Note: Hope 38.5mm QR clamp has to be ordered separately! (I won't take orders without it)
Note: the photos with the red Brompton show the Model 2 which is no longer available and has been suceeded by the Model 4.3
The #Seatposthugger Model 4.3 has a changed design of the top and the bottom plate. The top plate now features a 6mm hole so you can attach the Brompton magnetic pedal holder, nicely tucked inside. (yes, Brompton now also has a magnetic holder, a product I'm making and selling for several years. Mine is compatible with the time proven MKS Ezy Superior system and fits a lot of pedals in the broad range) This magnetic pedal holder from Brompton normally doubles as a brake nut for the front brake at the back side of the fork crown. Now only Bromptons from 2017 onwards have a big enough hole in the fork crown to fit this Brompton pedal holder. So if you like their QR pedals and the matching holder but have a pre 2017 bike you can mount the holder inside the Model 4.3 Seatposthugger.
Comparing the #Seatposthugger Model 4.2 to the model 4.1: the lower plate no longer wraps around the full tube circumference and is now similar to the upper plate. This minimizes braze time and Acethylene gas and it's still more than strong enough. Just like the 4.1 it has a brazed on clamp boss for adjusting the play on the seatpost for when the Hope QR clamp is released. This enables easy sliding and wear adjustment on all different seatposts for Brompton. The original Brompton seat sleeve is no longer glued in place, but installed using carbon assembly paste. This causes enough friction to prevent rotation of the sleeve inside the seatposthugger. This minimizes production time (and thus price increase) and the Cyanoacrylate glue is a nasty chemical. Sleeve replacement, if ever needed, is a very simple job now. The sleeve doesn't need any reaming, play is adjusted with the bolt at the bottom.
The seatposthugger is a luggage carrier which is designed to hold the Brompton front carrier block and clamps onto your Brompton 31.8mm seatpost. It's only compaitble with the plastic carrier block of Brompton and copies made by other brands like Trigo. It's not compatible with CNC-ed aluminium carrier blocks and not with the Eerder metaal #Allsteelcarrierblock
- Bronze flame brazed and Tig fusion welded
- 4130 thin wall Chromoly tube and laser cut Domex 700 high strength steel plate sections (the real deal! it's amazing)
- including the original Brompton front carrier block,
- low friction Hope clamp with quick release in Silver, black, orange, purple, blue or red
- the original Brompton seat post sleeve
- weight complete Model 4.1 including the Brompton front carrier block: 340 gram
Installing the Seatposthugger Model 4.2:
So in case you have a standard or extended (60 mm longer plain) seatpost you just remove the saddle and slide the Seatposthugger onto the post.
The Model 4 can be adjusted to slide freely by opening the Hope Quick release clamp and tighten or loosen the clamp bolt at the bottom to get the desired smooth sliding. It arrives pre adjusted but not all seatposts are exactly the same. This bolt is not meant to be used for clamping, just for play adjustment. You might need to re-adjust the Hope Quick release as well depending on your seatpost.
Happy riding!
