Lozenge Silencer

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Keefe
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Lozenge Silencer

Post by Keefe » Thu Jun 04, 2020 9:40 pm

Hi, I picked up a Lozenge Silencer for the B25 that I will eventually get round to putting together. It is going to need a patch welded onto the back of it, where it has rusted. I am hoping to weld it myself with assistance of friends.

My question is, what gauge steel should use to repair it.

Thanks
!974 Triumph T150V
1974 Triumph TR5T
1971 BSA B50 Frame with a 1959 Triumph 3TA Engine
1971 BSA B25T Frame with a 1971 B25FS Engine (Rebuild in progress)
2007 S*zuki Bandit 1200 K6

BasilF
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Re: Lozenge Silencer

Post by BasilF » Sun Jun 07, 2020 8:14 am

Can't give an exact answer but my new silencer is made of 1.5mm steel and it was only slightly heavier than the original one so 1.2 or 1.5mm ought to be fine for your patch and 1.5mm will be easier to weld.

BasilF
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Re: Lozenge Silencer

Post by BasilF » Wed Aug 26, 2020 6:34 pm

Had a go at making a new lozenge silencer as a spare for my B50/
IMG_20200716_114704.jpg
Made a wooden buck from the measurements of an original silencer. To get a more curved shape, rather than fold a channel and then make the ends into a lozenge I made a top and then sides and welded them all together. Shell is 1mm mild steel.
IMG_20200716_114713.jpg
IMG_20200817_143612.jpg
Baffles and internals were very similar to original.
IMG_20200818_094656.jpg
IMG_20200821_183924.jpg
Backs and mounting points were welded on. It was made to fit my frame and a new eBay exhaust pipe (which needed bending and cutting to fit) but I don't expect it would fit any other bike which is why I made a complete replacement exhaust.
IMG_20200826_173358.jpg
Heat shield was made in 1mm aluminium and varnished. I might try to make one in 0.7mm stainless some time.
IMG_20200826_173411.jpg
/attachment]
Complete system will go on the shelf waiting for current one to rust through.
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IMG_20200826_174834.jpg
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Jeff K (Thu Aug 27, 2020 3:19 pm)
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beat
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Re: Lozenge Silencer

Post by beat » Wed Aug 26, 2020 9:48 pm

:thumb :thumb :thumb

Keefe
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Re: Lozenge Silencer

Post by Keefe » Thu Aug 27, 2020 9:18 am

Wow, I could only dream about making something like that. Well done.
!974 Triumph T150V
1974 Triumph TR5T
1971 BSA B50 Frame with a 1959 Triumph 3TA Engine
1971 BSA B25T Frame with a 1971 B25FS Engine (Rebuild in progress)
2007 S*zuki Bandit 1200 K6

JerryT
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Re: Lozenge Silencer

Post by JerryT » Thu Aug 27, 2020 2:08 pm

Great work BasilF

Jeff K
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Re: Lozenge Silencer

Post by Jeff K » Thu Aug 27, 2020 3:19 pm

Great work!
Jeff

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