Modify Cable Stop To Fit Shimano Proprietary Type A Downtube Shifter Boss

[@RJTheBikeGuy]

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[@1a2b3c4.]

Isn't easier to buy type B cable stops ?

[@robertferriter6908]

I have had a beautiful old Cilo for years that has the identical problem. The previous owner had converted it to a single speed rather than deal with the issue. I have had a vaguely similar process in mind, but to watch you actually get it done is inspirational. Now I, a mere bike mortal, can attempt it with a reasonable expectation of success. I bet that this clip doesn't apply to more than a handful of people world wide, so I especially appreciate that you took the time to make this ! Thank you.

[@bigfootandbananaman4746]

I love how you think outside of the range of a regular bike mechanic. You will come up with creative solutions to get it done. Nice job

[@wesleybrooks1538]

A 8-32 machine screw is very common & almost identical to an M4.5-0.75, so that’s what I used when I found myself in exactly this situation. Thanks for the video - I followed your instructions to file down the cable stop and it worked perfectly!

[@thetoolman3]

Great tutorial. Rather than rethreading the screw, you can buy stainless steel M4.5 button head cap screws from places like McMaster Carr. The only downside is you have to buy 50 at a time. But if you don't already have a tap & die set, a $15 box of screws is cheaper.

[@davidjordan6587]

I'm really glad you took something that didn't work, yet really inexpensive to purchase, but used ingenuity to resolve the immediate issue. I've learned so much from your videos. Please keep them coming!

[@that70sschwinn]

Nice craftsmanship RJ!

[@5adamjb]

Thanks for walking us through this process RJ

[@IanMay-o1k]

My vintage Cilo Frame had this problem and I fixed it using your very good instructions. Thank you.

[@LanceMcGrew]

A lot of obvious passion and motivation goes into these projects. And on top of that, taking the time to KZbin it all. You are certainly one of the good ol' boys :)

[@MrSegersall]

One of the Great ol' boys. It's just amazing the knowledge in this man's head

[@jasonw7053]

I will probably never do this but it was still interesting to watch!

[@raywhite5523]

Excellent, I am a lot like you, using ingenuity, and making things work. I rally like you videos. Very educational and very watchable. Thank you

[@rickearnest6431]

Great job RJ, explained perfectly!

[@chrislukes9037]

This is a great video. I found this some months back when I picked up frame with these bosses (80's Lotus Eclair), but never got around to modifying the stops/finding the screws, etc. Now I'm revisiting as I just picked up a second frame that has these (Shogun 1000). Going to get some good filing practice now!

[@alexanderb4067]

Hey RJ, I had the same issue when upgrading my steel bike to fit a modern (2011) shimano ultegra group a little more than a month ago. This video was timed really bad from my perspective! I honestly went through all of your videos to find some reference material to aid me in the process. I ended up removing most of the boss with a hand file since my screwtapper snapped halfway in. Then I drilled a hole through the frame at the boss part for some support (it's holding up fine for now) and clammed the two cable stops with a threaded rod and two nuts. Besides that little work around (I am still not sure if it is completely safe), I used many of your videos to help me in the transformation process. My gratitude for your useful videos! Keep up the good work. ;-)

[@bigc7t]

NICE!!!, its the little fine details that make the big differences.

[@richardfabrizio8998]

Way to improvise RJ. Looks perfect nice job

[@earnestr35]

Do you remember what the original downtube shifters were used for that type of boss or what would work? Thanks I really like your videos, they are the best on KZbin! Thanks again, Rick

[@trekkie9942]

Great video RJ! I love these vids where you adapt parts to make your own. 👍

[@blueridgebikeman]

Thank you for posting this, RJ. I'm dealing with the EXACT same problem. Your demonstration is a huge help. One question: Where did you purchase the die that converts the M5 screw to the M4.5?

[@RJTheBikeGuy]

ebay.

[@InDaBurbs]

hey well done. I was pretty distraught as I had the same exact situation on an 80's Apollo V I just got. Thanks again for coming up with a solution!

