Bonanza vented fuel cap repair revisited

markus

Well-Known Member
#1
couple of years ago I had made a vented guage gas cap similar to the original ones Bonanza used on the fiberglass tanks. This style cap is NLA, other styles that come close can be found but not with a vent you can close usually.

The idea to modify the one I had came from the fact that the NOS generic Kelch gauge cap I did have that fit my tank had a loose lens on it and I was able to pry it out. so I thought I could possibly easily modify it with a vented lens. I was able to do it.....just not easily :laugh: total of 3 caps to make it and was a mess of a job, and still not totally like the original!!




So recently I got another Bonanza MX, It did come with the original cap, but as usual the vent was knocked off the lens and the remains of the lens itself were destroyed, The rest of the cap however is in good clean shape but with the lens gone it was useless.

so yesterday a neighbor wheels over his Briggs and Stratton brand Generator thats been sitting for the past few years. Says "hey will you see if you can get this running and sell it for me?" So I am checking this thing over and noticed the cap. its a neat gennie, it has a fuel tank thats built like a remote boat tank and quick connects off the gennie...nice feature. Big honkin gas gauge cap on it with the correct aluminum knurled vent knob for a bonanza......the light bulb goes off in my head.........



Don't tell my neighbor, far as hes concerned the fuel cap was bad and needed replaced :laugh:



as you can see I was like a 3rd world country surgeon harvesting organs from kidnapped tourists ot resell on the black market, but I got the lens out!!! its a bigger lens than the bonanza cap so I just cut around the outer edge of it

Next up I cut and trimmed as best I could the glued in remains of the old lens in the nanza cap, It looks like kelch heat presses these parts together and everything sort of just melts together in the process. the edges of the nanza cap already had some damage/chips I made it a little worse but maybe I can fix that. I also then took my bigger than the hole lens and and shaped the edge down till I got a pretty good fit....



this is where I am at now, yesterday a trip to the hardware for some good adhesive to bond it came up pretty much zilch. I did get some JB weld for plastic but it and anything else specifically for plastic there is tinted in light colors. so if anyone has used something black or clear in an application like this and has a good suggestion let me know. Different color may not really be a big deal, with the chips and dings around the edges I am considering taping off the lens, using the product to fix the damage as well as adhere the lens in, and repaint the cap. Something I would like to avoid but it should not be a big problem with the proper paint products.

hopefully I can save this "unobtainium" part!!!!
 
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#2
I remember that you was messing with these gas caps before.:laugh: I was just recently trying to find my original gas cap from my MX. I put it in a safe place and now I can't find it.:doah: I know you will figure it out and thanks for the lesson.
 

capguncowboy

Well-Known Member
#3

markus

Well-Known Member
#4
I haven't tried this product but I saw it on a recent blog. Looks promising, but it's admittedly in it's infancy stages

https://www.youtube.com/watch?v=8lcSINUxKYA#t=26

Here's a linke to their home page: https://www.touchofmodern.com/sales...326-880b-45ebe26c3242/bondic-diy-super-bundle -- You have to create an account to even view the page, which is admittedly frustrating, but there isn't any verification system in place, so you can put whatever you want to put in there.

Thats some pretty cool stuff! their video music sounds like something you'd hear on some cheezy showtime after hours porn though......not that I really would know, I'm just guessing :anon.sml:
 

markus

Well-Known Member
#6
FAIL! everything was going well, some of the glue I used though wicked up under the tape I had carefully placed on the clear lens to keep it off it :doah: So I came up with plan B...... restore the lens. Fun fact: headlight restoration clearcoat does not adhere to the this style clear lens :doah: Looked beautiful for a couple hours, then it started to peel like a 90's automotive paint job. I will say though that the remains of the clearcoat I do have is from over three years ago when i was still a Technician for Toyota so that could be the problem :shrug: I'm down, but not out yet! Plan C, its coming off pretty easy so now I will try to polish the lens and hope for the best. Good thing there is alot of letters in the alphabet, wonder how many plans I will be into before I toss it in the trash, my patience is thin...probably by plan E :laugh:
 
#8
Mark, we use this to glue magnets to their steel hubs and when its cured the magnet breaks before the glue :thumbsup: McMastercar is cheaper but I couldn't get a link :doah: I think it would work good for relineing brakes too :thumbsup:
Glue | MSCDirect.com
 

markus

Well-Known Member
#9
Well it didn't come out a perfect as I had hoped but its not bad for a 45 year old mini bike gas cap I guess. Its a shame the headlight resto clearcoat would not adhere to the lens, is had come out flawless and very clear...until the peeling started. It picked right off. I was out of any wet/dry from 600-up except for some 1500 so some steps were missed. Could probably get it a touch better, but maybe some other time. So All I can say is keep the glue off the lens no matter what if you attempt to fix one of these, in my case, get somebody with steadier hands to do it I guess :smile:



Oh and the funny thing is My evil plan was to use this on the round fuel tank I planned to use on my trail Blazer, So I dig out the tank this AM, and find that its 1 3/4" thread :censure:
 
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