This is the 4th iteration of the #mainframehugger luggage platform, inspired by the original StandupforBrompton platform from plywood. StandupforBrompton supplied me the U bolts and sleeve nuts for the last four years, which was very nice!. This fourth version is more universal than previous versions with two ways to attach it to your frame.

1. One being the U bolts as before, but this now with countersunk stainless steel sleeve nuts, this method is for Brompton frames only. The U bolt set is included with each platform set.
2. The second method is strapping it to your Brompton mainframe, stem! or saddle with Voilé straps for fast on and off your bike. Don't use this method if your kids stand on it! You can find the 12" Voilé straps in the Voilé straps section. Use two 12" Nano straps for attaching the platform to you saddle and seatpost. Use two 12" standard Voilé straps for attching the platform to you main frame.

The differences with the fifth version is the shape of the four big corner cutouts and there's a dimension fault in the bottle boss holes. It's not safe to use the two holes in the middle as there's not enough material left to make a reliable connection to your bottle bosses. For use on a Brompton this will not be an issue at all and it looks the same to the eye. You save €10,- by buying this one instead of the Mark V . Just 7 platforms being made like this.

The main purpose of the #framehugger is to strap a narrow (dry)bag, case, box, tent or other narrow (maybe even long) stuff safe and secure to your Brompton.

I personally use it to bring small boxes to the post office, for multi-day cycling trips, transport gas bottles for welding and brazing to the supplier for a refill. One hand to the bottle and the other hand on the bar. Don't try this at home, but it can be done ;-)

Assembly instructions:

Start with sticking the rubber patch on the main frame, approximately 12 cm from the center of the hingeand put the platform right on top, 7.5 cm from the center of the hinge, add the bolts, secure the nuts evenly, check if the platform is tight and level and you're done! The idea is that the oval chamber/cutout on the underside of the platform should be right on top of the bend section of the main frame and positioned on the rubber patch so the paint of your Brompton doesn't get damaged.

See the pics for the ultimate position. You can play with it for like max 2 cm to either side.

• Made from CNC machined 6mm thick 6000 series aluminium, for now the finish is RAW stone tumbled, looks cool, kinda like hot zinc galvanised. Silver anodised or black anodised will come later as an option.
• platform size: 100x210 mm and 6 mm thick

Included are:

• 1 alu platform with tombstone section and 6" Nano strap
• 2 pc. stainless steel M8 U bolts with PVC protective hose, stainless steel nuts with countersunk heads
• oval piece of rubber made from used Bicycle inner tubes as a protective top layer
• 10 threaded holes (M5 and M6) for attachment of whatever you like to bolt on to it, a trumpet case maybe, a pump clamp on the underside? Two threads on either side are spaced on the standard bottle boss distance in case you want to add something which is designed to be bolted to bottle bosses.
• 24 slots and cutouts for straps (for instance Voilé straps), 2 of them are open on the side to feed a long strap through the opening. The narrow slots are 22 mm x 5 mm wide
• the four bigger holes on the corners are for attaching Rok straps (seperately available in this webshop) or for feeding the straps of some kind of rack bag through.
• CNC engraved EERDERXPLORER logo
• total weight 286 grams
• Optional extra: 14 pc. M5x12mm grip pins for adding grip to your platform just like platform pedals have...don't put your tent on top of these...