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Thread: Trailer build project

  1. #16
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    Quote Originally Posted by mossy1200 View Post
    trailer weight needs be less than half curb weight of bike so idd expect 35kg would be easy for single wheel mines under that .It didnt say if that would need be loaded or bare.Hornet must be about 180+ curb weight prob.Trailer under 2 ton doesnt need certified just standard warrent check and new plate was $110 with 1year warrent 6months rego and new plate.
    You are over thinking it. When it says half the curb weight of the bike it doesn't have to say loaded or bare. Whenever you tow it it has to be half the curb weight of the bike, loaded OR bare. If you tow it bare then it is bare, if you are towing it loaded then you can only load it up to half the curb weight (load + plus trailer). At any time the weight trailing behind the bike can only be up to half the curb weight of the bike.

  2. #17
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    Brilliant Idea.... But
    Can't help but think A build like this should be certified Looks to me at first glance that there is a hell of a lot of wieght being thrown down on the U plate ! A close up photo of the bikes axle (wieght bearing) point would be nice ?

    Great concept though, with the shit we carry when the Mrs comes along !!
    A girlfriend once asked " Why is it you seem to prefer to race, than spend time with me ?"
    The answer was simple ! "I'll prolly get bored with racing too, once i've nailed it !"

    Bowls can wait !

  3. #18
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    Quote Originally Posted by sinfull View Post
    Brilliant Idea.... But
    Can't help but think A build like this should be certified Looks to me at first glance that there is a hell of a lot of wieght being thrown down on the U plate ! A close up photo of the bikes axle (wieght bearing) point would be nice ?

    Great concept though, with the shit we carry when the Mrs comes along !!
    search ssmossy1200 on you tube has a bit closer look at the hitch.the axel is 16mm shiney steel turned to 15mm thread for nuts with 1mm thick spacer tube machined to hold 17mm internal 30mm external eye bearings.The U arm is 50mm by 10mm thick and i plan to brace it a bit more just to remove flex.Load is approx centre on trailer wheel and axel.so 35kg load 35kg trailer weight would be 35kgon axel and same on rear.Have just removed trailer now to do fork seals on bike and had a good look at spacers etc for wear and all looks good.

    I guess they make rules based on car trailers which are no cert under 2000kg and its likely a bad build on 2ton trailer would be dangerous also.To me it feals safer than overloading a pack rack and side bags with loaded tank bag 2 up but i wouldnt want to load the trailer up to much.Open road feels good under 10kph is the only time it feels unusual.

    Also i forgot to mention the U shape is slightly A shaped its 40 mm wider at axel than it is before the bend so that the 2 sides fight against each other to stop sideways sway.Thats why im using eye bearings not standard bearings due to the slight angle.The rear behind bearing has plate welded on and plate bolted on front to prevent bearing movement.
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  4. #19
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    Hope that helps

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  5. #20
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    Quote Originally Posted by mossy1200 View Post
    Hope that helps


    Cheers for going into this a bit deeper Mossy, i am intrigued with it !
    Had a look at ya youtube channel and the pics !

    So if you were to un hitch the U bar from the buckets front end pivot point, the U bar would drop down to the ground, IE; pivoting up and down on the bikes axle, am i correct, or are there locking pins to stop this ?

    Now i'm not an engineer so should perhaps just shut up, but i like the concept and won't hold back from poking ideas your way to maybe help make it bigger better and stronger !

    I can't help but think all the wieght of the trailer is held up by one weld (that being the horizontal plate welded onto the U bar where the buckets pivot is mounted)
    Sure the 35kg load + 35kg trailer would be split between the buckets wheel and this point but it's still 35kg at that point ? Add bounce ?
    Now again i'm not a physicist but could that 35kg at that point not double or more, if you went over a good wallow, given our roads are not paved in concrete and there's a lot of undulation !
    I see in one pic a rod which i presume is a brace for this weld which looks to go to a point directly below the pivot axle ?

    Again only an Idea, but i'd be bracing the hell out of it, perhaps adding anothe kg or 3 of steel and several more inches of weld so you can see a crack coming weeks ahead of disaster ! Then i'd be looking to where that stress might transfer to, once i'd done that, which looks like it might be the shaft in the pivot head of the bucket ?

    Again, just an idea but have you thought of maybe a couple of steering dampers on the pivot ? Or are they what you can just see pretruding undernieth in the vid ?
    To
    A/ Help stabilise and slow any slap that may happen under emergency braking
    B/ If the shit did hit the fan and the pivot pins welds fractured, they would act as a safety chain effect maybe !

    That vid of the naked trailer was cool !
    What was the tube that ran from the pivot head internally in sort of the same line as the mono shock ? Looked like it was carrying wiring and what else ?
    A girlfriend once asked " Why is it you seem to prefer to race, than spend time with me ?"
    The answer was simple ! "I'll prolly get bored with racing too, once i've nailed it !"

    Bowls can wait !

  6. #21
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    Quote Originally Posted by sinfull View Post
    Cheers for going into this a bit deeper Mossy, i am intrigued with it !
    Had a look at ya youtube channel and the pics !

    So if you were to un hitch the U bar from the buckets front end pivot point, the U bar would drop down to the ground, IE; pivoting up and down on the bikes axle, am i correct, or are there locking pins to stop this ?

    Now i'm not an engineer so should perhaps just shut up, but i like the concept and won't hold back from poking ideas your way to maybe help make it bigger better and stronger !

    I can't help but think all the wieght of the trailer is held up by one weld (that being the horizontal plate welded onto the U bar where the buckets pivot is mounted)
    Sure the 35kg load + 35kg trailer would be split between the buckets wheel and this point but it's still 35kg at that point ? Add bounce ?
    Now again i'm not a physicist but could that 35kg at that point not double or more, if you went over a good wallow, given our roads are not paved in concrete and there's a lot of undulation !
    I see in one pic a rod which i presume is a brace for this weld which looks to go to a point directly below the pivot axle ?

