Author Topic: What to do with these dents. I've got 48 hours!  (Read 3597 times)

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Offline Vincent P

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Re: What to do with these dents. I've got 48 hours!
« Reply #25 on: October 03, 2013, 05:20:40 AM »
I like my original bondo and flat black; and the suggestion to look for a replacement tank in the mean while.

I'm thinking though; if the bondo and sanding is done well; you may just like it enough to leave it on the bike.  ;)
1973 Honda CB750 K3

Offline Powderman

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Re: What to do with these dents. I've got 48 hours!
« Reply #26 on: October 03, 2013, 08:17:44 AM »
I like my original bondo and flat black; and the suggestion to look for a replacement tank in the mean while.

I'm thinking though; if the bondo and sanding is done well; you may just like it enough to leave it on the bike.  ;)
Bondo that thick will start to shrink and be quite noticeable after a short while. you won't want to leave it.

In a real pinch you could weld a piece of sheet metal over the dent and dress it out since it's only going to be temporary.
« Last Edit: October 03, 2013, 08:19:19 AM by Powderman »

Offline 754

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Re: What to do with these dents. I've got 48 hours!
« Reply #27 on: October 03, 2013, 08:42:31 AM »
It might not even show up in the movie...
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline RAFster122s

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Re: What to do with these dents. I've got 48 hours!
« Reply #28 on: October 03, 2013, 08:56:57 AM »
Bondo for now, sand  it well prime/fill, fill shallow spots, sand, prime/ fill, sand, prime, sand, sand finer, paint with spray bomb done. Maybe from start + 15- 20 hrs later done... hope you started already.

The metal has to be properly pulled with the stud gun, too many people try to work it out fast with too few studs. Big dent is probably easier than multiple small dents.

How did you get your 550 in the movie?

Good luck,
David
David- back in the desert SW!

Offline Vincent P

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Re: What to do with these dents. I've got 48 hours!
« Reply #29 on: October 03, 2013, 09:07:22 AM »
I like my original bondo and flat black; and the suggestion to look for a replacement tank in the mean while.

I'm thinking though; if the bondo and sanding is done well; you may just like it enough to leave it on the bike.  ;)
Bondo that thick will start to shrink and be quite noticeable after a short while. you won't want to leave it.

In a real pinch you could weld a piece of sheet metal over the dent and dress it out since it's only going to be temporary.

Agree with welding some sheet metal to it.
1973 Honda CB750 K3

Offline Elan

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Re: What to do with these dents. I've got 48 hours!
« Reply #30 on: October 11, 2013, 08:00:39 AM »
verdict?? :)
Oil Pump Kits are Available on eBay!See my eBay store!
http://stores.ebay.com/Vital-Motor-Parts?_trksid=p2047675.l2563

k6 build   http://forums.sohc4.net/index.php?topic=79833.0

76 750k

Offline DustyRags

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Re: What to do with these dents. I've got 48 hours!
« Reply #31 on: October 11, 2013, 11:45:41 AM »
Come on, man, don't leave us hanging!
1976 CB550K- sold
2005 Kawasaki Vulcan 500- sold
2000 CB750 Nighthawk - sold
1975 XL350 - crashed
2004 Suzuki Vstrom 650 - sold

Offline Stev-o

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Re: What to do with these dents. I've got 48 hours!
« Reply #32 on: October 11, 2013, 05:25:46 PM »
Whatga end up doin?!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline dave500

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Re: What to do with these dents. I've got 48 hours!
« Reply #33 on: October 11, 2013, 05:57:48 PM »
get em to change the story line,you have a minor crash and dent the tank?dont even have to fix it then,for the before you have paper or saran pulled tight over the dent painted and no close up shots.

Offline Powderman

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Re: What to do with these dents. I've got 48 hours!
« Reply #34 on: October 11, 2013, 08:37:18 PM »
I love people making suggestions 7 days after the shoot. ;D

Offline dave500

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Re: What to do with these dents. I've got 48 hours!
« Reply #35 on: October 11, 2013, 08:43:21 PM »
scrap that footage/re shoot/quiet on the set!

Offline Stev-o

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Re: What to do with these dents. I've got 48 hours!
« Reply #36 on: October 11, 2013, 09:18:16 PM »
Lights, camera, cancel
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline dave500

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Re: What to do with these dents. I've got 48 hours!
« Reply #37 on: October 11, 2013, 09:19:37 PM »
anomaly 2?

Offline jorwesflow

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Re: What to do with these dents. I've got 48 hours!
« Reply #38 on: October 11, 2013, 09:30:29 PM »
Hey sorry guys, I got super busy and checked out for a few days... So here's the update:
Went with the fiber fill and then bondo'd on top.
This was my first time ever using either, so it was a serious learning process... e.g. the right amount of hardener to add/the right color to get it to, the amount of time you have to cake that stuff on—fiber or reg bondo—before it's not workable anymore, etc, etc

Oh and I decided to fill in the badge areas too and just attempt to make the whole thing smooth.

I used a coarse sanding on the bare tank so the fiber had something "grab" on to, more or less. So after the fiber fill was done curing, the bondo process began. This was a lot of trial and error. First time I added too much hardener and had like a minute to get a layer on. I ended up sanding most of back because I did such a bad job. Second time I didn't add enough and it didn't harden even after a few hours. So I wiped the gummy goodness off and tried a third time. This time I realized the dang spreader that came with the bondo is the exact color you want the stuff—that's why they made it that way.

