Folding Bikes - Converting Brompton M bars to S Type?

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PDR
07-08-09, 07:20 AM
I wonder if anyone can confirm what is involved in this conversion?

I let my Dad have a ride of my S-Type 2 speed Brompton last Sunday and now he wants one. I asked him about the S bars and he said he really liked them and says that is the type he wants. :thumb:

The problem is that I have phoned all the local dealers and none have got any S-Types in stock. I’ve mentioned the B-Spoke option but he is not willing to wait the 6-8 weeks... when he sets his mind on something he wants it now! So I’ll be at the Brompton dealers with him first thing Saturday morning.;)

So I’m considering buying him an M type and if he does not like it I will change the bars.

I know I would have to buy:
S-type stem
S-type bars & grips
S-type brake levers
S-type brake & gear cables, or might I be able to shorten the existing cables to S-type length?
S-type cable gatherer (not required if I use original cables)

Is there anything else that I have overlooked?

The S-type bars are far and away my preferred choice but my Dad has not tried an M-type yet, so he may find that he likes them once he rides an M-type.

I have even been looking on e-bay but it seems to me that even second hand bikes are fetching prices near to what I can buy a new one for.


Folder4life
07-08-09, 08:28 PM
Wow, that seems like alot of work and extra money because your father wants it now! I would test drive the M-type, not buy it. It is completely different from the S-type.

PDR
07-09-09, 02:15 AM
I test rode some M-types myself last year and did not like them as much as the S-type bars. I’m going to take my S2L-X along to the Brompton dealers so he can test ride one of their M-types back to back with my S-type in the car park.

If he like the M-type I will buy it for him, if not I’ll contact one of the online dealers and try and get a 3 speed S-type for him.

I’d really like to go the B-spoke route but I know he just does not have my level of patience (I waited 10 week for my S2L-X Raw Lacquer Brompton to arrive).

My Father was 75 last month and is still fit and healthy so I think he will enjoy riding the bike. We both shoot at military rifle ranges and it involves a lot of walking so the Brompton will prove useful.


bykerouac
07-09-09, 03:26 AM
Hi PDR, instead of a flat S bar why not try a 2.5 inch MTB bar riser? If you go this route all you have to replace is the bar and nothing else, check out my mod here (http://www.bikeforums.net/showthread.php?t=487234&highlight=mods).

PDR
07-09-09, 04:16 AM
Hi PDR, instead of a flat S bar why not try a 2.5 inch MTB bar riser? If you go this route all you have to replace is the bar and nothing else, check out my mod here (http://www.bikeforums.net/showthread.php?t=487234&highlight=mods).

Thanks for that suggestion, it is certainly gives me another option.
Did you have to shorten the brake and gear control cables at all?
Regards,
Paul

bykerouac
07-09-09, 04:36 AM
No shortening at all. The cables seem a bit slack but if you pull them and redistribute the curves (if you know what I mean) the bike shifts, brakes and folds perfectly. At the very least I would regrease the cables while you're at it, and think about adding the V-brake noodles.

I compared it with an S bar Brompton and the handlebars are about the same height.