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[Closed] Brompton bar type/height - help!

 sb88
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[#11830907]

Hi,

Just ordered a Brompton - I cycle to appointments for work city-wide but hip and back issues mean using public transport more and more, so wanting to combine the two. Also more convenient for visiting family on train.

But - I had just assumed the bars could be swapped out to tweak fit and hadn't thought much about the implications on cable length, folding, etc.

I also didn't realise the 'H' type model comes with a taller stem/steerer too.

I need the grips to be at least level with, preferably 1-2 inches above saddle height, to prevent further hip/back damage. I know some people will have their opinions on this - this is the only way I can ride without 48 hours of subsequent pain and I have had to move on several of my more sporty bikes. I'm trying to put off car use as long as I can.

So, I ordered the 'M' type model and am hoping someone with the same model can check the saddle-bar drop at my saddle height (70.5cm). This would need to be a post-2017 model.

Thanks in advance!

SB


 
Posted : 06/04/2021 8:49 am
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Is that saddle height from centre BB to top of saddle? And with 175mm cranks?


 
Posted : 06/04/2021 9:32 am
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I have a 2019 B75 with the extended seatpost and M bars as standard. From memory, with the seat at full height the saddle is about level with the grips.

I don't have it with me just now but I can check the measurements this evening if you like.


 
Posted : 06/04/2021 9:44 am
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Now there is no P bar option, Brompton did change there Stems/Bars a bit so now there are three different stems.

H uses a taller stem (below the hinge), but the stem above the hinge and bars are the same as M bars/stem. Current M bars have less rise than the pre2017 ones, but the stem was made longer to compensate.

S stems are longer, but also are canted forwards further (reason some older Brompton bags don't work with S bars).

I'm tall 6'5" and use an S stem with a riser bar. M cables work fine. This ends up somewhere between H and M height, but with a bit more room from the saddle.

Brompton used to have height data for all bar options, but now the link seems to be behind a password.

Anyway measured straight up from the ground M bars are just a fraction over metre and H bars are about 60mm higher. H bars are very slightly more rearward due to extra length in the stem.

Centre of bottom bracket is 273mm ish from ground.


 
Posted : 07/04/2021 10:55 pm
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Ps did you order direct from Brompton?


 
Posted : 07/04/2021 10:56 pm