NeilCSR Posted October 5, 2015 Share Posted October 5, 2015 When going at a 'healthly motorway speed', one-up, the passenger door blows in at the back, enough to undo the press stud on the restraining strip and is only held in place by the arm rest clip.Never noticed this on previous sevens I've owned, nor on this one before (owned now for about eighteen months) and never an issue when two-up as the passenger's shoulder stops this happening. Maybe wasn't cruising as quickly one-up for an extended period before so never noticed it.Have recently changed the diff from 3.92 to 3.38 (5-speed) which means that if I ever took it to 4k in 5th I would be doing 94.0, so motorway cruising miles are much easier (the change has made a massive positive difference to the car and all five gears get used - but that's another topic).Not sure if it's a result of more recent solo trips, easier higher cruising speed, or a problem with the door. Even removed the mirror which I though might be acting as a 'sail' and forcing the door in but that made no diifference. It's a concern as I don't want to lose the door, and don't also want to add an extra catch on the outside.Any thoughts? And is this pretty common? And if so, is there a mod suggested for the door to stop this happening?Neil Link to comment Share on other sites More sharing options...
SM25T Posted October 5, 2015 Share Posted October 5, 2015 Never experienced that ! Maybe replace the rear popper base and popper. Do the front hinge pins have threads protruding under the hinge .... you could put a nut on one. Link to comment Share on other sites More sharing options...
sjmmarsh Posted October 5, 2015 Share Posted October 5, 2015 Neilmine started doing that after I had the rear wing replaced (another story). It looks like the new wing is slightly closer to the door so that rides up under the pressure at speed, resulting in it popping in.There is some slack in the inside fastener, so my first line of attack is to shorten the strap.Steve Link to comment Share on other sites More sharing options...
Ian B Posted October 5, 2015 Share Posted October 5, 2015 Yes it happens on mine, although not on Motorways as I avoid them (SM235T probably doesn't go fast enough ).I've added a strap with a popper that fits onto the stud just beyond the door that I think is meant for half doors. Even that pulls undone sometimes, so I'm looking at an alternative fixing, possibly a one-way popper.It's not likely to happen on an S3 as the doors are shorter. Link to comment Share on other sites More sharing options...
Bob_C Posted October 6, 2015 Share Posted October 6, 2015 I had the same issue which was (mostly) cured by loosening the four bolts holding the screen on and making sure the screen is tipped back as far as it will go before tightening them up again. It now only happens I'd there is a strong gust or lump of air.Bob Link to comment Share on other sites More sharing options...
sjmmarsh Posted October 6, 2015 Share Posted October 6, 2015 BobThanks - a good idea. I swap my screen to aero sometime so I'll see how much play there is. Steve Link to comment Share on other sites More sharing options...
NeilCSR Posted October 6, 2015 Author Share Posted October 6, 2015 Thanks for all the advice. Wasn't sure whether it was unique to my car or not, didn't happen on the two previous sevens which were S3s, but I can see that I'm not alone.Moving the windscreen as far back as possible makes a lot of sense as that will add to the overlap of the door's interior frame against the body where the door and body meet when closed, hence making it more difficult to 'pop'. Hadn't thought to check whether there was any possible movement in the frame position, but I did undo the frame a while back and might have inadvertantly created this problem when putting back.If that doesn't work I'll probably add a 'turnbuckle' catch at the rear edge of the door and use that when solo. Didn't want to make any addition like that but it should solve the problem, albeit in an unsatisfactory way.Could always just go slower.........!!Perhaps that's just a bit too much.Neil Link to comment Share on other sites More sharing options...
Hanns Per Posted October 7, 2015 Share Posted October 7, 2015 Had the same issue because the frame of the door broke I had to add some fiberglas sail bar. Howeer then the surface to the body of the car was not plain any more and when its raining water tends to leak into the car. Link to comment Share on other sites More sharing options...
Hanns Per Posted October 7, 2015 Share Posted October 7, 2015 Had the same issue because the frame of the door broke I had to add some fiberglas sail bar. Howeer then the surface to the body of the car was not plain any more and when its raining water tends to leak into the car. Link to comment Share on other sites More sharing options...
john milner Posted October 7, 2015 Share Posted October 7, 2015 Never happened to me and I don't even use the strap. It must be down to build or model differences. Mine is a SV with 16" wheels so working on the theory that porky is okay maybe this problem only affects skinny variants. Link to comment Share on other sites More sharing options...
