Star

Post by **minetymenace** » Mon Jul 29, 2019 7:36 pm

Beat, if you place the rings so that the patterned faces are against each other, surely they will turn and fall into each other and the stacked height will be reduced. I have little idea how the should be stacked, but not how you have them!! I would guess that the patterned face should be down on both....

beat · Post by **beat** » Sat Aug 03, 2019 8:57 pm

hi minety

minetymenace wrote: ↑Mon Jul 29, 2019 7:36 pm if you place the rings so that the patterned faces are against each other, surely they will turn and fall into each other

well, the patterned faces are not the same on both rings, just the " lower " ring has some pouches cut in this face.
the uper ring is just flat at the lower face with a pre-ground chamfer.
so they can not fall into each other.

minetymenace wrote: ↑Mon Jul 29, 2019 7:36 pm I would guess that the patterned face should be down on both....

this is my guessing two, - but should I not have full faced ringsides facing against the piston material ??

beat

Post by **minetymenace** » Sun Aug 04, 2019 10:35 pm

beat · Post by **beat** » Tue Aug 13, 2019 8:25 pm

Well, in a cupple of weeks the racing season 2019 is over.

it looks as I will overhaul the Goldie engine.
by this occasion, we would like to give it a bit more punch.

the Target could be: 636 ccm by Bore 90, Stroke 100 mm.

there is this Norfolk guy Phil Pearson, he offers something the like.

dos anyone of you knowing him ?

are there others going with Goldies in this direction ? ( except the dutch ABSAF place ?? )

beat

Post by **minetymenace** » Tue Aug 13, 2019 10:57 pm

Phil Pearson has an impressive web site, anyone in Norfolk fancy paying him a visit and reporting back?

Ian Hingley · Post by **Ian Hingley** » Wed Aug 14, 2019 5:06 pm

Hey beat

Phil Pearson is a renowned guru for Goldies.

He does an electric start too, which seems very popular with the 'mature' riders we all are now! No good for your racing needs of course. You could perhaps persuade him to do B50s commercially based on your design!

Cheers

Ian

beat · Post by **beat** » Wed Aug 14, 2019 8:34 pm

thanks guys so far.
if Phil is the only one, I will go this route.

just tried to start the Goldie this afternoon, - NO success

a electric starter would not help aider because the kill switch failed !!
and there is a race this weekend, so it must run

so, in state of working on the bathroom renewing, I try to repair the switch

my Hannelore is not very pleased.....

beat

Post by **minetymenace** » Thu Aug 15, 2019 9:46 am

Suggested position of new kill switch stolen from bathroom site:

beat · Post by **beat** » Thu Aug 15, 2019 8:29 pm

what that pimmel is for

: there was once a shower and a bath....

no, there is just work waiting for me....

beat

Post by **minetymenace** » Fri Aug 16, 2019 8:14 am

had to google "pimmel"! It is what we use in the UK as a bathroom light switch, has to be on a sting for safety in a damp environment, I just pictured you using it as a kill switch on your beesa beat.

beat · Post by **beat** » Tue Aug 20, 2019 9:22 pm

hi minety

minetymenace wrote: ↑Fri Aug 16, 2019 8:14 am had to google "pimmel"! It is what we use in the UK as a bathroom light switch

that sounds a bit strange to me

anyway, - the kill switch was working but one of the batteries got empty in heat 4 and we failed one last Lap.

beat

beat · Post by **beat** » Fri Oct 18, 2019 8:50 pm

hi gents,

soon I have to repair the finns on the Goldie head.

any good tips out there, - ( wasn't Stan posting something the like here once ?? I can't find it.)

beat

SteveS · Post by **SteveS** » Sat Oct 19, 2019 7:36 am

Hi Beat

I remember Stan commenting about fins but unable to trace the thread.

I know Mark can 'grow' new fins, maybe worth making contact to see how he does it:

viewtopic.php?f=3&t=2749&p=20371&hilit=fin+grow#p20371

beat · Post by **beat** » Sat Oct 19, 2019 7:38 pm

Yes SteveS, " growing " is the way to go.
I just ask myself if they do the growing in the " free air " ore they do the growing on top of a forming plate ( made from brass or steel ) underneath the growing fin....

beat

SteveS · Post by **SteveS** » Sun Oct 20, 2019 7:28 am

Hi Beat

From what I have seen from other welders work it would be grown in 'free air'.

I guess it's a long and laborious task involving welding then filing and shaping, then welding, filing and shaping again, then keep repeating until full growth.

I think we need more advice from people who have actually carried out the work

Any one?

Mark Cook · Post by **Mark Cook** » Mon Nov 11, 2019 7:18 pm

Sorry I haven't dropped in for a while Beat, seriously impressed it is for off road. I thought it was for road use. I have been reliably told M21 crankcases are stronger. If there is anything I can help you with you have my email.

