Seat tube mud deflectors
 

I'll admit I'm sharp as a bowing ball but I no kidding saw a couple of mountain bikes online with a mud deflector on the seat tube and my Duck Duck Go Foo just isn't up to finding it. "seat tube mud deflector, MTB mud deflector, and. bike mud deflector has lead me to a bunch of nothing.

https://cimg0.ibsrv.net/gimg/bikefor...da54ee0c87.jpg
I'd like to know the proper search to a deflector because chains and my feet

"Fenders", perhaps? Topeak makes some nice ones with a mounting bracket that attaches to the seattube and the fender itself clips onto it.

Peruse various fender manufacturers' sites. Don't know what you saw, but SKS makes a bunch of snap-on mudguards.

https://sks-us.com/collections/fende...se+rear-fender

I limited the search results but you can expand to see all.

A similar product (X-Blade) which I mended after a MTB crash. Use it on both bikes. https://www.competitivecyclist.com/s...0%26%20Touring

https://cimg5.ibsrv.net/gimg/bikefor...7999728d4.jpeg

Not the best idea there, IMO. Find an old rubber boot and cut it where the mould fits best. Mine certainly work fine. I can ride this in spring puddles all day. That rear fender needs to be full length. Smaller tire if needed.
See how I also have one behind the BB. I use 4 mm bolts and big washers against the rubber. Bolt head inside will be easier to clean. They last for years.
https://cimg6.ibsrv.net/gimg/bikefor...db284ac5e8.jpg

Try googling "mtb mudguard"

That's a really nice Bianchi you have there Bob! I used to have that exact same mudguard on my hardtail, but could never get my head around fitting it to my road bikes, lol. I just use an Ass-saver flap, which of course wouldn't work with your saddle bag.

I have something like below. it's good for keeping my water bottle cleaner

do you mean these things?

Mucky Nutz Gut Fender

SKS Mud-X Front Bicycle Fender

Seat tube mounted, like this?


https://cimg9.ibsrv.net/gimg/bikefor...479f89cbd.jpeg
‘19 T-Lab X3

Those are from Ass Savers https://ass-savers.com/

Just get fenders. I have a set of SKS fenders. They attach with straps so no bungs are needed. They only take a few seconds to put on and remove.

https://www.glenn-ring.com/emonda/fenders.jpg

Are you looking for a Deflector to go below and in front of the current rear fender. Something to extend down to the bottom bracket? I’d just cut up a plastic bottle and punch holes in it to zip tie it to the seat tube.

Another easy-on/easy-off fender set is the Crud RoadRacer Mk3. Sleek, super light, and full coverage (the front is long enough to protect toes), including front derailleur protection:

https://cimg4.ibsrv.net/gimg/bikefor...f21e7a48c.jpeg
aluminum Kinesis Racelight 4S

https://www.crudproducts.com/roadracer-mk3/

I think the OP should concentrate on finding some additional chainrings. :D

Oh, is that the OP’s bike pictured in the OP? I was confused, and thought that was an example, but now I see they’re looking for a piece to extend their existing rear fender down to the bottom bracket. I guess they’re looking for front fender extended coverage to protect toes, too? It’s a confusingly phrased OP, anyway, which explains the diverse replies.

And a bigger frame. :D

It is rainy day only since it clips on and off in 10 secs. Thanks for the compliment,

Most of the ones I remember being called "deflectors" are zip-tied to the downtube.

To keep your feet and crankset cleaner from front tire spray, I usually think of mudflaps. There are commercial ones, but a lot of folks cut them out of used plastic milk jug/Coke bottle/bike bottle materials and add them on to the end of their existing fenders.

As for your rear fender though, just get a full length one that goes right up to the bottom bracket.

Yeah I like the quick release strap on those. Very convenient. To be honest I never even thought of fitting it on a road bike.

You can put a mudflap on the front, but it won't do a lot of good since your rear fender is so short in the front. Try something like the Planet Bike Cascadia. https://www.amazon.com/Planet-Bike-C...s%2C467&sr=8-7

Yes..to compensate for the short rear fender

i think I’ll just get a down tube version and zip tie it to the seat tube

Yeah, I’ve never heard of such a piece to extend a short rear fender, so you could give a downtube mounted one a try, but I’d bet they’re going to be too wide and too long.

You could try to jimmy-rig something, but it might prove to be worthwhile juust getting a new fender set which provides more adequate coverage.

i have three sets of fenders in my garage that don’t fit the bike if I were to put any more fenders on there I’d just go aluminum but I like these