I can't take apart this Suntour derailleur!
08-07-09, 03:47 PM
#1
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I can't take apart this Suntour derailleur!
I'm trying to replace one of the pulleys (Suntour Cyclone MII) but no one knows how to undo the screws. This is what I have:
https://www.disraeligears.co.uk/Site/...283500%29.html
This is what it looks like:
What's been tried:
Screwdriver
Needle nose pliers
Need tip clamp
I'm disappointed that I may have to replace this derailleur but I hope someone can help me out.
https://www.disraeligears.co.uk/Site/...283500%29.html
This is what it looks like:
What's been tried:
Screwdriver
Needle nose pliers
Need tip clamp
I'm disappointed that I may have to replace this derailleur but I hope someone can help me out.
08-07-09, 04:04 PM
#2
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I had that exact same problem once. I couldn't figure it out and scrapped the derailer. Wish I could be more help.
08-07-09, 05:15 PM
#3
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I think that the round, recessed part with the notches is a nut that holds the pulley axle to the cage. Looks like you need to use a straight screwdriver on the slotted bolt and a small screwdriver in one of the notches on the nut.
Have you tried that?
Have you tried that?
08-07-09, 05:20 PM
#4
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Try a smallish needle nose pliers with an end in each slot.
edit: oops you tried that? and it didn't work? bugger.
edit: oops you tried that? and it didn't work? bugger.
08-07-09, 05:57 PM
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Maybe this diagram of an earlier model will help.
Can anyone recommend me a nice derailleur similar to the Cyclone MII (light and shiny) for cheap?
08-07-09, 06:24 PM
#7
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Suntour made a special T-tool to undo the nut shown in your second photo. I've got one but they were rare.
08-07-09, 06:31 PM
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08-07-09, 08:05 PM
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08-07-09, 08:13 PM
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I remember doing one once with a really good snap-ring pliers (with right angle tips), they can take more torque than a needle-nose (and you'll risk ruining the joint of a good pair of needle-nose pliers, so don't force it). The thing you need is good quality snap-ring (or circlip) pliers with hard tips, those little nuts are on tight!
08-07-09, 09:49 PM
#11
aka: Mike J.
Couldn't you make a tool functionaly similar out of an old flat blade screwdriver and a Dremel tool cutoff disk or small grinding wheel?
08-07-09, 09:54 PM
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it wouldn't give you nearly the same leverage, but perhaps you could make it from a 10mm hollow axle and drill a hole through the axle for the handle or sandwich a flat bar with a hole in it between some locked nuts (4 nuts total?)...
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
08-07-09, 09:55 PM
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08-07-09, 10:46 PM
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https://images.google.com/imgres?imgurl=https://www.dongchengtools.com/english/cx/upImg/%E5%8C%85%E5%A1%91%E6%9F%84%E5%A5%B6%E5%AD%90%E9%94%A4.JPG&imgrefurl=https://www.dongchengtools.com/english/chp.asp%3FclassID%3D80&usg=__-oXT1m7E-3R-KW_3ngsXq7PD4jI=&h=1556&w=2074&sz=191&hl=en&start=12&um=1&tbnid=CAT8clRAO1OaZM:&tbnh=113&tbnw=150&pr ev=/images%3Fq%3Dsledge%2Bhammer%26imgsz%3Dl%26hl%3Den%26rlz%3D1B3RNFA_enUS238US277%26sa%3DN%26um%3D1
08-08-09, 04:54 AM
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