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twin disc conversion

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Bryanj:
Just hope they send you the correct drive plate as the original number superceeded to the new style one and you had to have a new style chrome plate

Ewan 500 K1:

--- Quote from: Bryanj on September 12, 2013, 03:20:39 PM ---Just hope they send you the correct drive plate as the original number superceeded to the new style one and you had to have a new style chrome plate

--- End quote ---

I thought they were unobtanium , be really interesting to hear if they dont send the superceeded version , ie the kind with the lugs that fit in the chrome cover. The one with the lugs that fit in the chrome cover is the one on the right in the second and third photos below. 44641-300-00 shape is the one on the left. Also, there's two versions of the type that has the lugs that fit in the chrome cover ( ie the one on the right). One is solid and one is a two part one with the two parts joined with rubber. I used the former to make my equivalent 44641-300-000.. if I recall correctly I seem to remember seeing somewhere that you cant use the two part one to modify to a 44641-300-000 shape (maybe because the heat from the grinder would melt the rubber ?? ). One more thing ...the one I made is only suitable for a twin disc conversion if the hub you have has the cut away flat sections  .. see the first photo below. If you have the hub without the cut aways  the approach taken is different .... you still need to modify the speedo drive plate, essentially by cutting of the lip, leaving a flat surface on the bottom without any tabs which is then screwed / riveted / glued / JB welded to the face of the hub. There's a few posts about covering these.

Ewan 500 K1:
if the worst comes to the worts and they do send you the wrong part .. and you do have the hub with the cutaways ... then its pretty easy to modify a speedo drive plate (see picture)

1. use a hacksaw to cut slots down beside the existing lugs (red lines in photo)
2. Use a bench grinder to grind off all the side wall material shown in blue in the photo , so that you are left with a flat base with two tabs for the hub.. like the one in the left of the photo
3. Cut / grind the tabs so that they are the right depth to slot into hub cutaways
4. Tidy up any rough edges with a file

Theres also another method that involves milling depressions in the disc so that the drive plate tabs sit in the disc

Johnwebley:
thanks guys,

 I am also hoping they send the correct drive plate,

 I could have modded my original plate,but figured  it is easier to buy a replacement,

I ordered it by the part number,no comments about it being superseded,

fingers crossed,

Johnwebley:
I do have the hub with twin cutaways,
re the gear drive

went on order tracker,details as follows,

ordered 12th sept,original dispatch 18th

latest dispatch date 23rd,

I await developments

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