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one off plastics???

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hadden
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PostPosted: 20:29 - 30 Nov 2011    Post subject: one off plastics??? Reply with quote

hi chaps/ladies.i have a rs 125 which i want to cut the back end (subframe) off to convert it into a single seat. But my only problem is i want it too look proper. So are there places that you can take a design too and they will manufacture something up?? Dont know if im just being daft but and help will be great.cheers
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Drake
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PostPosted: 20:43 - 30 Nov 2011    Post subject: Reply with quote

find somewhere that does the race seat
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hadden
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PostPosted: 20:46 - 30 Nov 2011    Post subject: Reply with quote

i have looked at them and i will get one of them if i cant do what im planning.or do you mean find someone who makes them and see if they will do a custom one?
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Drake
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PostPosted: 20:49 - 30 Nov 2011    Post subject: Reply with quote

just thought that a single seat unit would solve it, someone would set in making a custom one for you but it would extremely costly
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box
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hadden
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PostPosted: 20:49 - 30 Nov 2011    Post subject: Reply with quote

https://www.customfighters.com/wp-content/uploads/2010/01/bad_bikes_chocolate_streetfighter_03.JPG


thats the sort of style im after but with two round brake lights too

https://www.uponone.com/pictures/773581194702511.jpg
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current:aprilia rs 125
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st3v3
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PostPosted: 21:33 - 30 Nov 2011    Post subject: Reply with quote

I'd print the pics off and take them to my nearest bodyshops and ask about, see if the nice chaps can do something cheap..

Alternatively, buy the bits and do it yourself. Best way to learn and that way you get it exactly how you want it.

You could always ask here for advice Wink
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hadden
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PostPosted: 22:01 - 30 Nov 2011    Post subject: Reply with quote

cool.well ill nip to a few bodywork places i know but im starting to like the idea of some more diy.if i was to do it with fibreglass what could i use for a mould??could you point me in the direction of some help please Very Happy Very Happy
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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fatpies
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PostPosted: 22:04 - 30 Nov 2011    Post subject: Reply with quote

hadden wrote:
cool.well ill nip to a few bodywork places i know but im starting to like the idea of some more diy.if i was to do it with fibreglass what could i use for a mould??could you point me in the direction of some help please Very Happy Very Happy


Make a cardboard mock up and use that as the mould.
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neatbik
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PostPosted: 22:14 - 30 Nov 2011    Post subject: Reply with quote

A few years back there was a bloke making carbon fibre units for the RS125. He would make a batch and stick them on ebay - they sold very quickly.

Try doing a search on there and see if there's any available.
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st3v3
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PostPosted: 00:28 - 01 Dec 2011    Post subject: Reply with quote

If you want to do it simply; buy that unit you linked in and modify it.
If you want to DIY, start with a sketch of the design, and mock up a rough shell in MDF to fibreglass round.
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Teflon-Mike
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PostPosted: 03:12 - 01 Dec 2011    Post subject: Reply with quote

hadden wrote:
cool.well ill nip to a few bodywork places i know but im starting to like the idea of some more diy.if i was to do it with fibreglass what could i use for a mould??could you point me in the direction of some help please Very Happy Very Happy


There's plenty of net resources for GRP molding.

Traditional method is to make a mule first. You make something 'like' what you want your final artifact to look like, in clay, or by modeling clay over a dummy. You then fast fire the clay; coat with a sealant, and polish.

Then you make a mould, by spraying your mule in a release agent, and laying up with plaster of paris; backing that with lint for strength to hold the shape, and mossibly a frame.

Then you drop the mule out of the set plaster of paris, leaving the empty moild you lay your glass into.

Time consuming and not that cheap for a one off part, by the time you have bought required quantities of artists clay and plaster of paris.

More ecconomically; you can make a one off tail-piece or other body section by glass modelling.

Take an off the shelf tail unit or body panel; then section it, and stretch it, slim it, use the contours and elements you want to, and then glue them back together, or fill in the gaps with new glass, on the back, and loaded resin on the front. Skim with loaded resin on the front and sculpt/sand to final shape, then paint.
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st3v3
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PostPosted: 12:08 - 01 Dec 2011    Post subject: Reply with quote

Do you make projects as long as the posts? Razz Laughing

Me, I'd get a pencil and draw the shapes I wanted onto MDF, glue/silicone the parts together to roughly resemble the part I was making.

Then when you got a cheapo wooden version of what you want I'd mix some fibreglass up from Halfrauds etc and mould that over the top. Get the shaping right, let it set, identify the weaker points and re-inforce them.

