Rear wheel and chain oil containment

[powerhouse]

As John Chandler asked about the f600 regs
Can someone put up a picture of there rear wheel oil containment with poss chain Curtain
Pretty please

[little chud]

as no one has given us a definitive answer Brian, I am going with my interpretation of the rules.

this is what I am going for. Bare in mind it is a work in progress and needs the edges cleaning up and some beading round the edge to make it seal inside the seat.

the rule book says on page 300

The rear wheel must be protected from any possible oil spray. To make this protection, the engine
and rear wheel compartment must be separated. This separation must be created by installing a solid
divider (wall) running from the top of the inside of the bodywork to the bottom of the oil tray and to
the full width of the rear tyre. This divider (wall) must overlap the rear edge of the oil tray down to
the bottom.

pic 564 is to show the width in relation to the rear tyre it is "the full width of the rear tyre".

Pic 567 is to show "the wall will overlap the rear edge of the oil tray down to the bottom". as can be seen, the wall actually is longer then the bottom of the frame spars and needs trimming to the correct length. the gap which ive cut to fit it over the engine plate will also be filled.

I don't understand the rubber flap issue and don't know where it has come from but as far as I can see the rule book makes no mention of it.

This is a serious issue and needs a definitive answer if we can get one.

jc

[Big Tim]

RE: "Rubber Curtain / Flaps For Chain" - From this years T.T. regs (I don't have the ACU handbook here, but maybe someone can check that too, please ?)

8 Oil and Coolant Containment
• In the area directly below the engine, the oil containment tray must be constructed to hold, in case of an engine break down, at least half of the
total oil and engine coolant capacity used in the engine (minimum 5 litres).
• The surrounding edges of the tray must be at least 50mm above the bottom of the tray, measured vertically from the tray Oil containment
material must be fixed to this tray and the sides.
• The frontal edge of the oil tray wall must be extended upwards to arrive just below (within 20mm) of the exhaust ports of the engine. The rear
face of the tray should be to the height of the swinging arm and the minimum width should be equal to the width of the rear tyre.
• The gear lever must exit via a rubber boot or two rubber curtains.
• The chain slot must have a rubber curtain fitted.
• Holes for the engine mounts (hangers) must be sealed.
• From a vertical view, the engine must be located completely inside the oil tray platform.
• The rear wheel must be protected from any possible oil spray. To make this protection, the engine and rear wheel compartment must be
separated. This separation must be created by installing a solid divider (wall) running from the top of the inside of the bodywork to the bottom of the oil tray. This divider (wall) must overlap the rear edge of the oil tray down to the bottom.
• All machines must use this tray.
• All sidecars shall attach oil absorbent materials of no less a quality than 3M Product number T156 or CEP Sorbents product number CEP-EP100.
• This material shall be securely fixed to the following areas of the sidecar.
• The entire oil-tray, both the bottom and the inside walls of the same. The volume of material used in this area, according to the manufacturers specifications, shall absorb not less than 3 litres of oil.
• Any bodywork directly covering the engine.
• In the event that oil is absorbed by the material, it must be replaced before the next track session.
• The material must be attached in such a way that it should be easily replaced, yet must not become dislodged whilst on the track, and its
effectiveness is not inhibited, i.e. if an adhesive is used it must not clog the material, causing it to lose its absorbent properties.
• All absorbent material shall be non-flammable by design.
• Oil-lines containing positive pressure, if replaced, must be of metal reinforced construction with swaged or threaded connectors.
• Oil coolers must not be mounted on or above the bodywork of the sidecar.
• The location of the oil tank and the oil cooler should be placed in a location where it is least likely to be damaged on an accident.
• Ignition pick-up covers must be lock wired

[paul33]

page 299 from the 2012 ACU handbook.
I think it would be helpful if we post our different interpretations of this, photos will be good


