New Boardman Pro 29er seat tube issue

It does need reaming, they clean up and “size” the bore, they don’t increase the diamete

What do you think ‘sizing’ the bore does if it’s not increasing the diameter???!

In all liklihood the reaming tool will be kicked off concentric by the offending tang of metal which will effecively ovalise the bore slightly. You’re hand-holding the reamer – it will go anywhere its pushed.

Much better to just file/sand of the offending tang.

Would a cylinder honing kit fit inside a 31.6mm diameter tube?

If you get the correct sized tool yes.
I’ve done a few frames after they’ve been powdercoated and still had a load of grit in the seatube after shotblasting and also a custom built Ti frame.
It’s a method that was recommended to me by the king of beardybikebuilders himself (Jeff Jones)
Just go easy and keep trying the post until you get a nice smooth insertion. 😯 🙂

Thanks singlespeedstu going to buy that kit.

7600e ,did you get a new post?
I now have one they swapped out of a Boardman CX which is a Matt finish rather than the gloss of the original. It hasn’t scored again so far but slightly irks me that it’s a different finish to the bars and stem but they might get upgraded in time anyway .

Anyway,its been nice to get out and actually ride it,really impressed with it.How are you liking yours?

Unfortunately not yet. Waiting for a richey one delivered. Im not totally happy either its a different finish.

Yeah it’s a great bike for the money. Loving the 11spd and reba’s especially but swapped the saddle instantly – has to be the most uncomfortable saddle ever!

seat tube reaming tool will sort this out very quickly, used with cutting fluid

done this many times on different bikes (we had some Cambers badly finished coming through a Spesh concept store a few years back)

right tool for the job. very simple for a competent mechanic to sort. finding a reaming tool though? We didn’t have one in the company (cycle surgery) so I had to borrow one from nice guys at Kinoko, who we’d helped in the past

7600e,i wasn’t sure about the saddle either. First time out it seemed very firm, but I adjusted the position and last time out it wasn’t so bad. Probably will end up replacing it but will give it a few more miles before deciding.
Esher shore, how much would this cost? Asked local LBS but they either don’t do it or have a31.6 tool.

Esher shore, how much would this cost? Asked local LBS but they either don’t do it or have a31.6 tool.

I’d expect to pay £20-25 for their time. The more difficult problem is finding someone with the cutting bit in the right diameter for your seat tube

Had the same issue on my Boardman Pro 29er.

Seatpost was a mess, properly ****, put my finger in the seatube tube and there was indeed some burrs where the seat stays meet the the seat tube. Got a half round file in there and tidied it up.

Problem was the seatpost was now so badly scored its was roughing up the seat tube every time I moved it.

Binned the original seatpost shimmed the seatube to 30.9mm and bought a nice new Race Face Turbine post.

Problem now fixed permanently and as a bonus all my bikes now use 30.9 seatposts!

Would be nice if a brand new bike didn’t have these issues but sorting it myself was probably a lot less hassle than pissing about trying to get Halfords – 15 miles away – to sort it

EDIT

Oh and I should add, despite the issue, it really is a brilliant bike an absolute flying machine. If you get one though make sure you have the shop check the seat tube before you accept it!

My Stumpjumper FSR had this problem.

I sorted it with a large diameter dowel wrapped in wet & dry. Took about 5 mins. The shop took the original seatpost & put it on their demo bike & gave me the post from the demo bike.