Front Fender Problem on a motorized bicycle

I left both front and rear on my new electro. I did trim the rear one down so the motor had a place to go. I will keep an eye on them to see what happens.

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I don't think you'll encounter a vibration problem with the electrobike.

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Count it all joy...

easy rider i would like 2 no if u have picture of the front motor mouth on the schwiinnits that i got my kit from thatdax and i can weight 4 the the week end 2 drve my bike^)

I'm not sure if I understand the question but the front mount is a 1x1 square tube with a couple of bolts attaching to the motor and on the other side is a couple of bolts attached to a flat bracket. It's the same one I used on my bike. Let me know if we are on the same page and I'll take some pics off of my bike.

In addition to all good suggestions above, here are some others:

If you want to keep the stamped steel fender brackets (I mean the ones from the hub to the fender, not the fork tab), get 2 sets- they are cheap at about any bicycle shop- online lowrider shops have these parts- epoxy or braze one bracket inside the other. Takes some work to get it right, but the resistance to cracking is more than doubled.

Better yet, go buy some 1/2" X 1/8" flat stock and make your own brackets. Bend and fit them until they are the right shape, then drill the holes where you need them. A bracket like that will not soon crack. You can use the same stock to make a tab to attach to the fork. I would prefer that over L brackets. They work fine, but are not as thick...and look like hardware store L brackets.

It would never hurt to use rubber washers where any of the brackets attach.

Finally, and perhaps the most draconian solution for having "fenders", but not dealing with this issue is to build simulated leaf springs- they are thick, strong and do the job of fenders without the worry. Look up some old motorcycle from the pre-war days. My front leaf (ornamental only) does not move at all- AT ALL- when I ride let alone vibrate. I am building the rear leaf this week (hopefully). Two problems with this- first, it only really looks right on a bike built to look like a pre-war model. Second- it is all self-fabricated. You won't find a kit anywhere and if you do not braze or weld, forget it.

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3 cubic inches of raw power.

I agree the L brackets won't break or crack but I've experienced the area on the fender near the L brackets crack. I cracked my fenders so for safety measures, I decided it would be easier if I just took them off especially the way we ride.

I used L brackets as well, But I riveted them on then welded them to the fender. I also used what I call plumbers strap in the inside of the fender the entire length of the fender's and riveted that as well to stiffen them up and a few spot welds to the frame were I could. Yeah, it's a pain to get them off but I've only had to do it twice in 4 years. The peace of mind at least to me is worth it.