scootz
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| posted on 17/7/11 at 04:18 PM |
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quote:
Originally posted by T66
Its a valid point avoiding all the Windle Welding, its going to look (and go) very well Scott.....
Yup, the fabrication work to get the Swift chassis triked would have been mega-expensive.
It's Evolution Baby!
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Minicooper
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| posted on 18/7/11 at 10:22 AM |
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quote:
Originally posted by scootz
Thinking about the roll-hoop assy.
I'm going to have a stainless plate with a T45 hoop welded onto it. Can anyone suggest a thickness for the plate and a wall thickness for the
hoop?
The plate will be fitted using 8 bolts (yellow dots) and 2 harness bolts (red dots).
You have may of already mentioned it, but is there any bracing of any sort? If not or it's not possible, how about running the main hoop legs
through the plate and brace them lower down on the vertical
Cheers
David
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scootz
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| posted on 18/7/11 at 10:26 AM |
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Hi David
There are aluminium honeycomb panels sandwiched between the CF in various parts of the chassis (mainly front / rear).
These provide the strength for mounting points, roll hoop, etc.
It's Evolution Baby!
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Sam_68
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| posted on 18/7/11 at 06:40 PM |
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quote:
Originally posted by scootz
Hi David
There are aluminium honeycomb panels sandwiched between the CF in various parts of the chassis (mainly front / rear).
These provide the strength for mounting points, roll hoop, etc.
You mean solid aluminium hard-points/plates sandwiched between the CF, hopefully? Honeycomb isn't strong enough to bolt anything to!?
The other solution is to use threaded 'top hat' inserts that are screwed-and-bonded into one another from either side of the honeycomb
panel, allowing you to bolt on steel brackets/flitch plates. The advantage here is that you can add them later (if you know what you're doing
and ensure that the loads are spread across a sufficient skin area on the panel), whereas moulded-in hardpoints obviously have to be moulded in at the
outset. This pic shows an example (actually a front suspension mounting bracket, but you get the idea):
Rather than using a big, flat steel plate to mount your roll bars and harness to, as you show on your photographs above, you'd be better using
smaller angled plates that wrap around the corners of the monocoque; that way, no matter what the direction of the loading, you'll ensure that
it is fed into the carbon fibre skin in shear (good) rather than tension/compression (bad). The photo below should hopefully illustrate what I mean.
1/8" thick steel should be more than adequate if you design it correctly, though the roll bar on the car in the photo is actually aluminium, for
lightness:
[Edited on 18/7/11 by Sam_68]
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Uphill Racer
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 posted on 19/7/11 at 12:29 AM |
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I agree with Sam regarding hard points.
Ian Scott ran the roll hoop down the back of one of his carbon tubs plated to the side too. The rear sub frame hung off of it as well. If your hard
points are in the tub as in your pics I would use them to do both jobs at once.
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scootz
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| posted on 19/7/11 at 06:28 AM |
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Cheers fellas.
I'll take some screen shots of the cad drawings showing the hard points. IIRC, they are 'L' shaped to connect vertical faces to
horizontal faces.
It's Evolution Baby!
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scootz
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| posted on 19/7/11 at 06:49 AM |
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CHASSIS CAD DRAWING - SIDE PROFILE
Inserts are in purple...
It's Evolution Baby!
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scootz
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| posted on 19/7/11 at 06:52 AM |
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CHASSIS CAD DRAWING - REAR BULKHEAD
Inserts are in purple...
DRAWINGS OF MOUNTING HARDWARE
Mainly clevis style...
ENGINE AS HUNG ON ORIGINAL FORMULA VEE
It's Evolution Baby!
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scootz
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| posted on 19/7/11 at 06:56 AM |
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CHASSIS CAD DRAWING - FRONT PROFILE
Inserts are in purple...
FRONT AXLE AS HUNG ON ORIGINAL FORMULA VEE
I won't be running the trike anywhere near as low as the race-cars, so plan to shift the torsion-beams down a few inches so all mounting points
are flat to the face of the front bulkhead.
It's Evolution Baby!
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scootz
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| posted on 19/7/11 at 07:03 AM |
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CAD DRAWING OF ROLL-HOOP
This was the roll-hoop as used on the race car. It was approved by the regulatory body. Note that it bolts directly onto the chassis from underneath
the top-chassis panel.
It's Evolution Baby!
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matt_gsxr
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| posted on 3/9/11 at 11:07 PM |
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I just noticed that there were a couple of tubs that look (to me) identical to that which scootz is building up.
