pump mount, flat frame

[cirian75]

ok, my Cube 29er only has water bolt mounts on the lower tube, non on seat tube

and while its not a square tube, it very flat in the area on the bolts meaning regular pump mounts won't fit.

this gives you the idea



Ideas?

Its a commuter so a pump is a must.

Edited by cirian75 on Tuesday 6th October 06:04

[CoolC]

Would these kind of thing work on the down tube?

[yellowjack]

Same issue on my road bike. Flattened, oversized carbon fibre tubing on the down tube, and a huge asymmetric seat tube near the bottom bracket means that every bracket I've offered up to the cage mounts has fouled the tube, and so my pump has stayed in my jersey pocket. The bracket (for a Lezyne Road Drive) fits perfectly onto the traditional round steel tubes of my old Falcon roadie from the early 1990s.

One potential solution is a couple of spacers and a pair of longer bolts to lift the bracket away from the tubing. Apparently Topeak supply these with their pump brackets. A friendly LBS gave me a set but I've yet to try them. Another solution might be to get a 'custom' bracket machined to suit the tubes, if you've got a friendly fabricator/engineering company/machine shop nearby. Or contact the pump manufacturer/importer/distributor, and ask if they already make/supply an extended bracket that would solve the problem. After all, you and I are unlikely to be the first, or only people to have found this problem, what with oversized, and flattened tube forms becoming more common on new bikes these days.

[gazza285]

Get one of these and cable tie it to the seat tube. Wrap a bit of insulation tape round the tube to protect the frame. Made by Topeak.

[ClassicMercs]

Plenty of pumps are available with retainers that screw through the bottle cage mounts - I have a Birzman that sits under the bottle cage - and another that sits in place of the bottle cage.

[IroningMan]

6mm nylon numberplate nuts cost peanuts and make perfect spacers - I use a couple to keep the bottle cage clear of the front mech clamp on my old Allez.

Readily available in black from Halfords or your handy local fastenings supplier.

[TwistingMyMelon]

JOB JOBBED:



Id try using nuts spacers to space it up a bit

I stopped attaching my pump to the frame though, I found it got too much crap on it from the road/tracks and shortened the life of it.

[cirian75]

gazza285 said:

Get one of these and cable tie it to the seat tube. Wrap a bit of insulation tape round the tube to protect the frame. Made by Topeak.

Bought

http://www.sigmasport.co.uk/item/Topeak/Race-Rocke...

cheers matey

[finishing touch]

Drill two holes.
Insert two M4 threadserts.
Professional job done.

Paul G

[cirian75]

finishing touch said:

Drill two holes.
Insert two M4 threadserts.
Professional job done.

Paul G

into a brand new bike with a warranty, no thanks.

but an good idea for 2nd hand bikes.

[finishing touch]

cirian75 said:

finishing touch said:

Drill two holes.
Insert two M4 threadserts.
Professional job done.

Paul G

into a brand new bike with a warranty, no thanks.

but an good idea for 2nd hand bikes.

My Trek has them. My Cannondale has them.
In fact I was under the impression threadserts were the industry standard for putting threads into tube.

Paul G

[deckster]

cirian75 said:

Its a commuter so a pump is a must.

If it's a commuter then it goes in your bag, surely. Anything frame-mounted will get nicked pronto unless you physically keep your bike by your desk all day.

As an aside, you have very different requirements for a commuter hack than I do

[cirian75]

bike gets locked in the plant room at work in the basement at home, its pretty safe.

[mikees]

Mini pump in back pocket surely ?

[cirian75]

mikees said:

Mini pump in back pocket surely ?

Rule 30 lol.

[ALawson]

Try this chap, he may well be able to make you one.

http://www.racewaredirect.co