Author Topic: Sir Percivals 2Fifty Cal build thread  (Read 127918 times)

firefife

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #360 on: March 18, 2018, 10:12:01 PM »
That looks nice
Retired & living the dream

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #361 on: March 19, 2018, 07:02:32 AM »
What colour is your leather Perce? Looks the same as mine.
Jez

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #362 on: March 19, 2018, 08:09:22 AM »
Plastic attached to seat with tie-raps from plastic to fixed metal on the seat....perfectly rigid, as there are no stresses other than operating the switch, and easily removable and replaceable, no holes in seat required.

Only needed to trim a small bit at the back and trim off the retaining screw receptacle at the front.

When you say fixed metal, do you mean the subframe and DNA brackets or the other metal that was attached to the plastic trim? Did you remove the metal part from the plastic part or somehow re-use that?
Jez

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #363 on: March 19, 2018, 11:17:23 AM »
Leather is supposedly "biscuit" or beige really, or light tan...or "sand"

Tie wraps were slid under the DNA seat rails and then around various bits of the metal that are inside the plastic shell....I was going to drill and tap the seat frame, but it is not substantial enough....drilled one hole and then decided against it....it would weaken the internal frame in the seat too much.

You need long ties, but with about four, two straight across and two and angles to prevent fore and aft movement, it is remarkably solid.

You just have to make sure you attach the ties to the same metal that the DNA rails bolt to, because they go up down, back and forward with the seat, so as far as the attachment goes they are static.

On another subject, for anyone with an older M52 engine, you have to buy a T piece for the oil pressure and oil temp senders, as unlike yours Jez, there is only the one off-take....trouble is the temp sender bottoms out in the threads. I don't know if this is a problem or not for it's operation, but it is for sealing it. I have ordered a different T piece to see if it has deeper threads....if not I may have to fit a spacer or something.



Not found the water block drain yet....have to wait till I jack it up.
If Airfix plastic model planes are made exactly to scale, why don't they fly?

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #364 on: March 19, 2018, 02:50:32 PM »
Cheers Perce,
I'm glad I kept the metal parts since the DNA method of fixing meant discarding those. I have re-fitted them and am now investigating a method of fixing with them in place.
I too did not like the idea of drilling into the seat frame. It's tubular for a start, so would be very difficult to drill without the drill bit slipping on the curve....and I don't like drilling through leather and filling as it can snag in the drill bit.
Jez
Jez

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #365 on: March 19, 2018, 07:32:11 PM »
What colour is your leather Perce? Looks the same as mine.

I thought yours was cream?
If Airfix plastic model planes are made exactly to scale, why don't they fly?

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #366 on: March 19, 2018, 09:08:18 PM »
The official term is 'stone' but it looks exactly the same as your photos!!
Jez

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #367 on: March 31, 2018, 01:43:15 PM »
Fitted the oil temp and pressure sender after drilling and tapping a nylon block to stop the temp sender bottoming out.

If Airfix plastic model planes are made exactly to scale, why don't they fly?

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #368 on: April 14, 2018, 12:02:47 PM »
Oh and another note about the Tacho....on 6 cylinders you need both switches 2 and 3 in the on (up) position.....I finally read the instructions that come with it!!!

Jez - ref telephone conversation....it is 2&3 that I have switched to the up position
If Airfix plastic model planes are made exactly to scale, why don't they fly?

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #369 on: April 14, 2018, 09:04:27 PM »
Very odd, because on mine is 2 only, and that's also what Tony said he did with all the ones they built.
Having just switch 2 in the on position gives me a tick-over RPM of 750. Having 2 and 3 up gives me 400 RPM.

.?????
Jez

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #370 on: April 19, 2018, 08:23:52 PM »
Good day today. MOT passed with no advisories. did 140 miles to celebrate....didn't miss a beat.    ;D
If Airfix plastic model planes are made exactly to scale, why don't they fly?

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #371 on: April 19, 2018, 08:57:36 PM »
Yeah!!  :) :) :)
Jez

Sir Percival

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #372 on: April 21, 2018, 08:02:26 PM »
Here are a few pictures of the car on it's reliability run;

If Airfix plastic model planes are made exactly to scale, why don't they fly?

Jez

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #373 on: April 21, 2018, 11:31:12 PM »
Nice! So jealous!!

Looking great Perce - well done.
Jez

Furrari

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Re: Sir Percivals 2Fifty Cal build thread
« Reply #374 on: April 22, 2018, 08:20:26 AM »
The pics you and Jez post show what a great loss it is that DNA can no longe produce the 250.
Not all problems can be solved with gaffer tape.  For those there is WD40.
Not even gaffer tape can fix stupid, but it can mask the sound.

If you can’t buy it or steal it you have to make it.