So I probably bondo'd and sanded a good four or five times after that. So. Much. Sanding. I couldn't lift at the gym for a week because my shoulder was tweaked out from all the frickin sanding.

Then I wiped it down, and got it ready for primer. I got this rattle can primer/filler stuff at Auto Zone. Krylon I think. Started with the underside just to add another layer of something under there in case the paint stripper I had used previously took anything off. On the main part of the tank I think I did four coats of the filler/primer, fine sanding and wiping down again after each time.
I started running out of time because the film crew was coming to pick me up in a few hours. I actually began to fall in love with the flat burnt orange color of the primer so I just said screw it, I'm going to leave it with primer for the film.

So then things got interesting. Got a call from one the guys to touch base, and I decided to just double check that they had indeed rented a van with a hitch receiver. The plan was to hook up my trailer to their 15passy E350. He checked, sent me pictures, and I confirmed that there was indeed no hitch receiver. We quickly discussed options: having a cap/hitch place install one while we waited or I find a pickup truck and drive up on my own. The install option wouldn't work out because it would have messed up their schedule. I couldn't find a pickup truck. So he talked to the director and they decided to just can the scene. I guess sometimes when you've got a movie with an $80k budget, things get trimmed.

So I'm left with a tank that could have been done right had there been no rush. Oh well... But as you can see in the pictures, my bike is of the "raw" persuasion. I honestly don't mind the imperfections of the bondo that can be seen when you get up close. Just looks like a roughed up tank. It's better than a 9" wide 1" deep smiling dent I suppose.

And if you're wondering, yes, there's still just primer on the tank. I know this is a no-no. But I really like this friggin color and can't seem to find it in flat. Could I just throw some clear coat on? Is there a good no-gloss clear in a rattle can I should look for?

So yeah, the end, sorta. Good story right? You could make a movie out of it.

Before Sanding


Before Sanding, other angle


Third Coat of primer



It'll do

1977 CB550K

Offline Stev-o

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Re: What to do with these dents. I've got 48 hours!
« Reply #39 on: October 12, 2013, 05:14:24 AM »
Yeah, good story, wouldn't never guessed the ending. 

Not enough substance for a movie, maybe a vid on YouTube?!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline DustyRags

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Re: What to do with these dents. I've got 48 hours!
« Reply #40 on: October 12, 2013, 07:54:46 AM »
That IS a pretty color!

Good story, too bad the scene got canned. You couldn't just ride the bike up there?
1976 CB550K- sold
2005 Kawasaki Vulcan 500- sold
2000 CB750 Nighthawk - sold
1975 XL350 - crashed
2004 Suzuki Vstrom 650 - sold

Offline jorwesflow

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Re: What to do with these dents. I've got 48 hours!
« Reply #41 on: October 12, 2013, 08:32:19 AM »

That IS a pretty color!

Good story, too bad the scene got canned. You couldn't just ride the bike up there?

Acadia nat'l park is about 6 hours from me. And my seat and riding position aren't exactly comfortable. Would be a gorgeous ride though
1977 CB550K

Offline 754

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Re: What to do with these dents. I've got 48 hours!
« Reply #42 on: October 12, 2013, 08:42:59 AM »
So you learned a few things,
 Rather than just figure out bondo mixing by luck and seat of the pants..just read the label.
 Get a plan B for transportation, should not be hard to find someone to go to a movie set if you ask them a few days ahead of time..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline jorwesflow

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Re: What to do with these dents. I've got 48 hours!
« Reply #43 on: October 13, 2013, 06:59:25 AM »

Rather than just figure out bondo mixing by luck and seat of the pants..just read the label.

I did read the label. Turns out "golf ball size amount of filler" isn't so easy to gauge when the stuff doesn't sit in a golfball spherical shape. Also, when they say 1.5inch strip of hardener, that's not easy either--the thickness/volume of the strip is affected by how hard you squeeze the tube. It's all very subjective to, well, trial and error. Which is exactly what I went through.

Get a plan B for transportation, should not be hard to find someone to go to a movie set if you ask them a few days ahead of time..

I hear you. But again, they were shooting several scenes in Acadia National Park, 400 miles away from where I live. It was a multi-day excursion. I don't know about you, but I don't feel comfortable asking someone to borrow their truck for 3 days and 800 miles round trip.
1977 CB550K

Offline 754

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Re: What to do with these dents. I've got 48 hours!
« Reply #44 on: October 13, 2013, 09:15:54 AM »
Hey because its hard to get mix right, better to test a batch first..such a mess if. It never sets up right.
 I did not realize it was a 3 day shoot.. Usually someone is interested to watch the goings on .
Yeah it can be tough to borrow a truck sometimes...
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline ekpent

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Re: What to do with these dents. I've got 48 hours!
« Reply #45 on: October 13, 2013, 04:41:31 PM »
Were you supposed to be driving the bike in the movie or some other stunt double ?

Offline jorwesflow

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Re: What to do with these dents. I've got 48 hours!
« Reply #46 on: October 16, 2013, 11:38:35 PM »

Were you supposed to be driving the bike in the movie or some other stunt double ?

Ha, "stunt double"... reminds me, there was an internet rumor going around today that Jackie Chan died performing a risky stunt for a movie. Totally false it turns out. I digress.

The bike was to be ridden by the lead character in the movie.
I was just the guy supplying the prop, more or less.
1977 CB550K