When it's set I'd tidy it up to look prettier and prep for painting.

I haven't done this before but logically that's what I'd do. This procedure may not be correct in fairing manufacture but I'd try it if I needed. Smile
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hadden
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PostPosted: 17:55 - 01 Dec 2011    Post subject: Reply with quote

cheers teflon mike but that sounds more hassle then its worth.i was thinking along the lines of some wire mess like a car grill sort of thing, molding the shape i wanted then just fibre glassing it up to bollocks so its nice and strong.if that dont work i will try the mdf moulds, and once its the sort of shape i like then comence on the sanding and spraying.thanks for all your help lads.really appreciate it
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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Teflon-Mike
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PostPosted: 12:25 - 02 Dec 2011    Post subject: Reply with quote

hadden wrote:
cheers teflon mike but that sounds more hassle then its worth

Talking traditional laminate 'mould' making; yes, for a 'one off' it probably is. Simply answering your question.

hadden wrote:
was thinking along the lines of some wire mess like a car grill sort of thing, molding the shape i wanted then just fibre glassing it up to bollocks so its nice and strong.


The modelling method, building up over some sort of frame, and sanding to shape, then gelling over.... you suggest, can get you an artificat fairly quickly, BUT have to caution, tends to be fucking heavy!

If you are doing this purely as a styling excersize fine; but if idea is to lop the sub-frame and make the bike lighter?

GRP is only 'light' if used in very thin sections.

hadden wrote:
if that dont work i will try the mdf moulds, and once its the sort of shape i like then comence on the sanding and spraying.thanks for all your help lads.really appreciate it


Laying over a buck, is a half way between moulding and modelling, and you can end up not saving any effort, and still ending up with something rather heavy.

Cut'n'shut re-modelling of an existing part; taking an off the shelf tail piece, cutting up the sections, and gluing them back together, basically, to get the 'custom' shape you want, is more common and the usually more successful way about it, and can result in something not TOO heavy, as well as neat and tidy, for not too much effort.

Biggest boon to cut'n'shut is that where you have more intricate mouldings to make, like rebates for lamps, you can use the pre-formed section, and merely have to blens that into your new structure, rather than create from scratch.
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Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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hadden
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PostPosted: 19:29 - 02 Dec 2011    Post subject: Reply with quote

wasnt going to post this because its purely an experiment at the minute and it looks stupid at the moment.so PLEASE do not say that looks stupid or it wont work because its far from finished but i just wanted to prove a point that im not trolling..im trying to make a basic frame which i can fibre glass straight onto.and its for looks so aslong as it doesnt weigh as much as the back unit im happy.i no it might not work but its only costing me £5 so its a trial and error.
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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hadden
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PostPosted: 19:31 - 02 Dec 2011    Post subject: Reply with quote

forgot the bloody picture...donut!!
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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Damon
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PostPosted: 20:30 - 02 Dec 2011    Post subject: Reply with quote

shocking...

I really think you are better off picking a seat unit you like and building a subframe to fit it... then just trimming the seat unit to the tank.

But good luck anyway Thumbs Up
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hadden
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PostPosted: 22:23 - 02 Dec 2011    Post subject: Reply with quote

i know its chicken wire i was experimenting how easy it would be to get the shape perfect but iv found a fibre glass specialist who sell big blocks of polystyrene which you sand down to the shape you want then pva foil to it so you can separate after the f/g sets.
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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st3v3
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PostPosted: 02:14 - 03 Dec 2011    Post subject: Reply with quote

hadden wrote:
i know its chicken wire i was experimenting how easy it would be to get the shape perfect .
You need to start with something much finer, that's way too big (hole size).
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Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done
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Teflon-Mike
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PostPosted: 15:59 - 03 Dec 2011    Post subject: Reply with quote

I'm giving the kid Khama.
Its a kiddie-go-kwik bike, and to my sensinilities likely to be loads more important stuff he could better spend time on; like basic maintenance or getting tests sorted, BUT I have applied selective sight of old age to focus on the creativity... and he IS showing some imagination, and interest in 'real' craft technique, almost 'old-skool' customisation, not catalogue bling buying...
And he's on the right lines.. if not ideal ones....
Bit of hands on suck-it-and see learing, I am interested to see progress, success or failure..

