Finned rocker oil feed

For all the fin haters out there 🤣🤣🤣🤣
 

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Chris

Post in thread 'Finned points cover'

Hi
I have 2 different designs
RGM type is very modern
Dunstal type matched the rocker box covers
Should think fairspares would have it in stock.
all the best Chris

Hobot

Post in thread 'Finned points cover'

There are two more finned covers available, one more crude
cast with less and thicker rounded profile fins
and a custom set by Sir Eddie in Orgeon selling them to finance
land speed super hi reving Norton 500 twin,
that make the finned one shown above seem like a lunch
break job that was never finished.

I've asked for photo's of Sir Eddies items or will photo
Ms Peels if interested. They are pricey compared but
then best delights are in the fine details.

hobot - too weak to deny Peel anything she wants, when
I can cover the costs.

Hobot

Post in thread 'Finned points cover'

OH yeah, I helped advise Sir Ed in his brain/spine deer strike
recovery - vetigo, passing out, choking to swallow, breath shortness,
so he traded me a really super duper one of a kind creation of his.

One piece R & L rocker spindle covers-
oil feed cooling design that matches his other machined covers.
Provided special SS dual vent banjo bolt fittings to run oil
gauge from.

Stored from insects, climate and pack rat teeth and urine in sealed
tins till ready to fly.

Peel's rocker spindles are drilled thru so cooling oil feeds in one
side and flows to the other, no external cross over...

 
Last edited:
74ok said:
Chris

Post in thread 'Finned points cover'

Hi
I have 2 different designs
RGM type is very modern
Dunstal type matched the rocker box covers
Should think fairspares would have it in stock.
all the best Chris

Hobot

Post in thread 'Finned points cover'

There are two more finned covers available, one more crude
cast with less and thicker rounded profile fins
and a custom set by Sir Eddie in Orgeon selling them to finance
land speed super hi reving Norton 500 twin,
that make the finned one shown above seem like a lunch
break job that was never finished.

I've asked for photo's of Sir Eddies items or will photo
Ms Peels if interested. They are pricey compared but
then best delights are in the fine details.

hobot - too weak to deny Peel anything she wants, when
I can cover the costs.

Hobot

Post in thread 'Finned points cover'

OH yeah, I helped advise Sir Ed in his brain/spine deer strike
recovery - vetigo, passing out, choking to swallow, breath shortness,
so he traded me a really super duper one of a kind creation of his.

One piece R & L rocker spindle covers-
oil feed cooling design that matches his other machined covers.
Provided special SS dual vent banjo bolt fittings to run oil
gauge from.

Stored from insects, climate and pack rat teeth and urine in sealed
tins till ready to fly.

Peel's rocker spindles are drilled thru so cooling oil feeds in one
side and flows to the other, no external cross over...

Click to expand...
I'm trying to find out about the finned oil feed only
 
P

Thread 'One piece finned rockers plates'

Hi.
I have two one piece finned rockers plates that come from Dunstall 810 big valves head.
These one pieces have only the four end plate screws and not the oilfeed banjo bolt in the center.
The oil from timing arrive to one hose (instead of the stock feed) and goes to the rockers not trough the stock head oil lines but trough the rocker spindles.
The question is if such one piece rockers plate works well or is better to come back to the stock one.
More, they need gasket or sealant to mount well?.
Thanks.
Pieto

 
74ok said:
P

Thread 'One piece finned rockers plates'

Hi.
I have two one piece finned rockers plates that come from Dunstall 810 big valves head.
These one pieces have only the four end plate screws and not the oilfeed banjo bolt in the center.
The oil from timing arrive to one hose (instead of the stock feed) and goes to the rockers not trough the stock head oil lines but trough the rocker spindles.
The question is if such one piece rockers plate works well or is better to come back to the stock one.
More, they need gasket or sealant to mount well?.
Thanks.
Pieto

Click to expand...
Mine similar to the madas ones in this link but as you can see the ones I have have to be used with the oval inner plates to stop the rocker spindles revolving
Getting closer 👍
 

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baz said:
It's the oil feed pipe only that I'm interested in👍👍
Click to expand...

Damn you guys are gluttons for punishment. Good luck with the oil feed to those spindle covers.

One of the P11 owners (junglebiker) installed something similar if not the same as those finned things on a nice 750 engine build. He might have some clues.
 
