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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 19:00 - 04 Dec 2016 Post subject: I've just got a trailer for my Enfield |
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Finally taken delivery of my replica PAV trailer. I've decided not to say where from because the guys communications skills were terrible and it's been many months in the arriving.
However. Got it now.
Pav is Czech for peacock and these trailers were made back in the 1950's for fitting as standard to several Eastern block 2-strokes. They are also popular with the Lambretta fraternity. Several Royal Enfield Bullets were supplied to the Indian army with them fitted.
In fact, they still make a version of these in india called an Inder trailer.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/CIMG1620.jpg
Normally you'd need to puzzle out whre to site the hitch. I'm fortunate in that this has already been done, the bike was supplied from the factory with these trailers so I know where the hitch needs to go. I'm just not entirely clear on the fittings to put it there. Here's a factory fitted one.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/20231_original.jpg
Having got it, I now need to assemble the kit, make up the hitch and do the wiring for it. To that end, I've ordered up some alloy box section and some longer top bolts for the shock mounts. Essentially going to make it as two L-shapes of box section that attach to the top shock mount with a brace up to the rear subframe to prevent pivoting. Due to the nature of the hitch, it should only really be pushing or pulling along the bracket, twisting/turning forces will be minimal.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/bracketside.jpg
The end of the trailer is essentially a universal joint. I'll get a bit of steel plate welded to it so I can bolt that accross the short legs of the two 'L's. It'll obstruct the numberplate and taillight when attached but it will have its own plate and light I can plug in. The idea being it'll be pretty simple to attach and remove with a spanner.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/CIMG1622.jpg
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/CIMG1621.jpg
If the alloy doesn't work out, I'll just go for a bit of bent steel flatbar instead. I was going for the alloy for lightness but I'm aware it might not be quite as robust. Worth a try ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Copycat73 |
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Copycat73 World Chat Champion
Joined: 11 Jan 2013 Karma :
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Posted: 20:06 - 04 Dec 2016 Post subject: |
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different ... just different...
that is all.. ____________________ Whatever I post I have no citation and no intention of providing one..
caveat emptor |
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c_dug |
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c_dug Super Spammer
Joined: 04 Sep 2007 Karma :
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 11:57 - 05 Dec 2016 Post subject: |
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Dat chain man. |
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chickenstrip |
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chickenstrip Super Spammer
Joined: 06 Dec 2013 Karma :
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Posted: 12:46 - 05 Dec 2016 Post subject: |
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Paddy. wrote: | Dat chain man. |
Gives a beat to tap your foot to on those long rides ____________________ Chickenystripgeezer's Biking Life (Latest update 19/10/18) Belgium, France, Italy, Austria tour 2016 Picos de Europa, Pyrenees and French Alps tour 2017 Scotland Trip 1, now with BONUS FEATURE edit, 5/10/19, on page 2 Scotland Trip 2 Luxembourg, Black Forest, Switzerland, Vosges Trip 2017
THERE'S MILLIONS OF CHICKENSTRIPS OUT THERE! |
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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virus |
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virus World Chat Champion
Joined: 17 Aug 2006 Karma :
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Posted: 19:47 - 05 Dec 2016 Post subject: |
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stinkwheel wrote: | c_dug wrote: | Ever ridden with a trailer before?
If so, what's it like? If not, what are you expecting? |
Never have. I'm expecting it to be much like riding now, only a bit slower to change speed.
If it's well set up, a single wheel trailer should track exactly with the bike and follow it wherever it goes.
If it's badly set up with regard to height, it'll tend to squat under acceleration and lift the rear under braking.
If it's badly set up laterally or the mounting is insufficiently rigid, it'll crab across the road dragging the bike after it or start a death weave then crash. |
All of your assumptions are correct.
Id also add that overloading it will cause the front to go light, probably less of a problem on your Enfield compared to the old 6/12 or the rather heavy gpz750r that towed before it.
