Project overpowered trike

[The Artist]

Refer to this thread for the starter idea.

Started work on the frame today.
Going to be roughly 1.8m x 1.3m with 60hp gsf400 engine hopefully.
The black marks are where some paint caught fire

Things I need to buy


Engine (sorted, but need to pay and pick up, probably in the next 2 weeks.
Front wheels assy. Looking for moped style front forks with wheel, lightweight but able to cope with a bit of battering where a pushbike wheel wouldn't and a full size motorbike wheel and forks would be too big and heavy.
Some sort of braking system
Chain and sprocket, need engine first so I get the right size chain.

[deleted111]

If you could find a moped front end with brakes still attached, that'd be spot on. Just cut the headstock off and weld onto your frame.

Keep the front brake, and then as far as back braking is concerned I'd probably look into getting a split cable.

Lever underneath clutch lever? Split cable running to a caliper on each of the rear wheels? Just an idea, I've not thought about it but it may be feasible.

Looking forward to reading the updates on this

Cheers,

Steve.

[Tristan.]

I'm assuming direct drive rather than a diff?

You really want a motorbike front end, anything lighter and the weight balence will be almost entirely on the rear.

Light front end + skid steering + single front wheel = no steering

[The Artist]

Well the plan is a moped front end if I can find one or motorcycle if I can get hold of one cheaply.

Update on the engine, I may be able to use an fzr1000 exup motor which would just be plain epic, far too much power for it but would sound incredible on a homemade trike.

The engine will be mounted forward of the rear axle which should spread the weight until I accelerate above about 5% throttle where steering will be non existent due to the front wheels being nowhere near the floor.

[deleted111]

FZR1000 EXUP?

Do it.

as far as steering is concerned, could you not just twat a wheelie bar on the back of it or something? Might help to keep the front end relatively low. Steer it through leaning? I'm sure you could get it to drift round corners if you positioned the seat far enough forward to position the weight better or something.

Not sure.

Sounds fucking epic though.

Cheers,
Steve.

[tvchimp]

would something like these be useful?

https://cgi.ebay.co.uk/xt125-motorbike-forks-/190456192959?pt=UK_Motorcycle_Parts&hash=item2c5812dfbf#ht_500wt_1156
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Bike: Currently Bikeless... Gahh

[mad4it028]

if you buy my exup engine i can chuck in an exup front end in cheap
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always looking to buy bikes crashed ,unfinished projects,none runners pm me
currently riding kawasaki z1000 only bike ive ever loved

[The Artist]

[The Artist]

Today was fairly productive.

Managed to source a rear axle from an old trike. Bought off one of the technicians at our college for £20. Turns out he has a spare front end off an old trike. Wheel, forks, brake, mudguard etc so that was purchased aswell for another £20.

All that needs to be done now is weld the axle and brake assy onto the frame, weld the front end on and weld the engine on which I don't have yet.

Anyway, here are pics of the axle and cut down frame. We had to shorten it for the axle to fit.

https://www.bikechatforums.com/files/imag0229.jpg

https://www.bikechatforums.com/files/imag0230.jpg

https://www.bikechatforums.com/files/imag0231.jpg

As you can see this axle is smaller than I had anticipated and putting mad4it's exup engine on there will not do it any favours and I have located a tasty gsf400 engine which will be more suited to this. 60hp still enough to wheelie and do some damage though.

I am hoping this drifts like a mofo and if it is really unstable (which I hope it is), welding some skids on the front corners would be awesome. Just throw it into corners.

[B10Hazard]

Frickin awesome !
I wanna go
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Current bike .. The police stole it
No longer any socks
Let me take you on a trip . . let me show the world in my eyes.

[chillyman0]

looks good, the chain comes out of the left side of the engine with most bikes so you may have to flip over the axle depending how it works.

you should have shown me this earlier... I have a complete Skyjet 125 thing thats like a shitty copy of the xr125 with big front wheel and has all of the controls, brakes, etc that has been rotting for a few years in my garden also that you could have had lol
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preivious : 2007 Skyjet 125 (died), 1991 gsf400 (problems, rotting in garden)
1996 gsf600n (sold)
current : 1996 VFR750 for sale, PM for info! 2000 E1 ZX-9r

[The Artist]

The sprocket will attach to the left side anyway so no need for flipping over unless I used an rs125 engine.

It goes on that gold looking thing.

A guy at college told me a good idea for getting a sprocket on. Cut it in half, put on and bolt on. Won't make too much difference because it will be bolted, then if need be, do some symetrical welding, and it shall be alreet.

[Herbalrick]

Cabbie from the london bikers has a free set of CR250 forks going spare.


https://londonbikers.com/forums/Topic751893-40-1.aspx
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Current Bike: 98 XJ600S Diversion
Previous Rides: Piaggio Zip 50cc - Various 125cc Honda Wave/Innova things in Thailand - Yamaha YBR 125

[The Artist]

Today didn't get much done but more pics.

https://www.bikechatforums.com/files/imag0235.jpg

https://www.bikechatforums.com/files/imag0234.jpg

https://www.bikechatforums.com/files/imag0233.jpg

[N cee thirty]

whats nigel said about this ?
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[CHR15]

thats a very shallow rake?
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Ste: I'm not entirely sure how you'd go about verbally abusing someone with a potato but I'm sure it's possible.

[The Artist]

Nigel has nowt to do with it.

The forks won't be at that angle when welded. That is a mockup pick.