cheers for the video, i bought a bike and it had 30mm seat tube, so only option was to get a 27.2 dropper and shim it but max travel i could find was 105mm so i found this and reamed it to 30.9, and now i have a 170mm dropper!! cheers for the help
I'm in the same situation bro, I have a 2008 Kona Hoss (30 mm) and I'm looking to do the same thing so I can run a 30.9 Satori Sorata Pro Dropper and get 150 mm of travel.
Was in the same position with a 30.4 seatpost. Ordered my reamer and waiting. I do have a small garage fabrication shop so the reamer is useful there too..
Just came across your video and I have done the same thing with my Hyper Hydroform going from the 30.4mm to 30.9mm to install a dropper post. *WHEEL CYLINDER HONE IS A MUCH EASIER WAY TO GO*
I have 30.4 seatpost currently, but my frame is slightly thinner where the clamp cut is at the top and wider at the bottom, currently seatpost has a lot of play. Will I be able to install 30.9 dropper post, dude?
Bit of advise don't insert the tool from a vertical position, if the reamer broke loose and falls into the seat tube then you might have a real hard time getting it out, my self I'll always perform this procedure with the frame fixed in a bike stand or better yet fixed into the jaws of a bench vise, bench vise is a better choice because the frame will not be twisting around then the seat tube will be in the horizontal position to do the work, also use lots of cutting fluid as well, when I purchased my Taiwan made adjustable reamers roughly 40 years ago, the seller said these will only last about one year or so, so you should purchase better Quality reamers, well I bought the cheaper ones and so far so good after doing a thousand plus frames they are still going strong, so to say liberal use of cutting fluids will make your cutters last a very long time, then of course after every use, I will clean my tooling.
I'm in the same situation, I have a 2008 Kona Hoss (30 mm seat tube) and I'm looking to do the same thing so I can run a 30.9 Satori Sorata Pro Dropper and get 150 mm of travel!
I have an old Kona with 30.0mm too, just considering reaming out to 30.9 too, did you do it? I work in an engineering shop but not sure we have the right reamer. Buying a good one is expensive, cheap tools are not worth it when cutting metal 🤔.
@@leo5verling334 Yep sure did! Works beautifully, like it was there from the factory. I did it with a $20 reamer too! God I love when Jerry Riggin' works...😉
thak you for your vid, I bought a new frame and want to use parts from older highend bike, everything fits except the dropper post which is 31,6 and new frame is 30,9... so! 30€ reamer or 300€ dropper? easy choice ;-)
I'm not a normal guy lol proceeded to buy an expensive reamer vs a cheap post this is my idiology as well, rather then buy a post I'd rather buy a bench grinder to trim down the post and get a tool.
Steel frame or Aluminum? Where did you source such a reamer? This may come in handy. Please give longer term feedback as well regarding durability! Cheers from another "not normal" person.
I bought it on a local equivalent of Ebay. Cost me approx $40 for both the tool and the handle. It is an adjustable 29-32mm so it will allow to drill just about any frame I might run into. The frame is aluminium. So far it holds well - as in - catastrophic failure did not happen. But that was after just 100 or so kilometeres.
im planning to do the same on a vintage steel road bike from 26.8 to 27.2, will this be advisable? and additionally should i use 26-29.5mm reaming range? thanks
Advisable - as always - do at your own risk. THe bike I reamed here Is used regularily since this job was performed. Just make sure you have enough seattube thickness. The reamer seems right.
@@TryboBike Do you know where I may purchase one that will work to do the hole from the 30.9mm to a 31.6mm? I've been looking and can't find any such as they are either to little or to big,but none like you have that will do such a change. Maybe I'll try hand sanding it or using a Dremel tool to grind it out such as it is only .7 mm and about like two inches into the tube is all I'll be doing per se such as it is for the Santa Cruz Jackal dirt jumper bike that I don't really need a long tube to go into it such as I don't use the seat for much other than resting a little or to hold with my legs to do no handed tricks and such.
reaming 25 to 27.2 will take 1.1mm of material - so to get a sensible margin of error you would need about 3mm wall thickness of your seattube. Possibly less with steel. I guess - you probably should not do it.
cheers for the video, i bought a bike and it had 30mm seat tube, so only option was to get a 27.2 dropper and shim it but max travel i could find was 105mm
so i found this and reamed it to 30.9, and now i have a 170mm dropper!!
cheers for the help
I'm in the same situation bro, I have a 2008 Kona Hoss (30 mm) and I'm looking to do the same thing so I can run a 30.9 Satori Sorata Pro Dropper and get 150 mm of travel.
Was in the same position with a 30.4 seatpost. Ordered my reamer and waiting. I do have a small garage fabrication shop so the reamer is useful there too..
Just came across your video and I have done the same thing with my Hyper Hydroform going from the 30.4mm to 30.9mm to install a dropper post.
