Mud flaps?

[pethier]

Has anyone put mud flaps on the front cycle fenders?

 

My CSR 260 is my first cycle-fender car.  The two Caterhams and one Birkin thus far have all had the long, sweeping, "clamshell", fenders attached to the body.

 

In autocrossing, we use sticky tires and turn the steering wheel sharper than road racers do.  This is a nice car and I want to beat it up as little as I can.

[KnifeySpoony]

put PPF on the side panels - problem solved

[7Westfield]

Yes

 

but I still have to vacuum it after every autocross--lots of crap in the cockpit, and still rock pits on the rear fenders

[11Budlite]

I've seen it done but not sure how they were mounted, probably just a couple of button-head screws with washers/nuts. If it's extended low enough I'm sure it would make a big difference. I agree with KnifeySpoony though, put PPF on the side panels. I also put it on the forward section of the rear fenders before I installed the rock guards. I had that done on my 310 and I can't imagine the damage to the paint in those areas without it.

[7Westfield]

mine are mounted on the rear fender bracket

they extend 4" from the bottom of the wing, and end up 4" off the ground

Edited June 11 by 7Westfield

[wdb]

Pics! Pics!!

[pethier]

3 hours ago, 11Budlite said:

I've seen it done but not sure how they were mounted, probably just a couple of button-head screws with washers/nuts. If it's extended low enough I'm sure it would make a big difference. I agree with KnifeySpoony though, put PPF on the side panels. I also put it on the forward section of the rear fenders before I installed the rock guards. I had that done on my 310 and I can't imagine the damage to the paint in those areas without it.

The rear of the CSR fender is cantilevered out a ways.  
Fender is designed to hug the tire closely.
I figure I have to take off the tire, drill the fender, insert pop rivet from the inside   Add mud flap.  Pop rivet washer,.  Tighten it up.  Long part of rivet is on the outside where it can't mess with the tire.

[wemtd]

I epoxied BigHead fastener to front fender & bolted on Lexan flaps. They’re flexible enough & have worked great for over 10 years.

Edited June 12 by wemtd

[pethier]

I picked up some pop rivets with oversized heads

[wdb]

Piiiiccccccssssss!!!!

[pethier]

On 6/11/2026 at 10:51 PM, pethier said:

I picked up some pop rivets with oversized heads

I found these pop rivets at Menards.  The flanges measure 0.626", or 5/8", or 15.9mm.

[7Westfield]

if you'd rather have aluminum, I can mail you a handful

 

https://www.speedwaymotors.com/Large-Head-3-16-Inch-Exploding-Rivets,42816.html?sku=910049-PLN

 

remember---add lightness

Edited 21 minutes ago by 7Westfield