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Author Topic: Riley Special chassis (Bridget the Riley)  (Read 6909 times)

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #120 on: 14 March 2021, 06:28:58 pm »
Ive thought about that but tbh i dont think it will be either butch enough for the job, or else accessible enough to allow easy ish replacement. The dash already has enough structural responsibility as it is without being relied on to hold the steering wheel as well.
My idea has gone through a couple of design evolutions but its pretty much there now - im going to use the spare 8mm ubolts i have to hold a couple of nylon bushes in place on the steel box section cross members, via an intermediate plate to hold the Ubolts which will be itself riveted to the box section steel.. The one at the bottom end will be pretty much exactly as shown in the pic below, and the top one will be split to allow the shaft to be completely removed if necessary. Theyre both made from some sort of nylon bearing material i got in a job lot of bearings, bushes and shafts from a house clearance, but whatever it is it machines very well and seems like it will do the job nicely. I realise you can just buy split blocks from Gemini amongst others specifically for this task but i felt like having a play with the lathe ;c)

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #121 on: 14 March 2021, 06:34:26 pm »
This might seem like an awful lot of faff but the one thing about this build that ive already learned is that it pays to think ahead- at some point (probably shortly after initial test drives) im almost certainly going to have to remove stuff, fettle it and stick it back again, but once all the wooden bits are glued up therell be much less ready access to the innards than on a standard CK with a separate chassis and body. So im having to think quite a few steps in advance of where i am now in order to not paint meself into a corner...

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #122 on: 15 March 2021, 08:19:13 pm »
Right, steering brackets sorted! I ‘simplified and added lightness’ to my previous plan and came up with this- some wire clamps to hold the plate onto the threaded cross rods, and the bits i made in the lathe yesterday held on with U bolts. Im going to add a strengthening ply either side to man up the structure a bit, and have some locknuts and washers on the inside as well, at the dashboard end. The other end goes through the suspension mounts so should be plenty strong enough.

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #123 on: 07 April 2021, 09:44:28 pm »
Right- quick update;
Im still waiting for the weather to get hotter so i can finish glueing and painting and stuff.

Longer update- ive made new brackets for the top and bottom of the steering column out of L angle aluminium, machined up some hub adaptor plates for my c90 rear wheels, bought a rear axle and sprocket, started making some front suspension shackle mounting brackets, and am getting closer to finalising the engine bay. It might even end up only involving 4 simple welds that even me with my stick welder will be able to do.
Having the rear axle with the two wheels in place on the back end has given me an enormous boost in excitement, cos its all looking really really good. Wider and squatter than i thought, and staring at the back end with my imagination head on i can start to visualise what the rear end/engine cover will look like. Which is nicely exciting. Im hoping to have it all on wheels in the next few weeks. ACE.
Ive also finally worked out optimum positions for all the dashboard instruments and switches and actual blinkenlichts and stuff; tach counter/hour meter, ammeter, speedo and clock L-R along the top. Engine Kill switch on top right, switches and fuses for Kipple, Frivolity and Unnecessary Complication down the bottom, L-R.

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #124 on: 07 April 2021, 10:58:07 pm »
Found another progress pic- i made another torsion box out of the marine ply to beef up the dash area, reinforced via more threaded bar, long nuts, lock nuts, big washers and other lock washer type things. The upper steering support has subsequently also been beefed up, and holds the dash in place at the bottom. Ive modified my plan with regards to the scuttle away from a simple wooden structure, im now thinking shaped aluminium sheet.

Marek.Z.N

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Re: Riley Special chassis (Bridget the Riley)
« Reply #125 on: 08 April 2021, 09:46:52 am »
Looks really cool and the dashboard plan looks busy and impressive. Cant wait to see it in person at some point.

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #126 on: 11 April 2021, 08:36:55 pm »
Rear axle G clamped to the rear chassis for a 4 wheels on test- hooray!

