Help Wanted. BM20 Plus top lip dimensions

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Nashbrew
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Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Tue Jul 13, 2021 11:37 am

Hi

Is there anyone out there with a BM20 plus model that could tell me the diameter of the top lip?
I have a component to modify to fit an older model that has a bigger diameter.
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MashBag
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Re: Help Wanted. BM20 Plus top lip dimensions

Post by MashBag » Wed Jul 14, 2021 6:34 am

How are you planning to modify it?

If you have access to a welder, could you cut it and add two lugs that would take a bolt?

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Wed Jul 14, 2021 9:25 am

Hi Mashbag

I am going to modify the clamp there are two flat bits of metal on the mechanism that need to be longer for the clamp to have a bigger closing diamter to accomadate the old BM.
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Re: Help Wanted. BM20 Plus top lip dimensions

Post by MashBag » Thu Jul 15, 2021 6:57 am

Scary imo. 'cos if the size is much bigger it just won't fit (seat) even then' cos it's a formed, stiffened circle!

Captain cock up is at the door 😂😂

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Thu Jul 15, 2021 1:39 pm

Not really scary i just need to make the clamp accommodate around 10mm more diameter.
The inside of all BM20 are the same so no worry's about sealing etc.
Just wish I could get confirmation of the outside diameter of the BM20 Plus.
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McMullan

Re: Help Wanted. BM20 Plus top lip dimensions

Post by McMullan » Thu Jul 15, 2021 4:54 pm

The diameter of the BM20 Plus is not relevant. Focus on fitting the lid to the BM20 you have. Pre 2015? I noticed a slightly different lid design when the 2015 controller was released. They should be a bit clearer with their description as I read it as ‘the fermentation lid is compatible with previous BM/BM Plus’. The quality of these units is so high they last years if treated with respect. I’d therefore expect compatibility to be maintained.

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by MashBag » Fri Jul 16, 2021 6:11 am

I’d therefore expect compatibility to be maintained.
I agree.

@Nash

How does knowing this measurement help with the mod?

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Fri Jul 16, 2021 8:35 am

Compatible it maybe.
but the clamp is too small for a pre BM20 Plus models.
so modification of the clamp is the cheapest, easiest route to take.
The difference is so small I did not realise there was an issue until I tried to pull the clamp down. and it would not compress shut.
Contacted Speidel and they confirmed that this accessory does not fit pre BM20 plus models.

Knowing the measurement of a plus model will tell what size to make clamp mechanism I can take a guess but would prefer to real diameter to aid my maths for the new parts.
Falling apart together nicley🍻

McMullan

Re: Help Wanted. BM20 Plus top lip dimensions

Post by McMullan » Fri Jul 16, 2021 10:26 am

I’m guessing it matches the fermentation lid :wink: With a v-clamp, which I assume is supplied with the lid, there should be some way to get it to fit. Thinner seal perhaps? Or even without the seal?

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by MashBag » Sat Jul 17, 2021 5:02 am

I am with you now. You are going to replace the link between the ring and the handle.

Maths makes perfect sense, trail and error could be tiresome. Be aware some of those mechanisms will bend surprisingly easily if you get heavy handed 😉

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by richard080561 » Sat Jul 17, 2021 6:50 pm

Nashbrew wrote:
Fri Jul 16, 2021 8:35 am
Compatible it maybe.
but the clamp is too small for a pre BM20 Plus models.
so modification of the clamp is the cheapest, easiest route to take.
The difference is so small I did not realise there was an issue until I tried to pull the clamp down. and it would not compress shut.
Contacted Speidel and they confirmed that this accessory does not fit pre BM20 plus models.

Knowing the measurement of a plus model will tell what size to make clamp mechanism I can take a guess but would prefer to real diameter to aid my maths for the new parts.
Have you asked Speidel for the measurement?
Richard M
Cardiff

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Nashbrew
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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Mon Jul 19, 2021 9:11 am

Have you asked Speidel for the measurement?
[/quote]

Yes They wanted to sell me a new model!
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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Tue Aug 31, 2021 1:01 pm

Now all sorted with a modified clamp and a brew bubbling away nicely🍻🍻
Falling apart together nicley🍻

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by f00b4r » Tue Aug 31, 2021 8:39 pm

Nashbrew wrote:Now all sorted with a modified clamp and a brew bubbling away nicelyImageImage
Pics? Image

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Re: Help Wanted. BM20 Plus top lip dimensions

Post by Nashbrew » Wed Sep 01, 2021 8:31 am

f00b4r wrote:
Tue Aug 31, 2021 8:39 pm
Nashbrew wrote:Now all sorted with a modified clamp and a brew bubbling away nicelyImageImage
Pics? Image
Will use a blow off pipe next time, Is a bit lively.
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Falling apart together nicley🍻

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