Attaching/drilling to a hard seat

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belgiangoth
Posts: 1206
Joined: 29 Mar 2007, 4:10pm

Attaching/drilling to a hard seat

Postby belgiangoth » 13 May 2019, 12:03pm

I was wondering about attaching:
* bottle cages
* rear light
* an attachment for a saddlebag
to the back of my recumbent's seat.

I figured that it would be a case of taking out the drill - there's already a diy headrest attached by the previous owner. Is there something I should consider before I irretrievably damage it? I'm IKEA furniture level of DIY skills so a little nervous, but the cost of bespoke recumbent solutions is even more frightening.
If I had a baby elephant I would let it sleep in the garage in place of the car. If I had either a garage or a car. (I miss sigs about baby elephants)

nigelnightmare
Posts: 459
Joined: 19 Sep 2016, 10:33pm

Re: Attaching/drilling to a hard seat

Postby nigelnightmare » 13 May 2019, 3:01pm

Fit the rear light to the headrest post/rods.
^^"ICE trikes" sell a bracket for this .^^

The more holes you drill in the seat the weaker it will be.

Have a look online to see how other's have done theirs.

HTH

belgiangoth
Posts: 1206
Joined: 29 Mar 2007, 4:10pm

Re: Attaching/drilling to a hard seat

Postby belgiangoth » 13 May 2019, 3:35pm

nigelnightmare wrote:Fit the rear light to the headrest post/rods.
^^"ICE trikes" sell a bracket for this .^^

I've sen that, but I don't have n ice headrest. Mine is more of a flat bit of metal than a tube.
If I had a baby elephant I would let it sleep in the garage in place of the car. If I had either a garage or a car. (I miss sigs about baby elephants)

ONETAL
Posts: 16
Joined: 3 Oct 2018, 10:51am

Re: Attaching/drilling to a hard seat

Postby ONETAL » 13 May 2019, 3:48pm

WP_20180822_001.jpg


I made a light bracket out of an aero bar extension. I've also drilled holes for bottle cages with out a problem on hard shell seats.

nigelnightmare
Posts: 459
Joined: 19 Sep 2016, 10:33pm

Re: Attaching/drilling to a hard seat

Postby nigelnightmare » 13 May 2019, 4:01pm

I take it you have the body link seat.
HP Velotechnik sell a bottle mounting plate for two bottles behind the seat. 49 euros.
Alternatively you could zipp tie one to the seat mount tube.

Pictures would help.

recumbentpanda
Posts: 209
Joined: 6 Apr 2009, 12:13pm

Re: Attaching/drilling to a hard seat

Postby recumbentpanda » 15 May 2019, 8:46am

Drilling into any kind of fibre reinforced laminate is a bit of a mission. Unless precautions are taken, the drill bit can easily skate about and wander on the gel coat. Glass fibre is horrible crunchy stuff, like trying to accurately drill shreddies. Carbon fibre even worse, plus the dust and debris is hazardous to health. Having said that, the hard shell seat on my bike has sixteen holes drilled in it as part of the original design, for mounting the seat itself, plus racks and headrests, -strength does not seem to be an issue on either the glass or carbon versions.

PDQ Mobile
Posts: 2523
Joined: 2 Aug 2015, 4:40pm

Re: Attaching/drilling to a hard seat

Postby PDQ Mobile » 15 May 2019, 9:01am

I sucessfully drilled one to take a Klikfix bar bag mount.
Just to state the obvious, use largeish washers to spread the load around the hole.