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Old 02-09-09, 11:02 AM   #1
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Simplex RD on Campag 1010B hanger - can it be done?



Been mulling this over ever since I got this SLJ. Is it possible? I fear that the larger, threaded hole is too large for the retaining bolt that this SLJ uses (of course, one can always use a larger bolt with a spacer to take up the gap), and that the Simplex stop against the Campagnolo DO will cause the RD to cant a few degrees clockwise of its proper position, putting excess strain on the two pivots.

Anyone have experience with this?

-Kurt
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Old 02-09-09, 11:28 AM   #2
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Yes, it can.

Kurt, check out this link on my website and the subsequent picture:

http://cyclespeugeot.com/Threading.html



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Old 02-09-09, 01:46 PM   #3
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Originally Posted by cudak888 View Post


Been mulling this over ever since I got this SLJ. Is it possible? I fear that the larger, threaded hole is too large for the retaining bolt that this SLJ uses (of course, one can always use a larger bolt with a spacer to take up the gap), and that the Simplex stop against the Campagnolo DO will cause the RD to cant a few degrees clockwise of its proper position, putting excess strain on the two pivots.

Anyone have experience with this?

-Kurt
Works fine:



The Simplex dropouts used an unthreaded 9mm derailleur hanger. Campy dropouts are 10mm diameter. The difference is not a concern.
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Old 02-09-09, 05:39 PM   #4
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Yours appears to be identical to mine. I haven't seen another one Do you know what model Motobecane they came from?

I haven't tried it, but I think they will also work on those oddball Huret dropouts.

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Old 02-09-09, 07:15 PM   #5
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Yes, it can.

Kurt, check out this link on my website and the subsequent picture:
Looks like I've found my next Paramount RD then

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Yours appears to be identical to mine. I haven't seen another one Do you know what model Motobecane they came from?
Sorry to say that I don't. Bought it with a non-matching Simplex FD (looks almost like the SJA 102 on Velobase, but remains an imperfect match. An SLJ it is not) at the 2/8 Volksblast swap. Fellow had 5 Paramounts (4 more at home), a Bob Jackson, Rigi, Schwinn Sports Tourer, and a Coppi; so I'd assume that it probably came off a Grand Record that was spec'ed with SLJ (if such a thing exists). That remains an educated guess, however.

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Old 02-09-09, 07:31 PM   #6
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I have the same FD. I assume that they used it because it has a housing stop and the SLJ FD's don't.
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Old 02-09-09, 07:34 PM   #7
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Send me a pic of yours. I'll post one of mine. This I have to see...

-Kurt
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Old 02-09-09, 08:04 PM   #8
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Old 02-09-09, 08:13 PM   #9
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-Kurt
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Old 02-09-09, 08:23 PM   #10
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Now you need the shifters and the DT stop to go with those.



These are the 1st generation shifters. Those derailers should have the later type.
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Old 02-09-09, 08:24 PM   #11
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SJA 102's. If the inner plate is 'deep' (for lack of a better term) it would be a SJA 103.

Jim
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Old 02-09-09, 08:24 PM   #12
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Now I know why I shouldn't have traded that set to you

-Kurt
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Old 02-09-09, 08:33 PM   #13
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SJA 102's. If the inner plate is 'deep' (for lack of a better term) it would be a SJA 103.
I assume that the SJA 102 went through a few casting revisions then, for the main body of mine does not match the one on Velobase:

http://www.velobase.com/ViewSingleCo...0-44acf60369d2

Note the curve on the body forward of the adjuster screws on the Velobase example. Mine is curved reverse of these SJA 102's.

-Kurt
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Old 02-09-09, 08:36 PM   #14
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Yours had a broken collar, so I made these out of them. They don't have the little nub at the bottom, so they're a later version.



Shimplex
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Old 02-09-09, 08:44 PM   #15
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I remember those barcons. Which machine did you mount them too?

This is my first foray into the French components - do you mean the nub that I think I can make out on that right shifter in the previous photo? Never knew those things were on earlier versions in the first place...

-Kurt
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Old 02-09-09, 09:04 PM   #16
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I've never used them. I want to put a full polish on them before I put them on the PX10, but the finish on the pods is impervious to both Jasco paint stripper and easy off. What could it be?

Now I remember somebody here that there is an even earlier version than these and he gave an explanation for the existence of the nubs that made sense at the time, but I can't remember what it was.



My stainless socket head bolts are not correct, but they'll never rust.

This is the stop you need for those derailers.


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Old 02-09-09, 09:10 PM   #17
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Roughly finished aluminum. I dare say the only cure is to sand and contour the "smooth" areas until they feel like satin, smooth the sanding grit up to 1500, then stick them on a buffer a-la Ray Dobbins.

Better yet, trade them for a pair of the later open-end versions.

Do you recall what the earlier models looked like, just out of curiosity?

-Kurt
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Old 02-09-09, 09:24 PM   #18
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Roughly finished aluminum. I dare say the only cure is to sand and contour the "smooth" areas until they feel like satin, smooth the sanding grit up to 1500, then stick them on a buffer a-la Ray Dobbins.

Better yet, trade them for a pair of the later open-end versions.

Do you recall what the earlier models looked like, just out of curiosity?

-Kurt
I don't think so. The oven cleaner would have turned them black. They're coated with something.

I have some experience with polishing aluminum. I guess I should shoot some close ups of the PX10. I went through a couple of buffing wheels on that project.

I read it on BF, so it should still be here somewhere. The picture may be gone, though.

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Old 02-09-09, 10:03 PM   #19
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Hmm - then they must have clear anodizing over them. The oven cleaner didn't do anything? Surprising.

I dare say it would be more of a risk then anything else, given the dotted relief pattern and logo; but chroming - as you did with your NR cranks - might be an option, perhaps?

-Kurt
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Old 02-10-09, 04:37 AM   #20
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I noticed that the 1984 Motobecane catalogue shows the SLJ 6600 and SJA 102 derailleurs on their top end racing bike, the Team Champion. The derailleurs shown in the catalogue photos actually feature the same tri-color "M" logo which was used by Moto at least during 1979 to 1984, maybe earlier. The derailleurs you guys have look a wee bit earlier than the '84 versions (those rear derailleurs had dark plastic pivot bolt caps).

The design of the 6600, with its short pulley cage hanging low off the bottom pivot bolt, made it best for largest freewheel cogs up to only around 24 teeth and a total chainwrap capacity of around 22 teeth - which was certainly fine for racing bikes. And the dropped parallelogram design (pretty much like most any modern derailleurs today) made shifting across cogs of say 13-24t very clean and efficient.

Sorry about this grainy image ... original catalogue photo was only 30 mm x 38 mm.

[This bike was fitted with a 13-18 6-speed freewheel and 42 x 52 chainrings]

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Old 02-10-09, 05:56 AM   #21
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I assume that the SJA 102 went through a few casting revisions then, for the main body of mine does not match the one on Velobase:

http://www.velobase.com/ViewSingleCo...0-44acf60369d2

Note the curve on the body forward of the adjuster screws on the Velobase example. Mine is curved reverse of these SJA 102's.

-Kurt
Kurt,

I had to flip back and forth a few times to see the detail your referring to!!!!! There appears to have been a casting change. I have a 1984 catalog with a picture identcle to yours ID'ing it as a SJA102 and a 1986 catalog with a SJA103 'mountain gear' deraileur with the Velobase feature.
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