[reddave]

I notched out my trailer rim to fit the rear hub from @Stufidmotard today. Instead of making a template to guide the hole saw, I decided to use a small tabletop drill press instead. First, I drew a line from the outside edge of the lug holes and marked the center with a punch.

The next step was to clamp up the trailer wheel on the press to drill a 1/4" hole through each mark. The hole saw bit I have uses a 1/4" bit for centering so, these holes would serve the purpose of keeping the hole saw from walking.

I used a 1 1/4" hole saw compared to the 1 3/8" that I believe is most commonly used. I did this for no other reason than that the only one I had was 1 1/4" and it seemed to eyeball up just fine. Using moderate pressure on the drill press and LOTS of cutting oil, the holes were drilled with very little effort.

Lastly, I knocked all of the sharp corners off the cuts with a Dremel tool and then used a file to finish removing material until the hub fit through nicely. All that's left to do now is finish smoothing all the rough cut edges with a half-moon file before applying some cold-blue solution to the bare metal. And to mount the tire, of course!

 

[TW-Brian]

Nice work Dave!

Great pics and good to know that this job can be done with just a drill press and hand tools.

Brian

 

[oldworld 124]

Did you test fit the Stufidmotard hub?

 

[reddave]

Yes and no! I opened up the trailer wheel enough to pass the hub through, however, it seems that I never acquired the appropriate lug bolts to actually mount the hub, Doh!

 

[TW-Brian]

Hey Dave, let me know what size lug bolts that you need and I will send you a set of four. I am guessing that you'll need the larger ones on the left below (maybe 15mm?)

 

[oldworld 124]

I think the lug bolts are 14mm x 1.5 x 7/8" ( 1" long works, but come close to the brake drum bolt heads )

 

[TW-Brian]

Thanks John, the ones on the left are the ones that I have used on my two trailer wheels builds.

 

[reddave]

Hey Dave, let me know what size lug bolts that you need and I will send you a set of four.

Wow, thank you, Brother! I'll send over a PM.

 

[Fred]

I used 28mm threaded shank lug bolts and the extra length came close to the nuts that retain the brake drum but was not a conflict.

 

[TW-Brian]

Wow, thank you, Brother! I'll send over a PM.

They are on their way to you, Merry Christmas!

 

[reddave]

Merry Christmas to you as well, Brian! Thank you once again!

 

[reddave]

Thanks again, @TW-Brian for sending me over those lug bolts. I am very grateful! Now all that's left to do is to transfer over the 70T sprocket and install this trailer wheel conversion setup onto the bike!

 

[reddave]

Oops! There was supposed to be a picture attached to that last post...