    Again only an Idea, but i'd be bracing the hell out of it, perhaps adding anothe kg or 3 of steel and several more inches of weld so you can see a crack coming weeks ahead of disaster ! Then i'd be looking to where that stress might transfer to, once i'd done that, which looks like it might be the shaft in the pivot head of the bucket ?

    Again, just an idea but have you thought of maybe a couple of steering dampers on the pivot ? Or are they what you can just see pretruding undernieth in the vid ?
    To
    A/ Help stabilise and slow any slap that may happen under emergency braking
    B/ If the shit did hit the fan and the pivot pins welds fractured, they would act as a safety chain effect maybe !

    That vid of the naked trailer was cool !
    What was the tube that ran from the pivot head internally in sort of the same line as the mono shock ? Looked like it was carrying wiring and what else ?
    Tube in the centre was brace and held the coil when it had dt100 engine in it.the Bags connection fron straps that run under the main chasis run back up to it and is there fixing point now one for each side.

    The brace is a cut down wheel tire iron.Where it comes up the plate has been drilled so it passes through the plate and is deep welded top and bottom.The end that comes onto the U is the nut end which is deep welded also.The weld on the plate is underneath and it was a angle cut and deep welded from the tire side also so is two side welded.(Engineer did the U bracket welding for me).

    The fixing of the shaft is via the original steering head shaft and 2 solid bar with centres drilled out and 14m threads taped and 14mm bolts.A small nut and bolt added to prevent flex also that you can see in one photo.Top of the shaft has a spacer made where top fork clamp was then the original steering head nut.I have added a pin arrangement and lock wire stainless which is classed my safety chain.
    Trailer under 2 ton must have safety chain or wire but there is no law as to how big it needs to be.I never take the steering head apart when remove trailer i pull the shaft through my hollow axel like removing a wheel.Takes 5mins to remove and 10 to reinstall.One nut and a cotter pin for removal only.

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    note the fork tripple clamp is reversed now from the picture so its underneath the chasis.
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  7. #22
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    Quote Originally Posted by Gremlin View Post
    If I remember correctly, the law banned trailers on learners and restricted licenses.

    Looks like a damn fine job... to be fair, I don't think you're carrying all that much, it's for two people and you're camping. Maybe I just carry too much shit.

    Used camping trip as a load test.True test will be bike rally no passanger and a keg plus undies and socks.
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  8. #23
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    New muffler lucky find

    Ordered some from carbon fibre fork guards from ebay which arrived this week.Look good was playing around looking at carbon bits on net and hit the mother ship......

    http://www.trademe.co.nz/Browse/List...x?id=438160856


    couldnt resist $500 and in the country.Priced them new at about 1800 landed which was outa my budget for a long time but couldnt resist at 5.
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  9. #24
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    Looks like 25th is the South Island trailer escape.Good news is that the ferry isnt going to charge extra for the trailer on the crossings as they dont think when i fold it 90% that it warrents extra cost.$332 return 2 people and bike isnt to bad.Its seems almost the same price as a few years ago.

    Fitted the gprs and they sound great and the extra couple horse is noticable I think that it maybe more so because it seems to have extra torque also.They look ok but the gpr clamp mounts arnt the best so im making my own instead.The tail tips arnt the best looking so I may remove the tips and get others when I have nothing better to do.
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  10. #25
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    Good job and a innovative approach.

    I wonder if the U arm would be better off being fabricated out of a lightish wall rectangular tube stock or similar - lighter and stronger.

  11. #26
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    Quote Originally Posted by AllanB View Post
    Good job and a innovative approach.

    I wonder if the U arm would be better off being fabricated out of a lightish wall rectangular tube stock or similar - lighter and stronger.

    Im thinking maybe something along this line again using eye bearings and tube steel.
    May not have time to make before holiday.I do have enough ally thick bar to reinforce what i do have using the ally as a second skin and taping hex head taper bolts into the steel existing U every 50mm.
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  12. #27
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    Ok I modified U arm so it has more strength and also have it connected to top of triple clamp area to stop shaft movement.Sorry not on bike for photo i needed trailer of mto get bike warrent dont today.They couldnt check swingarm bushes while trailer on back.
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  13. #28
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    Quote Originally Posted by AllanB View Post
    Good job and a innovative approach.

    I wonder if the U arm would be better off being fabricated out of a lightish wall rectangular tube stock or similar - lighter and stronger.
    swinger upgrade tests alot nicer at low speeds.Seems alot firmer ill leave tube for after trip and do if im not happy as winter project.
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  14. #29
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    Quote Originally Posted by mossy1200 View Post
    Ordered some from carbon fibre fork guards from ebay which arrived this week.Look good was playing around looking at carbon bits on net and hit the mother ship......

    http://www.trademe.co.nz/Browse/List...x?id=438160856


    couldnt resist $500 and in the country.Priced them new at about 1800 landed which was outa my budget for a long time but couldnt resist at 5.
    Great find,hell of a price.Can you post up a pic of the fork guards please?,ive always just covered mine in scuff -stuff which has worked well protecting forks legs from stone chips etc but these things you have sound good.Trailers simply awesome.
    Be the person your dog thinks you are...

  15. #30
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    Quote Originally Posted by 98tls View Post
    Great find,hell of a price.Can you post up a pic of the fork guards please?,ive always just covered mine in scuff -stuff which has worked well protecting forks legs from stone chips etc but these things you have sound good.Trailers simply awesome.

    http://www.ebay.com/itm/140664578720...WAX:IT&vxp=mtr
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