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Messages - Seven racer

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31
Off Topic / Re: New cyclekarts in 2023
« on: 08 Jan 23, 07:37 pm »
All the pressure is on at the moment to get 'Kay'  up and running for the new season.

I'm slowly going through, doing all the bits that were missed on the first pass, and which take all the time, I don't think it will be painted, and it might not have a tail at first, but I think I'm only a couple of weeks off having it running.

I suspect most of the year will be spent troubleshooting and screwing bits back on, but who knows, first step is just to get it driving.

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Peter

32
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 04 Jan 23, 07:25 pm »
The build gets back ontrack, after about a month off for holidays and other stuff.

I have spent a couple of days getting some final details sorted on the front end, the grille has been fitted, and I managed to get the bars test fitted.

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The bonnet is now finally fitted, and the dummy header tank fitted,

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Next up, sorting curved louvres on a plastic bonnet, time to start cheating......

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Peter

 

33
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 02 Dec 22, 08:14 pm »
The final assembly of a running chassis is coming along well, managed to get the bonnet fitted today, still a bit of fettling to do, and louvres to sort, but it's getting there.

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The bolts are getting all the modern markings filed off the heads, and wired to look a bit 'period'

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And the machine turning, that none will see, is installed on the front of the chassis

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So it's all starting to come together at last, hopefully I can get it running in time to get some testing done before the season starts.

Peter

34
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 30 Nov 22, 05:35 pm »
Having emptied the garage temporarily, to get the boiler serviced, I am now able to start reassembling the cyclekart.
It will need a strip down and reassemble  for paint, once I know nothing falls off, but I'm finding I am getting distracted by detail at the moment, so if I manage to roll the cyclekart please take the time to admire the aluminium bracing on the underside of the chassis, it's the only time you will ever see it. :)

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Peter

35
Tech Forum / Re: Pitman arm types
« on: 02 Nov 22, 10:30 pm »
Thanks Stefan,
so it's Ackerman that improves, useful to know, and think about before I finally put the front end together. :)
Peter

36
Tech Forum / Re: Pitman arm types
« on: 02 Nov 22, 08:00 pm »
As an aside, I have noticed a couple of cyclekarts using a steering box, or Pitman arm operating one steering arm on the front axle, and a solid bar across to the opposite steering arm.

Is there any advantage, or disadvantage of this arrangement? The only thing I can think is that it might help with bump steer, but I'm really not sure, or why it's used as an alternative.

Peter

37
Tech Forum / Re: Getting the best out of you Torque Converter
« on: 15 Sep 22, 08:32 am »
Thanks Jim,
That seemed the easiest way to me, as I can 'ghetto' engineer it, but I thought it best to check first, most helpful,

Peter

38
Tech Forum / Re: Getting the best out of you Torque Converter
« on: 14 Sep 22, 08:16 pm »
Wondering if you can steer me in the right direction on the reverse box Jim, I've hit a small snag as the spacing between chain drive and TAV belt differs between the engine and reverse box.
It appears that my input shaft to the gearbox has a shouldered section at the end, of about 9mm, which pushes the top TAV pulley out further.

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Because of the close proximity of the engine to the chain wheel, I can't just move the engine across, as it will foul the chain.

Thus I think there are three options,
To drill out a short section of the TAV top pulley to fit over the 20mm section of the shaft.
To take the gearbox apart and get the 20mm section turned down to 16mm
Or less likely, put a spacer on the engine end of the TAV drive to push the bottom pulley out the required 9mm, but there's not a lot of shaft anyway, so this seems the least desirable option.

Did you have a similar issue? Or does your set up allow you to move the engine across?

Peter


39
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 05 Sep 22, 04:04 pm »
Struggling with Covid at the moment, but things are starting to feel a bit better, so today I went out into the garage to see if I could get some progress on the transmission.

Managed to get brackets made and fitted to the reverse box, and it's now mounted, - seems to be solid enough, again time will tell.......

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And more to the point, when I popped the engine into its intended position it all seems to line up, so fingers crossed.

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Peter


40
Off Topic / Re: Anyone good at Math.....What do two Sevens make ?
« on: 27 Aug 22, 07:54 pm »
It's either a Lotin or an Austus :)

Peter

PS there may be a problem with inter-breeding, Colin Chapman did start out with an Austin 7.

41
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 27 Aug 22, 05:40 pm »
Back from holiday, I thought I would get an hour or so in and finally sort the steering, however you  rotten swines didn't tell me that there was a fundamental problem with the set-up I pictured a few weeks ago......

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Turning the wheel right makes the wheels turn left! - back to the drawing board - the Pittman arm needs to hang down, not a major problem, but it wasn't the start I wanted. :)

Peter

42
Build journals / Re: BSA 3 wheeler.
« on: 27 Aug 22, 05:18 pm »
Quote from: Chris L on 26 Aug 22, 08:07 pm
Think this pic may help you Peter , Ref sizing. Its a standard 2 bike trailer. (with a separate chassis. ie not reliant on skids for strength) .
I just bolted the "Skids" as far out as poss to suit our CK track.
Thanks Chris,  it seems to be the answer for me, fairly light, and doesn't take up too much room.

Peter

43
Build journals / Re: BSA 3 wheeler.
« on: 26 Aug 22, 04:12 pm »
Useful to see, I've been looking at bike trailers on Marketplace, but wasn't too sure about size etc. It looks to be a perfect solution, though I suspect all of the bike holders would have to be removed to get a 4 wheeler on. How long are the actual bike channels?

Peter

44
Build journals / Re: 1936 Austin 7 twin cam racer
« on: 17 Aug 22, 02:59 pm »
Thanks Peter, the scuttle got a bit closer to a finished shape before I hopped off to Gran Canaria for our holidays,

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looking forward to getting back and progressing the build, the Bèdèllia is looking good, can't wait to see it in action,

Peter

45
Tech Forum / Re: Rear axle
« on: 05 Aug 22, 08:53 am »
I'm using a 1020 with Honda wheels, it's giving me 37•5" track at full width. There is also the option to narrow it if I want to, a relatively quick adjustment that can be played with once I have a rolling chassis.

Peter

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