Main cause of fail on something like this really is the rigidity of the mount and making sure its vertical, Id also be tempted to replace that ropey looking connection for a real propshaft UJ should you get any unexpected weaving. ____________________ own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance. |
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
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stinkwheel |
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stinkwheel Bovine Proctologist
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virus |
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virus World Chat Champion
Joined: 17 Aug 2006 Karma :
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Posted: 20:39 - 05 Dec 2016 Post subject: |
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stinkwheel wrote: | virus wrote: |
Main cause of fail on something like this really is the rigidity of the mount and making sure its vertical, Id also be tempted to replace that ropey looking connection for a real propshaft UJ should you get any unexpected weaving. |
I thought the main cause of fail was the owner welding it on with the trailer wheel visibly on the piss in at least two planes and not on the centre line of the bike the night before a rally?
You will note, even at this stage, I've got the spirit level out.
The joint doesn't seem bad actually. It's a proper bearing block when you look at it more closely. |
Hypothetically speaking that would cause quite bad handling issues, I'm willing to bet slightly melting an indepension unit bush with welding heat wouldn't be productive either, hypothetically speaking of course.
Cheers
John ____________________ own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance. |
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lingeringstin... |
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lingeringstin... Trackday Trickster
Joined: 01 May 2014 Karma :
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Feasty |
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Feasty World Chat Champion
Joined: 01 Nov 2006 Karma :
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Posted: 16:29 - 06 Dec 2016 Post subject: |
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Looks nice but you'd never get me in one of them, I'd rather stay on the bike thanks.... ____________________ Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed). |
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pepperami |
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pepperami Super Spammer
Joined: 17 Jan 2010 Karma :
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Posted: 10:43 - 09 Dec 2016 Post subject: |
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Stupid boy! It`ll be fine once the seat is installed and bolted in properly ........ I was wondering where the seat belt anchor points are? ____________________ I am the sum total of my own existence, what went before makes me who I am now! |
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RhynoCZ |
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RhynoCZ Super Spammer
Joined: 09 Mar 2012 Karma :
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Posted: 11:53 - 09 Dec 2016 Post subject: |
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It's nice to see you didn't give up. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 17:28 - 10 Dec 2016 Post subject: |
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Further bracketry mocking up.
I've done this using 30x18mmx1mm aluminium box section.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/CIMG1629.jpg
I'm going to use a slice of solid alloy bar as an insert inside the box section where it's bolted through so it can be tightened right down hard.
One problem is that the top shock mount is the furthest back "solid" piece of bike to bolt to. Everything else is subframe which, while solid enough to mount a pillion seat to, has a certain amount of flex.
https://i48.photobucket.com/albums/f216/stinkwheel/Trailer/CIMG1631.jpg
My next issue is how to join the bits of box section. They're just gaffa taped in position for now. It would be nice to get them TIG welded up. I'm wondering if the parts could be tacked on along a single edge with them in situ as it is now then the whole lot removed and the rest of the welds done on the bench.
Also not entirely sure how well this box section will weld.
Another option is to through bolt it.
A third option is to rivet it with gusset plates over the joins.
I feel the latter two options will land up going rattly and bendy in quite short order.
I may yet give up on the idea of alloy in favour of stronger and easier to work with (but much heavier) steel. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Itchy |
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Itchy Super Spammer
Joined: 07 Apr 2005 Karma :
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Posted: 18:21 - 10 Dec 2016 Post subject: |
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I was expecting a beer keg like Virus's trailer. ____________________ Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching. |
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P. |
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P. Red Rocket
Joined: 14 Feb 2008 Karma :
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Posted: 21:22 - 10 Dec 2016 Post subject: |
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I was expecting a maintained bike |
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The Shaggy D.A. |
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The Shaggy D.A. Super Spammer
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stinkwheel |
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stinkwheel Bovine Proctologist
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RhynoCZ |
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RhynoCZ Super Spammer
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stinkwheel |
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stinkwheel Bovine Proctologist
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stinkwheel |
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stinkwheel Bovine Proctologist
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stinkwheel |
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stinkwheel Bovine Proctologist
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Old Thread Alert!
The last post was made 7 years, 119 days ago. Instead of replying here, would creating a new thread be more useful? |
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