These are advertised as new in http://www.trackdriver.com/
http://www.motorsportads.com/race-cars/single-seaters/21521.html
Just thought it might be useful for someone who wants to go down the same route as Scootz (but hasn't got the time to wait for him to sell-up
)
Matt
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scootz
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| posted on 4/9/11 at 09:10 AM |
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Yup... that's the same one. He's cut and paste his old advert though and there's actually only one left. I thought about buying
the two of them in case I had an accident with one, but the funds just wouldn't allow. 
It's Evolution Baby!
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scootz
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| posted on 8/10/11 at 10:19 PM |
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Latest progress:
It's Evolution Baby!
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HowardB
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| posted on 9/10/11 at 05:02 AM |
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wow! Would the bmw engine make a good BEC?
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again and goes zoom)
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scootz
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| posted on 9/10/11 at 02:49 PM |
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quote:
Originally posted by HowardB
wow! Would the bmw engine make a good BEC?
Not really Howard. The BMW engines need to have their cylinders out in the airflow (air-cooled), they're not very powerful at 110bhp
(typically), and they tend to be expensive.
The HP2 Sport engine that I'm using is a step above the normal BMW 1200 boxer-twin (it has fancy internals and has been ported and polished to
within an inch of its life at the factory). It should hit 140bhp with a good airbox, exhaust and mapping, so plenty powerful for a sub-300kg
(hopefully) reverse-trike! Unfortunately they are like hens-teeth and fetch around £3k for a complete one (with gearbox). I lucked-in when I found
mine at the time I did... and the price I was offered! It's not often that happens to me 
It's Evolution Baby!
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ceebmoj
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| posted on 9/10/11 at 06:33 PM |
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Some nice, fabrication there cant weight to see the progress.
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T66
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| posted on 9/10/11 at 07:15 PM |
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Scott - You need to give the guys at Mansfield a big up , not for the smoked trout ,chips & hospitality, but their big big talent with bits of
tubing and a welder.
Chips are on me next time round, and if they want an apprentice tx me.
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HowardB
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| posted on 9/10/11 at 08:48 PM |
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quote:
Originally posted by scootz
quote:
Originally posted by HowardB
wow! Would the bmw engine make a good BEC?
Not really Howard. The BMW engines need to have their cylinders out in the airflow (air-cooled), they're not very powerful at 110bhp
(typically), and they tend to be expensive.
The HP2 Sport engine that I'm using is a step above the normal BMW 1200 boxer-twin (it has fancy internals and has been ported and polished to
within an inch of its life at the factory). It should hit 140bhp with a good airbox, exhaust and mapping, so plenty powerful for a sub-300kg
(hopefully) reverse-trike! Unfortunately they are like hens-teeth and fetch around £3k for a complete one (with gearbox). I lucked-in when I found
mine at the time I did... and the price I was offered! It's not often that happens to me
Was just interested to see, I guess it looked interesting, but as you say is not the best option, but looks awesome on your kit!! Look forward to
seeing it when it's complete,..
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again and goes zoom)
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scootz
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| posted on 9/10/11 at 08:56 PM |
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quote:
Originally posted by T66
Scott - You need to give the guys at Mansfield a big up...
Thats coming!
It's Evolution Baby!
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welderman
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| posted on 10/10/11 at 07:54 AM |
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I must say it's looking very good there mister
Thank's, Joe
I don't stalk people
http://www.locostbuilders.co.uk/forum/23/viewthread.php?tid=172301
Back on with the Fisher Fury R1
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scootz
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| posted on 10/10/11 at 11:20 AM |
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Cheers fella... how's the pro-turbo-blade-comp thing coming on?
It's Evolution Baby!
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kipper
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| posted on 10/10/11 at 11:32 AM |
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reverse trike
WOW, looking great Skootz, makes mine look like a HGV
Denis.
Where did that go?
<<<<
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welderman
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| posted on 10/10/11 at 11:42 AM |
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quote:
Originally posted by scootz
Cheers fella... how's the pro-turbo-blade-comp thing coming on?
Comin on a little. Brake lines next
Thank's, Joe
I don't stalk people
http://www.locostbuilders.co.uk/forum/23/viewthread.php?tid=172301
Back on with the Fisher Fury R1
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scootz
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| posted on 10/10/11 at 06:40 PM |
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quote:
Originally posted by welderman
quote:
Originally posted by scootz
Cheers fella... how's the pro-turbo-blade-comp thing coming on?
Comin on a little. Brake lines next
Which silly bugger took them off in the first place!?
It's Evolution Baby!
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scootz
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| posted on 10/10/11 at 06:40 PM |
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It's Evolution Baby!
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