CtrMint Posted September 19, 2020 Share Posted September 19, 2020 Hello All,I'm just working on the final bow protector for the 620R. After removing the floor I discovered the floor was different to the 420R and also the 620R passenger. The two outer fixings, I guess rail, have integrated bosses as shown in the image. They appear to be branded as Tillet.My 420R has the same carbon padded seats and both driver's seats are on runners, the 620R passenger side is fixed. The 420R doesn't have the boss.Anyone know the reason for this? I can't immediately see a height difference in the seat, but the seat appears true when in. I'd like to understand more if anyone has any insightsThanks Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 19, 2020 Share Posted September 19, 2020 Not seen those before, since they are Tillet branded possible a requirement from Tillet to spread to load on the mounting, but curious as why only on the outer mounts......or the more cynical reply... to level the seats due to wonky floors.... Whilst there out though its a good time to add crutch straps to your harness.... very worthwhile upgrade Link to comment Share on other sites More sharing options...
garybee Posted September 19, 2020 Share Posted September 19, 2020 Are you sure they're not just the normal Tillet spacers that have become stuck to the floor? Link to comment Share on other sites More sharing options...
aerobod - near CYYC Posted September 19, 2020 Share Posted September 19, 2020 I would say garybee is right on that, as you can see that the thickness of the outer edge of the spacer / washer is the same as the thickness in the hole, so they must just be sitting on top of the floorpan. Link to comment Share on other sites More sharing options...
ChrisC Posted September 19, 2020 Share Posted September 19, 2020 They are just normal Tillet spacers. I wonder if they have been stuck them to the floor to make the install easier. If you put the spacers under the runners then it would be very tricky to stop them moving as the seat is installed. Interestingly the factory told me recently that they prefer to fit the spacers between the runner and the seat, so the load on the floor is more uniformly spread. Obviously not all the builders are following that approach. Link to comment Share on other sites More sharing options...
CtrMint Posted September 19, 2020 Author Share Posted September 19, 2020 Curious.I don't have similar spacers on the 420 with the same seats, should ?Why only have the spacers on the one side too? Link to comment Share on other sites More sharing options...
ScottR400D Posted September 19, 2020 Share Posted September 19, 2020 That makes sense, Chris and is how my composites are mounted. To have the whole of the runner against the floor panel, as opposed to just the two washers seems a no brainer. Link to comment Share on other sites More sharing options...
ScottR400D Posted September 19, 2020 Share Posted September 19, 2020 I wonder if someone mounted them like that to get a better alignment of the seat adjustment bar through the cross member? Then again, raising the runner might make that worse. Link to comment Share on other sites More sharing options...
ChrisC Posted September 19, 2020 Share Posted September 19, 2020 The spacers are used to position the seat away from the bow and the tunnel. In your car case they have been added to tip the seat towards the tunnel, because it probably touches the bow without them. They are also used to tip the seat back a bit. Often added to stop your head from being pushed forward when wearing a helmet doesn't. Link to comment Share on other sites More sharing options...
CtrMint Posted September 19, 2020 Author Share Posted September 19, 2020 Is there a conversion? to make the 4 point harness a 5 or 6? I thought it would require a new harness.Thanks Link to comment Share on other sites More sharing options...
StevehS3 Posted September 19, 2020 Share Posted September 19, 2020 I added this to my last Caterham 4 point. The lugs are behind the seat for the new strap. There should be a spare socket on your existing harness buckle to accept it.https://caterhamparts.co.uk/seatbelts-harnesses/1195-crutch-strap-plug-into-4-point-black.html Link to comment Share on other sites More sharing options...
CtrMint Posted September 19, 2020 Author Share Posted September 19, 2020 thanks for the clarification. Link to comment Share on other sites More sharing options...
CtrMint Posted September 19, 2020 Author Share Posted September 19, 2020 Sadly out of stock, but I've added myself to the notification. Link to comment Share on other sites More sharing options...