Marek.Z.N

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Re: Riley Special chassis (Bridget the Riley)
« Reply #127 on: 11 April 2021, 10:32:31 pm »
Looks cracking!!

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #128 on: 08 May 2021, 10:17:59 am »
Right-update time-

Im still astonishingly pleased with all the progress i made up until about a month ago. Having a chassis on wheels in the garage is a great feeling; it no longer feels like im building a huge, expensive rabbit hutch...
..
.
I say ‘building’....
Tbh i havent had the time to do very much else with it since then, as Mrs Synthpunk’s maternity leave has ended, and is back doing nights at the NHS, so im now primary childcare during daylight hours when im not at work and most evenings, so available tinkering time has dropped off to about an hour an evening, max. Which is quite often spent nursing a beer and trying not to feel so tired, staring at things, trying to work out what to do next. Im not complaining; the tiny synthpunkette unit is a wondrous beastie and i am loving spending so much time with her, but its deffo made progress on dadprojects much slower.

Having said that; the chassis is pretty much there now anyways. Needs its skins putting on, as the biggest job that remains undone, then painting etc of course. Ive been working on the metal bits; pedals, steering, engine bay. I now have a Lifan engine with electric start, and a TAV should be turning up today, so thats all the major purchases made now except for the bits to make the tailcone.
The pedals im also quite pleased with so far. They are mounted onto an aluminium sub frame that bolts in via the existing stays and bolts for the steering and suspension, so no extra holes needed in the chassis members. I didnt like the ‘throw’ of the accelerator under foot, so ive made a new pedal to actuate the mechanism, and modified the mechanism to give me a linear push/pull on the throttle cable without bending it round anything, or snagging it anywhere, with adjustable end stops and the ability to tweak both the throw of the pedal and the travel of the actuator independently. Ill post a pic in a bit.
Ive also started servicing the brakes. I got em second hand (cheers Rhys!) and they were basically blocked up solid with dirt so a good clean later and theyre looking much better. At some point im going to make a handbrake to go with it.

So there we are- still progress, just nowhere near as fast. Im now hoping to get her finished by the end of the summer, realistically.
Cheers!
Rich

synthpunk

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Re: Riley Special chassis (Bridget the Riley)
« Reply #129 on: 12 June 2021, 12:54:58 pm »
Thought it might be time for an update-

Ive worked out the engine mount. Its a sheet of 8mm thick 6082 aluminium, that can slide backwards and forwards under the aluminium angle of the main rear ‘subframe’ thanks to some cunningly shaped bits of ally ‘Z-rail’ i found in my parts bin. Once upon a time they were part of a very expensive Calrec mixing desk that was installed in BBC Radio Norwich. Anyways, therell be a belt tensioning mechanism that involves moving the engine plate backwards and forwards and then bolting it down.

The skins should be going on this weekend. I could potentially then paint the whole thing white. However; id quite like to wrap the whole lot in epoxy glass first, which brings up a problem- the Cuprinol the whole structure is doused in might well stop the epoxy from penetrating fully. So- im going to veneer the whole car first. The veneer will glue to the cuprinol fine, and allow the glass to stick properly. I bought a joblot of veneers some years ago from the estate of a friends uncle. Ive got enough veneer to do about 3 cars, or an entire dining table and chairs with matching side tables... Indian rosewood, brazillian figured mahogany, ripple Sapele, walnut, figured english oak, figured maple (american) and English Sycamore. There is a strong temptation to make a high speed regency chest of drawers; all flamed mahogany and rosewood, but i think ill go for Sycamore bodywork, figured oak chassis and walnut and rosewood dash/cockpit trim. So even with just the epoxy glass applied, shell be pretty white even without paint.

Veneer has a reputation for being fiddly. It is. But i think this job will be pretty simple as far as veneer goes. No bookmatching, no inlay, just a load of glue, some clamps, and an ordinary household iron... the the veneer will be applied in strips angled at 45 degrees over the carcass, so compound curves are no problem. Should look like its been cold moulded, hopefully.