[@rinaldyfaustino8352]

Hi Rj, I currently face the same dilemma, except it's the other way around. I have a Shimano TypeB DTshifter and and a more common square type of mount on my frame. I'd really like to use this shifter on this frame, what do you think are my solutions/ diy's would be? Pls again share some knowledge, it would mean the world to me. Thank you for all the videos and help you provide us, I hope this message finds you well.

[@johnnyutah23]

That was great. One of the most frustrating things about building bikes are the slightly incompatible parts.

[@porkchop955]

That's pretty slick fix!

[@rotormotored]

This is the Kind of Stuff I'm talking about. Great Job.

[@RJTheBikeGuy]

I have a bunch of videos where I build stuff. This is a pretty good one: kzbin.info/www/bejne/aoXOm3RqZtl9bZo

[@johnbaca8692]

I also thought about filing down the little key on the frame, but I might file the frame even if it's taped off. Also, the metal on the cable stop is probably easier to file than the steel on the frame. Good times in the shop/garage!

[@RJTheBikeGuy]

The little key keeps the cables stop from rotating...

[@speedtrip1647]

Great conversion RJ, really like your attention to detail 👍

[@tonyconnors1342]

Great video amazing when ever i have a problem you have the answer thank you.

[@digable007]

That was really interesting... I have been running across alot of SS(single speed) frames on ebay and they don't have cable stops just the cable guides. I wish you would make a brazing video or some type of dongle that fits into the cable guide to act as a cable stop. The gears will shift up to a certain rear cog dimension but on the larger cogs it takes too much force to shift and the cable comes develops a curve and pops out of the guide. Do you think there is an easy fix for this?

[@MrJonas2255]

Nice job RJ! I'll definitely do this next time I run across one of these

[@AntonBabiy]

Thanks for sharing! I didn't even know these cable stops existed 🙂

[@RJTheBikeGuy]

I have used them in a few videos where I convert from downtube shifters to brifters.

[@Speedy.V]

Better than stock. Great job. 👍

[@dagsssr]

RJ, congratulations for the precise job! Are the bosses welded on the frame? Is it possible to remove them?

[@warrenzausa3145]

Boom! What a great hack there RJ 👍

[@franciscoschupinski9186]

Man, U save my projet and my day. thank you

[@Ronin_Texas]

Awesome way to kill a rainy afternoon. Great job. 2 thumbs Up.

[@LuisGonzalez-hl2ft]

Usted tiene mucho talento y es muy buenísimo en lo que enseña . Saludos desde Miami Florida . Me gustan sus videos Son muy instructivos

[@timsmith9758]

Good job man! Let's see you ride that bike now.

[@tomahrendt3021]

Thank you for this VERY useful video!

[@paule.maurice1521]

Well done , common sense repair . Good way to cover unused spuds .

[@MORTEF8]

Those bosses are for the very first generation of SHIMANO DURA-ACE shifter, sold as a set with CRANE rear derailleur during in 1970's.

[@Bikeops2021]

Great job RJ

[@MrSegersall]

I've two questions, while fully servicing a Specialized Sirrus (1989/1991??), that was previously converted. 1) after removing the bolts the cable stops do not come out, should I force pull those out with some pliers or should they come out easily (they do not)?

[@MrSegersall]

Second question, as this is a steel frame, I'm thinking in drilling holes in for converting to internal cable routing (top rear brake and under down tube just after the cable stop adaptors), is that something feasible or am I just lost? Thank you for your time and help

[@MrSegersall]

Never mind about stuck stops, a little heat and they did come out.

[@jeremeyfisher9500]

Thank you. Now i have a solution to my problem. Only difference is i'm installing downtube shifters.

[@mixalispetroto]

Thanks RJ. You just saved me a world of head scratching and swearing.. love your videos.

[@gRuHa89]

I'm just wondering if all that machining didn't make the cable stop too weak, and if it won't break eventually. Please keep us posted!

[@RJTheBikeGuy]

It will fine.

[@C345OFR]

I'm the type of guy who thinks of these things but messes up the execution; very satisfying to see the successful outcome!

