Adapter to use Yuba Monkey Bars on Radwagon 4

[Dewey]

Recently learned the RadWagon Caboose bars are out of stock. There is an adapter called the SuperKnuckle that can be used to mount Yuba Monkey Bars to a RadWagon 4

 

[joel52402]

This is cool. I'm past that stage in my life, but the tournament from children never ends...just FYI! It is good to see 3rd party folks starting to come out with RP accessories. It will happen more & more. Batteries are a biggie. Rad is so tight on their specs.
I tried to order a standard set of "Heliox" axel, seat post, seat locks, etc for my RW4. I talked to the "in the know" fellow at Heliox. He couldn't get the specs from RP either. Dorks! So I'm going to take my calipers out & measure all the parts & pieces.

RP should really have a full spec sheet, with all the bolts, axels, etc listed. It's like on the parts page "We don't have every part listed, please call us". I just want the damn part. I'll pay now if I can back order it, not just get put on a waiting list. It is a royal PIA, but it will help us all. Good luck to all. JLH in Eastern Iowa.

 

[TimmyTwo]

I installed this adapter last weekend. Working great after a few rides. It's a simple adapter made of machined hard plastic. The bolts to the frame are through bolts with locknuts. The bolts for the monkey bars thread into metal dowel nuts. The build quality is good not great, with a bit of interference with the (bulky) welds on the RW4 frame. But that did not impact my ability to fully seat the adapter against the frame, and there is plenty of room in the through holes for adjustment as needed. Overall, I'm pleased with the outcome.

Notably, I also picked up Superknuckle's pannier adapter so I could use my Ortlieb panniers. I'm very happy with it. Super simple and effective.

 

[dk-bikes]

Hi @Dewey @TimmyTwo - do either of you know if this adapter would work for the Radwagon 2018? I emailed them and still waiting for a response. If anyone here know of other solutions for a Caboose on the Radwagon 2018, I'd be grateful. Willing to pay. Thanks.

 

[Dewey]

Hi @Dewey @TimmyTwo - do either of you know if this adapter would work for the Radwagon 2018? I emailed them and still waiting for a response. If anyone here know of other solutions for a Caboose on the Radwagon 2018, I'd be grateful. Willing to pay. Thanks.

Sorry I don't know but the bolt spacing for the SuperKnuckle appears to be specific to the RadWagon 4 which has a different design rack than previous RadWagon's

 

[TimmyTwo]

Hi @Dewey @TimmyTwo - do either of you know if this adapter would work for the Radwagon 2018? I emailed them and still waiting for a response. If anyone here know of other solutions for a Caboose on the Radwagon 2018, I'd be grateful. Willing to pay. Thanks.

Yeah, I agree with @Dewey that this wouldn't work. The mounting points are too different - 2018 uses bolts from the top but current version uses horizontal bolts.

As a follow up to my previous post, if I could go back, I'd choose the proprietary caboose over the monkey bars. The monkey bars rattle like mad when there's no little hands holding them, and no amount of tightening, cushioning, or securing seems to solve it long-term.