12v conversion.

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Bruvski
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Joined: Sun Oct 02, 2016 6:03 am
Location: South East London, UK

12v conversion.

Post by Bruvski » Fri May 17, 2019 4:32 pm

Hello all. Does anyone know if a G424 alternator will fit an MT9 crankcase? I've been looking at the engine and I don't think that even if I shave the old dynamo holder ears off that the G424 will clear the camshaft bulge? I have an adapter plate but that won't even fit without modifying.

Regards
Previous bikes:
Galleria 50
CZ125
1983 Suzuki Katana 1100 heavily modified, owned for 23 years
1952 BSA A10
1999 Suzuki Hayabusa, fast as f**k
1998 Suzuki TL1000S
198? Honda CX500
198? Suzuki GS 850

Current Bikes:
1974 Suzuki GT250
1990 Dnepr MT16 sidecar/rig.

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propwash
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Re: 12v conversion.

Post by propwash » Fri May 17, 2019 4:56 pm

To get a G424 to fit will require machining the case. It has been done quite a number of times. This would require the engine to be on the bench if done correctly.
There is another answer...
http://www.old-motorcycle-parts.com/dyn ... 414-1.html

Bruvski
Comrade
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Posts: 35
Joined: Sun Oct 02, 2016 6:03 am
Location: South East London, UK

Re: 12v conversion.

Post by Bruvski » Sat May 18, 2019 4:20 pm

Thank you Propwash, they look really nice. What sort of machining would I need? I've got the engine out and stripped.

regards.
Previous bikes:
Galleria 50
CZ125
1983 Suzuki Katana 1100 heavily modified, owned for 23 years
1952 BSA A10
1999 Suzuki Hayabusa, fast as f**k
1998 Suzuki TL1000S
198? Honda CX500
198? Suzuki GS 850

Current Bikes:
1974 Suzuki GT250
1990 Dnepr MT16 sidecar/rig.

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propwash
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Posts: 1615
Joined: Wed Jul 18, 2007 11:45 pm

Re: 12v conversion.

Post by propwash » Sat May 18, 2019 7:06 pm

Something like this -
https://www.youtube.com/watch?v=atuED4Lb5Is

My opinion, the G424 is not worth cutting up the case. I have found the G424 less reliable than the G414.

Bruvski
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Posts: 35
Joined: Sun Oct 02, 2016 6:03 am
Location: South East London, UK

Re: 12v conversion.

Post by Bruvski » Sun May 19, 2019 5:15 pm

propwash wrote:
Sat May 18, 2019 7:06 pm
Something like this -
https://www.youtube.com/watch?v=atuED4Lb5Is

My opinion, the G424 is not worth cutting up the case. I have found the G424 less reliable than the G414.
Thanks again. I have seen that video before, I don't know why he uses the tools that he does, he is supposed to be a engineer. But that was a K series engine and mine is a MT with an overhead cam. I will look into getting a G414.
Thank you Propwash.
Previous bikes:
Galleria 50
CZ125
1983 Suzuki Katana 1100 heavily modified, owned for 23 years
1952 BSA A10
1999 Suzuki Hayabusa, fast as f**k
1998 Suzuki TL1000S
198? Honda CX500
198? Suzuki GS 850

Current Bikes:
1974 Suzuki GT250
1990 Dnepr MT16 sidecar/rig.

3 bike mike
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Location: Bristol, England, U.K.

Re: 12v conversion.

Post by 3 bike mike » Wed May 22, 2019 4:54 am

The Dynamo you have ( 6 Volt ) will produce more than 12 volts. I run my MT9 with it on 12 volt. You need 12 volt batter, 12 volt regulator and LED lights, DO NOT CONNECT LOADS OF ACCESSORY, I do run my sat nav , but thats all.
You do need slightly higher revs for the regulator to kick in, so may not be suitable if ridding in town all the time.
Dynamos are speed dependant so low revs = low voltage output. Higher revs = higher output. The dynamo you have if in good condition will output about 17 volts at maximum revs the bike will do .

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