SM25T Posted October 7, 2015 Share Posted October 7, 2015 OP has a CSR which is a fat boy chassis too. Link to comment Share on other sites More sharing options...
sjmmarsh Posted October 7, 2015 Share Posted October 7, 2015 OP, Hans Per and I all have the CSR, so may be chassis related. That said, it was never a problem before I had the passenger rear wing replaced. Steve Link to comment Share on other sites More sharing options...
revilla Posted October 7, 2015 Share Posted October 7, 2015 My SV does it all the time. Has done ever since I got it. Just sorted of assumed TADTS! Link to comment Share on other sites More sharing options...
glasgow Posted October 7, 2015 Share Posted October 7, 2015 Never had this issue but my door hinges are rusty which make it difficult to take them off and on. Will never use any lubricant there Ahmed Link to comment Share on other sites More sharing options...
Gnockoff Posted October 8, 2015 Share Posted October 8, 2015 I'm with Revilla on this one, same answer. Link to comment Share on other sites More sharing options...
NeilCSR Posted October 11, 2015 Author Share Posted October 11, 2015 Update.....Good advice, Bob. Screen adjustment has helped - it still occurs but at approx 10mph higher.Loosened the screen, and set it as far back as possible, noting that there was about 1mm gap between scuttle rubber and previous dust line.Definitely made a diffference, see if it is enough after a while. Neil Link to comment Share on other sites More sharing options...
SM25T Posted October 11, 2015 Share Posted October 11, 2015 I think it is all about door overlap at front of rear wing. Tried mine at very high levels today .... no problem at all. Do you have the armrest fitted to your doors ? Link to comment Share on other sites More sharing options...
guitarguy Posted October 12, 2015 Share Posted October 12, 2015 I've had the same problem as the lower door 'flap' has 'broken' (ie no longer a solid integral piece beneath the plastic outer skin) - this leads to my leading edge of said flap 'flapping out' at speed which in turn causes the rear edge of the door to 'blow in' (this is made worse when speed is combined with gusty side wind...). I have had the door lift of the hinges as a result which is.... interesting! Two strips of gaffa are my (long term!) temporary quick fix - one along the hinge line, one along the front lead edge of the lower flap... (you may of guessed I'm no polisher, so this doesn't bother me at all aesthetically and does the job). Link to comment Share on other sites More sharing options...
SM25T Posted October 12, 2015 Share Posted October 12, 2015 Can you put nuts on the bottom of at least one hinge pin ? Some protrude below the hinge body. Link to comment Share on other sites More sharing options...
NeilCSR Posted October 12, 2015 Author Share Posted October 12, 2015 It's all about the overlap of the door at the front of the rear wing, and particularly how much the internal frame overlaps. If it's only a bit, the frame bends and the back of the door goes in. The greater the overlap, the greater the aerodynamic force required to bend the frame, which increases with speed.Moving the windscreen frame back has definitely helped. The door is only still there because of the armrest catch! It was only this that stopped the door flying off. Think I will probably add a small turnbuckle catch to the front of the rear wing so that the rear flap of the door can be secured - but only twist to close when going solo. Passenger's shoulder and elbow on the armrest do a pretty good job otherwise. Adding this catch should cure the problem and hopefully not look too out of place Link to comment Share on other sites More sharing options...
revilla Posted June 13, 2016 Share Posted June 13, 2016 Did anyone ever come up with a good solution to this?Mine are still doing it, and it's annoying me.I've had a bit more of a look at the problem. Even with the windscreen positioned as far back as possible, the line of the rear edges of the doors gives the impression that the doors are basically at least 1cm too short, as shown below. The only part that overlaps the the chassis hoop at the rear is made entirely of flexible leather. There are no rigid frame components in any of the overlapping part of the door.Are other peoples' SV doors like this? Mine is 2003 registered, but I think built from 2001 parts. Link to comment Share on other sites More sharing options...
Blacken Posted June 13, 2016 Share Posted June 13, 2016 We have experienced the sidescreens bowing in a bit on windy motorway trips. Just push our elbows out - the height of technology! Link to comment Share on other sites More sharing options...
revilla Posted June 13, 2016 Share Posted June 13, 2016 Yes this isn't just a case of them bowing a little though, when I don't have a passenger the passenger door actually flips inboard of the wheel arch and flaps about over the passenger seat. I have armrests which stop the lower part of the door flipping right in but the upper part of the door comes right inside the car. Eventually it is going to damage the door. Link to comment Share on other sites More sharing options...
NeilCSR Posted June 13, 2016 Author Share Posted June 13, 2016 Turnbuckle now fitted to the furthest rear point of the door. Fine so far into three figures so problem appears solved.....Just have to remember to secure this when going solo!Neil Link to comment Share on other sites More sharing options...
revilla Posted June 13, 2016 Share Posted June 13, 2016 @NeilCSR: Any chance of a photograph or two of what you did please?Mine kinds of ends up like this: Link to comment Share on other sites More sharing options...
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