[@mauriciotorres6285]

Niceeeeee.you know what I want to do, is make 2 holes in the upper tube of the frame of my vintage vianchi campeon de italia to put the cable housing inside and make it look like the modern bikes, if I find 2 plastic peaces to put infron of the holes I think I maybe do that

[@RJTheBikeGuy]

Personally, I would leave the bike as it is.

[@mauriciotorres6285]

@@RJTheBikeGuy good

[@Deakbalu]

Great craftsmanship! Is there a workaround to adapt standard downtube shifters(for square base bosses) on these Shimano specific bosses?

[@RJTheBikeGuy]

I don't know. I haven't tried. That might be a little trickier.

[@billbill2032]

RJ,you are amazing!!!

[@matthewearle4115]

good video rj. nice work!

[@ovash1]

Nice job, very informative. I do stuff like this but I always thought it was cheating. Thanks, good to know it isn't.

[@rickh6963]

Another awesome video.

[@CraigLafferty]

As usual . . . amazing job!

[@beaudanner]

Screw into piece of wood to hold while filing....genius

[@kazebo1291]

Excellent video,,,,,,,can you make a video of how to replace the down tube boss...

[@RJTheBikeGuy]

Take it to a frame builder who has the tools.

[@monkeysize]

Wow, great fix! But I wonder...wouldn't it be easier to file down the nub on the boss?

[@RJTheBikeGuy]

Then there would be nothing to keep to cable stop from rotating.

[@monkeysize]

Oh right. I thought the inside of the cable stop had notches to fit the post on the boss. 👍🏽

[@RJTheBikeGuy]

Nope. The new ones have the square base that holds it.

[@wheelgood]

Nice job!

[@batatadoida]

You are a genius

[@mikedalittle]

What is your bike's brand? I hardly identify mine, but it similar with yours, only single shifter on downtube.

[@RJTheBikeGuy]

This is a Ross signature model which helps you not at all. You need to research YOUR bike.

[@brianmerryman6743]

Damn cool RJ!

[@domadiful]

Love your videos RJ! I have an old shimano 105 setup on my steel Lemond and the front derailleur has stops similar to these in your video, but in the rear derailleur side of the downtube the stop is not a barrel but a chrome switch that has a few clicks. Any info on this? It seems to make a significant adjustment on the rear derailleur anytime I adjust but I can’t seem to find any info online as far as proper adjustments, etc. thanks!!!

[@RJTheBikeGuy]

Just a variation of this.

[@domadiful]

Cool. Figured as much. I took small and large chainrings off my triple and converted from drop bars to flat bars so I added a new shimano Sora shifter and kept the old shimano 105 rear derailleur. I tuned the rear derailleur so that everything is working smooth EXCEPT every couple of pedals the rear derailleur makes a click and seems like it is beginning a shift but doesn’t actually shift. It’s consistent on every gear and I tried turning barrel adjusters both ways all the way and still happens. I’m wondering if it’s an incompatibility issue between the Sora shifter and 105 derailleur? What do you think? Thanks!

[@RJTheBikeGuy]

No, the Sora should be compatible with the 105. They are both SIS. kzbin.info/www/bejne/jKvVoXZtn9etbrc

[@mauriciotorres6285]

Yes

[@nurroyan84n89]

Beli stopernya dimana.

[@allentang8033]

What do you do if you have a proprietary boss base that's messed up and can't find a replacement?

[@RJTheBikeGuy]

Shrug.

[@yaronmtb8848]

Niceeeeeeeeee job 👍👌

[@BIGDO13]

this guy is a fucking wizard...

[@isoux]

Perfect idea thanks ^-^

[@LPlata]

Good job!

[@bullwhipjohnson8247]

If it's a 1x why put another cable stop for a front derailer? Much easier to just modify another screw to keep any moisture or debris out of the downtube. Nice job though.

[@RJTheBikeGuy]

Actually, I am putting a cover on the other side. But it will be the same process for the cover.

[@emploice.muswashghans]

Good job screwing things up! ;)

[@franmrasgo]

Great job.

[@JP-om3ou]

Who does better KZbin bike videos? RJ or Calvin Jones from Park Tool? Interested to see everyone's thoughts... Park Tools should sponsor his channel nonetheless

[@erhan6095]

neat job

[@Liofa73]

Good job.

