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Frame Building | Forum profile
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Forum profile page for Frame Building on http://www.mtbr.com.
This report page is the aggregated overview from a single forum: Frame Building, located on the Message Board at http://www.mtbr.com.
This forum profile page summarizes the general forum statistics such as: Users Activity, Forum Activity, and Top Authors, which are reported in either a table or graph below for a given reporting time period.
Additional forum profile information for "Frame Building" on the Message Board at http://www.mtbr.com is also shown in the following ways:
1) Latest Active Threads
2) Hot Threads for Last Week
Warning: These statistics are generated using 'best efforts' and can experience delays and reporting errors at times. Please note that such statistics do not constitute a forum's popularity and/or exact posting volumes at any given reporting period.
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Posting activity on Frame Building:
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Week
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Month
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3 Months
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Threads:
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34
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111
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329
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Post:
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198
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502
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1,443
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Frame Building Posting activity graph:
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Top authors during last week:
user's latest post:
Aluminum coefficient of thermal...
Published (2009-11-07 15:00:00)
Quote: Originally Posted by LarryG The steerer is aluminum. Its stuck. It will expand at the same rate. If its cost effective, cut the steerer out, and try again. This time with more thermal advantage. And be quick about it. Wait... how is it supposed to be installed normally?
user's latest post:
Hydroforming and the future of...
Published (2009-11-05 10:10:00)
Quote: Originally Posted by BadHabit In this perhaps an insight into negative views. I have been thinking that as well, but regardless it has been very interesting reading the responses. I know it has made me think twice about what I thought was a superior approach in many ways. Thanks all.
user's latest post:
titanium effected by heat?
Published (2009-11-07 19:00:00)
[quote=scooter916] My question is this, will holding the heads of the bolts under the flame of my torch to get a blueish purple color effect the strength of the bolts? QUOTE] No. but if you have spares to be messing around with can you send them to me please?
user's latest post:
Some expert advise...
Published (2009-11-07 01:02:00)
Quote: Originally Posted by 96gfhkek Then explain it to me with baby steps, if you would be so kind Your joking right?
user's latest post:
Dummy Axles for 80/20 Jig
Published (2009-11-07 01:02:00)
Anvil does have dummy axles spaced at 120, 130, 135, & 145 exact. Just saying....
user's latest post:
Fixing a cracked frame - brazed...
Published (2009-11-05 18:08:00)
Quote: Originally Posted by TimT My question is what caused that. I'd guess quick and dirty brazing, maybe just using a gasfluxer. Pinholes like that are pretty common in bare frames and can be caused by a good number of things, not all bad. Powdercoating doesn't cover them very well. Ok if the headtube isn't cracked it looks like you've got the start of rust spider webbing then so check that out too. That's not a...
user's latest post:
Some expert advise please2
Published (2009-11-07 02:01:00)
Could the heat treatment be something I could do myself?
user's latest post:
Some expert advise please2
Published (2009-11-07 02:01:00)
Quote: Originally Posted by 96gfhkek Could the heat treatment be something I could do myself? No. Just use a v-brake. The bike will work fine
user's latest post:
Post mount revisited
Published (2009-11-07 01:01:00)
Didn't you hear, there's a recession on! Seriously, a cheaper tool with some simple adapters/spacers would be fine. It's not rocket science to shim things out/in for PM stuff anyway. -Walt
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Latest active threads on Frame Building::
Started 12 hours, 40 minutes ago (2009-11-09 11:18:00)
by Walt
This question is pretty specifically addressed there.
If you have experience welding thin wall steel, this is a very easy job. If you don't, you will just destroy your frame. It's that simple.
I would recommend not using the rack mount to attach the disc caliper. Get a tab from Paragon and modify it as needed. Put a seat/chainstay brace on there as well.
-Walt
Started 16 hours, 40 minutes ago (2009-11-09 07:18:00)
by Smokebikes
That was a real nice frame.........all I can say that you can always try to repair it but I think it's toast and is time to hang it on the wall........RIP
Started 2 days, 22 hours ago (2009-11-07 01:01:00)
by zank
2nd for a $100 tool and adapters.
Started 4 days, 13 hours ago (2009-11-05 10:08:00)
by unterhausen
due to the symmetry of the cracks, I suspect the dropouts were spread after building. Or some significant event happened to that frame that doesn't have much to do with build quality. I wouldn't hesitate to fix that assuming that is all that is wrong with the frame. I doubt this would effect the strength of the frame at all.
You just have to remove enough paint to fix the braze and whatever...
Started 2 days, 18 hours ago (2009-11-07 05:00:00)
by scooter916
This isn't really pertaining to frames but figured a few of you have experience and general knowledge of Titanium and this seems like the best forum for this.
I have quite a few Ti bolts on my bike and was playing around with some old stripped out bolts and my torch, I noticed the Ti starts to turn colors when heated.