Mark

beat · Post by **beat** » Tue Nov 12, 2019 9:00 pm

Thank you mark, - yes, it is for classic MX sidecar races.
soon I will update the story, overlooking this last year as our first season.

greetings

beat.....

beat · Post by **beat** » Sun Nov 17, 2019 9:45 pm

hi friends

Started abouth one year ago like this

enjoyed working within 27 weeks to get it like this

and finely like this

it comes to that picture this weekend:

Second in the OMC Championship for the season 2019.

OMC = Oldtimer Motocross Club Switzerland

some stages in between:

Barry Creary · Post by **Barry Creary** » Sun Nov 17, 2019 9:54 pm

Well done Beat congratulations you are very talented and your son to I hope he is enjoying his time with his dad

beat · Post by **beat** » Sun Nov 17, 2019 9:57 pm

Well, - as after the season is before the season,

some " minor " works needed on the thing...

new front fork swing arm for better shocks and more way in the suspension....

beat · Post by **beat** » Sun Nov 17, 2019 10:15 pm

thank you Barry, - and yes, surprisingly the all family enjoyed to work at this project

as next, the engine will get some modifications as well, - I will date up when progress is to see...

beat

Ian Hingley · Post by **Ian Hingley** » Mon Nov 18, 2019 11:23 pm

You never fail to impress beat!

Keep it up.

Ian

beat · Post by **beat** » Wed Nov 20, 2019 9:46 pm

Well, - the front fork is done,

the gearbox is overhauled and the head is welded:

now, the engine is getting a new piston ( 90 mm ) and a new Nicasil coated barrel and a new crankshaft with 102mm stroke.
will make 650 ccm in state of the 500 ccm it had....

I am wonder what the old

is able to do with this mod

beat

Post by **minetymenace** » Thu Nov 21, 2019 1:46 pm

500 to 650 doesn't sound much, but it is a 30% increase. Are you doing anything to the head/carb? What about the transmission, will it be able to handle all that additional power?

beat · Post by **beat** » Thu Nov 21, 2019 8:51 pm

minetymenace wrote: ↑Thu Nov 21, 2019 1:46 pm 500 to 650 doesn't sound much, but it is a 30% increase. Are you doing anything to the head/carb? What about the transmission, will it be able to handle all that additional power?

well, now, with this more than 50 years old piston it should bring 40 ore 42 HP, - this in best condition.
as it is consuming around 0.5 Liter of oil during a race day, - it is surely NOT in best condition, so we have to renew the engine.
with 30% additional ccm, longer stroke, renewing valves and head, it should bring something over 50 HP.
but I don't know save numbers of the output anyway......

the transmition is from a Norton Atlas ore Commando, I guess this engines are around 50 HP's, so it could hold in place I hope.

not sure about the belt drive. it is a 34 / 45 gearing now, and I will reduce it to 30 / 45 next.
I hope, it will not slip on the smaller gear, - if so, - I have to go back to the 34 sprocket, which is to long now for the use.

so you see, all is a bit " over the thump " calculation, - but I give it a try .

what is worry me a bit are the engine casings, as mark cook says.
I have welded them once already, - not sure they will hold long......

beat

skippy · Post by **skippy** » Thu Nov 21, 2019 10:25 pm

Will it change the starting technique with the extra compression resistance created by the increase of capacity?

Jack Gifford · Post by **Jack Gifford** » Fri Nov 22, 2019 6:43 am

I can already visualize Beat concocting motorized starting rollers...

Post by **minetymenace** » Fri Nov 22, 2019 9:42 am

reinforce the cases as a prophylactic...

beat · Post by **beat** » Fri Nov 22, 2019 9:00 pm

hi skip,

you mean the starting the engine ? yes ?---- ( not starting the all Race ? )

until now, with this 50 years ( and more ) old piston , it was not evan necessary to use the valve lifter to kick it over.
Kompression was so low.....

next, the comp Ratio will be around 9 : 1 and with the heavy Boots for MX and the mod. Timing advancer which ensures NO kickback, I guess it will be doable.....

the knobby and dirty tires makes it impossible to use a starting Rollers device I guess.

minetymenace wrote: ↑Fri Nov 22, 2019 9:42 am reinforce the cases as a prophylactic..

the idea is good, but :
I do not have any knowledge about HOW the cases usually brakes, - any pictures around ???

beat

Jack Gifford · Post by **Jack Gifford** » Sat Nov 23, 2019 7:21 am

If the starting rollers had some texture, rather than being smooth...???

beat · Post by **beat** » Sat Nov 23, 2019 8:20 pm

Jack Gifford wrote: ↑Sat Nov 23, 2019 7:21 am If the starting rollers had some texture, rather than being smooth...???

maybe, yes, - it could do it. - but : where is the starting roller device if the engine is stalling somewhere out in the mud ??

I must and I ( myself or Monky Lo ) will be able to set it in motion by kickstarting I think.
beat