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Re: Getting CycleKarts back on track. by jim
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Author Topic: Morgan F build  (Read 12975 times)

TheGiantTribble

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Re: Morgan F build
« Reply #30 on: 10 May 2019, 09:27:11 am »
Glad to hear you are improving the 'tuck under' situation, it was scary enough just watching from a safe distance. And to be fair my photo didn't capture it at it's worst!

Chris Brown

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Re: Morgan F build
« Reply #31 on: 10 May 2019, 04:27:53 pm »
It didn't feel too bad in the kart, as by then I had the measure of it, not like the first corner on the second lap!

Chris Brown

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Re: Morgan F build
« Reply #32 on: 11 May 2019, 04:10:59 pm »
Prompted by questions on the other forum, and out of curiosity I've weighed the Morgan: 34 Kg front (75 lb), 66 Kg rear (145 lb) total 100 Kg (220 lb), which is exactly what I was hoping for.

Chris Brown

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Re: Morgan F build
« Reply #33 on: 19 June 2019, 08:22:40 am »
Things are on hold at the moment, too many other things taking priority, like work, camper, garden. I'll be back to it later in the month, once Llangollen International Eisteddfod is out of the way.

Still doing research for future cyclekarts though!

Chris Brown

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Re: Morgan F build
« Reply #34 on: 19 June 2019, 07:29:10 pm »
Having said it's on hold, I did pick up a baby bath yesterday, which I thought would provide me with a mould for the Morgan and A7 radiator surround. I think it'll work for the A7, not for the Morgan though. At the builders merchants collecting some timber today, I spotted some bits of celotex, asked, and the answer was yes you can have them. So I've got plenty of polyurethane foam to make the plug for the Morgan radiator surround, free! Polyurethane foam is not attacked by polyester resin, so no barrier needed, so I think that's a result, just need some PU adhesive to stick it together.

PS. One thing I'd be wary of doing with polyurethane foam is using a hot wire, I know cyanide is involved in the cure, so I'd be doubtful about heating it.
« Last Edit: 19 June 2019, 07:34:10 pm by Chris Brown »

RhysN

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Re: Morgan F build
« Reply #35 on: 19 June 2019, 09:16:15 pm »
I have used PVA and hot glue to stick PU foam together, just kept away from the edge where the cut was to avoid the hard spots. I cut with a hand saw and use blocks of offcuts as sanding material.

Chris Brown

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Re: Morgan F build
« Reply #36 on: 20 June 2019, 08:51:10 am »
Thanks for the info Rhys, I'll use the bandsaw for cutting, I'll follow your tip for sanding though. Looking at polyurethane glue on ebay, I came across some glue sticks that claim to be polyurethane, so I'll try those. For the cost of it though I'm still inclined to get a small bottle of the Gorilla Glue for the job.

RhysN

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Re: Morgan F build
« Reply #37 on: 20 June 2019, 02:20:35 pm »
For gluing the foam together anything that doesn't attack the foam will do. I used the hot glue because it's so quick that you barely hesitate making the shape. Long  bits of dowel and kebab sticks make good nails for the job :)

Chris Brown

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Re: Morgan F build
« Reply #38 on: 17 July 2019, 05:39:35 pm »
Got a couple of bits done, changed the rear tyre from a 120, to a 3.00, and changed the brake shoes while I was at it.

To do that means removing the exhaust silencer and outboard bearing carrier, no hardship as I'm going to change the exhaust anyway.

The reason for changing the exhaust isn't performance, but to reduce the bulk, it will improve performance, if only because the original silencer is 3.75 Kg (!!!), and the replacement is 500 g.

Oh yes, and I was mistaken about the tyre make, it's a Vee Rubber, not a Metzler.
« Last Edit: 30 August 2019, 06:04:47 pm by Chris Brown »

Chris Brown

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Re: Morgan F build
« Reply #39 on: 24 July 2019, 04:17:33 pm »
So, got the exhaust more or less sorted, quite pleased with the way it tucks in, it'll be completely hidden under the body, and it saves 3.25 Kg. Just need to sort out a tailpipe to bring the exhaust gasses out clear of the body, don't want to suffocate the engine.

Chris

Chris Brown

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Re: Morgan F build
« Reply #40 on: 14 August 2019, 04:01:23 pm »
I know I've been quiet recently, a week of sciatica, and getting stock sorted for The Model Boat convention hasn't helped. Just run the engine up with the new silencer on, and I'm getting a peak reading on the phone sound meter of about 80Db at roughly 1m. Quite happy with that, means I can run at Stretton even if the baffle doesn't arrive as their limit is 98, sounds good too!

https://www.facebook.com/100006663424187/videos/2472446986320725/?notif_id=1565794642187185&notif_t=video_processed

Chris Brown

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Re: Morgan F build
« Reply #41 on: 30 August 2019, 07:42:02 pm »
I took the Morgan for a pre-Stretton spin around the paddock this afternoon, and it looks promising.

Obviously I couldn't get enough speed up to really judge the mods:

1/ The 30mm springs are much better than the 40mm ones.

2/ The steering is much lighter having sorted out the bearings, but that means it's twitchier too. Maybe I need to make the top bearing adjustable to act as a damper?

3/ The pedal position is much improved, a bit more work is probably needed, but the driving position is far better.

Once I've had a run in it I'll be able to judge if it's good enough for me to have sufficient confidence in it to let some of the others have a go, though only those of shorter stature (limited legroom)!

Stefan previously asked me to bring along some examples of my work, I've actually remembered this time. So I've got some model boat stuff, some jewellery, and a couple of taster bottles of wine (not strictly work, and very small).

Marek.Z.N

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Re: Morgan F build
« Reply #42 on: 30 August 2019, 10:49:46 pm »
Sounds like you have made some good adjustments for a smoother, more comfortable drive. I'm excited to see it at Stretton.

Chris Brown

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Re: Morgan F build
« Reply #43 on: 31 August 2019, 09:31:18 am »
Yes I'm quite pleased with the way it's gone, Graham, and Geoff (if he'll fit), are on the list of victims, sorry I meant candidates to drive it, as they kindly allowed me my first cyclekart drives. After that it's a free for all (those that'll fit), though I'd quite like Rhys's opinion. It's probably best done down on the oval as there's more time available than on the circuit, and we can swap drivers.

Chris Brown

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Re: Morgan F build
« Reply #44 on: 03 October 2019, 09:21:54 am »
Just posted some in kart video from the last Stretton meeting, belatedly, thanks Stefan for reminding me. It's here: https://www.facebook.com/100006663424187/videos/2509924895906267/?notif_id=1570090534233266&notif_t=video_processed.