StevehS3 Posted September 19, 2020 Share Posted September 19, 2020 I think they are made by Luke and as it isn't branded it is exactly the same. Might be worth checking Redline too. If you have lowered floors there's a bush needed too https://caterhamparts.co.uk/fittings/3799-crutch-strap-bush-lowered-floor.html?search_query=Crutch+strap+bush&results=50 Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 19, 2020 Share Posted September 19, 2020 The Normal Caterham belts are yes , you can buy direct from Luke, but the fitting kit for lowered floors is easiest from CCAssuming you havent got Schroth in yours..? Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 19, 2020 Share Posted September 19, 2020 Mark / Steve,There is a full kit with bolts washers locknuts and two bushes per side 1 x long and 1 x short, toy need them both to correctly position the anchor plateI will see if I can find it on the CC parts site Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 19, 2020 Share Posted September 19, 2020 Luke also offer a 'moustache' option to as opposed to the 'V' belt CC list Link to comment Share on other sites More sharing options...
CtrMint Posted September 20, 2020 Author Share Posted September 20, 2020 Tbh I thought the two mounts behind the seats were used, I guess that's not true? These are in stock? https://caterhamparts.co.uk/seatbelts-harnesses/1190-crutch-strap-plug-in-to-4-point-red.html i thought they might compliment the red on the 620. Link to comment Share on other sites More sharing options...
StevehS3 Posted September 20, 2020 Share Posted September 20, 2020 I think the red would look great on yours - just enough red keeping the main belts black. I find the harnesses fit much better with the extra strap as you don't tend to pull the waist straps up when you tighten the shoulder straps. I really like the them.I don't think the mounts will currently be used but maybe you can see behind the seats or from underneath to check. Link to comment Share on other sites More sharing options...
CtrMint Posted September 20, 2020 Author Share Posted September 20, 2020 I know we are getting off topic here, but I found this blog and post http://caterham420r.blogspot.com/2016/02/post-iva-work.html (not a blog I've read before). Is that how you fitted yours? Link to comment Share on other sites More sharing options...
StevehS3 Posted September 20, 2020 Share Posted September 20, 2020 It's a while ago now but yes, along those lines. I remember being careful drilling through the floor. The top hole in the bracket, the bottom hole in the bracket and the hole in the floor need to be inline to pass the bolt through. I don't remember it being hard to do but you are drilling the floor so one go to get it right. I used the correct size drill rather than a cone drill.I don't have tillet type seats but I would make sure the buckles are adjusted properly before finally fixing the seat in place as you may not be able to access them easily afterwards. Fortunately I don't find the crotch belt length overly critical so you can move the seat back and forth a little without needing to adjust the crotch belt buckles. Hope that helps! Link to comment Share on other sites More sharing options...
Bricol Posted September 20, 2020 Share Posted September 20, 2020 Google "degloving harness" before getting too comfy about loose or incorrectly adjusted crotch straps . . . Link to comment Share on other sites More sharing options...
CtrMint Posted September 20, 2020 Author Share Posted September 20, 2020 Well that's one of the most unpleasant things I've googled. I think I'll go barf now! Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 20, 2020 Share Posted September 20, 2020 Mark the chassis mounts are used but the long mounting bolt also passes thro the floor so the load is taken in double shear.With lowered floors the belt would pull up under the base of the seat this prevents this happening. pop the seats out and use the chassis mount to mark the hole centre in the floor - straight forward job Link to comment Share on other sites More sharing options...
CtrMint Posted September 20, 2020 Author Share Posted September 20, 2020 Thanks Neil, I was all set to place an order, Bricol's post is a bit concerning and made me think. Though I've sat in numerous rally cars over the years all with 6 points, and they do the damage too (apparently). I need to have a look at how I think I'll sit with the additional strap. Space is much tighter than a rally car seat. I do understand the submarining risk too........ Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now