My question is this, will holding the heads of the bolts under the ...
Started 2 days, 9 hours ago (2009-11-07 14:00:00)
by LarryG
Quote:
Originally Posted by BentChainring
EEK!
Cryofits gone wrong at work usually end up being removed with large hydraulic jacks. We use LOTS of LN2 for ours... Next time try Dry Ice and Methanol. Stay with the 250F, I wouldnt go much above 250 or 300 with heat treatable aluminum alloys for more than 2-5 minutes.
Might need to be getting a new ...
Started 6 days, 4 hours ago (2009-11-03 19:56:00)
by rbrstr
The reason the tube crushed that way is because there is no support inside the tube. you are trying to stretch the skin on the outside of the bend whilst shrinking the skin on the inside of the bend all at the same time, something quite literally has to give
In the absence of a tube bender or a mandrel, filling the tube with sand is an excellent way of doing this. we have a cnc tube ...
Started 1 month, 3 weeks ago (2009-09-19 23:03:00)
by Smokebikes
Damn that is nice! Very cool ride.........
Started 5 days, 13 hours ago (2009-11-04 10:09:00)
by Mr.SBC
A good friend of mine built one also for his fiancee, he wrote up a website telling about how he constructed it. He told me about all of his resources but that was the extent of his help. I learned how to build my own jig, designed my own frame to my measurements and learned how to cure bamboo correctly. In my opinion, this is not a project for someone to just jump into. I have a background of ...
Started 2 days, 21 hours ago (2009-11-07 02:01:00)
by Blaster1200
Quote:
Originally Posted by 96gfhkek
Could the heat treatment be something I could do myself?
Sure! If you have the proper equipment and know what you're doing. It's a safe bet that if you're asking that question, the real answer is "no."
Search Google to find this information - this is not a good place for that discussion (...
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Hot threads for last week on Frame Building::
Started 5 days, 13 hours ago (2009-11-04 10:10:00)
by pvd
Round tubes suck. I wish I could get butted hydroformed tubes just like I
wanted. Ha!
Started 4 days, 13 hours ago (2009-11-05 10:08:00)
by unterhausen
due to the symmetry of the cracks, I suspect the dropouts were spread after building. Or some significant event happened to that frame that doesn't have much to do with build quality. I wouldn't hesitate to fix that assuming that is all that is wrong with the frame. I doubt this would effect the strength of the frame at all.
You just have to remove enough paint to fix the braze and whatever...
Started 5 days, 13 hours ago (2009-11-04 10:09:00)
by Mr.SBC
A good friend of mine built one also for his fiancee, he wrote up a website telling about how he constructed it. He told me about all of his resources but that was the extent of his help. I learned how to build my own jig, designed my own frame to my measurements and learned how to cure bamboo correctly. In my opinion, this is not a project for someone to just jump into. I have a background of ...
Started 4 days, 13 hours ago (2009-11-05 10:08:00)
by AZ.MTNS
Started 6 days, 4 hours ago (2009-11-03 19:56:00)
by rbrstr
The reason the tube crushed that way is because there is no support inside the tube. you are trying to stretch the skin on the outside of the bend whilst shrinking the skin on the inside of the bend all at the same time, something quite literally has to give
In the absence of a tube bender or a mandrel, filling the tube with sand is an excellent way of doing this. we have a cnc tube ...
Started 5 days, 13 hours ago (2009-11-04 10:08:00)
by AZ.MTNS
I will assume that you are talking about frames constructed of steel . One
of the goals while constructing a frame is to keep the heat used in the
heat affected zones at reasonable levels . It is possible to heat an area
to levels that negativley effect the base materials , reducing its strength
or even ruining it . If welded properly these effects are minimal and do
not negativley affect the ...
Started 6 days, 4 hours ago (2009-11-03 19:56:00)
by pvd
First things first. You need to measure chainline properly. see: http://www.pvdwiki.com/index.php?tit... el_Dimentions
You could space out the crank if you have the room. Then use an e-type or DM FD. It depends on what you screwed up and how much.
Started 2 days, 22 hours ago (2009-11-07 01:02:00)
by AZ.MTNS
Quote:
Originally Posted by 96gfhkek
Then explain it to me with baby steps, if you would be so kind
Your joking right?
Started 16 hours, 40 minutes ago (2009-11-09 07:18:00)
by Smokebikes
That was a real nice frame.........all I can say that you can always try to repair it but I think it's toast and is time to hang it on the wall........RIP
Started 2 days, 22 hours ago (2009-11-07 01:02:00)
by sessionrider
I am putting together my own frame jig out of 80/20. I have everything and
I am almost finished with it. The only thing I need is a good sourced for
some dummy axles. I am doing wet layup frame building. Since there's no
heat involved there is no distortion or sucking in, thus the Anvil axles
won't work well. Anyone have a source for phased dummy axles that are
spaced exactly 130, 135, etc. Any ...
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