Author Topic: MG M type  (Read 4227 times)

NewbieNick

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Re: MG M type
« Reply #60 on: 23 Apr 23, 09:54 am »
Thanks guys. Ian ,I am going to buy generic torque converter from Gemini 420 also 68 or 70 tooth sprocket also from Gemini , out of stock at the mo. Hoping to fit rear axle this weekend & wanted to make sure I had clearance for sprocket & chain.
Cheers Nick

Ian L

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Re: MG M type
« Reply #61 on: 23 Apr 23, 10:15 am »
Nick, yep you have the same problem out of stock drive plates and I cant find anyone else who does these - @everyone! Any suggestions? I also looking at a 219 type solution but the drive gear for that is out of stock at Gemini as well, Im thinking of machining up a rotax drive to fit the 5/8 short and key, has any one done this? Sound like we are at a very similar stage judging by the issues!! - Happy building!

Moogie38 (Noel)

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Re: MG M type
« Reply #62 on: 23 Apr 23, 11:12 am »
There is a topic in the Tech Forum,  Re. Sprocket Sizes. that should give you the information you need.
#420 chain has the same pitch as #40. The pitch of #219 chain is very close to #35.
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NewbieNick

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Re: MG M type
« Reply #63 on: 03 May 23, 03:42 pm »
Sprocket solution, for me at least. I have purchased a 9 tooth TAV output sprocket 40/41 to connect to a 60 tooth plate wheel/sprocket.
This gives me nearly 7-1 as advised & also a smaller drive sprocket meaning more ground clearence/engine space.

Cheers Nick

NewbieNick

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Re: MG M type
« Reply #64 on: 05 May 23, 04:59 pm »
Bit more work done, pedals inspired by Moogie or ripped off from Moogie.

Moogie38 (Noel)

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Re: MG M type
« Reply #65 on: 05 May 23, 05:40 pm »
They look ok to me ! 👍
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NewbieNick

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Re: MG M type
« Reply #66 on: 08 May 23, 04:19 pm »
Progress, lots of. I was concerned about distorting the chassis rails tightening up bearing holders, so inserted 18 mm ply cut to a tight fit & drifted in. Don't know if this has any merit but did it anyway. Rear axle all done, front axle & steering stripped down, painted & reassembled. Really happy that its come this far.

Cheers Nick               

Ian L

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Re: MG M type
« Reply #67 on: 08 May 23, 07:20 pm »
Hi Nick,
Looks like some good progress.
I would say any additional support is worth while - where I can I have welded in crush tubes in my design.
I see you have the drive sprocket on the right - drive sprockets are normally on the left due to the direction of drive from the engine, brake disc on the right.
Ian

RhysN

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Re: MG M type
« Reply #68 on: 08 May 23, 07:39 pm »
There is a topic in the Tech Forum,  Re. Sprocket Sizes. that should give you the information you need.
#420 chain has the same pitch as #40. The pitch of #219 chain is very close to #35.
All imperial chains (even most on Japanese motorcycles) the first digit   (distance from pin to pin) is in eighths of an inch, so 219 is 2/8 (/4"), 35 is 3/8 and all the 4 series are 4/8 (1/2")
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Ian L

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Re: MG M type
« Reply #69 on: 08 May 23, 08:39 pm »
Nick, looks like others have used your layout  - I found the attached with your layout
Ian

NewbieNick

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Re: MG M type
« Reply #70 on: 09 May 23, 05:57 am »
Thanks Ian , I am missing something here what’s the relevance of disc location to engine rotation? It’s easy enough to change them round but put disc same side as calliper. Anyone else have any views.
 Regards Nick

NewbieNick

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Re: MG M type
« Reply #71 on: 09 May 23, 05:59 am »
Sorry same side as master cylinder

RhysN

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Re: MG M type
« Reply #72 on: 09 May 23, 07:30 am »
Thanks Ian , I am missing something here what’s the relevance of disc location to engine rotation? It’s easy enough to change them round but put disc same side as calliper. Anyone else have any views.
 Regards Nick
If you have the space it doesn't matter what side the brake is on. Some folks build them so narrow the only place for the brake is the right hand side, and always the sprocket to the left.
We must avoid torturing our brains with false problems, it occupies but it can annoy. In jest!

Ian L

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Re: MG M type
« Reply #73 on: 09 May 23, 08:44 am »
Hi Nick, looking at your axle it looked that the drive sprocket was over to the right, this needs to be on the left of the engine, when the torque converter is assembled this can leave little space for the brake disc on the same side, but from the pic I attached looks that this has been achieved by others. Although both on the left does push the engine off to the right - I have tried to keep the engine more or less on the center line. All the best. Ian

NewbieNick

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Re: MG M type
« Reply #74 on: 09 May 23, 03:28 pm »
Thanks Rhys & Ian, Ian the engine will be centered when i decide what to get, The sprocket/disc are loose on the axle until i can see where everything goes.
Thanks again Nick