"Tire Pump Seatpost" Used as a Pneumatic Pouch with a Tube When the Seatpost is Removed

By frequently putting in the air of the bicycle tire you can drive comfortably and reduce the risk of puncture. Although it is worrisome about power shortage and increase in mass, it is a place to carry with air, but it is possible to use a seat post (saddle bar) indispensable for a bicycle as a pneumatic doppel ganger "Tire pump seat post"is. Since the sample arrived at the editorial department, I actually installed it and tried it.

DOPPELGANGER® [Doppel Ganger] Bicycle Brand Tire Pump Seatpost DSP138-BK / DSP138-SL
http://www.doppelganger.jp/option/dsp138/


"Tire pump seat post" wrapped in packing material arrived.


I took it out. Seat post diameter 27.2 mm · Saddle strut length 350 mm and color has black other than silver.


Aluminum alloy tire pump seat post was actually measured 392 g.


On the side is "DOPPELGANGER" and brand name are included.


The cradle adopts "Integral toggle type" that can easily fix the saddle rail with one bolt.


Spinning the black grip on the underside of the seat post ....


This means that the internal bar expands and becomes a pump as follows.


The grip doubles as a tube storage mouth, pulling out the tip ......


You can remove the tube from inside.


The silver base is for rice valves, but you can also handle British / French style valves by attaching the supplied gold colored base. Maximum air pressure 70 PSI · Hose length is 195 mm.


The tube mounting opening is located just under the cradle.


That's why I actually try replacing the seat post.


First remove the seat post ......


Install the tire pump seat post and securely tighten the nut.


Next remove the saddle from the original seat post removed ......


Loosen the bolt of the cradle.


Fit the saddle rail so that it fits into the groove and adjust the angle.


Finally, if you tighten the bolt it is easy to install.


From the appearance it is completely invisible to put in the air.


By the way, size check is necessary because it can not be used for bicycles whose seat post diameter does not match. If you are a bicycle made by DoppelgangerCompatible model pageYou can check from.


In addition, it can be seen from the following movie that the air is actually put in "Tire pump seat post".

When you put air in the tire with Doppelgerger 'Tire pump seat post', it feels like this - YouTube


To put air in the tire, remove the seat post as it is ......


Push up the tip of the grip with a nail to take out the tube.



Connect directly to the mounting hole under the saddle.


It has become a strange saddle I have not seen.


Connect the tube to the valve ......


Hold the tip of the bar and pump it with Sposhupo and you can put in air.


When putting the saddle on the shoes and using it, it is possible to put in the air with the force without hurting the saddle.


The following small portable air bag is not equipped with a tube, so it will be in a cramped position or power shortage, but the tire pump seat post does not need to carry an air bag and removes the seat post It was an idea product that can put air firmly by putting just waist.


In addition, Amazon's price of "Tire pump seat post" is now 3267 yen (tax included).

Amazon.co.jp: DOPPELGANGER (Doppelganger) tire pump seat post DSP138-SL silver 【pump seat type post】 seat post diameter φ27.2 mm effective saddle support length 250 mm [British style · Buddhist style · American type correspondence] made of aluminum alloy Dedicated valve adapter included: Sports & amp; Outdoor