Keep at it.
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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hadden
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PostPosted: 19:58 - 03 Dec 2011    Post subject: Reply with quote

cheers teflon mike.i have looked at buying all the bits but i want to be able to say i have done all off that.by hand..not "oh i bought it off fleabay" or "yeah it looks good doesnt it,but no i bought it like that so dont know how he did it".anyway iv tried a new technique and it seems to be paying off. Again this is just a practice run to see if the process works properly. Iv done a quick polystyrene mould, and got some pva for the foil to stick incase it melts.what do you think lads?yeah or nay?(this is just to see if it works!!!)
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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Teflon-Mike
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PostPosted: 12:13 - 04 Dec 2011    Post subject: Reply with quote

Looking promicing...

Hint: for internal ribs and stiffening stringers, you can form sections over expanded polystyrene sections that remain under the laminate, rather than leaving a cavity. Can make forming easier, and demand less glass, while 'fill' can also save hollow section forming resonance chamber, killing a bit of vibration/noise.

(But heed implied within compliment. Bikes don't have to look great to go; & a bike that goes well is much more joy than a bike that looks pretty while you are trying to fix it. Also; Count-Down to 3rd Directive means that there's just 55 weeks left to get tests 'done' for a full licence on a 125. Dont let 'creativity' get in the way of, or worse prevent wither of these)
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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hadden
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PostPosted: 18:01 - 04 Dec 2011    Post subject: Reply with quote

whats the 3rd directive???noob question i know but not heard of it??
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red bull gives you wing sting!!!
current:aprilia rs 125
previous:honda c90,honda cm 125,yamaha xt 550,2004 suzuki drz 400.(all used for off road back in the day)and a piagio zip 50cc..oooossssshhhh
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Teflon-Mike
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PostPosted: 14:33 - 05 Dec 2011    Post subject: Reply with quote

hadden wrote:
whats the 3rd directive???noob question i know but not heard of it??


3rd Directive is EU harmonisation eddict, to standardise European driving licence catagories and test procedures.

UK have to change licence laws & test procedures, January 2013 (55 weeks away!) to comply.

Whitehall are being a pain in the arse over releasing info & doing what they are supposed to, BUT we know laws have to change by Jan 13. AND what they 'require'.

Basically from 3rd Directive; you have to test on a bike of 'type' licence group entitles.

We currently have A1 licence group, attanined doing 'light bike' tests, for 125 only licence; testing on a bike under 120cc or not on DSA approval list. This will remain, and only likely change is that you may have to test on full 125 as current 'standard bike' to get it.

We currently have 'A-Restricted', group, which is full A-Group (motorcycle entitlement) no capacity limit, but two year 'probationary' power restriction to 33bhp, tested for on bike 120-125cc and on approval list.

We have full A group, which is unrestricted motorcycle licence entitlement, no restrictions, achieved holding A-Restrict two years, or by testing via DAS if over 21.

From 1013; you will have A2 group, which will replace A-Restrict. Requires testing DAS 'style' on a 400+cc bike you will NOT be able to ride unsupervised on the road, before passing. There is a query whether you will have to have passed A1 first or have held it any length of time to pre-qualify for A2 testing.

DAS age also goes from 21 to 24.

There is a query over L-Plate laws, which 3rd Dir do NOT permit; we may loose them, so possible you wont be able to ride any bike unsupervised before passing a test; so it will be like cars; you will have to take lessons with an instructor, and only be able to ride solo when you have passed tests.

Assurances were offered that we would retain unsupervised L-Plating, but what worth is a politicians promice?

Either way; at 17, if you want a licence you will only be able to take A1 group for a 14.5bhp 125.

Depending on qualifying criteria for A2, you MAY be able to do A2 test, training DAS style on a 500, and testing on it. But the power limit on that will be permenant; you wont get a full A after a certain period. A2 entitlement will restrict you to A2 qualifying bikes until you repeat tests on a Big-Bike DAS style. Paying training and test fees over. And you will have had to have held A2 two years or have reached 24 years old to repeat.

The bug-bear though is whatever the laws may be; Schools are not generally tooling up to cater for A2 candidates. Already ther 'money' is in DAS training where high fees can be charged for intensive courses. not many do much seriouse 125 training, and those that do tend to do it on the back of an existing 125 'fleet' for CBT courses. They would have to buy in another 'fleet' of a" bikes to offerer A2 courses that would be as expensive as DAS courses, for only half a licence and only of interest to 17-24 year olds, who typoically dont spend money on training for 125, and wait until 21 to do DAS, so a limited market.

So; if you fall in the catch-bracket; if you dont get licence sorted THIS YEAR on a 125, its going to be hard and expensive to get a licence, and like as not, if you cant get A2 courses, stuff you on a 125 until you are 24
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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