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Lotus Aero Super Pro. Cracks in the paint or worse?

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Lotus Aero Super Pro. Cracks in the paint or worse?

Old 03-23-14, 07:45 AM
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ScottRyder 
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Lotus Aero Super Pro. Cracks in the paint or worse?

I was getting my Lotus cleaned up for the market place when a sharp eyed C&V member asked me about the slight cracking around the seat cluster and head tube cluster .. It's pretty hard to see if your not looking for it but in the photos they're there. Overall the condition of the bike is great, it certainly doesn't look like its been ridden hard. However, I'm concerned, could those cracks point to structural problem with the frame or is it just the paint cracking with normal flex?

And input would be appreciated. Thanks!

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Old 03-23-14, 08:21 AM
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Michael Angelo 
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Looks like it was painted with lacquer paint.
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Old 03-23-14, 09:17 AM
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It's strange as it's pretty much happening at all the joints, which is highly unlikely if these are structural cracks. It is interesting though that the cracks are all in the center of the fillet brazing material. Could it be an issue with the quality of the fillet brazing?? If it's just brittle paint, you'd think that there will be more cracks next to each other and not one crack right at the middle of the fillet brazing.....which might indicate a line of concentrated stress.....which might mean the fillet brazing is cracking at those lines?? I think it's worth checking what's going on under that pain to make sure the frame is still sound. Maybe in an area not easily seen, like the cracking paint right above the lower headset race.....
BTW, How's the BB area doing? any cracks in that area too?
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Old 03-23-14, 10:06 AM
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No cracks in the BB area at all ...

Scott
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Old 03-23-14, 10:33 AM
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That's good news, at least for the BB area, but it kinda deepens the mystery on what's going on at the other joints.... and why the high stressed BB area does not have the same thing going on...
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Old 03-23-14, 09:09 PM
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I've got a Lotus Super Pro Aero (just listed on eBay) and am going to check to see if there's any cracks there, too. If it's a paint or structural flaw, it might be among several from the same factory run. I'll chime in and let you know. Need to take some pics in good light after work this week. Thanks for posting this.

Tom
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Old 03-24-14, 06:09 AM
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I've been researching and collecting information about Lotus for a long time and I've never seen or heard of any Super Pro frame problems. I've seen quite a few abused and beat to hell Super Pros and they all seem to have survived with the frame intact.

Actually, I only know of a very few isolated Lotus frame failures through the model line.

Lotus must have been pretty confident in their frames as they offered a lifetime warranty at the time.
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Old 03-24-14, 06:11 AM
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Originally Posted by Snydermann View Post
Lotus must have been pretty confident in their frames as they offered a lifetime warranty at the time.
That's really good to hear! Thank you.

Scott
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Old 03-24-14, 06:12 AM
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Originally Posted by VintageDude View Post
I've got a Lotus Super Pro Aero (just listed on eBay) and am going to check to see if there's any cracks there, too. If it's a paint or structural flaw, it might be among several from the same factory run. I'll chime in and let you know. Need to take some pics in good light after work this week. Thanks for posting this.

Tom
Thanks for checking yours out!

Scott
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Old 03-24-14, 10:03 AM
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My recollection on these frames is that (like the Cinelli "Laser") a lot of body putty was used to sculpt those smooth curves. The cracks in the paint are likely just an artifact of the putty not flexing with the steel below it.
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Old 03-24-14, 10:10 AM
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With no evidence other than intuition, I was going to suggest it looks like "Bondo". Too much material to just be welding/brazing beads. I think it's the filler cracking, Scott. Though that's just a guess.
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Old 03-24-14, 10:40 AM
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+1 on Rootboy, it looks like bondo.
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