zippy Posted June 12, 2011 Report Share Posted June 12, 2011 (edited) I think the Ossa looks to be very innovative and cool. But I have a question about the frame. I have done some research and am unable to find the answer. Frame: CR-MO steel tube profile with pipe and bottom made of cast aluminium So how are these cast aluminum pieces attached to the CR-MO steel tubes? I can't see any bolts. Am i blind, daft or just missing something? Also any concern of damage to the lower portion of the fuel tank with having the skid plate mounted to it? Could be quite a bit of stress on the lower part of fuel tank with the skid plate being bashed and bending around a bit. Edited June 12, 2011 by ZIPPY Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted June 12, 2011 Report Share Posted June 12, 2011 I think the Ossa looks to be very innovative and cool. But I have a question about the frame. I have done some research and am unable to find the answer. Frame: CR-MO steel tube profile with pipe and bottom made of cast aluminium So how are these cast aluminum pieces attached to the CR-MO steel tubes? I can't see any bolts. Am i blind, daft or just missing something? Also any concern of damage to the lower portion of the fuel tank with having the skid plate mounted to it? Could be quite a bit of stress on the lower part of fuel tank with the skid plate being bashed and bending around a bit. Glued Quote Link to comment Share on other sites More sharing options...
craig10 Posted June 12, 2011 Report Share Posted June 12, 2011 'Also any concern of damage to the lower portion of the fuel tank with having the skid plate mounted to it? Could be quite a bit of stress on the lower part of fuel tank with the skid plate being bashed and bending around a bit' All the ones going round the Scottish this year seemed ok, plenty of bashplate bashing going on there. Quote Link to comment Share on other sites More sharing options...
borus Posted June 12, 2011 Report Share Posted June 12, 2011 Pending my wrist healing I'll be at Windsor next weekend if you want to take a close look at the frame. Quote Link to comment Share on other sites More sharing options...
neo Posted June 13, 2011 Report Share Posted June 13, 2011 So how are these cast aluminum pieces attached to the CR-MO steel tubes? I can't see any bolts. Excellent question!! Glued That's what I guess too Pending my wrist healing I'll be at Windsor next weekend if you want to take a close look at the frame. Yes please do Borus Best of balance. Neo Quote Link to comment Share on other sites More sharing options...
zippy Posted June 13, 2011 Author Report Share Posted June 13, 2011 (edited) Pending my wrist healing I'll be at Windsor next weekend if you want to take a close look at the frame. That would be cool!! I shall be there as well. Can you tell us how the cast aluminum pieces are attached to the CR-MO tubing? Yes, I understand you have an "interest" in the bike, yada yada yada but I think this falls under the category of general knowledge. Edited June 13, 2011 by ZIPPY Quote Link to comment Share on other sites More sharing options...
zippy Posted June 13, 2011 Author Report Share Posted June 13, 2011 'Also any concern of damage to the lower portion of the fuel tank with having the skid plate mounted to it? Could be quite a bit of stress on the lower part of fuel tank with the skid plate being bashed and bending around a bit' All the ones going round the Scottish this year seemed ok, plenty of bashplate bashing going on there. So the fuel tank is beefy enough to handle the stresses. Good to know. thanks all for the replies. Quote Link to comment Share on other sites More sharing options...
grahamjayzee Posted June 13, 2011 Report Share Posted June 13, 2011 I've had a good close look at Paul Davies' bike in the cambs area. It's a piece of jewellery as far as I'm concerned. It's an approach that I appreciate: define the problem, devise a solution WITHOUT looking too closely at previous strategies. Regarding the frame construction; this isn't entirely new. Go and look at Benelli's more recent road bikes. They use exactly the same approach. Whilst the stresses are different; I think I'd be a lot more concerned about frame integrity on a 170+ mph superbike than on a trials bike! Graham Quote Link to comment Share on other sites More sharing options...
andyevans Posted June 13, 2011 Report Share Posted June 13, 2011 from what ive heard ,you would have plenty of time to have a very good look at that bike!! Quote Link to comment Share on other sites More sharing options...
zippy Posted June 14, 2011 Author Report Share Posted June 14, 2011 Regarding the frame construction; this isn't entirely new. Go and look at Benelli's more recent road bikes. They use exactly the same approach. Whilst the stresses are different; I think I'd be a lot more concerned about frame integrity on a 170+ mph superbike than on a trials bike! Graham OK, it's not a new approach, but what is that approach that actually holds the cast aluminum to the CR-MO tubing? Quote Link to comment Share on other sites More sharing options...
neo Posted June 14, 2011 Report Share Posted June 14, 2011 ....but what is that approach that actually holds the cast aluminum to the CR-MO tubing? Yea super glue or techno horse poo ..... Someone must know the magic Best of balance. Neo Quote Link to comment Share on other sites More sharing options...
tony27 Posted June 14, 2011 Report Share Posted June 14, 2011 It'll be an special epoxy like they use in aircraft, thats where this method of frame construction originated Quote Link to comment Share on other sites More sharing options...
charliechitlins Posted June 15, 2011 Report Share Posted June 15, 2011 Glued That's not glue, son...that's an aerospace grade industrial adhesive! Quote Link to comment Share on other sites More sharing options...
zippy Posted June 16, 2011 Author Report Share Posted June 16, 2011 That's not glue, son...that's an aerospace grade industrial adhesive! AAAAAH so it's the really good stuff to be sniffing!! Thanks for the replies gents. Hopefully I get to see one in the flesh (metal) on Sunday. Quote Link to comment Share on other sites More sharing options...
dan williams Posted June 17, 2011 Report Share Posted June 17, 2011 (edited) "This is glue, strong stuff!" Elwood Blues Edited June 17, 2011 by Dan Williams Quote Link to comment Share on other sites More sharing options...
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