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Thread: BMW kneeler

  1. #21
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    I had a visit from Dove on here ( my ex sidecar passenger) to give me a hand taking up slack on the jibs of the mill ( I watched) so we decided to give the mill a test run and machine the cylinder heads to straighten out the inlet track and make stubs to suit the Dellorto carbs. Don't fret the carb is 180 deg out!

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    Last edited by sam; 02.12.2018 at 02:48 PM.
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  2. #22
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    I headed down to Darlington yesterday to pick my outfit up from the fibreglass works, here is one reason why not to use a propane heater in your workshop, the chassis is covered in rust. Just as well he did a good job altering the seat and arch.
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  3. #23
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    You should have given it a coat of primer first I wouldn't think that propane heaters and fibreglass resin fumes would be a good mixture either - a potential to go BOOM

    Old enough to know better, young enough not to care

  4. #24
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    The chassis shall be blasted and powder coated after a complete dry build so hopefully all the rust maggets shall be removed. No time spent on the bike over the holidays due to being in Ireland at the outlaws, I managed a couple of hours this afternoon though. Inlet track machined and new stub to take a Dellorto carb welded in place, having to use a short bell mouth as the right hand cylinder sits further to the rear.
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    Last edited by sam; 31.01.2019 at 07:08 AM.
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  5. #25
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    Still on the dry build before paint, i put together a dummy motor over the weekend and mounted the exhaust that came with the bike but it looks as if it will be a little hot under the kneeler.
    On measuring the header lengths they are not in the same post code so have ordered a 180 deg bend and I shall make up a nice stainless 2 into 1 system which will give more room under the seat.
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  6. #26
    Join Date
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    I had a couple of hours free this afternoon so started on the leading link, I have made the from calipers floating and need to get this sorted before mounting the shocks.
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  7. #27
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    Your pictures are a' sideways Sam, they're gein' me a sair neck. An that left hand disc is affa roosty.
    Good progress though

    Old enough to know better, young enough not to care

  8. #28
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    Pics were taken in portrait, when I transfer they go skew whiff ! Why no have a wee dram it may ease yer neck off. Time is running away fast, trying to get ready and tested for the anual Moidart run on May 2nd.
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  9. #29
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    A little bit more progress on the front end, I have made the trail adjustable by slotting the pivot point and welding blocks either side.
    I have made plates to fit inbetween the blocks with holes at different spacing enabling me to draw the pivot point further in giving more trail .
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  11. #30
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    Front end nearing completion with adjustable ride height. I looked at getting a piece of AS 516 plate to machine up a disc but this was prooving to be too much of a pain and was priced 120 for a laser cut blank. I managed to find a couple of Citreon discs new delivered to the door for 12. A half hour on the lathe to bore out the centre then take down the dia, lastly onto the mill to bore the mounting holes, hey presto a nice new spanking disc at 6 each.
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  13. #31
    Join Date
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    I have been speaking to a few folk about the oil delivery and found that the early engines were prone to cavitation. To make the best out of the oil supply issues so I can rev to 8k plus the scavange has been opened out to 12.5mm the main oil feed from the cam shaft bush housing to the back of the main bearing housing was also opened out to 8mm .
    The oil pump rotors were slimmed down by 4mm to reduce the flow rate a new pump end plate was machined (cheers Dove) with a 4mm spigot on the rear to take up what was removed this all helps increasing the pumping efficiency and flow rate.Sump baffle made also as this is in a sidecar and not a solo.
    I Had top make a spring compressor as well, I have to fit restrictors to reduce the damper stroke and being 30mm long there was no way I ould have forced the spring down that far to get the buggers in. Kinlochleven wont happen for me this year work has got in the way and have finally run out of time.
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