Author Topic: 67` Bomber running problems  (Read 19995 times)

Offline mo goldie

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Re: 67` Bomber running problems
« Reply #45 on: May 18, 2024, 04:16:48 PM »
can anyone supply the following .....as a bloke has asked if I can supply them he will see what he can come up with if anything ?

so he said if you supply me with the diameter of the centre hole and the p.c.d. with hole diameter and the number of holes and the chain pitch

well I Know it is a 530 pitch chain but Not the other bits  ;D
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1980 Triumph Bonneville 750 T140/D Special Black & Gold
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1967 Honda CB450 KO Black Bomber

Offline Bryanj

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Re: 67` Bomber running problems
« Reply #46 on: May 18, 2024, 04:26:03 PM »
Do you not have an old sprocket to give him?

Offline mo goldie

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Re: 67` Bomber running problems
« Reply #47 on: May 18, 2024, 07:13:27 PM »
Hi Bryan

Well I am using the bike so don`t want to take it off the road yet if you know what I mean......... so just wondered if someone has one already got one off that they could do a dimension check ? 
Currant BIKES:

1980 Triumph Bonneville 750 T140/D Special Black & Gold
1962 BSA 650 Rocket Gold Star ( silver ) 
1977 Norton Commando 850 MK3  Interstate ( silver )
1977 Kawasaki KH400 Triple ( Green )
1999 Harley Davidson 1200S sportster Sport ( silver )
1975 Honda Monkey st70 Dax ( Blue )
1967 Honda CB450 KO Black Bomber

Offline Bryanj

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Re: 67` Bomber running problems
« Reply #48 on: May 18, 2024, 08:18:14 PM »
Have you considered that running 17/35 sprockets has dropped your revs for running speed and may be contributing to your running problem? It was designed to cruise at a certain rev range

Offline mo goldie

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Re: 67` Bomber running problems
« Reply #49 on: May 18, 2024, 10:35:34 PM »
well I might have to keep the set up then as a 15T and 35T ......... the running of the bike is fine now ..well near on anyway ..but the revs just seem to be so high :(

oh the other thing is I have been on the DSS and looked at Ashley`s parts list and they did do a 17T sprocket for the Bomber so it must have been able to run with a 17T ha
« Last Edit: Today at 12:33:05 AM by mo goldie »
Currant BIKES:

1980 Triumph Bonneville 750 T140/D Special Black & Gold
1962 BSA 650 Rocket Gold Star ( silver ) 
1977 Norton Commando 850 MK3  Interstate ( silver )
1977 Kawasaki KH400 Triple ( Green )
1999 Harley Davidson 1200S sportster Sport ( silver )
1975 Honda Monkey st70 Dax ( Blue )
1967 Honda CB450 KO Black Bomber

Offline Bryanj

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Re: 67` Bomber running problems
« Reply #50 on: Today at 01:05:26 AM »
Honda always list alternate sprockets but they were designed with a ratio and yes, compared to british iron, they do seem to rev high BUT its higher up the rev band they give rated power, the 500 handbook says not to go out of the top of the red too often

Offline AshimotoK0

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Re: 67` Bomber running problems
« Reply #51 on: Today at 11:51:03 AM »
Cursing you today Mo ... 'cos I had to go to the bowels of my stash to find this to measure for you.  ;D ;D ;D

4 mount holes around 9.7 mm Dia. Large centre hole 73.7 mm Dia.




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