Topic: Fender repair?

[Don R]

 Any new ideas on repairing dents in chrome fenders? Someone suggested rolling a pool ball over the offending area.  I had considered making a wooden buck and die with the radius sanded into it.
 I found an otherwise decent single cut front but it has 3 dents, Not deep but big.

[754]

Try to find a bicycle guy with fender roller , but check his work first..

[ofreen]

Any new ideas on repairing dents in chrome fenders? Someone suggested rolling a pool ball over the offending area.  I had considered making a wooden buck and die with the radius sanded into it.
 I found an otherwise decent single cut front but it has 3 dents, Not deep but big.

I wouldn't do the pool ball thing, the radius will be wrong.  Years ago I worked a dent out of mine with a good fitting dolly and a leather bag.  Came out great and didn't damage the chrome.

[PeWe]

New fender? David silver has much lower price on CB750 NOS fenders than all others.

[Don R]

This one is a single cut, the chrome isn't great so it may not be worth a lot of time. DSS has earned my business in the past and recently.

[Airborne 82nd]

This one is a single cut, the chrome isn't great so it may not be worth a lot of time. DSS has earned my business in the past and recently.

Don what do you mean single cut 

[754]

Early 750 fenders are very rare and hard to find..command big dollars.
Single cut are rare rare rare, and on top of that rare..
Double cut are rare rare rare rare rare rare rare rare rare and besides that really scarce..

And if you dont have the right fender on a KO, everyone makes fun of you......and you cant hang with the Correct Crowd..
 I am thinking a good double cut that maybe needs rechroming... Would sell for say 600 ish..

[Don R]

 Single cut=

 The bead that goes around the fender wasn't perfected for a while during production, the first bikes didn't have the bead on either end, that's a double cut due to the ends appearing to just being cut off. This one has the bead on one end but not the other, hence single cut.

[Terry in Australia]

Yep, you're not gonna pop any dents out with a pool ball, unless it's made out of steel and has a 12 inch handle Don.

I've got a great single cut fender hanging up waiting for my eventual 1969 K0 resto, but I've often thought that I could just grind the bottom lip off a K1 fender on my linisher and no-one could tell the difference?

Just thinking out loud, of course........

[PeWe]

While fixing the single cut a double might do the job and keep water and dirt away when riding in the rain
http://www.motorcycleseatsdirect.com/1969-Honda-cb750-cb750k0-sandcast-front-mudguard-fender/
Not NOS, NRS (new replica stock)

Same shop has nice seats, good to know for future build.

[Terry in Australia]

Looks good Pewe and there is so much repro stuff around you only need an engine and a frame and you can build a complete bike out of repro parts, but I think I'd rather have a slightly rough original bike than one in "show quality" that was made out of repro parts, I think I'd feel like I was cheating.

[PeWe]

Looks good Pewe and there is so much repro stuff around you only need an engine and a frame and you can build a complete bike out of repro parts, but I think I'd rather have a slightly rough original bike than one in "show quality" that was made out of repro parts, I think I'd feel like I was cheating.

Yes, I did that today... got a K2 frame with license plate and registration. I have an engine to be assembled too

Edit: I forgot to mention that all nice repro parts relieve the pressure for the real old ones to the guys that must have the real stuff from the old days, lightly used or NOS.
The NOS parts for other bikes that are  30-40 years old cost almost nothing compared with CB750 SOHC parts.

[RAFster122s]

You mean that old chrome fender I had given to me with a 550 that needs rechromed could be worth over $400?


Just joking, but I do need to take another look at it... 

[Don R]

 I bookmarked that one, Thanks. I think a guy could sand the bead off and then chrome it. Chrome on the ends is the tell tale for me. This old beater has chrome on the ends, that's the best place on the fender. In reality, buying that double cut would be cheaper than re-chroming an old one.

[754]

How is the chrome ? A good fender roller should get it  straight.

[Terry in Australia]

I bookmarked that one, Thanks. I think a guy could sand the bead off and then chrome it. Chrome on the ends is the tell tale for me. This old beater has chrome on the ends, that's the best place on the fender. In reality, buying that double cut would be cheaper than re-chroming an old one.

Ha ha, nothing wrong with a little sliver of silver paint Don...........

[PeWe]

I bookmarked that one, Thanks. I think a guy could sand the bead off and then chrome it. Chrome on the ends is the tell tale for me. This old beater has chrome on the ends, that's the best place on the fender. In reality, buying that double cut would be cheaper than re-chroming an old one.

Ha ha, nothing wrong with a little sliver of silver paint Don...........

Or a nice sticker from the days to cover the bad area? Oil company, speed part manufacturer/seller, eye candy....
Seriously, when I know the special circumstances, a car body repair guy might do the thing if getting the fender? Extra job beside at lunch or after work?
Hammer with correct shaped tool from inside, other side a wooden part with same shape as the fender.. bang, bang and fixed :-)

[RAFster122s]

Woodworkers have a slick tool called a contour gauge which can take a curve surface off of a part and allow you to transfer the dimension to paper or if you have a symmetrical part you can compare sides.  It has a bunch of plastic or metal posts or fingers side by side held in the center with a bar providing slight tension preventing the fingers to slide through the holder in one direction or the opposite direction. Pushing one side against a surface holding the center bar as you press it against the object whose contour you wish to capture.  The surface side has a mirror to the curved piece whereas the opposit side projects a position or identical  to the surface being measured. It is not easy to describe its operation...the words do not come to me to desribe this very well. Artists have a square plastic stick  that copies the surface to whatever  curves are in something you press it into taking. Being rigid enouth to hold this shape and transfer it to paper or offset the line by whatever thickness is needed after first forming it to that line or surface and that curve or shape can be used like a ruler.  Or the pattern curved could be moved to another location or transferred to another location.

[754]

Contour guage..never had one..dont need it..
 I cut a guage to fit out of cereal box cardboard, get it to fit as close as you can,if you need reverse..draw it with a pen  off the first one you made..
 If you need greater accuracy, use 60-90 thou aluminum sheet, and fiddle file it to fit the sample.

[Terry in Australia]

Just bash the sh1t out of it with a Hammer Don!

[PeWe]

Just bash the sh1t out of it with a Hammer Don!

Mc Hammer?
"Can't Touch This"

[Terry in Australia]

STOP!


Hammer time.

[754]

Apparently everyone refuses to consider the tool expressly made for this...good luck..
Just found this, it may work, place the fender on heavy rubber like mudflap, and roll a round piece from a weight set over the inside.. 
I would tape over the weight edge and build a handle on each side..like broomstick thru middle with handgrips.

[ofreen]

Apparently everyone refuses to consider the tool expressly made for this...good luck..
Just found this, it may work, place the fender on heavy rubber like mudflap panel beaters leather bag, and roll a round piece from a weight set work a correctly shaped dolly over the inside.. 
I would tape over the weight edge and build a handle on each side..like broomstick thru middle with handgrips.

FIFY.  See reply #2.

[754]

I have a shot bag, but I bet there is not 12 of us on here that do.
And I can make a form fitting dolly on a sander and understand getting a precision fit, I have hand ground geartooth cutters and radius form tools for machining..

But on here,  I try to present a method that is within reach, and has a good chance of working.
I suspect hammering wont work first try for most..
And most wont put a shot bag together for one job..

But I got to asked...has anyone on here seen a fender repaired by rolling ?
Bicycle fenders are half the thickness of ours, and I see ones saved that can be rechromed..our fenders are easier.