18.8 OIL AND COOLANT CONTAINMENT
In the area directly below the engine, the oil containment tray must be constructed to hold, in case
of an engine break down, at least half of the total oil and engine coolant capacity used in the engine
(minimum 5 litres).
the surrounding edges of the tray must be at least 30mm above the bottom of the tray. 50mm high
measured vertically from the bottom of the tray
the frontal edge of the oil tray wall must be extended upwards to arrive just below (within 20mm) of
the exhaust ports of the engine.
Holes for the engine mounts (hangers) must be sealed.
From a vertical view, the engine must be located completely inside the oil tray platform.
the rear wheel must be protected from any possible oil spray. To make this protection, the engine
and rear wheel compartment must be separated. h is separation must be created by installing a solid
divider (wall) running from the top of the inside of the bodywork to the bottom of the oil tray and to
the full width of the rear tyre. h is divider (wall) must overlap the rear edge of the oil tray down to
the bottom.
All machines must use this tray.
All sidecars shall attach oil absorbent materials of no less a quality than 3M Product number T156 or
CEP Sorbents product number CEP-EP100.
the is material shall be securely i xed to the following areas of the sidecar.
the entire oil-tray, both the bottom and the inside walls of the same. h e volume of material used in
this area, according to the manufacturers specii cations, shall absorb not less than 3 litres of oil.
Any bodywork directly covering the engine.
In the event that oil is absorbed by the material, it must be replaced before the next track session.
h e material must be attached in such a way that it should be easily replaced, yet must not become
dislodged whilst on the track, and its ef ectiveness is not inhibited, i.e. if an adhesive is used it must
not clog the material, causing it to lose its absorbent properties.
All absorbent material shall be non-l ammable by design.
Oil-lines containing positive pressure, if replaced, must be of metal reinforced construction with
swaged or threaded connectors.
Oil coolers must not be mounted on or above the bodywork of the sidecar.
the location of the oil tank and the oil cooler should be placed in a location where it is least likely to
be damaged on an accident.
Sump plug, oil i lters, Ignition pickup covers and Clutch centre covers should all be lockwired or
lockplated.
the gear lever should exit via a rubber boot or l exible seals if the gear lever exits outside the retaining
area.
the chain slot must have a flexible seal fitted.

[little chud]

now Im really confused.

I didn't read past the part that says the width of the rear tyre. Sorry to anyone if this has caused confusion.

However, based on the above, why does the chain need to go through a slot when the wall has to be the width of the tyre? and is it just me thinking a rubber flap will be dangerous as it will be torn to shreds and it will also wipe lube off the chain?????????????

am i missing something here?

Can I ask that someone technical on the FSRA commitee clarify the situation with the ACU and advise us all one way or the other.

jc

[Jo Warriner]

John, we are working on this, certainly for the TT. We have a meeting next week.

Anyone who has any issues, please contact me and I'll tell you who to contact.

If anyone can supply photos to me of what they have done or better still, where you think you can't conform to the regulations, I'd be very grateful. Don't forget to include what make of chassis you're using. My email is jrw@manx.net.

Thanks!

Jo

[Bill Lymburn]

now Im really confused.

I didn't read past the part that says the width of the rear tyre. Sorry to anyone if this has caused confusion.

However, based on the above, why does the chain need to go through a slot when the wall has to be the width of the tyre? and is it just me thinking a rubber flap will be dangerous as it will be torn to shreds and it will also wipe lube off the chain?????????????

am i missing something here?

Can I ask that someone technical on the FSRA commitee clarify the situation with the ACU and advise us all one way or the other.

jc

John, I'm not involved in this in any way, but as an engineer I'll make my point. Like you I see your cover as being adequate to cover the first part of the ruling...however, like you I don't understand where the chain seal comes from when you have adequately covered the tyre... but if it becomes a neccessity then your guard,, adequate for the earlier purpose is no way going to be strong enough to hold a wiper seal of any kind. I think what is proposed is downright dangerous and they are going to be strewen all round our tracks or worse causing transmission lock ups....I don't know the torque of a F2 but let's just say up to 140bhp is pulling on that chain and as Eddie Wright previously said what material is going to last to Quarterbridge...if it twists and jams it'll cause all hell....the construction to hold a wiper seal in place is going to have to be well engineered, expensive and intrusive where there is not a lot of space already...surely what you have shown can be done cheaply and inobtrusively should be adequate...

Bill L.

[gatekeeper]

what a load of utter botox i hope the same applies to solos as they have chains too

[powerhouse]

The ACU/FSRA are killing us.and the sport. Chain wipers, do me a favour!!!Hope they hold there hands up when it all goes wrong. God forbid
One month to go and were all none the wiser
I'm proper naffed off with them.

[Bill Lymburn]

Just had another thought, wiper seals are directional so you won't be able to pull the bike backwards...!!!

[kew]

I'd better make mine bi directional 'cos I'm getting good at going backwards.

[dick tapken]

now now lad's don't get confused you know the expert's at the acu are working flat out too make our racing more enjoyable (ha ha) oh and i forgot safer!!

[powerhouse]

I'm not being insulting but when the Acu make a rule who are there advisors? Are there a select few of current and past racers ready to spring into action as and when, or are there just a bunch of political types making decisions what look good on paper but in the real world are not really thought through.
I really don't know as I said.

[Lisa]

I think some one at the ACU or who ever thought up the idea should send us photos of an example and a video of it working on the dyno.
I am a scrutineer and have no idea how to implement this rule safely.

[anp]

You could get a classic BMW thats a shaft drive that would be easier to seal or perhaps maybe an old MZ enclosed chain tin