso grand pooh-bah
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model: 750 Paso
year: 1987
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Re: M1R Fork rebuilds

Post by paso750 »

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Frank.61
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Joined: Fri Jul 24, 2015 11:21 am
model: 750 Paso
year: 1989
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Re: M1R Fork rebuilds

Post by Frank.61 »

It's Ohio but they do rechroming motorcycle stanchions, $240 a pair....

http://www.unitedsurfacefinishing.com/home

Frank
Bimota SB4-S - 1984
Ducati Paso 750 - 1989
Suzuki SV1000S - 2008
Ducati Monster 796 abs - 2010
thefudginator
Posts: 9
Joined: Fri Mar 11, 2016 9:16 am
model: 750 Paso
year: 1989
Location: UK

Re: M1R Fork rebuilds

Post by thefudginator »

HI RB. Have you had the forks back yet? If so, how would you rate the work that was done? I have two sets I need re-chroming. Cheers
Paso 750 Yellow in bits
Paso 750 Red x 2 (one running)
Paso 906 in bits.
It is a habit I cant seem to give up!
arp489j
Posts: 39
Joined: Sun Oct 30, 2016 9:05 pm
model: 907 I.E.
year: 1993
Location: UK

Re: M1R Fork rebuilds

Post by arp489j »

Forks not back yet but should be by the middle of the week. I will let you know and post photos, if I can figure out how too... Not had much luck with photbucket....

Bought the new fork seals from the BMW people "Motor Works" - £27.70 for the set with postage.

Got the new timing belts and will try the guitar tuning app on my Windows phone for tensioning. Apparently I need 100 to 110 Hz which is Piano key No.24, or halftone between A2 and G2 :-)
RB

1980 LAVERDA JOTA
1982 HESKETH V1000
1985 LAVERDA SFC 1000
1993 DUCATI 907IE sold May 2017
1993 DUCATI 907IE sold September 2017
1995 TRIUMPH DAYTONA SUPER III
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