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How to drill a frame?
#11
Seat tubes are normally a lot thinner tubing, whereas BB is thick so thread can be cut into it
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#12
I think BB shells have thicker walls than main tubes, and a small hole on the underside of such a short tube prolly doesn't affect the structure/strength enough to matter.
With internal butting on most metal frames the wall thickness can vary dramatically from ends to middle.

As above, I'd think brazing would counter the loss, I would expect the tubes with holes cut for cable/hose routes are specifically designed around having the hole in that exact spot, and have added strength around to negate the effect.

It's very likely I'm talking outta my butt, guessing things I don't actually comprehend Smile

=== edit ===
Soz, didn't notice Paul had already answered that on the next page Smile
Jay Dubster.
Moved to Radstock (nr Bath) but often in Medway & up for a pootle.

2015 Whyte T130 Yari
2009 Trek 8000
2014 Boardman Team Carbon (yawn) 
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#13
Noticed this today on STW.  Didn't realise the thread was started five months ago!

http://singletrackworld.com/forum/topic/...rb-stealth
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#14
Proper Job !!
Like the drill off center thing too, gives a better line for the hose and looks neat.
Jay Dubster.
Moved to Radstock (nr Bath) but often in Medway & up for a pootle.

2015 Whyte T130 Yari
2009 Trek 8000
2014 Boardman Team Carbon (yawn) 
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#15
(02-01-2017, 05:16 PM)dubster Wrote: Proper Job !!
Like the drill off center thing too, gives a better line for the hose and looks neat.

Its also easier to drill off centre as you cant easily get the drill angle if you want it centred as the down tube will get in the way :-)
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#16
That was one of the threads that I'd seen that gave the most detail, will pull me finger out on this soon. Got a 150mm KS lev stealth that needs a fix and service so the cost of this is minimal.
Cheers for the feed back guys.
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#17
(02-01-2017, 11:00 PM)Skid Wrote: That was one of the threads that I'd seen that gave the most detail, will pull me finger out on this soon. Got a 150mm KS lev stealth that needs a fix and service so the cost of this is minimal.  
Cheers for the feed back guys.

Matt, I can let you use a 90 degree drill we have at work if it helps.
Like this https://www.cromwell.co.uk/shop/power-to...stBid=tztt
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#18
Thanks Lee. Il get the dropper fixed and if the angle of the dangle proves difficult il be great full for one thanks buddy.

Also do you think this is mad Lee? I'd appreciate your opinion. Won't hold it against you if it all goes tits up, promise.
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#19
Just seen these http://enduro-mtb.com/en/best-dropper-se...can-buy/7/
A fair few places selling them now and apart from the lag when you press the button and the button being on the small size. All the the reviews give it the thumbs up. Quite like the thought of not fafffing with stealth cables and of course not putting holes in a perfectly good frame.
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#20
(02-03-2017, 11:07 PM)Skid Wrote:
Also do you think this is mad Lee? I'd appreciate your opinion. Won't hold it against you if it all goes tits up, promise.

Sorry chief hadn't seen your reply.
Holes are bad M'kay! is the simple answer. Lots of people get away with it however. A seat tube sees a lot of load and a hole could become a starting point for a crack.  Is the seat tube butted? Drilling in a bit where there is a change of thickness would be really bad.

I like my droppers fully mechanical, never had an issue with two gravity droppers. its an interesting time for droppers lots of companies have new ones imminent, Shimano, E13 and 8 pins all interest me.
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