Shock dilema!

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#16 Post by **mangocrazy** » Sun Dec 18, 2011 11:23 pm

In that case, I'd say it's obviously the rare early Mille Ohlins. If the spring code is legible that would be the clincher. But the real deal is how it feels on the road, as you say.

D-Rider · #17 Post by **D-Rider** » Sun Dec 18, 2011 11:36 pm

Aladinsaneuk wrote:it came off my falco.... so i know - as do a few others who have ridden it - it rides well...

.... but how it performs when you are sitting on it on the back of an RAC truck is not really what most of us are looking for ......

HowardQ · #18 Post by **HowardQ** » Mon Dec 19, 2011 12:31 am

I may have got this wrong, but surely the thickness of the spring coils will give the answer. Any spriing that was designed for a Falco or early Mille with the same linkages, will be similar to the thickness of the Falco Blue spring coils, (as is the case with the White spring shock), the later Mille coils should be thinner and this should be easy enough to simply measure.
Obviously if you can get the details off the coils it is better.
The later Mille arms have a different leverage hence the softer spring for a similar or probably stiffer overall spring rate than the Falco with different linkages.
Thicker coils Falco linkages.
Thinner coils later Mille linkages.
Or is this too simple?

D-Rider · #19 Post by **D-Rider** » Mon Dec 19, 2011 1:04 am

It depends not only on the diameter of the spring wire but also the torsional modulus of spring material, the mean diameter of the coils within the spring and the number of free coils in the length of the spring.

Provided that those other things are the same, you could tell which was stiffer by looking at which had the thicker wire.

However other parameters (such as number of coils) are likely to be different.

blinkey501 · #20 Post by **blinkey501** » Mon Dec 19, 2011 7:31 pm

Right just been in garage and measured up both ohlins shocks....
The one from splatrat has the code AP8240 in addition to that there is some more numbers 109300. The coil thickness is 11.31mm according to the verniors...

The shock from aladinsane has Ohlins racing around the bottom ring of the shock. The shock code is AP8230 with additional numbers of 106730...
The spring is 12.43 mm. But the spring has numbers 1093-54/140359 written on one of the coils.

Both springs have identical coils which is six/seven coils.
That is all the information i can find on both shocks

#21 Post by **mangocrazy** » Mon Dec 19, 2011 8:02 pm

1093-54/140359 breaks down as follows:

1093 - 150mm (5.9") free length.
54 - 140 Nm / 14.27 kg/mm / 799 lbs/in spring rate

The fact that the spring has a 140 Nm / 14.27 kg/mm / 799 lbs/in spring rate proves conclusively that it's fdesigned for Falco triangles/dogbones. as that is exactly the same spring rate as the Falco Blue spring.

Congratulations - you have one of the very rare Mille Ohlins that is interchangeable with a Falco shock and designed for Falco linkages...

flatlander · #22 Post by **flatlander** » Mon Dec 19, 2011 8:22 pm

well mine says Ohlins Racing 629-01 isnt that an armchair one?

and whilst looking for it I found the white one I forgot I had a complete blue one grubby more linkages equilateral triangles and some that appear to have been made as they are about 1mm different and a polished blue one, who says you can't polish a turd with an ohlins spring 1091 31/95 031

blinkey501 · #23 Post by **blinkey501** » Mon Dec 19, 2011 8:29 pm

mangocrazy wrote:1093-54/140359 breaks down as follows:

1093 - 150mm (5.9") free length.
54 - 140 Nm / 14.27 kg/mm / 799 lbs/in spring rate

The fact that the spring has a 140 Nm / 14.27 kg/mm / 799 lbs/in spring rate proves conclusively that it's fdesigned for Falco triangles/dogbones. as that is exactly the same spring rate as the Falco Blue spring.

Congratulations - you have one of the very rare Mille Ohlins that is interchangeable with a Falco shock and designed for Falco linkages...

Thanks Graham that has really made my day

#24 Post by **mangocrazy** » Mon Dec 19, 2011 9:02 pm

1091 31/95 031 is the 'standard' Mille spring

1091 = 160mm (6.3") free length
31/95 = 95 Nm / 9.68 kg/mm / 542 lbs/in - in other words a standard 00-03 Mille Ohlins spring.

#25 Post by **mangocrazy** » Mon Dec 19, 2011 9:05 pm

blinkey501 wrote: Thanks Graham that has really made my day

Glad to be of service...

flatlander · #26 Post by **flatlander** » Mon Dec 19, 2011 11:19 pm

flatlander wrote:well mine says Ohlins Racing 629-01 isnt that an armchair one?

and whilst looking for it I found the white one I forgot I had a complete blue one grubby more linkages equilateral triangles and some that appear to have been made as they are about 1mm different and a polished blue one, who says you can't polish a turd with an ohlins spring 1091 31/95 031

Okay 110 347 is the only numbers I can find at the top end of the shock so fiull set would be
Ohlins Racing 629-01 at the base and 110 347 small stamped at the top cannister is horizontal legnth same as blue shock to the eye at least

HowardQ · #27 Post by **HowardQ** » Mon Dec 19, 2011 11:28 pm

I agree with all the points Andy said, but the thicker coils for a Falco spring was the right after all, so it's not a bad quick check for starters until you can tie up the numbers to be sure.
Glad you got it sorted and enjoy the extra comfort as well as handling.
Nice early Christmas present.

#28 Post by **mangocrazy** » Mon Dec 19, 2011 11:35 pm

flatlander wrote:Okay 110 347 is the only numbers I can find at the top end of the shock so fiull set would be
Ohlins Racing 629-01 at the base and 110 347 small stamped at the top cannister is horizontal legnth same as blue shock to the eye at least

The only Ohlins document I have is for the spring codes. I can decipher them, but I don't have any idea about codes on the shock body; sorry.

The Mille Ohlins and the standard Sachs will be very similar in length, but I suspect the Mille Ohlins will be a few mm longer. Measure both shocks between the mounting bolt centres and that will give you their true lengths.

What is it you're hoping to find out? From the spring code it sounds as if you have a standard 00-03 Mille Ohlins, which will need the 00-03 Mille linkages.

flatlander · #29 Post by **flatlander** » Tue Dec 20, 2011 12:01 am

the spring was a spare that was put onto the polished turd ie the polished blue body I have no number for the ohlins that is on the ohlins if that makes sense

[table]Road & Track Shock Absorbers, Fork Spring Kits
Shock absorber Fork Spring kit
Aprilia
year Part No type P/C Length Stroke Spring
RSV 1000
Mille
1999-01
AP 840
46PRCLS
24
321 +5/-1
56
1093-54

RSV 1000
Mille
2002-03
AP 841
46PRCLS
24
321 +6/-0
65
1093-31

RSV 1000
SL Falco
2000
AP 941
46PRC
16
319
55
1095-49
8663-10 300
RSV 1000
R 2004

AP 351
46PRCLS
24
313+3,5/-2,5
63,5
1093-31

RSV 1000
Tuono 2003-04
AP 841 46PRCLS 24 321 +6/-0 65 1093-31
[/table][/code]

#30 Post by **mangocrazy** » Tue Dec 20, 2011 7:47 pm

I think this is the information you were trying to convey...