*WHEEL CYLINDER HONE IS A MUCH EASIER WAY TO GO*
I have 30.4 seatpost currently, but my frame is slightly thinner where the clamp cut is at the top and wider at the bottom, currently seatpost has a lot of play. Will I be able to install 30.9 dropper post, dude?
Bit of advise don't insert the tool from a vertical position, if the reamer broke loose and falls into the seat tube then you might have a real hard time getting it out, my self I'll always perform this procedure with the frame fixed in a bike stand or better yet fixed into the jaws of a bench vise, bench vise is a better choice because the frame will not be twisting around then the seat tube will be in the horizontal position to do the work, also use lots of cutting fluid as well, when I purchased my Taiwan made adjustable reamers roughly 40 years ago, the seller said these will only last about one year or so, so you should purchase better Quality reamers, well I bought the cheaper ones and so far so good after doing a thousand plus frames they are still going strong, so to say liberal use of cutting fluids will make your cutters last a very long time, then of course after every use, I will clean my tooling.
I'm in the same situation, I have a 2008 Kona Hoss (30 mm seat tube) and I'm looking to do the same thing so I can run a 30.9 Satori Sorata Pro Dropper and get 150 mm of travel!
I have an old Kona with 30.0mm too, just considering reaming out to 30.9 too, did you do it? I work in an engineering shop but not sure we have the right reamer. Buying a good one is expensive, cheap tools are not worth it when cutting metal 🤔.
@@leo5verling334 Yep sure did!
Works beautifully, like it was there from the factory.
I did it with a $20 reamer too!
God I love when Jerry Riggin' works...😉
@@austinbergen2409 great! That's good to hear, I am going to do it. Just need to get the tool. there's a great deal on the seatpost I want right now.
Great job!
i will try this method to drill out my stuck seatpost
thak you for your vid, I bought a new frame and want to use parts from older highend bike, everything fits except the dropper post which is 31,6 and new frame is 30,9... so! 30€ reamer or 300€ dropper? easy choice ;-)
I'm not a normal guy lol proceeded to buy an expensive reamer vs a cheap post this is my idiology as well, rather then buy a post I'd rather buy a bench grinder to trim down the post and get a tool.
Hi can you do a video on drilling an old frame and convert it into internal cabling
A reamer tool may be used for removing a broken seatpost from the frame
hi!
im such in this situation yet and looking for some information about doing it. could you probably get me a kind of advice? I‘d be very thankful!
Are you weakening the frame?
Steel frame or Aluminum? Where did you source such a reamer? This may come in handy. Please give longer term feedback as well regarding durability! Cheers from another "not normal" person.
I bought it on a local equivalent of Ebay. Cost me approx $40 for both the tool and the handle. It is an adjustable 29-32mm so it will allow to drill just about any frame I might run into. The frame is aluminium. So far it holds well - as in - catastrophic failure did not happen. But that was after just 100 or so kilometeres.
@@TryboBike if you see this could you let me know if this is still held up well without breaking long term?
The reamer should always go for one direction never go backwards with the reamer 😂😂😂
Is it okay i have seat tube 30.4 and i have 30.9 dropperpost is it fit?
what item you use to how your seatpost to 31.6 your hole
you made your frame seatpost weaker especially if its aluminum frame..btw nice video
im planning to do the same on a vintage steel road bike from 26.8 to 27.2, will this be advisable? and additionally should i use 26-29.5mm reaming range? thanks
Advisable - as always - do at your own risk. THe bike I reamed here Is used regularily since this job was performed. Just make sure you have enough seattube thickness.
The reamer seems right.
If it's 753 or another thin-walled tubing, don't do it!
Hi, can you tell me the specific name of that tool, so I can search for and buy it? Best regards, Johannes
It is an Adjustable Hand Reamer - 29-32mm reaming range.
@@TryboBike Thanks mate :-)
@@TryboBike Do you know where I may purchase one that will work to do the hole from the 30.9mm to a 31.6mm? I've been looking and can't find any such as they are either to little or to big,but none like you have that will do such a change. Maybe I'll try hand sanding it or using a Dremel tool to grind it out such as it is only .7 mm and about like two inches into the tube is all I'll be doing per se such as it is for the Santa Cruz Jackal dirt jumper bike that I don't really need a long tube to go into it such as I don't use the seat for much other than resting a little or to hold with my legs to do no handed tricks and such.
what item you use to work?
Is that possible if I want to use 27.2 seatpost into my old mtb 25 seatpost?
reaming 25 to 27.2 will take 1.1mm of material - so to get a sensible margin of error you would need about 3mm wall thickness of your seattube. Possibly less with steel. I guess - you probably should not do it.
@@TryboBike.. I think like that too. I m very scare to do it but so hars to find 25 seatpost with modern design now. Anyway thanks for the info 😊
Where you get the tool
Amazon - or more specifically, a local equivalent.
how is this tool called?
Reamer