DIY Internal Dopple...
 

DIY Internal Doppler Routing

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I’ve drilled a seat tube before to route a dropper cable but that’s been it.

The routing on this looks very ‘home made’.  Would you drill a down tube in two places to internally route the cable?  Looks a bit dodgy to me.

EBay link


 
Posted : 14/01/2026 6:12 pm
 P20
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That probably wouldn’t bother me. The driveside chainstay would be more of a concern. And it’s very strong money!


 
Posted : 14/01/2026 7:14 pm
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If you do get it, the sound of your worrying thoughts will probably just come and go…

 

IGMC


 
Posted : 14/01/2026 7:46 pm
garethjw reacted
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It will be fine I'd say but it's a heavy, unspringy lump of a frame that's about 150 too much 


 
Posted : 14/01/2026 7:58 pm
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Posted by: P20

That probably wouldn’t bother me. The driveside chainstay would be more of a concern. And it’s very strong money!

 

What have you spied re the chsinstay

 


 
Posted : 14/01/2026 7:59 pm
 P20
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IMG_0026.jpeg


 
Posted : 14/01/2026 9:18 pm
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I've done this to frames myself but found a nice grommet to make it look neat. That's in no way structural - I might make sure the hole is nicely rounded on receipt, however that seems a bit pricey for an old steel frame..?


 
Posted : 15/01/2026 12:30 pm
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I did this (only on the seat tube) on the 45650b frame I used to have, it was fine.

And, I have find memories of (both) my 45650b's ... But there is absolutely no way I'd spend anything like £300 on that frame. £100-150 tops!


 
Posted : 15/01/2026 1:24 pm
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Did you get a shift on with this?


 
Posted : 15/01/2026 4:30 pm
 IHN
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230 quid?

For that?

Behave.


 
Posted : 15/01/2026 4:38 pm