I tried Allen's they said they haven't got exact data but would get 'near' using twin experience of larger carbs, who did you ask?
E: Engine Comet for the 2020's
- Thread starter vibrac
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Steve, at Motocarb (U.K.) has all the jets and settings at hand. Supplied a 34mm for the Comet on Steroids,with an air cleaner. I mentioned Supertrapp silencer on 1 3/4" pipe, terminating 2". 650cc., Terry Prince head. The thing has been perfect for 3 years. He also supplied extra jets.
Thanks Chankey I got in touch with Motocarb and now have a jetted 32mm carb and Timetraveler is sourcing an adapter.
No matter how long you play with these machines there is always something new I have just been sorting my RFM for inclusion on my 2020. Assuming its in the standard position and looking from the rear on the RH lower tube on the inside face about level with the click adjusters are two 3/16" holes about 1 inch apart and on the LH side in the same position is one 3/16" hole. all go through that side of the tube, obviously they have been there since before stoveing that was done at some point in the past (maybe its even factory paint). I have never seen them before they worry me, the RFM is no Brampton fork but it can rust from the inside, I have applied some oil can squirts so I can see where the oil goes (I have yet to sort the bearings out) but are these hole just this RFM or are other RFM's so affected? I shall plug them with some grub screws whada you think?
No matter how long you play with these machines there is always something new I have just been sorting my RFM for inclusion on my 2020. Assuming its in the standard position and looking from the rear on the RH lower tube on the inside face about level with the click adjusters are two 3/16" holes about 1 inch apart and on the LH side in the same position is one 3/16" hole. all go through that side of the tube, obviously they have been there since before stoveing that was done at some point in the past (maybe its even factory paint). I have never seen them before they worry me, the RFM is no Brampton fork but it can rust from the inside, I have applied some oil can squirts so I can see where the oil goes (I have yet to sort the bearings out) but are these hole just this RFM or are other RFM's so affected? I shall plug them with some grub screws whada you think?
I have to ask, Why 2020, A man of you expertise, And connections must be able to get it done next year ?. Cheers Bill.
Its not finished by 2020 Bill its for use in the conditions of 2020 (speed enforcement, the ability to jump the DVLA hurdles that 'they' may erect,,old age afflictions, starting and machine reliability) now, what about those damm RFM holes? (incidentally the oil does come out of the bearings so they are not blind)
Sorry, I just hope I can ride next year.
The Comet Ron and me built in 2015, Had a big lump where the rear stand is fitted and the Pivot block had a big bit took out of it, On the underside.
As always, Photos help. Cheers and Good Luck, Bill.
As Bill said, a photo helps. But trying to be positive could they just be holes to let air out during a welding or brazing operation, during which the air can get so hot it will generate pressure. When you say it comes out of the bearing holes, does this mean that the tubes are continuously open right through to open air via the front lower casting? If so then compressed air would come through and there would not have been a need for bleed holes.
On my Comet RFM I blocked all the holes I could find to send it away for blasting. When I got it back there was blasting media in the pivot tube casting, i did not think to block the brake cable abutment but that is hollow right into the casting and the horizontal tubes are open into the casting as well..John
I have similar small air holes on the inside of the tubes on my Brampton forks. I found this worrying for rust reasons too, so I sprayed some thin oil into the holes. I have not blocked them off since since I don't know that they may do as much good in ventilating the tubes as harm by admitting moisture, but after nearly 70 years who knows what is going on in there without xrays or ultrasound. Kind of like me.