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someone above said they have on a 810 dunstall head

this dunstall parts pg19 shows a - finned rocker feed - but for a triumph

tons out there for triumph, seen some bsa
-----------------------------------

hobot above mentions - Sir Eddie in Orgeon selling them to finance
land speed super hi reving Norton 500 twin,

with above
One piece R & L rocker spindle covers-
oil feed cooling design that matches his other machined covers.
Provided special SS dual vent banjo bolt fittings to run oil
gauge from.
-------------------------

also
Dunstal type (finned cover) matched the rocker box covers
Chris

this too
I have two one piece finned rockers plates that come from Dunstall 810 big valves head.
These one pieces have only the four end plate screws and not the oilfeed banjo bolt in the center.
The oil from timing arrive to one hose (instead of the stock feed) and goes to the rockers not trough the stock head oil lines but trough the rocker spindles.

havent seen any pix of the norton dustall type, or from 'Sir Eddie'
 
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" I hope the oil doesn’t get cooled so much it freezes in that thing ! "

With all that cooling you could use the fins to duct the air into the carb intakes like on a " ram air " system, the cooled air would make more power thus allowing the engine to make more heat thus preventing oil freezing ---- the only downside is you'd need to ride it like you stole it.

:cool:
 
Fast Eddie said:
Very 60s, Ace Cafe, mod basher mate !

What is it 500,600,650? And what yer gonna do with it ?
Click to expand...
It's 67 atlas 750 engine it was in a really hot cafe racer built by Jeff Hoult (ex AMC) but the new owner wanted a Triton
So this engine was pulled out
I'm planning to put it in the commando chop I bought last because I want to use the 920 engine in my commando
The chop has no ISOs and I think the atlas would be better suited to it
I'll remake the engine plates to run the entire upright
Well that's the plan
Of course if a featherbed rolling chassis should turn up a reasonable money it could all change 🤣🤣🤣🤣🤣🤣🤣
 
baz said:
It's 67 atlas 750 engine it was in a really hot cafe racer built by Jeff Hoult (ex AMC) but the new owner wanted a Triton
So this engine was pulled out
I'm planning to put it in the commando chop I bought last because I want to use the 920 engine in my commando
The chop has no ISOs and I think the atlas would be better suited to it
I'll remake the engine plates to run the entire upright
Well that's the plan
Of course if a featherbed rolling chassis should turn up a reasonable money it could all change 🤣🤣🤣🤣🤣🤣🤣
Click to expand...
Depending on the spec of both motors you might be better off leaving the 920 motor in the chop and fitting the 750 in the Commando …
 
dunno any details on the finned rocker oil feed cover here

hobot sez
(My Ms Peel mock up with the identical mate to Bruce's who got his from hobot.)
Finned rocker oil feed

Hobot

Post in thread 'Supercharged 750 sold in the US - who was it!'

Here's some background. There's a fully tested upgraded later model adj belt Drouin available now from Bruce McGregor on this forum - its the one shown kick starting in video. Tom Drouin in cohoots financially with TC Christensen brought forth about 5 versions most mean for all the popular American, British and Japan 750+cc of the era. They got a bad reputation for holding belts on, burning bearings and killing pilots with Lake Injector slide sucked tight to stick way open boosting them to their end.

https://www.google.com/search?q=drouin+ ... 83&bih=391...
 
Fast Eddie said:
Depending on the spec of both motors you might be better off leaving the 920 motor in the chop and fitting the 750 in the Commando …
Click to expand...
There's nowt wrong with the 750 engine in my commando
I just fancy trying the 920
Plus I can run the atlas motor on a k2f mag
 
74ok said:
dunno any details on the finned rocker oil feed cover here

hobot sez
(My Ms Peel mock up with the identical mate to Bruce's who got his from hobot.)
Finned rocker oil feed

Hobot

Post in thread 'Supercharged 750 sold in the US - who was it!'

Here's some background. There's a fully tested upgraded later model adj belt Drouin available now from Bruce McGregor on this forum - its the one shown kick starting in video. Tom Drouin in cohoots financially with TC Christensen brought forth about 5 versions most mean for all the popular American, British and Japan 750+cc of the era. They got a bad reputation for holding belts on, burning bearings and killing pilots with Lake Injector slide sucked tight to stick way open boosting them to their end.

https://www.google.com/search?q=drouin+ ... 83&bih=391...
Click to expand...
That oil feed looks similar to mine
Shame that hobot never got that bike finished
 
Oil feed to the spindles is on top of an Atlas head so you could eliminate the brass tubes entirely. Oil would still go into the finned cover although it might not be doing a lot.
 
baz said:
That oil feed looks similar to mine
Shame that hobot never got that bike finished
Click to expand...
i read all his stuff was given away so prob at some point end up back in circulation & even here,

i know he talked about a tti tranny, but not sure (or remember) if he had 1

anyone know about that alum swingarm? year, make model?
 
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