[@borisspessot536]

Why do you need another one for the other side? Is that not a 1x bike?

[@vicktorcahoj1774]

I like that bike

[@mixtemixte2545]

great job !!!

[@david5184]

Brilliant!!!

[@tonysworkshop2558]

Great video!

[@nimarahmanian4489]

Tony's Workshop the video is 10 minutes long a d you commented 6 minutes after he posted it. How?

[@tonysworkshop2558]

I commented while I was half way through the video

[@Ad-wv8zt]

Awesome !!!

[@taichihead42]

Brilliant

[@chrismad1344]

Excellent

[@nick37781]

the cable stop on the left side of my bike is stuck on the cable boss, any ideas?

[@RJTheBikeGuy]

Remove the screw and pry it off.

[@Jakob728]

Hi RJ! Found your channel a couple of weeks ago and I love it! Im currently trying to restor an old bike ive found and im having massive trouble to find small spare parts thats not possible to save. Like a lock nut for the handle stem, brake cable hangers and so on.. Do you use any online stores to find the parts you need? I live in sweden so amazon often have problems with the shipping and i havnt found any good local bike store yet. Keep up the good work! And how many bikes do you have? Maybe a tour of your work place and bike collection would make a fun video? Take care!

[@RJTheBikeGuy]

I use Amazon. You will have to find your own resources in Sweden.

[@Jakob728]

Thats what i thought, the search continues! Thanks for the reply.

[@davidmaclean8024]

Did you find out what kind of downtube shifters used to fit on there?

[@RJTheBikeGuy]

OId Shimano shifters with Proprietary Type A downtube mounts. It's in the title. Do you mean what model? It didn't care. I wasn't mounting downtube shifters.

[@fearthebeardexample180]

How to removed stock outer downtube

[@literoadie3502]

M5 screws have a pitch of 0.8 mm. I would have just bought some M4.5 screws.

[@virgilfulton4426]

I did a similar sort of modification for a 1985 Centurion. I couldn't find a local source for M4.5 bolts of adequate length, and couldn't find any source online that would sell them at less than $25.00+ quantities. They are probably out there, but, not that common.

[@RJTheBikeGuy]

I searched for M4.5 screws and couldn't find anything similar to these screws. It was a lot easier and cheaper to buy the dies on ebay and make my own.

[@LanceMcGrew]

mcmaster.com item 90910A962 Lifetime supply and bit more than an $8.00 ebay China die but less effort :)

[@literoadie3502]

@Lance McGrew I agree, I forgot Mcmaster, they're great aren't they!

[@chrislukes9037]

@@LanceMcGrew super helpful!

[@beaudanner]

This makes me want a metal 3D printer even more.

[@jeffreyspencer4266]

How to fit downtube cable stops band on

[@Bricklinsv1970]

Good job unfortunately most people dont have shop tools available LOL!

[@RJTheBikeGuy]

A file and a drill? I bought the die on ebay for a few bucks.

[@Bricklinsv1970]

Bench clamp drill press screw threader ets LOL!

[@RJTheBikeGuy]

If you can't adapt, and figure out how to do it without these specific tools, this is not for you. Try knitting.

[@markholm7050]

McMaster Carr has M4.5 x 0.75 screws in Torx, button head, 18-8 stainless, 8, 10, and 12 mm length. www.mcmaster.com/#standard-rounded-head-screws/=1d5rsdf Yes, hex drive would be nicer for this job, but they don’t have those.

[@yardsalecycles]

Why put both sides when it's only a 1x?

[@mrN3w7]

To balance the bike.... :D

[@RJTheBikeGuy]

Actually I will be putting a cover on the other side, but I will have to do same modification.

[@TheMilford]

It’s actually Shimano type A.

[@TheMilford]

goo.gl/images/CMUBce

[@RJTheBikeGuy]

Did a search, and you are right. I found a lot of stuff online calling these type B.

[@zivizivi2328]

no grease this time disappointing lol

[@nimarahmanian4489]

2nd comment

[@OnecyclistfromYerevan]

Good job!