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tony b
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« Reply #180 on: December 08, 2009, 11:34:30 PM » |
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why do i need to add another set of tubes to the frame ,have i done summat wrong.
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it wasnt me ,you cant prove it;
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toad
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« Reply #181 on: December 09, 2009, 01:09:12 AM » |
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yep look fer the big gaps if you cant see it you should,nt build it  |
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IF IT AINT RED AND WHITE IT AINT RIGHT
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Simple Simon
Hero Member
Karma: 25
Posts: 707
Champion Air Rider
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« Reply #182 on: December 09, 2009, 10:40:33 AM » |
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Toad are you talking about where the backbone meets the seat rails  I was wondering if the support tubes were too far back but having not even started my build yet (it will happen honest ) I wasn't sure if it would work like Tonys build. Tony, I like the general lines you've come up with, it just looks to me that it's quite a gap with alot of stresses with little support. But as I said at least you've started (and nearly fineshed) yours.  |
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I will do it! I will do it! I will do it! I will do it! ........
well in a minute.. or... tomorrow..... OK maybe next week!
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Manky Monkey
Administrator
Hero Member
Karma: 264
Posts: 55102
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« Reply #183 on: December 09, 2009, 11:35:29 AM » |
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Hiya chaps,
we're all here to learn, (me especially), so lets help Tony out here.
Tone, I'm no engineer, but I'm assuming Mr Toad's referring to the point where your top tube meets the uprights either side of the gearbox. Imagine someone pushing down on the top of your frame at that point. You've got a big area there that's unsupported. I know Flap's orange trike is stepped in a similar way, but for a much shorter distance & very heavily braced. I'd suggest either cuttng those uprights out & moving them further forward, to meet as closely as you can with the back end of the top tube, or adding a bracing tube in either side, running from the end of the top tube down onto the uprights, meeting them as low as you can feasibly get them. You could maybe brace it instead, with a heavy duty gusset either side made of flat plate, but tube's probably stronger & would look tidier in my opinion.
Obviously, shifting the uprights forward might create problems with your gearstick routing, but that can be altered. Building a strong, safe frame's more important.
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On the last freedom moped out of Nowhere City.
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toad
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« Reply #184 on: December 09, 2009, 11:44:14 AM » |
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sorry for the curt posting my heads going again. what i meant was maybe the toptube needs more support it looks a bit too unsupported to me |
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IF IT AINT RED AND WHITE IT AINT RIGHT
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Basket case
Sr. Member
Karma: 4
Posts: 344
3 wheels on my wagon...
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« Reply #185 on: December 09, 2009, 12:43:46 PM » |
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Sumink like any of these...? PRESENT SET-UP...  tony b,s trike build POSSIBLE ADDITIONS...  tony b,s trike build  tony b,s trike build  tony b,s trike build Bazza  |
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toad
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« Reply #186 on: December 09, 2009, 12:52:51 PM » |
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thats spot on baz. that,ll do the job |
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IF IT AINT RED AND WHITE IT AINT RIGHT
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Simple Simon
Hero Member
Karma: 25
Posts: 707
Champion Air Rider
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« Reply #187 on: December 09, 2009, 01:07:12 PM » |
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I seem to like the first option, keeps the thing symetrical |
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I will do it! I will do it! I will do it! I will do it! ........
well in a minute.. or... tomorrow..... OK maybe next week!
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tony b
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« Reply #188 on: December 09, 2009, 01:33:57 PM » |
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i was going to give you a mouthfull then toad,but as we are all here to help each other ,and now those pics have been played with ,i can see exactly what you mean ,and can only say thanx ,its only when other people see the thing that they start to notice things,i didnt realise this until i saw the pics ,it will be rectified as soon as i can,
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it wasnt me ,you cant prove it;
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Manky Monkey
Administrator
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« Reply #189 on: December 09, 2009, 06:40:30 PM » |
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I'd go with number one or two, cutting out the existing tubes & replacing them as shown, then add a triangular gusset at the top of each extending back towards the seat. We get lots of feedback through various means here & one of the things we get told a lot is that the MMMotors forum is genuinely helpful & constructive. Some others it seems, just like to criticise & belittle people's builds without saying why or how to rectify them. Criticism's fine as long as it's coupled with an equal measure of advice & help. Other than those 2 tubes Tony, it's lookin' fine to me. Make sure your welds are good & strong & you're well on your way to a nice looking machine. I'm not a big fan of back rests myself, but I like the way yours flows into the luggage rack. You planning a removable pillion seat? Headlight looks quite funky too. |
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« Last Edit: December 09, 2009, 06:59:30 PM by Manky Monkey »
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On the last freedom moped out of Nowhere City.
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ROD
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« Reply #190 on: December 09, 2009, 06:49:24 PM » |
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Tony...Sorta adding to Mankeys last post...Youve done a good job and come a long way mate so please take all comments/critiscism as constructive . Better to be safe than sorry when its in use.Im always ready to be corrected on my trike build! |
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BikerGran
Hero Member
Karma: 94
Posts: 10604
Gran Turismo
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« Reply #191 on: December 09, 2009, 07:16:53 PM » |
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I like the way the first option carries on the line of the top tube - but doesn't it put a lot of strain on that long bottom rail?
Please note I am NOT a builder! Just something that occurred to me.
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You don't stop havin fun because you get old - you get old if you stop havin fun!
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Basket case
Sr. Member
Karma: 4
Posts: 344
3 wheels on my wagon...
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« Reply #192 on: December 09, 2009, 11:19:06 PM » |
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If the existing tube were to be removed and placed more forwards, then would another tube be a good idea, back to where the carrier begins...?  tony b,s trike build Bazza |
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tony b
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« Reply #193 on: December 10, 2009, 09:51:18 AM » |
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mmmmmmmmmmmmm,yer all gone and got me thinkin now,it mat be time to cut up number three,he he ,weres me gas axe.
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it wasnt me ,you cant prove it;
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toad
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« Reply #194 on: December 10, 2009, 10:00:34 AM » |
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dont cut it up just add to it then remove other bits if it does,nt look right. that way you,ll keep the frame straight |
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IF IT AINT RED AND WHITE IT AINT RIGHT
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