The 50

**cotswold** · 11th March 2016, 04:24

Originally Posted by TZ350

Can you repair the fitting, glue it in place with 5min Araldite.

Well thanks to Roger who had a couple more fittings made up looks like I'll be doing a back to back at the track

**Buttman18** · 20th March 2016, 11:40

My Rg50 the night before the RNZAF 6 hour Mopedathon came 2nd in class behind an Aprilla 50cc

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**cotswold** · 30th March 2016, 12:18

A mate from the Netherlands has sent me a late xmas present, means I will have to get another insert made up but should be worth it as this was built for his lad as his spare cylinder, his best one makes 17BHP so will be interesting to see where this one is at.

On from the GP disaster I have just started delving into what went wrong, I did find that when I rebuilt the carb the pilot jet was a 55 when I thought it had a 40 as that's what I had ordered, so I have rectified that, the other thing that was not really thought out was I had added a Scitsu tacho and some one mentioned it may have been interfering with my ignition??
I just compared the exhaust port on the new cylinder to the one on mine which (due to honda making the wall too thin) is pretty much maxed out and the Dutch Aluminium after market cylinder has a much bigger port which I will be unable to copy without some engineering.

**FastFred** · 31st March 2016, 06:32

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Rag in the cylinder hiding the ports, very Rygerish....

**cotswold** · 31st March 2016, 08:38

Originally Posted by FastFred

Rag in the cylinder hiding the ports, very Rygerish....

Thats why the piston is still in the box too

**lodgernz** · 31st March 2016, 09:33

Originally Posted by cotswold

Coolants, do any of you boys use one and if so which one. I got sold a bottle of Motocool expert by Motul as being track safe but after a bit of reading I am now unsure.
Waterwetter is coming tomorrow which is track safe but it's not what I was originally after.

According to someone on the ESE forum, the only coolant additive approved for MotoGP is GLYCEROL at 2 - 5% (with water of course).
NOTE: This is ****NOT**** Ethylene Glycol or Propylene Glycol or any kind of Glycol.
You can buy Glycerol at any pharmacy.
It acts as a rust inhibitor and a wetting agent. I've been using it for a year and it seems to work fine.

**husaberg** · 31st March 2016, 21:23

Originally Posted by lodgernz

According to someone on the ESE forum, the only coolant additive approved for MotoGP is GLYCEROL at 2 - 5% (with water of course).
NOTE: This is ****NOT**** Ethylene Glycol or Propylene Glycol or any kind of Glycol.
You can buy Glycerol at any pharmacy.
It acts as a rust inhibitor and a wetting agent. I've been using it for a year and it seems to work fine.

I have never heard of that one, neat
But in MNZ rules

10.13.2 Ethylene Glycol is banned from use in road race radiators.

Thus I assert Propylene Glycol is in NZ at least legal in MNZ events.
Funny enough you should be able to get pure Propylene Glycol at a pharmacy or even cheaper still from a Vet. (Its used for Ketosis and sleepy sickness treatment)
So unlike Ethylene Glycol you can feed it to pets with out negative effects.
I am not sure if its slippery though. Which is why (I think) the Ethylene Glycol was originally banned.

**cotswold** · 1st April 2016, 08:43

................................

**richban** · 1st April 2016, 17:39

Originally Posted by cotswold

got the 50 running last night with the new insert head but something odd has happened to the rev range, still if I can find where the revs have gone it should go pretty well, thanks TZ and Fast fred for your help

Like scott said on ESE thread. Must be massive comp? What comp is it? Also maybe the squish velocity is to high. Totally guessing with that but could be.

**cotswold** · 6th April 2016, 17:08

Bought some Brisk plugs from Martijn at Emot as don't fancy having the NGK ones falling apart on me. These are the Brisk Silver race plugs and came well recommended, not too expensive at 12.50 euro's each

**mr bucketracer** · 11th April 2016, 21:05

Originally Posted by cotswold

Bought some Brisk plugs from Martijn at Emot as don't fancy having the NGK ones falling apart on me. These are the Brisk Silver race plugs and came well recommended, not too expensive at 12.50 euro's each

i see you biding on my rd50 (-;