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Old 25 Apr 2017, 10:21 (Ref:3729087)   #1
Hillclimber1
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Hillclimber1 should be qualifying in the top 10 on the grid
Noise reduction

I am building a Hillclimb car using a V8 two stroke which emits 145db with open exhaust. I am told that a turbo charger in the exhaust will reduce noise levels? Any one with any knowledge?

Peter
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Old 25 Apr 2017, 12:16 (Ref:3729102)   #2
chunder
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chunder should be qualifying in the top 5 on the gridchunder should be qualifying in the top 5 on the gridchunder should be qualifying in the top 5 on the grid
You are building a V8 2 stroke!!! And the only way you can think to quieten it down is to add a turbo!!

I think April the 1st was earlier in the month chap!!
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This used to be such a vibrant place. Unless you are Oz or like 24h races whats the point now?
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Old 26 Apr 2017, 20:39 (Ref:3729370)   #3
SidewaysFeltham
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SidewaysFeltham should be qualifying in the top 5 on the gridSidewaysFeltham should be qualifying in the top 5 on the gridSidewaysFeltham should be qualifying in the top 5 on the grid
Remove six pistons?
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Old 8 Nov 2017, 06:31 (Ref:3779398)   #4
Trikes
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Trikes should be qualifying in the top 10 on the grid
Built a lot of Mufflers for two strokes. You should be able to get a set (or a pair) of mufflers made up no problem. They are not hard to make. Even the most noisiest two stroke on a bad day came in at 98db. It's all about the length - packaging requirements etc. Shorter Mufflers are more noisy. A 4 cylinder Yamaha-Krauser that reved to over 20k from Side-car then fitted into a Speedway car was the hardest to quiet down because of packaging problems, took me two sets of Expansion Pipes and Mufflers before he made the 94-95db. Anyway I can guide you thru it if you want to have a crack at making some up.......
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